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For Sinclair Fans, The ZX81 Lives On

An anonymous reader writes "The ZX81 Museum was set-up to preserve and showcase a private collection of original Sinclair branded ZX81 hardware, software and literature. The museum has since expanded to include ZX81 software from other publishers of the time and a variety of other ZX81 peripherals and reference books. The collection dates from 1981 to 1983 and features the complete Sinclair-branded software series. The activities of the museum are regularly reported via Twitter, along with updates from the ever growing ZX81 fanbase. There is even a YouTube channel for the diehard 8-bit fans out there, of which there seems to be many!" This was one of the first computers I ever used; I suspect it's still buried in some deep stratum in my dad's basement. As is often the case, the old advertisements are great.

196 comments

  1. 16K-Byte expansion! by Anonymous Coward · · Score: 0

    Wow! Four of those and I could run the Java Update Scheduler! (52K according to task manager on my office PC)

    1. Re:16K-Byte expansion! by hairyfeet · · Score: 1

      Well it looks like they could use some more bytes as I click on TFA (I know I know...but I'm bored) and it says "509 Bandwidth Limit Exceeded" so it looks like despite our falling numbers we can still cause a good old fashioned Slashdotting.

      Now for those of us that never got to have a ZX back in the day a few questions: How did it stack up to the other systems of the day? The Trash 80, The Commodore VIC20 and C64, the Atari 400/800 and the 5150 IBM? In my area it was all VIC20s and Trash 80s so I never did get to play with one. While i love my 6 core with tons o' RAM and Tbs of HDD space as one old customer of mine that had the C128 and loves to wax nostalgic about says "You just can't know the guts of a modern machine like you could those old systems". You could really get bare metal on those old systems, could find out the location of every register, every hidden Opcode, you could really squeeze every drop of power out of those systems if you knew what you were doing.

      And i know this is off topic but fuck if i know where else to ask this and we are talking about seriously old systems so here goes: Has anybody built a hardware emulation or maybe a SoC of the old C128? Because I've had zippo luck for finding the guy a C128 at a non assraping price and he has tons of his old code he'd love to play with again. He had all these really wicked things cooked up for the C128 like this robotic arm that was really slick or this cool sat tracking animation he made for one of the companies selling the big 12 footers back in the day and he's always talking about how he'd love to break all that old code back out and fiddle with it again but his system got stolen years ago so he's had bingo luck. Everything I've found has been based on the C64 not the C128 so i'm guessing it wasn't a real popular system so any links that could point me in the right direction would be appreciated.

      --
      ACs don't waste your time replying, your posts are never seen by me.
    2. Re:16K-Byte expansion! by uglyduckling · · Score: 2

      It lost massively against all of the systems you mention, in almost every aspect. It won on three counts: it was early; it was small; it was incredibly cheap. It didn't have the words "don't panic" written on the case, but it might as well have. Here are a few highlights: monochrome RF-modulated video output only; no sound at all*; terrible membrane keyboard; 1K RAM (total, not all available to user); character-based display (no pixel-based graphics)**; edge-connector only expansion; very ropey cassette interface; "fast" and "slow" modes in BASIC - fast mode blanked the screen (ugly flickering grey) whilst executing the program, slow mode was- well, slow.

      * actually, you could get sound output by slightly detuning the TV and using a machine code loop to mess with the RF modulator output

      ** I think there were also processor-intensive machine code hacks to get a graphic display but you couldn't do much else at the same time

    3. Re:16K-Byte expansion! by Anonymous Coward · · Score: 1

      I think there were also processor-intensive machine code hacks to get a graphic display but you couldn't do much else at the same time

      Hi Res moving graphics were possible.

      No point turning your volume up for that one: no sound, natch.

    4. Re:16K-Byte expansion! by Dogtanian · · Score: 1

      No point turning your volume up for that one: no sound, natch.

      You *could* do ersatz sound by (e.g.) repeatedly switching between FAST and SLOW mode quickly or running COPY without a printer attached, etc.

      The effect this had on the sound output of the TV (which you were normally meant to keep turned down) gave a sort of buzzing that could be "tuned".

      I remember creating a slightly strange tune with bizarre vocals I made by recording this onto a cassetter recorder. It would probably be considered early minimalist electro music by today's standards, and I'm only half joking about that ;-)

      --
      "Slashdot - News and Chat Sites Deviant". (Click "homepage" link above for details).
    5. Re:16K-Byte expansion! by hairyfeet · · Score: 1

      Well then I'd have to give a point for the Commodore as we could get some cool sounds out of the VIC and C64. Weird though that they would build something for home users with ZERO sound at all though since the VCS could even do bleeps and bloops in 77. Was it the chip was just too slow, or was the addition of sound too expensive? Man i give them guys credit for how much they could squeeze into the bad joke of a memory space because as someone who started on the VIC and Trash 80 i can say that is one thing I do NOT miss and that's having to fight for every byte.

      But looking back it really amazes me how far we have come. I mean if you would have told me when i was writing pong games on my VIC that one day I'd have a micro portable called a "netbook" that only weighs 3 pounds, has dual 1600MHz CPUs with 8Gb, actual Gbs of RAM and 320 gb of space instead of squeezing everything onto a datasette and the whole smash would cost just $350 i'd have asked you to quit hogging whatever you were smoking. I do think its kinda wasteful how badly some of the programs behave now when it comes to resources though, it seems today programmers don't optimize shit anymore and just throw more RAM at it. Can you imagine how fast programs would run today if programmers were even half as thrifty as they were back then?

      --
      ACs don't waste your time replying, your posts are never seen by me.
    6. Re:16K-Byte expansion! by Anonymous Coward · · Score: 0

      It stacked up pretty poorly.. No sound, black and white lo-res graphics (the RF signal was so weak, you had to turn up your TV's brightness to max for it to work--it won't even work on modern TV's), slow, with a horrible keyboard and wobbly RAM pack. It worked and was cheap, which is why it sold well. Even the TS1000 (the US version) sold well, but then the Commodore price war began and one could get a much better computer for much cheaper. A similar phenomenon occurred in the UK.

      For me, there was a love/hate relationship between myself and the Sinclair. I loved it, because it was my own and I actually had a computer. I hated it 'cos it was a piece of junk that couldn't do anything. Junk is a harsh term, though. The ZX81/TS1000 really was a wonder of engineering in many ways. All operations simplified into 4 chips total. It was actually very elegant in its functionality and made the most of its limited specifications. I think Steve Wozniak would have approved of it's design. Quite an impressive engineering feat, even though it wasn't that great of a consumer product.

    7. Re:16K-Byte expansion! by Dogtanian · · Score: 1

      Weird though that they would build something for home users with ZERO sound at all though since the VCS could even do bleeps and bloops in 77.

      Not really, they were probably pushing things quite far to get it at that price- even the TV signal was mostly generated in software with just some basic interfacing hardware. And AFAIK the VCS was quite a bit more expensive. Also, the VCS would actually have been entirely unsuited to use as a "real" computer (at least without any add-ons). Why?

      The VCS spec was tailored specifically towards playing pre-programmed games, whereas the ZX81 was a "real" computer. All the following is to the best of my knowledge, so don't take it as gospel. However, consider...

      The unexpanded ZX81 has 1KB, i.e. 1024 bytes of RAM, and even that was considered tiny. The VCS?... the VCS had 128 *bytes* of RAM! (i.e. one-eigth of a kilobyte).

      They actually released a BASIC "programming" cartridge for the VCS that had 62 bytes free space left after overheads.

      Of course, this is missing the point; I assume the original intention was always that programs were supplied on ROM cart (up to 4KB) and that the tiny RAM was meant for data storage only. Home programmers, of course, couldn't do things that way. My point here is that the VCS got away with having a lower spec because it didn't need to cater to that need. The ZX81 did.

      Similarly, the VCS had no proper screen memory- AFAIK only one line's worth of sprite position and background could be stored at any one time, and these had to be updated on the fly to generate the output for successive lines (and hence a complete picture).

      Also, (again AFAIK) the VCS had no native character generation support, all number/letter graphic generation etc had to be done "manually" via software.

      It also had no input or output for backing store or anything other than joysticks/paddles and TV. AFAICT it had no operating system as such. The most visible difference- that it had no integrated keyboard- is actually far less important than what I described above, since there were actually a number of crude keyboard-like attachments anyway.

      My point is that although the VCS was much better at playing games than the ZX81, one might argue that the ZX81 was actually more powerful in terms of being a "real" computer! The VCS, not pretending to be as flexible, could afford to "cut corners" without this being obvious, presumably letting them concentrate more on graphics and sound.

      --
      "Slashdot - News and Chat Sites Deviant". (Click "homepage" link above for details).
  2. Computer from kit is a great way to start by SuperKendall · · Score: 5, Interesting

    My first computer was the ZX-81 kit where you had to soldier it together.

    Although in a lot of ways I know this is simply not practical for most people to do, I have to say it was a really awesome way to be introduced to a computer. It's probably just nostalgia but I feel a little sorry that almost no-one going forward will be introduced to computing in that way...

    It's nice to see someone keeping the history of this very unique system alive.

    --
    "There is more worth loving than we have strength to love." - Brian Jay Stanley
    1. Re:Computer from kit is a great way to start by Jawnn · · Score: 4, Funny

      My first computer was the ZX-81 kit where you had to soldier it together.

      Well there's yer problem. Me, I just used solder.

    2. Re:Computer from kit is a great way to start by mcgrew · · Score: 1

      I think what he meant was you had to "soldier on" and write all the programs yourself, because I, for one, had a damned hard time finding any. ;)

      Was the ZX-81 the same as the TS-1000, or was it the same as the one that came after?

      At any rate, I probably still have casettes with TS-1000 programs on it. Are there any emulators for modern PCs that will run Sinclair BASIC or TS-1000 machine code and will read the tapes? If so, I'd love to get a copy.

    3. Re:Computer from kit is a great way to start by Just+Some+Guy · · Score: 1

      I think what he meant was you had to "soldier on" and write all the programs yourself, because I, for one, had a damned hard time finding any. ;)

      I didn't. There were cardboard crates full of jumbled discount tapes at the local bargain store. "Ooh, look! A coupon manager!"

      Are there any emulators for modern PCs that will run Sinclair BASIC or TS-1000 machine code and will read the tapes?

      I can't imagine it'd take more than 50 lines of Python.

      --
      Dewey, what part of this looks like authorities should be involved?
    4. Re:Computer from kit is a great way to start by Colourspace · · Score: 4, Informative

      Try www.worldofspectrum.org (yep on /. 13 years now and still haven't found out how to do embedded links - sorry - geek card in post) It's primarily a site for the 1982 UK/EUR ZX Spectrum machine but IIRC there are plenty of ZX80/ZX81 links and emulators for many platforms discussed. A good jumping off point if you do want to enjoy some nostalgia, and a massive library of legal dumps. I think the Timex-Sinclair 2048 *might* have been the US version of the ZX Spectrum (colour, 48K compared to the mono 1K ZX81)....

    5. Re:Computer from kit is a great way to start by TheGoodNamesWereGone · · Score: 1

      It was my first as well, although I bought the Timex ready-made version. My wife divorced me once she learned I loved it more than her..... Ahhhh, those were the days....

    6. Re:Computer from kit is a great way to start by gamanimatron · · Score: 2

      Was the ZX-81 the same as the TS-1000, or was it the same as the one that came after?

      The TS1000 had a slightly different motherboard, with an NTSC RF modulator and twice the RAM (2K!) built in. If I remember correctly, you couldn't get TS1000 kits either.

      --
      cogito ergo dubito
    7. Re:Computer from kit is a great way to start by Anonymous Coward · · Score: 4, Informative

      It's okay, they didn't have hyperlinks back when you got into computing. I hear wearing an onion on your belt was fashionable...

      either use the

      http://

      prefix or

      <a href="http://www.example.com"></a>

      or

      <URL:http://example.com/>

      If you use the old discussion system it gives you a hint below the post area.

    8. Re:Computer from kit is a great way to start by Chickenlips · · Score: 1

      I used the ZX-81 (assembled) with the 16K memory pack (rubber band to prevent sudden "data loss") for about two years, using it to teach myself how to program in basic and machine language (poke, peek, REM statments, etc.) It was a great learning tool.
      Saving and loading programs was iffy and irritating for me until I built a Schmitt trigger interface to clean up the signal between the tape machine and the computer. Ah, fond memories.
      My finger tips have been numb ever since (nice, hot membrane keyboard).

    9. Re:Computer from kit is a great way to start by AmazingRuss · · Score: 1

      It' didn't go so well for me. I was 12, uncoordinated, and had never soldered before. I, my desk, and everything on it were covered in burns by the time I was done, and I never could get it to work. Had to send it in to have them fix it for me. It was a mess... I suspect they just yanked the z80 and threw the rest away.

    10. Re:Computer from kit is a great way to start by SuperKendall · · Score: 1

      My finger tips have been numb ever since (nice, hot membrane keyboard).

      I know what you mean, I have sometimes wondered if former ZX-81 users would make good bank robbers what with incredibly faint fingerprints what with oil unable to flow from that part of the finger any longer.

      --
      "There is more worth loving than we have strength to love." - Brian Jay Stanley
    11. Re:Computer from kit is a great way to start by mpe · · Score: 2

      The TS1000 had a slightly different motherboard, with an NTSC RF modulator and twice the RAM (2K!) built in.

      IIRC the ZX81 board could actually be fitted with a 2k static RAM chip. There were also two different ways getting 1k. Either two 4bit chips or one 8 bit chip.

    12. Re:Computer from kit is a great way to start by Anonymous Coward · · Score: 3, Informative

      Either two 4bit chips or one 8 bit chip.

      That's what sinclair did with the successor, the Spectrum, too. It came in 2 editions, 16 and 48k. That extra 32k was actually 64k, with only upper or lower bank mapped. Apparently they shaved some costs using partly broken memory chips in consumer products.

    13. Re:Computer from kit is a great way to start by Anonymous Coward · · Score: 0

      That's what sinclair did with the successor, the Spectrum, too. It came in 2 editions, 16 and 48k. That extra 32k was actually 64k, with only upper or lower bank mapped. Apparently they shaved some costs using partly broken memory chips in consumer products.

      IIRC, 32k chips didn't exist. Sinclair connected one address bit to a fixed input, so only one half could be used. Some people reconnected that to some unused I/O port to get to the other half. (The processor could only handle 64k of memory, but they switched 32k between the halves of the RAM chip.)

    14. Re:Computer from kit is a great way to start by Anonymous Coward · · Score: 0

      there was NO timex sinclair 2048 , either it was the Timex Sinclair 2068 (with a trapdor on the side) or a Timex Computer 2048 (made from the portuguese arm of timex)

      Jorge
      www.retroreview.com

    15. Re:Computer from kit is a great way to start by mcgrew · · Score: 1

      There were a few programs I bought mail order, but most of them were crap. There was a pretty good chess program for it, though.

      I can't imagine it'd take more than 50 lines of Python.

      Damn, now I need to learn Python! But I'd need a way to load the tapes through the sound card inputs. And I'm pretty sure recreating the Z80's complete instruction set, as well as BASIC, would take a few more than 50 lines of any language -- IIRC the Z80 had over 100 instructions. And since video went straight to the hardware (as did the keyboard with my tanks game) that would entail even more code.

    16. Re:Computer from kit is a great way to start by mcgrew · · Score: 1

      If you're wondering how the AC made the < show up, you just replace the < with &lt;

      Thanks for the link, I'll visit it later.

    17. Re:Computer from kit is a great way to start by mcgrew · · Score: 1

      I was 12 when I built my first computer, too, but it wasn't a Sinclair. It wasn't even digital! Actually it was more of an electric slide rule, but it would compute. But what would you expect from a 12 year old in 1964? Things were pretty primitive back then, I'll tell you.

    18. Re:Computer from kit is a great way to start by hairyfeet · · Score: 1

      That's why I had both my boys assemble their own PCs, it wasn't quite the feat soldering one together was but it gave me a really good chance to explain each piece and its function as they put it together and helped them get a better grasp of the machine as a whole. of course there is also the pride involved of firing up a machine you build from a pile of parts and hearing it whir and come to life, but if anyone's kids need a PC I'd highly recommend one of the tiger barebone kits and a little of your time, its worth it IMHO.

      --
      ACs don't waste your time replying, your posts are never seen by me.
  3. The old ads ARE great! by kkaos · · Score: 3, Funny

    "Finally you can afford to satisfy your lust for power." Well, it's about time!

    1. Re:The old ads ARE great! by RDW · · Score: 2

      ...but I don't see my favourite piece of ZX81 ephemera, the promotional poster that placed on some sort of darkly psychedelic space opera lectern:

      http://www.computinghistory.org.uk/userdata/images/large/PRODPIC-9064.jpg

      I actually learnt the QWERTY layout from a free copy of that, while waiting excitedly for the actual computer (an expected Christmas present). Yes, I would tell you to get off my lawn, but I actually have a hedge maze patrolled by a dinosaur:

      http://www.youtube.com/watch?v=nKvd0zPfBE4

    2. Re:The old ads ARE great! by ackthpt · · Score: 2

      "Finally you can afford to satisfy your lust for power."

      Well, it's about time!

      I love looking at old advertising. Shows what a crotchety old geezer I'm turning into now that was when a programmer was a programmer - fit a whole suite of applications in 16K of memory and stored on cassette tapes .. kids these days have it easy .. sloppy bloated code with no optimization .. hmmph! I have a small stack of Apple Insider magazine from 1980 and 81, alas, binned the heavy old Byte magazines from the mid-80's, which showed blistering performance of 6 MHz!!!* and you could get a 5 Meg HDD for a few thousand zorkmids.

      The one thing they do convince me of -- you can have fun with pretty much any generation's hardware and software, because I know I stayed up late at night coding or playing games on computers which my cellphone could utterly smoke.

      --

      A feeling of having made the same mistake before: Deja Foobar
    3. Re:The old ads ARE great! by Anonymous Coward · · Score: 1

      It's got nothing to do with having with any given set of HW/SW, it has to do with when you were YOUNG.

    4. Re:The old ads ARE great! by TheGoodNamesWereGone · · Score: 1

      Mod +1 up

    5. Re:The old ads ARE great! by Dogtanian · · Score: 1

      The old ads ARE great!

      I believe that some of the ads for the ZX81 (or for its even more basic predecessor, the ZX80, not sure which) made the bold and somewhat ludicrous claim that you could run a nuclear power station using one(!!!)

      Actually, this is probably technically correct, I just wouldn't want the Rampack wobbling too much if I was using it for that ;-)

      --
      "Slashdot - News and Chat Sites Deviant". (Click "homepage" link above for details).
    6. Re:The old ads ARE great! by mcgrew · · Score: 1

      kids these days have it easy .. sloppy bloated code with no optimization

      I don't think it's the kids' fault so much. I wrote a Turing chatbot that actually worked* on the TS-1000 (16k), ten years later decided to port it to DOS. The source code (which included its data) was still well under 16k, but the executable that Clipper compiled was half a meg.

      I still have the executable but no longer have the source, but I remember how I did it and was able to dig the data out of the executable. I'm going to recreate it in javascript. When I get around to it.

      * The program was a failure because it worked too well! My purpose in writing it was to demonstrate that computers don't and can't think, but nobody believed that it wasn't thinking.

    7. Re:The old ads ARE great! by flinkflonk · · Score: 1

      Ewwwww, another Clipper survivor!

      I remember that my executable* (that didn't do that much, mostly a preference system and menu) was so big I had to use overlays to make it run on a particular machine with only 512k (my development machine was slower, but it had 640k, all the memory you'll ever need :D). Parts of it were a separate program written in Turbo Pascal which I exec'd directly from another overlay, and another Clipper program I had included a small text editor written in C and linked directly into the executable.

      Yes, I am an old fart, do you really have to ask?

      * first versions written with Summer 85, and I jumped off the Clipper train shortly before 5.0 came out. Read the gritty details about Clipper version confusion (Summer 87 released in December 87, whoa!) on wikipedia :)

  4. Only if you are a Jenga champion by SuperKendall · · Score: 2

    Wow! Four of those and I could run the Java Update Scheduler!

    Given how careful you had to be with just one 16k expansion, I can imagine typing with four attached without causing a crash would take some very steady hands indeed!

    --
    "There is more worth loving than we have strength to love." - Brian Jay Stanley
    1. Re:Only if you are a Jenga champion by PCM2 · · Score: 2

      Given how careful you had to be with just one 16k expansion, I can imagine typing with four attached without causing a crash would take some very steady hands indeed!

      Oh hell yes. I remember clearly trying to port a text adventure game from some other dialect of Basic, hammering away on that dodgy membrane keyboard, and having the 16K cartridge fall out while I was trying to suss out the syntax errors. (Result: Crash, memory wiped.)

      --
      Breakfast served all day!
    2. Re:Only if you are a Jenga champion by MillionthMonkey · · Score: 4, Informative

      I used to beat those crashes by taking a bunch of ice cubes, double-bagging them in ziplocs, and placing that on top of the ZX81 where their crappy thin aluminum prong "heat sink" came up from the board to meet the upper case interior. I never had "unreasonable" crashes after that but I went through a lot of ice cubes with that little thing.

    3. Re:Only if you are a Jenga champion by Anonymous Coward · · Score: 0

      I used to beat those crashes by taking a bunch of ice cubes, double-bagging them in ziplocs, and placing that on top of the ZX81 where their crappy thin aluminum prong "heat sink" came up from the board to meet the upper case interior. I never had "unreasonable" crashes after that but I went through a lot of ice cubes with that little thing.

      The heatsink in the ZX81 was attached to the 7805 voltage regulator and it was located under the keyboard. Are you thinking of another computer?

    4. Re:Only if you are a Jenga champion by Anonymous Coward · · Score: 1

      There are almost more models of the ZX-81 as the number in the name, and probably excluding the Timex and other editions.

    5. Re:Only if you are a Jenga champion by Tastecicles · · Score: 1

      The Spectrum 128?

      --
      Operation Guillotine is in effect.
  5. My First Personal Computer by lazarus · · Score: 5, Interesting

    I was 12 years old. I worked for a summer and made enough money to buy the unassembled version. It was essentially a bag of parts that you soldered together yourself. Add an old black and white TV, a cassette tape recorder and you were on your way. That way back when "built your own computer" meant that either you assembled it or actually designed the darn thing. Today it means you connected the major components together and hoped everybody followed spec.

    The best part of the ZX81 was the fantastic instruction manual it came with that essentially taught you how to program (in BASIC). Very well written. I eventually left basic behind and started programming in Forth.

    I don't have mine anymore, but I wish I did. The membrane keyboard was truly horrible to use, the RAM (1K) insufficient (I eventually purchased the 16K add-on), and the entire thing painfully slow. But it was an affordable, functional computer back when that was a rarity. I owe it and it's designers a great debt.

    --
    I am not interested in articles about life extension advancements.
    1. Re:My First Personal Computer by mcgrew · · Score: 1

      I wore my membrane keyboard out playing two player battle tanks (I wrote it in assembly and hand-assembled the machine code because BASIC was too slow. Had to put loops in to slow it down enough to be playable in assembly).

      But I was 30 (damn but I'm getting old).

    2. Re:My First Personal Computer by nogginthenog · · Score: 2

      You can buy new ZX81 replacement membranes: http://www.rwapsoftware.co.uk/membranes.html

    3. Re:My First Personal Computer by Anonymous Coward · · Score: 0

      either you assembled it or actually designed the darn thing.

      Therein lies a huge difference. The ZX81 kit was Heathkit-simple. You populated the PCB by following instructions and didn't have to know anything about electronics, never mind digital logic.

      Sure, it's a little more challenging than assembling the components of a DOS box, but the gulf between both of those and actually designing your own is enough to make them virtually the same thing.

      Just wanted to make that clear for younger folks reading along. Kit assemblers our age were not of the same ilk as the hobbyists who designed their own. Assembling a ZX81 is more like making a mint-tin headphone amp, following any of the easy howto articles online. Good fun, but didn't make us grey-beards.

    4. Re:My First Personal Computer by element-o.p. · · Score: 1

      Likewise. I was just slightly younger than you (6th grade) when my dad bought a ZX-81 kit. That computer was my introduction to programming and computing. I definitely second your review of the manual. I used to pore over it for hours trying to learn what all of the functions did, and how to use them. In particular, I remember the sample programs they included in the manual for drawing sine curves and asymptotes. I remember taking pre-algebra in 7th grade and the light bulb clicked in my head. "Oh...so that's how they generated those graphs!" and I've loved math ever since.

      I still have that computer, after finding it my parents garage after my dad passed away a few years ago...

      --
      MCSE? No, sir...I don't do Windows. Yes, I am an idealist. What's your point?
    5. Re:My First Personal Computer by Spacejock · · Score: 1

      I saved enough pocket money for a ZX81 in 1983, and then my dad told me I wasn't allowed to buy one. He was worried computers were a bad influence on youth (unlike, say, drugs and alcohol). It took a few weeks but I finally won. Then I used my paper round money to buy a ZX printer. I still have both of them in the cupboard.

    6. Re:My First Personal Computer by scottrocket · · Score: 1
      "Good fun, but didn't make us grey-beards."

      You must not have had the pleasure of putting the keyboard ribbon into the socket - like putting a limp dick into a tight pussy (the trick was to hold it by the sides, & pull it stiff as you inserted). I'm pretty sure that at least one of my youthful whiskers turned grey.

    7. Re:My First Personal Computer by kilodelta · · Score: 1

      If you think the ZX-81 manuals were good, you should have seen the ones for the TRS-80! The book for the 4K Level 1 was good, but the one for the 16K Level 2 machine was fantastic.

    8. Re:My First Personal Computer by Nethead · · Score: 1

      Damn kids with your high /. UIDs. ;)

      The ZX81 was a cool box. My friend had one and his mom had an semi-pro U-Matic video editor that we made programs on for titling. The only computer I had used before that one was the SWTPC 6800 (6800 w/ 4k, just enough ROM to load BASIC from cassette, 14 minutes.) I can see where the VIC and C64 took a lot from it with all the graphic chars on the keyboard.

      I did have one of the early Sinclair programmable calculators, 32 steps IIRC. All RPN. My 7th grade teachers couldn't understand why I was so interested in base 2, 8 and 16. They never heard of that stuff!

      --
      -- I have a private email server in my basement.
    9. Re:My First Personal Computer by element-o.p. · · Score: 1

      A TRS-80 Model III was my second computer (followed by a C-64) :) IIRC, there was the basic manual for the TRS-80, and then a two volume advanced manual. I spent a lot of time in those, as well. You are correct; they were quite good, too.

      --
      MCSE? No, sir...I don't do Windows. Yes, I am an idealist. What's your point?
    10. Re:My First Personal Computer by kilodelta · · Score: 1

      Want to laugh? When I got my TRS-80 with the DC-1 modem I was using it to connect to a local install of NYBBLINK. It went belly up a couple months after I got the modem. So I was all WTF. My buddy had a Model III and he and I planned out a BBS on it, he wrote code to modify TRSDOS for an ISAM filesystem, and to do multiple RS-232, thus Syslink was born.

      Syslink begat the entire RI BBS scene. I recall hours of testing on that one.

    11. Re:My First Personal Computer by Anonymous Coward · · Score: 0

      yea call us back when you do it a dozen more times this month ... now where the fuck is my whiskey and your sister

    12. Re:My First Personal Computer by SuperKendall · · Score: 1

      I totally forgot about the thermal printer! That was pretty cool.

      I still have both of them somewhere, though I'm really hazy about where I put the thermal printer.

      --
      "There is more worth loving than we have strength to love." - Brian Jay Stanley
    13. Re:My First Personal Computer by Mirvnillith · · Score: 1

      When our Enter membrane gave out (newlines forever!) my dad, don't ask me where/how, bought a keyboard kit (size of a C64 keyboard) where the ZX81 board went inside and we soldered up the keys. There was even a joystick to dual solder to the arrows keys (although very analog stick for very digital keys)!

    14. Re:My First Personal Computer by oh-dark-thirty · · Score: 1

      There was also another external keyboard that became available from a 3rd party; it attached with a ribbon cable and made it much easier to use. I purchased so many dumb upgrades for that thing it was ridiculous....but in the end it was still a great learning tool and is what eventually led me to a career...

    15. Re:My First Personal Computer by evilandi · · Score: 1

      VIC20 came out before the ZX81, ne c'est pas?

      (I just wanted an excuse to reply to someone who actually has a lower ./ ID than mine; we're mostly dead of old age)

      --
      Andrew Oakley - www.aoakley.com
    16. Re:My First Personal Computer by mcgrew · · Score: 1

      I actually bough a surplus, real keyboard like the one you're typing on now after the membrane went out (paid $3 for it), and hardware hacked the shebang so I had a real keyboard on my TS-1000. It lasted about six months before it started blowing diodes. I left the whole mess in my basement when my house was foreclosed in 2003 (or 4, don't remember what year) while going through Paxil withdrawal.

      There are a few other things I left in that basement that I wish I'd have had the room for in the tiny apartment my daughter and I moved into, like an original IBM-XT in working order, and a "portable" from the same era with a five inch screen and 5 meg hard drive that was the size of a smallish suitcase and weighed about 40 pounds. I'll bet that IBM would be worth something today.

    17. Re:My First Personal Computer by mooterSkooter · · Score: 1

      The manual for the Spectrum was simply lovely as well. Not as hardcore as you machine code lovers but a fantastic introduction to sinclair BASIC (and any basic I suppose). It gave examples of every single key-word. A really nice manual - I still have mine!

      This is a sadly missing accompaniment to any computer purchased today. Where will the next generation of programmers come from?

    18. Re:My First Personal Computer by kilodelta · · Score: 1

      Much of my knowledge of the Z80 came from disassembling the BASIC interpreter and TRSDOS operating system.

    19. Re:My First Personal Computer by element-o.p. · · Score: 1

      Good times :)

      --
      MCSE? No, sir...I don't do Windows. Yes, I am an idealist. What's your point?
    20. Re:My First Personal Computer by mcgrew · · Score: 1

      Just wanted to make that clear for younger folks reading along. Kit assemblers our age were not of the same ilk as the hobbyists who designed their own.

      Depends on what you were assembling. I built a Heathkit guitar amp when I was sixteen, and when I plugged it in... nothing. I had to study the schematics to discover that the installation instructions were in error.

      And often, a hack was pretty simple, like when I turned $10 transistor radios into $250 guitar fuzzboxes using $2 worth of parts; that was incredibly trivial, despite the fact that I'd not heard of anyone doing it before. Diagnosing and repairing the amp that was built using erroneous plans was a LOT harder.

  6. Why? by The+Grim+Reefer · · Score: 4, Insightful

    I had one of these, and you couldn't pay me to to use one again. Well you could, but it would have to be a hell of a lot. I can understand why people would be nostalgic about a C64, or even a TI994/A. I had both of those too. But I don't really remember much to like about the ZX81. Even the keyboard/tiny plastic membrane was awful. It was sold by Timex in the US and the "keys" were about the size of calculator buttons. I shelled out the $200 (IIRC) for the 16K RAM pack too. I'm probably suppressing the memory, but I seem to remember there being some issue with it, but I don't remember what it was specifically. It was a big (in relation to the system) clunky thing that plugged into the back. It probably didn't seat correctly or something. Some things should just be allowed to die and be forgotten.

    1. Re:Why? by abigor · · Score: 4, Informative

      The ram pack was prone to wiggling a bit and you'd lose the entire contents of memory. You had to prop it on a book or tape it in place. Kind of a nightmare really. I also hated the ultra-fiddly tape storage, where you had to have the volume and tone adjusted just right to get those weird black bars that showed the program was loading or saving correctly.

    2. Re:Why? by SuperKendall · · Score: 1

      I also hated the ultra-fiddly tape storage, where you had to have the volume and tone adjusted just right to get those weird black bars that showed the program was loading or saving correctly.

      Yes but the bars were very helpful, because you could see if the tape was going bad and had the volume fluctuating... then you could adjust the volume on the fly to adapt, and read in even very worn tapes.

      By "great" I mean at the time of course, it would not be "great" today to have to adjust an analog knob while you were downloading elements of a web page. :-)

      --
      "There is more worth loving than we have strength to love." - Brian Jay Stanley
    3. Re:Why? by Anonymous Coward · · Score: 0

      I also remember that the memory unit seemed to be hot enough to fry an egg on it.

    4. Re:Why? by Colourspace · · Score: 1

      Many stories about putting a cold milk carton (pint of) on it to achieve thermal stability. These overclockers eh? Don't know how good they have it. Both ways, in the snow.

    5. Re:Why? by Dogtanian · · Score: 1

      Most of the shortcomings of the ZX81 that some people like to get snotty about were forgiveable because they were what made the computer affordable.

      For example, a real keyboard would have been nice, but it would also have massively increased the price.

      However, the notorious "RAM pack wobble" (and yes, this was very common- there was even a joke on Red Dwarf about it!) was just crap design. One explanation I heard was that they reused the RAMpack case from the ZX80 for the ZX81 (whose own case was a different shape and wouldn't have fitted as snugly). Don't know if that's true, but it might be:-

      http://www.cosam.org/images/zx81_ram_closeup.jpg

      http://www.polymathperspective.com/wp-content/uploads/2011/06/ZX80-RAM-Pack1.jpg

      --
      "Slashdot - News and Chat Sites Deviant". (Click "homepage" link above for details).
    6. Re:Why? by dkf · · Score: 2

      I also hated the ultra-fiddly tape storage, where you had to have the volume and tone adjusted just right to get those weird black bars that showed the program was loading or saving correctly.

      I never had any trouble, but that was because I had a really cheap and nasty tape recorder without any fancy auto-level circuitry that would try to make the data "sound nicer" (hah!). Wasn't nice to use for playing anything to listen to, but was perfect as a cheap-ass storage device.

      --
      "Little does he know, but there is no 'I' in 'Idiot'!"
    7. Re:Why? by Tastecicles · · Score: 1

      I had the solution for the problems with the memory pack... strip it down, lay it flat and pin-solder it to the mainboard. Sorted. Didn't move after that. Yes, it got bloody hot, so I used a finned copper block with a small fan attached to cool it.

      Only problem I had after that was the bloody thing kept running out of memory(!)

      --
      Operation Guillotine is in effect.
    8. Re:Why? by mcgrew · · Score: 1

      It sounds like you were far better at hacking hardware than software. I just used a thick rubber band to keep it from dying, and never had problems with memory. 16K? Gees, that was a ton of memory!

      I think it's hilarious that viruses are bigger than that these days. Back in the boot floppy days (a little later than the Sinclair) they had viruses that were under 100 bytes. I wrote a six byte program named "reboot.com" that would boot a PC. I used it in a batch file kludge to run DOS programs from a Win 95 PC to play DOS games.

  7. BBC Micro Men by Sponge+Bath · · Score: 4, Informative

    If you haven't seen the movie Micro Men about Clive Sinclair, it is very entertaining. Now playing at your nearest torrent.

    1. Re:BBC Micro Men by Colourspace · · Score: 3, Interesting

      Yes, mod parent up - the UK's Bill Gates (Sinclair) versus a young Steve Jobs (Curry/Hauser - discuss?) in 'silicon fen' and don't forget the Acorn story is the seed of the ARM story. Pun intended. And if anyone is keen to see the actor Martin Freeman, due to play Bilbo Baggins in the upcoming Hobbit films, you can find him here as one of the main protagonists (Curry). No indication on how he might smoke a clay pipe though.

    2. Re:BBC Micro Men by Colourspace · · Score: 1

      But of course Job and Gates were of similar ages..

    3. Re:BBC Micro Men by BasilBrush · · Score: 1

      Yes, mod parent up - the UK's Bill Gates (Sinclair) versus a young Steve Jobs (Curry/Hauser - discuss?)

      I've never really thought about it before, but yes there is a big similarity. The cheap, market share leading but clunky Sinclair computers, vs the high design values at a higher price of the Acorn computers. And then there's Clive Sinclair's phone throwing echoed in Ballmer's chair throwing.

    4. Re:BBC Micro Men by Dogtanian · · Score: 1

      If you haven't seen the movie Micro Men about Clive Sinclair, it is very entertaining. Now playing at your nearest torrent.

      I've a couple of points to make about the programme. It was okay in some respects- nitpicking aside, I knew most of the details already and it seemed to get them broadly right.

      However, I did have a problem with how "Clive Sinclair" was played. Whatever one thinks of the guy- and I've heard some things said in the past that don't cast him in the greatest light- I think he deserved a fair portrayal. Whereas all the other parts (including Acorn's Chris Curry) were acted pretty much straight, Alexander Armstrong's portrayal of Sinclair was- IMHO- not merely tongue in cheek, but an outright comedy-sketch type figure of fun, portrayed in a manner that would have been more at home in one of Armstrong and Miller's own shows. He was basically a foaming-at-the-mouth borderline nutcase with an unconvincing ginger hairpiece, and I doubt that the real Sinclair was ever anything like as ludicrous as portrayed here. It was the contrast between the "comedy" Sinclair and the "straight" everyone else that made this all the more jarring.

      Secondly, not really a criticism, but bear in mind that while the programme might have given the impression that the UK market was just about Sinclair (and the ZX Spectrum) vs. Acorn's "official" BBC Microcomputer, it wasn't. While it's true that there was rivalry between Sinclair and Acorn to get the BBC contract- which the programme focuses on- Acorn's machine (which became the official BBC Micro) ultimately wasn't the Spectrum's rival, as it was far more expensive and ended up selling primarily to the educational market.

      For example, the Commodore 64- although it's not mentioned at all IIRC- was still a major player on the UK market and far closer a rival to the Spectrum, albeit with both machines having niches at slightly different price points.

      Acorn's BBC Micro meanwhile was a great machine, but also too expensive for most people. For all its shortcomings, one wonders if the mass-market, affordable Spectrum wouldn't have been a more suitable candidate for the BBC's aim of computer literacy. Ah well, everyone ended up buying the Spectrum anyway(!)

      --
      "Slashdot - News and Chat Sites Deviant". (Click "homepage" link above for details).
    5. Re:BBC Micro Men by Archibald+Buttle · · Score: 1

      Yes, mod parent up - the UK's Bill Gates (Sinclair) versus a young Steve Jobs (Curry/Hauser - discuss?) in 'silicon fen' and don't forget the Acorn story is the seed of the ARM story.

      Pun intended.

      Heh - I was a big Acorn fan, and always felt that they were a bit like the UK's version of Apple. Part of that was the underdog thing - by the time I was aware of what was going on Sinclair was dominant in the UK home market, the IBM PC was around and Apple was starting it's long decline. I wasn't aware of Apple's prior dominance with the Apple ][, since that machine was an also-ran in the UK.

      Acorn, like Apple, produced higher cost, higher quality products, whilst Sinclair, like Microsoft, aimed for the mass market. During the 80s those parallels were pretty strong - right up until Sinclair got things badly wrong with the QL and his drive to make electric cars, spending a fortune to produce the Sinclair C5, two pretty spectacular failures. Whilst Acorn outlasted Sinclair by a decade, Sinclair sold many more computers than Acorn ever did.

      I don't really see such a strong correlation of personalities though. There's parallels between Gates and Sinclair (the nerdiness), but also between Jobs and Sinclair too (the control freakery, and visionary thing). There's some parallels between Hauser/Curry and Jobs/Woz - with the partners fulfilling similar roles within their organisations on their founding, but the ages around the opposite way. There's also some similarities between those guys and Gates...

    6. Re:BBC Micro Men by uglyduckling · · Score: 1

      I think the BBC did the country, and computing in general, a massive service by choosing the Acorn machine. The BBC Micro really was the pinnacle of 8-bit micro computing, and it's a shame it didn't get the world-wide recognition it deserved. My school finally started replacing their BBC micros with PCs in something like 1993, at which time we had something like 40 machines all networked with central file storage and printing. All the machines were diskless with network logon to a fully-hierarchical file system. There was even crude station to station messaging and screen sharing. Probably the Apple ][ is the only machine to match the BBC and I'm not sure that had the same networking abilities.

    7. Re:BBC Micro Men by Dogtanian · · Score: 1

      My point was that the BBC Micro *was* a great machine in many respects- I would have loved one at the time. However, it was still too expensive for most people, which was an issue with a machine meant to promote computer literacy to the man in the street. Whereas the Spectrum- regardless of its shortcomings- was affordable, and popular for that reason.

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      "Slashdot - News and Chat Sites Deviant". (Click "homepage" link above for details).
    8. Re:BBC Micro Men by Colourspace · · Score: 1

      Good points. I agree about Sinclair probably being a little less rabid in real life than as portrayed by Armstrong, but in terms of not mentioning the C64, or the plethora of other even more exotic machines out at the time, this particular story was about the scene focussed on Cambridge and the original partnership of Curry and Sinclair which deteriorated when Curry left for Acorn. So I think it would have been too much to mesh other early computers into the story in any meaningful way. Having said that, I suppose a couple of machines in the background from the time wouldn't have gone amiss..

    9. Re:BBC Micro Men by Dogtanian · · Score: 1

      As I said, it wasn't a criticism really, as I appreciate that it was really focusing on that particular relationship and battle, not the market as a whole. It was just a simple caveat that those not already familiar with the UK 80s market *might* get the wrong impression that Sinclair and Acorn were the only players (or even that the latter was dominant in mass market terms).

      Certainly, Sinclair and Acorn were rivals on a "personal" level, in that both wanted the BBC contract and Sinclair wasn't happy that he didn't get it, but ultimately they operated in different segments of the computer market. (Though the later QL, had it been successful, might have competed with the Acorn's own BBC Micro, and some suggested that this was in part the motivation behind its early release).

      --
      "Slashdot - News and Chat Sites Deviant". (Click "homepage" link above for details).
    10. Re:BBC Micro Men by Vanders · · Score: 1

      For all its shortcomings, one wonders if the mass-market, affordable Spectrum wouldn't have been a more suitable candidate for the BBC's aim of computer literacy

      The Beeb was well suited to education due to the extreme flexibility it offered through all of it's expansion and I/O capabilities. Hooking up printers, floppy drives, robotic arms or turtles was easy with the Beeb. If you wanted to get a Spectrum to do the sorts of things the Beeb could do out of the box, you'd have to spend hundreds of pounds on expansion cartridges, so the price would probably end up comparable to the Beeb at the end of it anyway.

    11. Re:BBC Micro Men by Dogtanian · · Score: 1

      True- but I'm sure that you'd also have to spend almost as much as a BMW to make a much cheaper family car run as well as a BMW. That's not really the point. :-)

      The bottom line is that the base Spectrum was affordable for the man in the street, whereas the base BBC was much less so. Yes, one could argue that it was worth the extra money, but most people couldn't- or wouldn't- have spent that much, and wouldn't have planned on upgrading it to BBC spec anyway.

      --
      "Slashdot - News and Chat Sites Deviant". (Click "homepage" link above for details).
  8. Obligatory Hendrix Perm by Ackmo · · Score: 2

    My VIC-20 beat up your ZX81 and stole its lunch money.

    1. Re:Obligatory Hendrix Perm by TheGoodNamesWereGone · · Score: 0

      Your Gohill's boots cannot stand up to my ZX-fu!

    2. Re:Obligatory Hendrix Perm by Anne_Nonymous · · Score: 1

      As a former ZX81 user, I can attest to the veracity of this statement.

  9. Not my idea of an 8-bit computer by Just+Some+Guy · · Score: 3, Interesting

    There is even a YouTube channel for the diehard 8-bit fans out there

    8-bit? 2-bit. Good grief, that thing was painfully limited except relative to its immediate competitors. Prior to my parents buying my a ZX81 for Christmas, my home computer was an Atari 2600 with a BASIC Programming cartridge. It had 62 bytes of code memory.

    Let me repeat that in case you thought I misspoke: it had 62, sixty-two, 2^6-2 bytes of memory.

    The ZX81 came with a whopping 16KB, which seemed mansionlike to my very inexperienced mind. But that's like having a better civil rights record than North Korea. It wasn't the worst of the worst but it wasn't far from it.

    --
    Dewey, what part of this looks like authorities should be involved?
    1. Re:Not my idea of an 8-bit computer by Nerdfest · · Score: 2

      I'm pretty sure the ZX-81 only came with 1K (I think the TS-1000 same with 2K). There were expansion boards out to take it up to a whopping 64K.

    2. Re:Not my idea of an 8-bit computer by Sponge+Bath · · Score: 1

      Yeah, when I first read Racing the Beam (a book about the 2600) I thought that had to be a typo. Programmers had to do some heroic things to program that hardware.

    3. Re:Not my idea of an 8-bit computer by Anonymous Coward · · Score: 0

      Yep, 1K it was.

    4. Re:Not my idea of an 8-bit computer by Just+Some+Guy · · Score: 1

      My ZX81 came with an external 16KB RAM expansion. When I said "the ZX81", I meant "the ZX81 my parents bought me for Christmas in hopes that I'd stop bugging them for a computer".

      --
      Dewey, what part of this looks like authorities should be involved?
    5. Re:Not my idea of an 8-bit computer by Gordonjcp · · Score: 1

      The service manual explains how to fit a 2kB or 8kB RAM chip and jumper it to suit. Many people did just that, or even a stack of such chips to make 16k.

    6. Re:Not my idea of an 8-bit computer by Dogtanian · · Score: 1

      Prior to my parents buying my a ZX81 for Christmas, my home computer was an Atari 2600 with a BASIC Programming [wikipedia.org] cartridge. It had 62 bytes of code memory.

      I read a bit about that "BASIC" cartridge a while back. It's obviously a ludicrous idea.

      But then, I'm not attacking the VCS / 2600 in itself for that- it's clearly *not* what the machine was ever intended for. The machine has 128 bytes of RAM but supports up to 4KB ROM cartridges- obviously designed such that the program was stored on ROM, with the precious few bytes of RAM being used for data storage. (And *that* was using assembly language, and it was still apparently damn hard to develop "regular" 2600 software).

      I imagine the BASIC cartridge is concept is actually impressive in a "singing pig" way- the amazing bit is that you can get the pig to sing at all, not that it sings remotely well. But you still wouldn't want to listen to it for long(!)

      Similarly, it's somewhat astounding that they could write a system that left enough RAM to hold *any* program at all once the overheads have been taken into account, but 62 bytes is still.... wow.

      Ironically, I'm guessing that they probably sold this to complete newbies expecting to be able to do *something* with it. Ironically, such people would have been least aware of the potential limitations, least able to get round them, and the most likely to have been put off their first programming experience by something so limiting and unsuitable.

      The ZX81 came with a whopping 16KB, which seemed mansionlike to my very inexperienced mind. But that's like having a better civil rights record than North Korea. It wasn't the worst of the worst but it wasn't far from it.

      As others have mentioned, it only came with 1KB- the 16KB was with the RAM pack. But 16KB was actually quite a decent amount for that time- the Vic 20 only had 3K by default with another 16K using an expansion, so that was in the same ballpark.

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      "Slashdot - News and Chat Sites Deviant". (Click "homepage" link above for details).
    7. Re:Not my idea of an 8-bit computer by Just+Some+Guy · · Score: 1

      The biggest stumbling block was with my parents. That BASIC cartridge wasn't exactly free and they were gun shy about buying me a better system. I kept my mouth shut about the limitations of that little ZX81 until I learned enough to make use of it anyway. I was able to impress them enough with my enthusiasm that it was easier to talk them into getting a Commodore 64 a few months later.

      Again, my own ZX81 came with the 16KB cartridge. It had 1KB "native".

      --
      Dewey, what part of this looks like authorities should be involved?
    8. Re:Not my idea of an 8-bit computer by Dusty101 · · Score: 1

      Now that's an advertising slogan: "The singing pig of the computing world!"

      Another vote for the classic ZX81 here. My first (second-hand, kit-assembled) one wouldn't even save to tape but I wrote programs on it anyway, so I eventually got a second one, prior to graduating to a BBC Model B (which also had a truly awesome BASIC/Assembler combo, & documentation to match).

  10. Before by SuperKendall · · Score: 3, Interesting

    Was the ZX-81 the same as the TS-1000, or was it the same as the one that came after?

    I also had the TS-1000. The ZX-81 came before, I ordered mine from England. The Timex-Sinclair was the U.S. version, already assembled for you.

    Yes, there was not a lot of software, though there was some you could buy on cassette as you say, or type in from magazines. It was however a great way to get into programming. I won my first programming contest with it, writing a crossword generator that won me a Timex-Sinclair 2048...

    There are definitely emulators for both the ZX-81 and TS-1000, though I've not enough nostalgia I know where any are. I'm sure Google can find them.

    --
    "There is more worth loving than we have strength to love." - Brian Jay Stanley
    1. Re:Before by Dogtanian · · Score: 5, Informative

      Was the ZX-81 the same as the TS-1000, or was it the same as the one that came after?

      The ZX-81 came before, I ordered mine from England. The Timex-Sinclair was the U.S. version, already assembled for you.

      There were three distinct "original" ZX machines sold on the UK market:-

      * ZX80 came first in 1980. Black and white, text-based display, 1KB RAM, 4KB OS ROM with integer-only BASIC. Yes, it was very basic, but it was also very cheap- first computer under £100 back when even the Apple II cost many, many times that. Apparently it was also sold in the US in both kit and assembled form. (I don't know if the pre-assembled version was ever sold in its native UK?)

      * ZX81 came next and was even more popular. Essentially an improved and cost-reduced refinement of the ZX80 design. Still black and white with 1KB RAM (expandable to 16KB) and a new improved 8KB OS and BASIC ROM. The Timex Sinclair 1000 mentioned above was an NTSC version with 2KB and other minor differences for the US market, but to all intents and purposes the same machine.

      * ZX Spectrum followed on in 1982. Colour, high-res graphics, sound (albeit crude single channel). There was a US machine based on the Spectrum design (the failed Timex Sinclair 2068) but unlike the TS1000, it made significant changes and improvements to the original design.
      .
      There were very many clones and variants- both authorised and unauthorised- of the above machines in various countries. In part because their architecture was based around clever design using cheap off-the-shelf parts (e.g. the ZX80's inability to compute and display at the same time was because the display was primarily generated in software). This made them easier to rip off than (e.g.) the Commodore 64.

      The ZX81 replaced the ZX80 as it was essentially a refined and improved version of the latter (better OS and moving graphics possible- the ZX80's display flickered and went blank whenever it was busy) and at a lower price (18 chips in the ZX80 replaced with a single functionally equivalent chip). In fact, the ZX80 could be almost upgraded to a ZX81- minus the steady graphics- simply by replacing the ROM OS.

      The Spectrum was a slightly more expensive machine with colour and high-resolution graphics and (very crude) single-channel sound. It was sold alongside the cheaper ZX81 for some time. (I think they stopped making the ZX81 in 1984?) In the long term the Spectrum was the most successful as it was usable for games- its success quickly spawned rivals, but its early lead had already established a network effect (i.e. users led to support and software which led to more users, which led to more support...) and it survived until the early 90s.

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      "Slashdot - News and Chat Sites Deviant". (Click "homepage" link above for details).
    2. Re:Before by SuperKendall · · Score: 1

      Thanks for the timeline - I got on board with the ZX-81 (ordered from England, sent to the U.S.) then after that I was with the U.S. versions - the Timex-Sinclair 1k (forget why I had that since after all i had the ZX-81), the the Timex-Sinclair 2048 (which was the U.S. version of the Spectrum). Or I might have got the 2068, can't remember exactly.

      Too bad the line didn't continue into modern days.

      --
      "There is more worth loving than we have strength to love." - Brian Jay Stanley
    3. Re:Before by cliffjumper222 · · Score: 1

      A friend's Dad bought a ZX80 when they came out and then first thing I did was program a home-made "breakout" game into it. The screen flashed every time the ball went up and down, and then the game ran out of memory.

    4. Re:Before by dkf · · Score: 1

      Too bad the line didn't continue into modern days.

      The successor was the QL (based on the Motorola 64k IIRC, instead of the Z-80 of the older machines), but that basically failed. Too expensive for the market, and not nearly enough of the software that people wanted (games). In some senses, the real successors to the Speccy were consoles and the PC, depending on how much money you had and whether you were just playing games or were determined to write software as well.

      --
      "Little does he know, but there is no 'I' in 'Idiot'!"
    5. Re:Before by Dogtanian · · Score: 5, Informative
      The QL was based on a Motorola 68008, which was a 68000 but with only an 8-bit data bus (instead of 16-bits). (*)

      Anyway, AFAIK, the QL partly flopped because Sinclair aimed at the business market instead of hobbyists.

      Even then (apparently), IBM PC compatibility was quickly becoming more important to such people. Also, I'm assuming that the quirkiness and flakiness of Sinclair products would have been less tolerable to business users in the quickly-maturing mid 80s market than it would have been to grateful first-time hobbyists a few years later.

      In some senses, the real successors to the Speccy were consoles and the PC, depending on how much money you had and whether you were just playing games or were determined to write software as well.

      Not quite, or at least, not directly. The late-80s and early-90s successors to the Spectrum were really the Atari ST and Amiga, the latter of which may have flopped in the US, but was massively popular in Europe around the turn of the decade. It wasn't until circa '92-93 that the ever-falling price of PC clones and the Mega Drive (AKA Genesis) and later SNES took over and *really* started to dominate the home market.

      (Remember that the original NES was never as big a deal here as it was in the US at the time- it was even outsold by the Sega Master System in the UK).

      (*) Sinclair sold the QL on the basis that it was a 32-bit machine, which the 68008 *was*... internally. But then, the Amiga and ST's 68000 was generally considered a 16-bit processor (not 32-bit) due to the size of its data bus, so following the same system the QL would only be an 8-bit machine. It depends what slant you want to put on it!

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    6. Re:Before by user+flynn · · Score: 1

      Yes, there was not a lot of software, though there was some you could buy on cassette as you say, or type in from magazines.

      Lol.. some of the games were so awesome- they blow current generation computer games out of the water.

          Still have the books "Games for your timex sinclair 1000" and "GfyTS 2000" stashed, and the TS 1000 with 16k ram pack in the attic.
         

      --
      In the distance you hear an ominous moo.
    7. Re:Before by westlake · · Score: 2

      Anyway, AFAIK, the QL partly flopped because Sinclair aimed at the business market instead of hobbyists.
      Even then (apparently), IBM PC compatibility was quickly becoming more important to such people. Also, I'm assuming that the quirkiness and flakiness of Sinclair products would have been less tolerable to business users in the quickly-maturing mid 80s market

      The IBM PC was the natural upgrade path from CP/M.

      The big names in business software all had product out for the IBM by 1982.

      Two built-in ZX [85 KB] Microdrive tape-loop cartridge drives provided mass storage [for the QL], in place of the more expensive floppy disk drives found on similar systems of the era.

      http://en.wikipedia.org/wiki/Sinclair_QL

    8. Re:Before by Anonymous Coward · · Score: 0

      You forgot that the Spectrum was originally launched in a 16k & 48k format it was then followed by the spectrum plus which had a real keyboard rather than the touch pad with latex over it one. Then there was the +2 which had a built in cassette player and the +3 with a built in microdrive.

      In the you got a big box with 9 i think bundled cassettes when you bought the machine ranging from games to supercalc (spreadsheet thingy). As the bundles were different for 16 & 48k versions when we updated from the zx81 we had (and relegated it to running our central heating via a rs232 connector) we bought a 16k went home tape to taped all the software then went back to Tandy (UK arm of radioshack) and said we actually wanted to upgrade to the 48k version and thus got both bundles of software which meant us kids got loads of great games to play from text based adventures to platformers and driving (chequered flag)

    9. Re:Before by Dogtanian · · Score: 1

      You forgot that the Spectrum was originally launched in a 16k & 48k format

      Actually, if I'd thought about it I'd have mentioned that, as well as the variants- but that aside it was meant to be a brief, clear and concise overview of the machines, not a complete history. That's what Wikipedia's for, after all ;-)

      --
      "Slashdot - News and Chat Sites Deviant". (Click "homepage" link above for details).
    10. Re:Before by Dogtanian · · Score: 2

      Two built-in ZX [85 KB] Microdrive tape-loop cartridge drives provided mass storage [for the QL], in place of the more expensive floppy disk drives found on similar systems of the era.

      Yes, but this is what I mean about hobbyists vs. business. Hobbyists would have been willing to tolerate the non-standard nature and (arguably) lower reliability of the microdrives, but I suspect that this wasn't so much the case for businesses.

      (IIRC I read somewhere that the QL Microdrives were more reliable than the Spectrum version, but still).

      Also, there were things like the QL being released what some people considered way too early, with early versions having bugs and requiring "dongles" where they couldn't fit all the OS chips inside the case (or whatever the deal was), and there were still the notorious Sinclair shipment delays. Bottom line, it may have been a good value machine in some respects, but my gut reaction is that business users would have been put off by the Sinclair way of doing things, which would have been more at home and tolerated in the hobbyist field.

      --
      "Slashdot - News and Chat Sites Deviant". (Click "homepage" link above for details).
    11. Re:Before by Vanders · · Score: 1

      Then there was the +2 which had a built in cassette player and the +3 with a built in microdrive.

      There was also the +2A (& +2B), which was a +2 but with +3 ROMs, so it could run CP/M and the BASIC commands to access the RAM disk were different (The 128 & +2 used E.g. "SAVE!" to access the RAM disk, while on the +2A/B & +3 it was just drive M: and you could access it through the normal DOS I.e "SAVE M:foo")

    12. Re:Before by oh-dark-thirty · · Score: 1

      I have a QL (currently residing in my father's attic), and recall waiting MONTHS for that thing to ship after we ordered it. It was a bit of a letdown when we finally started using it, and realized it was not the earth-shattering powerhouse it was being sold as. The 'stringy-floppy' drives were a joke, but they were better than cassettes anyway. The lack of decent software was also a killer, and while it was fun to noodle around in BASIC and explore the OS, that thrill only lasted a few months.

    13. Re:Before by mcgrew · · Score: 1

      The successor was the QL (based on the Motorola 64k IIRC, instead of the Z-80 of the older machines)

      Coincidentally, my second computer was based on a Motorola chip (6802 maybe? I'ts been a long time) but it was a TRS-80 MC10. Once when I was running a BASIC program that poked random values into random memory spaces the blocky pixels disappeared and the who screen was filled with tiny pixels. Curious, I bought a repair manual and discovered that its video chip was capable of 640x480 resolution, so with a little investigation I figured out what memory address to change to get to the higher resolution and wrote a drawing program for it that had more features tham Win95's paint program over ten yeras later! It could draw lines, elipses, curves, rectangles, and even print both upper and lowercase (out of the box it was uppercase only). Of course I had to generate my own fonts. I was pretty proud of that hack! I even sold a few copies of it after advertising in a computer magazine (Byte? I don't remember). I never made any money, the copies I sold barely paid for the ad. But it was fun.

  11. Re:The Sinclair is not a big deal by Anonymous Coward · · Score: 1

    Because it predates the C64 and was one of the first, if not the first, computers available on the high-street. In the UK this was sold in WH Smiths, which is basically a newsagents.

    And around here it's a big deal because this is one story that will difficult to post a comment with some MS bashing.

  12. yay by samjam · · Score: 4, Insightful

    I learned on a ZX81, and I still have one.

    I learned Z80 machine code by reading other peoples listings and comparing to the mnemonics at the back of the ZX81 manual.

    I programmed a cool morse-code decoder, and a music program that played sound out of the TV speaker (along with a load of junk).

    I also beat someone elses implementation of read, data & restore.

    Then I went on to a CPC6128, then BBC Micro with econet and advanced programmers guide. Then hacking MSDOS with debug and edlin. Then Windows 3.1 and Delphi; win95, then moving to winXP and Linux and sticking with Linux - for the freedom you know.

    For a while I had a ZX81 emulator on my android phone, but like the other guy said, you couldn't pay me to go back to it.

    It was awful. At the time it was great and helped make me, but I won't go back. You can't make me!

    1. Re:yay by Nerdfest · · Score: 1

      The really nifty part is that the Z80 processor is a superset up the 8080, meaning that most of your Assember code would still run on a Pentium.

    2. Re:yay by Yvan256 · · Score: 1

      If it's a Z80 that's any similar to the one in the first GameBoy, there's nearly 1024 opcodes in that CPU. There's register bit set/bit clear/bit test for all bits of nearly all registers.

    3. Re:yay by rev0lt · · Score: 2

      8080/85 and 8086 have different instruction sets. The 8085 had about 78 opcodes (original Z80 had 153, if I'm not mistaken, including all from the 8085), but 8086 has completely different instructions and register sets, so if you want it to run on a Pentium, you can - but you'll need an emulator :)

    4. Re:yay by Nerdfest · · Score: 1

      Thanks, I thought they were source level compatible.

  13. Memories by Anonymous Coward · · Score: 0

    I started out on a Commie but remember the ZX81 well... Nothing like 300bps! I designed my first war dialer, bbs, bruteforce hacker, and 'raw' data copier in BASIC on a 64... Back when line #s were mandatory and gotos were acceptable. Ahhh, the memories.

  14. Re:The Sinclair is not a big deal by na1led · · Score: 2, Insightful

    The Atari 800 came out in 1978 and was 10 times the computer! When I think of the Sinclair, I think of an oversized calculator, my Magnavox Odyssey could do more. I'm sorry, but the Sinclair was a POS back then and still is today!

    --
    -- By all means let's be open-minded, but not so open-minded that our brains drop out.
  15. This is why the Raspberry Pi will be the new ZX81 by Master+Of+Ninja · · Score: 3, Interesting

    The ZX81 was one of the main reasons the UK had a great generation of programmers (and especially games programmers). The computers were cheap, easy to tinker with and allowed endless modifications. I know that a lot of people are very sniffy about Basic, but the BBC Basic taught in schools at the time was the gateway to self taught computer programming. This is why I think the Raspberry Pi will herald a revolution in computer programming - $25 (?£) compared to the £50 in some of the advertisements for the ZX81. With a keyboard and mouse the raspberry pi will be equivalently priced.

    As an aside I never had the ZX81, only the later Spectrum +3. But those were the glory days of British computing...

  16. The thing to like was what you put into it by SuperKendall · · Score: 5, Interesting

    The cool thing about the ZX-81 in particular (kit version) was how when you built something from scratch you really felt not a care at all about modification to it.

    You didn't like the chiclet keyboard? Neither did I. That's why I replaced with with a spare TI-994A keyboard (real keys). After all, when you were the one that personally attached the keyboard connector you feel no trepidation in taking it out.

    Or the wobbly 16k ram pack. The problem was the thing was as you say rather bulky, and would with some vibration work its way off the connector just enough to crash the system.

    Again when you were the one assembling the case you have no issues attaching struts to the case to make the 16K expansion far more stable.

    That's why there is still as much nostalgia for the ZX-81 as other more popular computers like the Atari or Commodore models that were easier to set up and use, because it was generally a more personal attachment and level of effort involved for those that really got into it.

    Being mass market things I didn't keep any of the other early computers - but I did keep the ZX-81, because a lot of personal effort had gone into it.

    --
    "There is more worth loving than we have strength to love." - Brian Jay Stanley
    1. Re:The thing to like was what you put into it by The+Grim+Reefer · · Score: 1

      Actually I did something similar with the 9900 processor from the TI. The board that it originally came in had a crippled RAM bus or something. So there was a kit that you could build that took better advantage of the 16-bit processor. That was actually a pretty good processor in its day, or so I remember.

    2. Re:The thing to like was what you put into it by Sulphur · · Score: 1

      Actually I did something similar with the 9900 processor from the TI. The board that it originally came in had a crippled RAM bus or something. So there was a kit that you could build that took better advantage of the 16-bit processor. That was actually a pretty good processor in its day, or so I remember.

      It was called grom (graphics rom). You wrote an address to it, and then subsequent reads returned bytes from the file. There was also a gram, but I don't know if that was used on the 99/4A production machine.

    3. Re:The thing to like was what you put into it by Anonymous Coward · · Score: 0

      The biggest bottleneck was the fact that the TI99/4A had the main ram connected to the videochip and could not be addressed directly (meaning: no assembler programs) It also slowed down the access to a crawl because you had to request memory operations to the videochip which was rather busy reading from it to display the screen. The only devices on the CPU's real 16 bit bus were two 8 bit 128 byte ram chips (yes byte) which also contained the CPU's registers.
      The rest of the system used an inefficient (read modify write anyone?) 16 to 8 bit converter.

  17. I didn't realize by bugs2squash · · Score: 2

    That the French version still had a QWERTY keyboard layout. I guess internationalization wasn't its strong point. I learned a lot with mine though, like how to type in endless amounts of machine language in comments.

    --
    Nullius in verba
  18. Ahhh...memories by aaaaaaargh! · · Score: 1

    The ZX-81 was my first computer, too.

    I really liked the little Basic book and 10-line games. Unfortunately, my 16K memory expansion had this annoying feature that it would reset the machine when you knocked on the table -- not so nice when you had entered a long program and it happened before you had saved it to cassette tape. :-)

    And yeah, the keyboard really sucked.

  19. 1k Chess by mccalli · · Score: 2

    How many k? One. One k. Not two k, one k. And here it is.

    Cheers,
    Ian

  20. Re:The Sinclair is not a big deal by Anonymous Coward · · Score: 2, Insightful

    It's not the most popular 8 bit computer made, and you couldn't do a whole lot with it. I'm sure there are fan sites for many different 8 bit systems, why make a big deal about the Sinclair? The Commodore 64 is the most popular 8 bit computer ever made, and I'm sure has about 100 times more fans.

    Yes the C64 was better and has more fans, but for a lot of people the ZX81 was the first affordable and usable home computer. I spent a lot of time typing in code from magazines and hoping the tape recorder would actual save it properly.

    Progressed to a VIC-20 - cartridge slot for RAM pack or even GORF, followed by C64 although my brothers got a Speccy for games.

    All that typing of code and debugging the typos in the magazine must have suited me as I went on to be a developer. Feel sorry for the kids these days - buy a game, plug it in - what are you gonna learn like that?

  21. Re:The Sinclair is not a big deal by kiwimate · · Score: 2

    1. ZX81 was available in March 1981; C-64 was almost a year later.
    2. The ZX81 was several hundred dollars cheaper. People who couldn't afford a Commodore 64 could afford a ZX81. It helped to bring computing to the masses.
    3. A bit of a fuss was made that it only had four ICs inside it. I think the ZX80 had 21.

  22. Still have one by tickticker · · Score: 1

    My buddy had one when we were younger. Years later a neighbor said he had one, brought it over, and it was still unopened in the box! I have it in storage for when it's worth millions... Someday...

  23. Re:Ahhh...memories and Blutack by Anonymous Coward · · Score: 0

    You mean you never had a roll of blutack between the rampack and the computer?

    Solved rampack wobble in an instant!

    I've still got my ZX81. The keyboard still sucks......

  24. WWRDD? by Colourspace · · Score: 1

    What Would Roger Dean Design?

  25. Memories by hAckz0r · · Score: 4, Interesting
    Back in 1980 my counselor at University of Maryland informed me that I would be unable to graduate on time because I was not unable to get into my last course. That was because for 5 semesters I was unable to get a prerequisite course called "Intro to Computer Science". All the engineering and computer science majors had over booked the available computer lab time and the closest I had gotten was 73'rd in line. Yes, you got it, if 73 people dropped out of that class, in the first two weeks, then I could take the class. Problem is if the course is that bad I'm not sure I wanted to be in that class!

    Oh well. At that point I realized that I had already been screwed by this thing called a computer and I didn't even know what the heck it was yet. Not to be beaten and then kicked when down, I forced the University to 'creatively' come up with another way for me to graduate (a semester late, but graduated none the less), and then went out and I bought this Sinclair kit and built my own computer in my dorm room.

    I had to buy all the solder, wire, and stuff, to be able to build and assemble it, and then I went down the dorm hallway knocking on doors until I found someone that actually had taken that computer science class and dragged him down to my room and had them explain what they did. With a three line program printing out my name in a loop I allowed him to go back to his party, and it was history from there. The local electronics swap shop had numerous visits as I bought a second hand teletype keyboard, power supplies, and odds and ends, and rewired them all to interface with this little computer. It morphed over time to have more memory than it was ever designed to have and lots of relays and controls for all sorts of things. The creation kept growing in both size and complexity. Every peripheral that was ever designed for the Sinclair, and later the Timex version of it, was in there somewhere, and then many many creations of my own.

    After graduating I began taking courses in microprocessors and digital electronics and was part of the manufacturing engine that built the next generation of computers. Eventually I became a Computer Scientist, now with fond memories if those simple days, when it was fairly easy to see how something worked and to find ways to improve upon it. Its nice to see that others have fond memories as well. The Sinclair was one of a kind.

  26. Where is the 6502 museum? by NikeHerc · · Score: 1

    The second type of microcomputer I programmed in assembler was the 6502-based Kim-1. For eight bits, it wasn't a bad instruction set, and it made me a fan of the 6502. I bought a Rockwell AIM-65 and loved it. I even bought a bare circuit board for the Motorola 6802 from Peter Stark (anybody remember StarKits?) and modified circuit traces to make the board into a 6502 system. I was very, very proud that the modified circuit board and a monitor (e.g., EPROM-based "o.s.") of my own designed worked the first time I powered it up!

    So where is the 6502 museum?

    --
    Circle the wagons and fire inward. Entropy increases without bounds.
    1. Re:Where is the 6502 museum? by kilodelta · · Score: 1

      I went a different route. I had my TRS-80 Model 1 4K Level I, which I expanded out to 16K Level II. Added the Expansion Interface with 32K of memory boosting my total memory to 48K, plus had the floppy drives, voice synthesizer, voice input, X-10 controller. Had it modified to do lowercase too.

      I understood the Z80 well enough to write a couple of little games in assembler for it too. And the Z80 or some variant is still used to this day. I note it most prevalent in alarm systems of all things. And calculators.

    2. Re:Where is the 6502 museum? by TheGoodNamesWereGone · · Score: 1

      The 6502 was a less-capable processor than the Z-80. It'd been chosen by Wozniak and Jobs for the first Apple because it was cheaper. But to answer your question there are plenty of websites and resources devoted to the Apple ][ series and the Commodore 64. Those are your 6502 museums.

  27. Built mine in high school and used in physics by Anonymous Coward · · Score: 0

    I built mine as an electronics project in the high school. I learned programming on it including basic computer graphics programming. Later I used it program rudimentary simulations for physics class and better understand the formulas and equations. Biggest problem was reliably storing and re-loading programs from the cassette tape player.

    I discovered the Mac (original 128K) when I met my freshman roommate in college and was blown away. What a ride.

  28. Re:The Sinclair is not a big deal by Osgeld · · Score: 1

    with a really shit keyboard

  29. Re:This is why the Raspberry Pi will be the new ZX by Osgeld · · Score: 2

    price is not the only factor

    for one the time had a lot to do with it, now YOU could have a computer without breaking the bank, much more impressive in 81 vs 012, next all you had to do is plug it in and your computing, PI well your going to have to choose and install a linux distro on the thing before it does more than sit there, which sad to say is still a challenge for most people today.

  30. Me & MY ZX-81! by Anonymous Coward · · Score: 0

    The year was 1981 and I knew BASIC before but armed with my trusty Timex Sinclair 1000 I learned machine code & assembly. On a TV!
    http://jetcityorange.com/faq/Timex-Sinclair.jpg

    1. Re:Me & MY ZX-81! by SuperKendall · · Score: 1

      Glad you have that with the RAM pack facing up or it would be on the floor for sure! Good stuff.

      --
      "There is more worth loving than we have strength to love." - Brian Jay Stanley
  31. ZX81 BASIC and FORTH by turgid · · Score: 3, Interesting

    I cut my teeth on the ZX81 when I was 8 years old, and I've still got it... I had a 1k ZX81 which later got upgraded to 16k with a "proper" keyboard. My dad mounted it on a wooden base and fixed the RAM pack to eliminate wobble.

    By the time I was 9 I was a confident BASIC programmer, writing my own (very slow) games, and was learning Z80 machine code (note all you commodore people: the 6502 sucked in comparison).

    When I was 10 I got a multi-tasking FORTH ROM. It was a replacement for the built-in Sinclair BASIC ROM and was 8k. It contained a Real Time multi-tasking threaded-compiled (as opposed to interpreted) FORTH system.

    You can get a ZX81 emulator for *nix and the ROM image is out there somewhere. I downloaded a copy a year or two back. Google for "zx81 husband forth rom".

    Some Sinclair staff who had worked on the ZX81 left to form their own company to make a computer called the Jupiter Ace, which was somewhere between a ZX81 and a Spectrum in terms of hardware (no colour, but high-res graphics and more RAM than the ZX81). The FORTH in that was more conventional.

    Those were the days!

    1. Re:ZX81 BASIC and FORTH by jedwidz · · Score: 1

      Somewhere I have a book consisting of documented source code for the ZX81 ROM.

      Don't get me wrong, I'm not volunteering to scan it and build a ROM image from it...

    2. Re:ZX81 BASIC and FORTH by Anonymous Coward · · Score: 0

      Yep, and that would be redundant.

    3. Re:ZX81 BASIC and FORTH by ccanucs · · Score: 1

      Did anyone try the Jupiter Ace? Basically a FORTH version of the ZX81 but with hints of the later Spectrum with the keys. http://en.wikipedia.org/wiki/Jupiter_Ace I got my hands on one for a while but was never able to do much with it - as I recall for instability reasons of the particular unit I was working with. Great device though and great language (FORTH).

  32. Re:The Sinclair is not a big deal by Anonymous Coward · · Score: 2, Informative

    ... and in the UK, it was more like a couple of years, and factor of 6 price difference (£400 compared to £70 - or £50 if you bought the DIY version).

    And - also in the UK - if you had that kind of cash, you were buying a BBC Micro, not some foreign nonsense! :-) The BBC was just an amazing machine - it had "good engineering" carved all over it. Properly separated OS vs Language ROMs etc. I built a video format converter in 1990, and I was able to test the input timing conformance using a BBC, because there was one of those *VIDEO commands for directly screwing with the video timings. Amazing.

    I never owned a Beeb - I went ZX81 and Spectrum instead, and never regretted it (I wrote this game). But the Commodore 64 was nowhere on the scene. YMMV, of course :-)

  33. I always prefered Sinclair over by unassimilatible · · Score: 2

    Sheridan. Never figured out why Michael O'Hare left Babylon 5 though.

    --
    Slashdot "libertarians": Small government for me, big government for those I disagree with. -1, I disagree with you
    1. Re:I always prefered Sinclair over by Anonymous Coward · · Score: 0

      Politics !

      He was fired to make room for a more "bankable" actor. Critics were that O'Hare a too much of a wooden style also.

  34. Re:The Sinclair is not a big deal by whosdat · · Score: 1

    "The Sinclair"? ZX81 was just _a_ Sinclair.

    ZX Spectrum, on the other hand, was big - at least in Eastern Europe and USSR. There was a dozen or so clones, with schematics printed in the magazines, and later a whole lot of extension tucked on, like whopping 1M RAM, modems, IDE controllers and so on.

    It still has a significant community and demo scene presence.

  35. Re:The Sinclair is not a big deal by nogginthenog · · Score: 4, Informative

    Well, the Atari 800 was 10 times the price of a TS-1000 ($999.95 vs $99.95)

  36. The manuals by david.given · · Score: 1

    I never had one (although I wanted one). Now, after reading about the horrible hacks that Sinclair's engineers did to make it all work (did you know that they repurposed the Z80's DRAM refresh circuit as a video generator? 'strue) I suspect I'm glad I grew up with the BBC Micro instead.

    But I cannot deny that the set of standard manuals had the best cover art on any computer reference book, ever. Mmm, those lovely John Harris paintings... and he sells prints!

  37. Gateway Drug by SuperKendall · · Score: 2

    Just wanted to make that clear for younger folks reading along. Kit assemblers our age were not of the same ilk as the hobbyists who designed their own.

    True, but the brilliance was that it could get you interested in going further. Even though I did no design originally in putting it together I did have to look at pinouts to hook up a real keyboard... kits are a great way to get comfortable with putting things together at all, then you start questioning what the components do and what changes you can make.

    --
    "There is more worth loving than we have strength to love." - Brian Jay Stanley
  38. *yawn* by nurb432 · · Score: 1

    Many of us have larger collections.. Why is this 'news' ?

    --
    ---- Booth was a patriot ----
  39. No more Bandwidth ... dead by bpsheen · · Score: 1

    Slashdotted..... 509 Bandwidth No more error

    --
    My first computer had 1024 bytes of ram
    1. Re:No more Bandwidth ... dead by agulliford · · Score: 2

      They are using ZX81s to run their webserver

    2. Re:No more Bandwidth ... dead by dan_linder · · Score: 3, Informative
  40. Re:The Sinclair is not a big deal by Dogtanian · · Score: 2

    The Atari 800 came out in 1978 and was 10 times the computer! When I think of the Sinclair, I think of an oversized calculator, my Magnavox Odyssey could do more. I'm sorry, but the Sinclair was a POS back then and still is today!

    Well, the Atari 800 was 10 times the price of a TS-1000 ($999.95 vs $99.95)

    You said exactly what I would have! The Atari 800 was an absolutely fantastic machine for the time it came out- I owned a later version called the 800XL, so I've no axe to grind- but it was also damn expensive when first released (late 1979, not 1978).

    Everything I've seen indicates that even at the time people knew damn well that the ZX81 was a pretty basic machine in most respects. Yet it fulfilled the essentials of computing for the hobbyist market, for people who couldn't have afforded a computer before, and for that and the fact they figured out how to build a simple but nevertheless "proper" home computer at such a low price deserves respect.

    Actually, I'm guessing that this is why the ZX81 (and its US version the TS-1000) generally doesn't get as much respect in the US. It wasn't the difference between "having a computer and not having a computer" over there.

    Partly (still guessing) because the TS-1000 didn't come out in the US until over a year after the ZX81 was first launched in the UK, which is a *long* time when the market is evolving as fast as it did in the early 80s. (The ZX Spectrum was already out in the UK by that time). Partly because Americans generally had more disposable income. And also (I assume) because the Vic 20 was cheaper in its home market over there(?). Also, I understand there was a shortage of the RAM packs needed to make the most of the TS-1000, and they weren't that cheap.

    Still, in the UK, it was a milestone machine despite its limitations, and for good reason.

    --
    "Slashdot - News and Chat Sites Deviant". (Click "homepage" link above for details).
  41. Really fond memories by Anonymous Coward · · Score: 0

    Pretty impractical for real purposes but a great learning tool. I read the Chinese bought something like 200,000 for schools and it was probably a good investment. There was at least one book published on creating sensor and control interfaces with the ZX.

    Hard-wired a ZX81 into a case with a real keyboard, power switch and LED, reset switch, hardwired the 16K expansion in so I could reverse the connector for a bus that ran a tone generator and the thermal printer. Had a "stringy floppy" with microcassettes that loaded programs about as "fast" as a Commodore. Adapted a Commodore joystick for the flight sim. Yes, still have the setup.

    Lucky enough to be in a metro where I could pick up the Brit magazine ZX at the news stand. Had to enter the code yourself of course but some of the programs were way better than what was available on cassette.

    I split the warm fuzzies about 50-50 with the Commodore because that was my first real production home computer with quality printers and modems but the ZX was a really fun learning ramp-up nonetheless.

  42. Ah, yes... but it was the TS1000 for me... by King_TJ · · Score: 2, Informative

    I recall magazines selling the ZX-81 in kit form, but at that time, I had no interest in spending a whole $100 (after shipping and/or sales tax, anyway) for a bag of unassembled parts. I really wanted my own home computer though, so the assembled Timex-Sinclair 1000 version was just the thing for me.

    I even owned a very rare plastic carrying case for it, that I had to order direct from Timex with a special coupon to get. As I recall, it held 4 cassette tapes in their plastic cases, the computer and AC adapter, TV converter box, and maybe a spot for that 16K RAM expansion pack (it had 2K internally).

    Good times!

  43. Re:The Sinclair is not a big deal by na1led · · Score: 1

    You get what you paid for. I'd rather save a little and get something useful. When I was a kid, I had the choice of buying a piece of crap now, or saving for something worth while. I chose to wait and purchased my first computer - an Atari 800 xl. Still have it today.

    --
    -- By all means let's be open-minded, but not so open-minded that our brains drop out.
  44. Re:The Sinclair is not a big deal by element-o.p. · · Score: 2

    Be that as it may, it was many peoples' introduction to computers, including me. You never forget your first... ;)

    --
    MCSE? No, sir...I don't do Windows. Yes, I am an idealist. What's your point?
  45. Gawd that keyboard sucked! by billybob_jcv · · Score: 2

    Be nostalgic if you want to - but that keyboard really was horrible. We're not talking Samsung proximity touch screens - this was as painful as the weird old lady who works at Burger King punching a special order into the funky membrane keyboard point-of-sale system.

    It was a blessing that you only had 1K - it meant your Basic program probably wouldn't be very long.

  46. Noteworthiness aside, that computer sucked by Sloppy · · Score: 1

    Before I upgraded to the C64 and became more of an asshole with my-computer-is-better-than-yours flamewars with the Apple IIe and Atari 800 dudes, I had a VIC-20. Even at the time, I knew how bad the Vic was, and there was no one I could snobbishly look down upon, like the douchebag antagonist of any of a dozen early 1980s movies. No one I could look down upon, that is, except the poor TS-1000 / ZX-81 guys.

    "You're running out of memory, so your display is starting to get smaller?"

    "Nice keyboard you've got there! Ha ha ha ha!"

    Good grief, what a piece of shit that machine was. Check this out:

    • "I adore my sixty four"
    • "I grapple my Apple"
    • "I am sorry for my Atari"
    • "I am sick of my Vic"
    • "I ICBM my IBM"
    • "I .. uh .. I .. uh .. something something my Tee Ess One Thousand"

    That junk of junk couldn't even rhyme!

    I'll say this, though: you people got that piece of shit to do what you want, are heroes. I later took a perverse pride in having stretched the capabilities in my 5K (3.5K available to BASIC) Vic, but that's nothin' like the constraints a TS-1000 programmer worked in. You had to be real bad ass to even try, and badder-ass to not give up in despair. TS-1000 programmers rule. I am not worthy to lick your boots.

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    As copyright owner of this comment, I authorize everyone to defeat any technological measure which limits access to it.
  47. Re:The Sinclair is not a big deal by na1led · · Score: 1

    I agree, my first computer had lots of special memories, and I'm sure it's the same for many others. I just don't know why /. tries to make this a big deal. It's not a computer that made a huge significance in history. It was just a cheap - low budget computer that ranked at the bottom of the list.

    --
    -- By all means let's be open-minded, but not so open-minded that our brains drop out.
  48. Bandwidth of advertisments used up... by dan_linder · · Score: 2

    Use the Archive.org link:
            http://web.archive.org/web/20110724142332/http://www.zx81museum.net/adverts.html

    I tried the Coral Cache link:
            http://www.zx81museum.net.nyud.net/adverts.html
    But it returns "500 Internal Server Error".

    Dan

  49. Re:Ahhh...memories and Blutack by dotsandlines · · Score: 1

    Never thought of that - that would have saved me no end of grief.

    But I did have a Winky Board - a little circuit board to go between the ZX81 and the cassette player, presumably to improve reliability of loads and saves. For all I know it just made a couple LEDs blink.

    I had both a ZX81 and a TS1000. (and the TS1500 printer.) One of the computers couldn't use the memory expansion pack, and the other one couldn't use the cassette deck. And me with a stack of tapes of games that required 16K memory...

  50. Re:The Sinclair is not a big deal by Richy_T · · Score: 1

    You're incorrect. It was a first computer for many and paved the way for the Spectrum which was where a whole lot of British people got their start in computers and allowed the UK to have a large technical skill base. Several software companies got their start on the Spectrum and many are still around today.

  51. Obviously enough people still care... by jampola · · Score: 1

    /d'ed!

  52. Hey hey 16k by Jogar+the+Barbarian · · Score: 1

    What does that get you today? http://www.youtube.com/watch?v=Ts96J7HhO28

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    3. Profit!
    2. ???
    1. On Soviet Slashdot, a Beowulf cluster of alien Natalie Portman overlords welcomes YOU!
  53. Multi Emulator Super System ZX 80 by The_Dougster · · Score: 1

    Old ZX 80 hardware is expensive and rare from what I have seen. You can use the MESS Sinclair ZX 80 target to relive those 8-bit days of yore without the fear of electrical or mechanical breakdowns associated with running on the actual hardware. A lot of early microcomputer equipment often had power supply or other problems which means that even if you can get your hands on the real hardware now, and it works, it may not run for long before things start breaking. I do not have any old ZX 80's and don't have a ROM so I'm not sure of the exact legality were I to acquire one from say Mega Upload or such, but I almost suspect that they might be drifting close to the abandonware status in some areas at least.

    There are quite a lot of neat old systems that MESS can emulate. I've been trying to get NitrOS-9 working with a Motorola 6309 myself.

    --
    Clickety Click ...
  54. Where's the ZX Spectrum museum? by Anonymous Coward · · Score: 0

    Great job, Slashdot. Makes me feel like a latecomer all over again.

    1. Re:Where's the ZX Spectrum museum? by ZXDunny · · Score: 1

      http://www.worldofspectrum.org/ Shedloads of documents, scanned books, pretty much all the magazines scanned in, vast library of games to play (with permission to host more acquired regularly), links to emulators *and ROM images* legally thanks to Amstrad (the current owners of the Sinclair Computers IP) allowing free distribution. A fantastic site.

      --
      10 PRINT "SCUNTHORPE"(2 TO 5): GO TO 10
  55. Re:The Sinclair is not a big deal by Anonymous Coward · · Score: 0

    Cool! I remember that game. A bit difficult i think.

    I sneezed my ZX81 to death when the snot hit the slot between the computer and the expansion pack.

  56. Monster Maze by Zoxed · · Score: 1

    A ZX81 was my first computer: I wasted hours playing Monster Maze, typing in programs, saving them to cassette tape, and often loosing all my work when I jingled the 16k RAM pack by accident :-(

    1. Re:Monster Maze by bLanark · · Score: 1

      3D Monster Maze was a totally amazing piece of programming, to fit that into 1K or RAM, and that 1K included system use, leaving you with less - gulp!

      Watch it here

      --
      Note to ACs: I won't mod you up, even if you are being funny or insightful. So take a chance! It's not real life!
  57. Re:The Sinclair is not a big deal by Tastecicles · · Score: 1

    The Holy Grail of ZX-compatible computers for me was the MGT Sam Coupé. Oh, what a beautifully (relatively) fast machine that was! Mine came with the full 4.5MB memory expansion, internal DSDD floppy drive and microdrive, and the Messenger (which was completely useless for state capture from a Speccy, no matter what the ads claimed!)

    --
    Operation Guillotine is in effect.
  58. Re:The Sinclair is not a big deal by IceNinjaNine · · Score: 1

    Battlezone in 32 hours? That's just awesome.

  59. Re:The Sinclair is not a big deal by na1led · · Score: 1

    It may be significant in the UK, but back in those early days, computers were focused around Silicon Valley. In the U.S. which is where computers all started, the Sinclair was barely heard of. Everyone I knew had Commodore's, Atari's, or Tandy computers, you would be laughed at if you owned a Sinclar.

    --
    -- By all means let's be open-minded, but not so open-minded that our brains drop out.
  60. Re:This is why the Raspberry Pi will be the new ZX by Anonymous Coward · · Score: 0

    No it's the new BBC surely.

  61. Re:The Sinclair is not a big deal by Dogtanian · · Score: 1

    The Atari 800XL (essentially an Atari 800 in a sleeker case with some other improvements) came out in 1983, two years after the ZX81, and was nowhere near as expensive as the original 800. By the mid-80s, the later models were being sold by UK chain Dixons for circa £80 for a system with cassette deck or £120 for one with a disk drive, which was fantastic value even then.

    If, as a kid, you'd saved up enough money for an Atari 800 at its original 1979 release price, you were either *exceptionally* hardworking or you had rich parents giving you lots of pocket money!

    --
    "Slashdot - News and Chat Sites Deviant". (Click "homepage" link above for details).
  62. Maybe 30 years old, but still alive and kicking by Anonymous Coward · · Score: 0

    It is interesting that the ZX81 evokes so many memories, and a yearning for nostalgia helps keep it alive I guess. That and people still see programming for 1K (or 16K) as a challenge - especially when trying to write high quality games (there is even now a series of hi-resolution games in 1K!)

    Hardware design for the machine is also relatively easy, so it continues to find a niche in teaching youngsters about the basics of computing, electronics and machine code programming.

    I admit to having started up a few projects to keep the ZX81 interest going, which started off with replacement keyboard membranes (nearly 1000 sold in the past 3 1/2 years) and over the past couple of years, the burgeoning ZX80/ZX81 Forums (http://www.rwapservices.co.uk/ZX80_ZX81/forums/) has thrived and led to new hardware and software being released, including classics such as Miner Man, Nanako in Classic Japanese Monster Castle '81, Virus and even a port of the Quill Adventure Writer.

    From the hardware point of view, the ZXpand and AY add-ons (MrX Sound card and ZXpand-AY) have breathed even more new life into these 30 year old machines, and the latest ZX-ULA2 even allows a turbo mode!

  63. Re:The Sinclair is not a big deal by na1led · · Score: 1

    The Atari 400 was half the price of an Atari 800, or you could buy a Tandy Color Computer for around $400 new. Either way, almost any other computer was far superior to the Sinclair. I never owned an Atari 800, wish I did. My first computer was the Atari 800XL, but it was a birthday gift plus I had saved up some money from my job as a PaperBoy. A friend of mine offered to sell me his Tandy MC10 (similar to a sinclar but still much better) for $80, but I refused. My friends had Atari's and Commodore, so that's what I wanted.

    --
    -- By all means let's be open-minded, but not so open-minded that our brains drop out.
  64. and site exeeded bandwidth :) by Anonymous Coward · · Score: 0

    ...

  65. Tabloid followup to Michael O'Hare by Anonymous Coward · · Score: 0

    Maybe it was drugs?

    One really unfortunate thing, if you can believe it, is that when doing cast commentary for the Season 1 DVDs, they supposely couldn't find him? WTF? Not saying there's anything wrong with someone dropping out, but it's not what you expect from a performer. That raises the question: is the guy still an actor? What does he do for money?

    It's this kind of thinking that makes me want to make up a tabloidish answer. I can see why some people went with drugs.

  66. Re:This is why the Raspberry Pi will be the new ZX by Dusty101 · · Score: 1

    Well, it will come with BBC Basic...

  67. ZX81 high-res graphics, and the Beeb... by Dusty101 · · Score: 1

    I went from a ZX81 to a Beeb. Both wonderfully innovative machines, in their own ways.

    The ZX81 did an amazing amount with very little resources, for very little cash. Even ZX Spectrum-resolution graphics:
    http://www.pictureviewerpro.com/hosting/zx81/softwarefarm.htm

    The Beeb was just a fantastic bit of kit all round (warning: dodgy car analogy ahead) - probably the Rolls Royce of the British 8-bit era? Beautiful engineering and detailing, but pricey...

  68. Ah those were the days... by ccanucs · · Score: 1

    Paired with a school friend for Comp Sci A-level, we developed a micromouse (maze following autonomous self-contained robot - as per the competition that was around in the UK then - none of this remote controlled stuff ;-) ). It was based around a Z80 with on-board memory. Code was developed on and donwloaded via a ZX81. Keeping it cool and making sure it didn't crash while working was an art form (more than once something we failed to perfect). The days when one coded in 1 or 2k and used up all the internal registers of the Z80 for additional storage as cache for things like a partial maze wall map and how one learned how to squeeze bits by using self-modifying code that updated as scenarios were solved. Over 3 decades years later... still in the business. I groan that we "need" 8G of memory and 3GHz CPUs.... As for external storage, - cut my teeth on paper tape on ASR33 terminals; those cassettes for the ZX81 - almost as "bad" , but, at least you could easily find the bit error on a punch tape and correct it with a splicer ;-) Ah the fond memories. Clive - we salute your genius!

  69. Re:This is why the Raspberry Pi will be the new ZX by Osgeld · · Score: 1

    ya and it will boot in room with 32k free...

  70. Re:The Sinclair is not a big deal by Dogtanian · · Score: 2

    The Atari 400 was half the price of an Atari 800

    And that would still have been many times the cost of the ZX81.

    or you could buy a Tandy Color Computer for around $400 new

    Oh, so only four times the US price, then.

    Either way, almost any other computer was far superior to the Sinclair.

    And significantly more expensive.

    My first computer was the Atari 800XL

    As I said, that computer came out two years after the ZX81 had been released in the UK, so you clearly weren't making the same choice as that of people when it first came out. By then the market had moved on quite a lot and prices of more capable machines had fallen (like... the Atari 800XL!)

    but it was a birthday gift plus I had saved up some money from my job as a PaperBoy.

    Okay, so you didn't pay for it all yourself, then.

    Also bear in mind that you're (apparently) arguing from a US perspective. The TS1000 wasn't launched properly in the US until well over a year later, by which time things had already moved on significantly (we already had its successor, the ZX Spectrum). Hence it was never as important over there, at which point it was just a cheap machine rather than the difference between being able to afford a computer and not afford one. (I discussed this in greater depth here).

    The context in which it's most important was the context in which it was launched, i.e. the UK market of early 1981. But feel free to point out that the plebs should have saved up their pennies for a much nicer BMW instead of the mundane family car they bought themselves...

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    "Slashdot - News and Chat Sites Deviant". (Click "homepage" link above for details).
  71. Re:The Sinclair is not a big deal by na1led · · Score: 2

    FYI, the TI/99 was selling for $99 when the Sinclair came out.

    --
    -- By all means let's be open-minded, but not so open-minded that our brains drop out.
  72. Re:The Sinclair is not a big deal by na1led · · Score: 1

    Well, when it came out in the US anyway. No one here even bothered looking at the Sinclair, infact I can't remember anyplace selling one.

    --
    -- By all means let's be open-minded, but not so open-minded that our brains drop out.
  73. Re:The Sinclair is not a big deal by Dogtanian · · Score: 2

    FYI, the TI/99 was selling for $99 when the Sinclair came out.

    I'd already heard about TI slashing their prices to below cost in response to Jack Tramiel of Commodore's merciless price war, but I was sure that was later on. Having checked, this article says:-

    "In February 1983, TI lowered the price to $150 and was selling the computers at a loss. And in June 1983, TI released a redesigned beige cost-reduced version that it sold, also at a loss, for $99."

    That was the better part of a year after even the TS-1000's long-delayed US release anyway. At that point of course the TI/99-4A was better value (even though such obviously unsustainable price-cutting pushed TI out of the market shortly afterwards and left the machine orphaned and unsupported).

    All this is true, but I'm not sure what point you're trying to make. That two long years after its original UK release, in a foreign market competing against slashed-below-cost domestic computers it wasn't such an obviously great buy? Well, yes. But its significance was in the UK market of early 1981, not the US market of early 1983, and there was nothing in the same ballpark pricewise back then. In 1981, most people probably didn't even know they wanted a computer(!)

    --
    "Slashdot - News and Chat Sites Deviant". (Click "homepage" link above for details).
  74. Still breathing new life into this 30 year old by RWAP · · Score: 1

    Actually, it is good to see that a mention of the 30+ year old computer that is the Sinclair ZX81 gets such a good reaction. Recent years have seen an upsurge in interest in the computer, and it still remains a good tool for teaching good programming practices (lots of people like the challenge of squeezing good software into 1K or 16K) and even basic electronics as the Z80A processor is good for linking in your own devices. I am amazed that having started selling replacement keyboard membranes in late 2008, I have sold nearly 1000 membranes for the ZX81 ! I also launched the ZX80/ZX81 forums http://www.rwapservices.co.uk/ZX80_ZX81/forums/ a couple of years ago and this has helped inspire new software and hardware. From a software point of view, 2011 saw plenty of launches of classic games, such as Virus, Miner Man and even Nanako in Classic Japanese Monster Castle '81 by the Mojon Twins. Even the Quill Adventure Writer has been adapted to run on the machine. Hardware development also increased during 2011 with the launch of the ZXpand (32K + SD Card interface), two AY sound interfaces (ZXpand-AY and the MrX Sound Board) and even the ZX-ULA2, a replacement ULA which offers a turbo mode for the machine - available through http://www.sellmyretro.com/

  75. Re:ram pack was prone to wiggling a bit.... by Anonymous Coward · · Score: 0

    The ram pack was prone to wiggling a bit and you'd lose the entire contents of memory. You had to prop it on a book or tape it in place. Kind of a nightmare really.

    There was a ribbon cable you could get that went between the ram pack and the connector on the ZX81.