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Tandys Never Die
kevcol writes: "Great article on the SF Chronicle's website on a school bus driver in Contra Costa County California who heads a Tandy model 100 computer user group. The model 100 was the portable version of the beloved TRS-80 (jokingly known as the 'Trash 80') which was the first computer I ever laid fingers on in high school back in the day..."
I got a hold of one of these in high school and was very impressed by its size compared to the heavy ass suitcase portables available at the time. It had great accessories like the tape backup (audio tapes, mind you) and integrated 300 bps modem (you had to connect suction cup-like things to the phone line). You had to code some BASIC to get access to the tape and floppy drives though. Hmm...think the floppy was like 200Kbytes or something in that range. Ah, the memories...
Now that I think of it, I don't think I ever saw him when he WASN'T totally baked. Seriously.
But he could do some cool stuff with it.
pr0n - keeping monitor glass spotless since 1981.
Amstrad CPC Emulators, Apple II Emulators, Arcade Emulators (Multi-Game), Arcadia 2001 Emulators, Atari 2600 Emulators, Atari 5200 Emulators, Atari 7800 Emulators, Atari Lynx Emulators, Coleco Emulators, Commodore 64 Emulators, Magnavox Odyssey Emulators, MSX Emulators, NeoGeo Emulators, NES Emulators, Odyssey Emulators, Sega Genesis Emulators, Sega Master System Emulators, TurboGrafx16 Emulators, Vectrex Emulators.
Which means this tandy is prehistoric
Nowhere near as old as the one in the article, but I had a 1000RL (8086 8mhz I think) and when I upgraded to a better machine, sent the Tandy to my cousins in the Phillipines. Their house had no air conditioning, and the machine was situated in a room that often reached well over 120 degrees Fahrenheit in the midday sun. The house is in a fishing village and is often plagued with floods and monsoons.
I visited the summer the year after and the machine worked flawlessly. I managed to play a Tandy BASIC minigolf game but had to stop because it was way too hot in the room. This continued for a few more years, and about 8 years after my initial purchase of the machine, it stopped working during a visit. I opened the case to discover it had become home to some large native flying insects... which got fried inside. In a weird sort of way, the heat didn't but also did manage to kill it eventually. Those conditions were definitely out of the bounds of a "normal operating environmeny" and I was amazed it lasted so long.
Buying a Tandy again is pretty much out of the question, but during my ownership they certainly grew on me. The RL's 3-voice PCM sound capability allowed me to exercise my interest in sound programming. Had a subscription to a Tandy magazine (can't remember which one) and specifically looked for programs that supported the special Tandy graphics. As my first (IBM-compatible) PC, it served its purpose well, letting my preteen self learn about programming, proprietariness, and patience. It was a great machine for a hobbyist.
...shouldn't throw rocks. There was really no such thing as a uber-TRS-80. It was a code designation for a number of computers made by Tandy Radio Shack using the Z-80 microprocessor. The Model 100 portable was as much of an "official" TRS-80 as the original Model I or business-oriented Model II or FCC-approved Model III etc etc etc....
If you want to buy one, go to EBay. Notice the TRS-80 moniker located upper right in the photo...
Yes, I lusted after a Model 100 when they came out (this is what they looked like if you've never seen one...) but I ended up buying the even more useful Tandy PC-2 pocket computer. It was amazing how many Physics and Chemistry equations you could store in 3.5K. Never would have made it through the core curriculum in college without my artificial memory...;)
"It remains to be seen if the human brain is powerful enough to solve the problems it has created." Dr. Richard Wallace
The model 100 had no floppy interface, though there were external 3 1/2 floppy units available at the time. It did have a built in 300 bps modem The standard modem interface was a DIN 9 adapter on the side of the unit in which RS sold a DIN 9 to RJ-11 cable, though RS did sell an acoustic coupler for use with pay phones. Next to the modem was a secondary cassette tape interface. The screen displayed 40 cols by 8 lines, LCD. It shipped with 8K RAM in its original configuration, though it could be upgraded to 48K. The main CPU was an 8085, not a Z-80. It was in no way binary compatible with the original TRS-80.
This is an important point, the TRS-80 Model I, III, and IV was a completely different computer system from the Model 100. They weren't compatible in any way whatsoever. Just like the Model 11 and 16 wasn't compatible with the model 1/III/IV. Totally different systems. At one point I ran a BBS off of a model I for four years from 1982 to 1986, which my family originally bought in 1977. It was a good computer for its time, though it generated way too much RFI, the buffered expansion interface cable often broke requiring replacement, and the B/W monitor which shipped with the model 1 was junk. The computer, however, was fast with a 1.77 MHz Z-80. Oh well, enough memory lane...
Cheers,
--Maynard
When the Model 100 first came out it had very little memory (16k?). An acquaintance of mine asked if I could help with a programming project on the Model 100. He was a 'numbers' runner (illegal lottery conducted in the poorer sections of the city) and he wanted to keep track of the numbers that were bet. To avoid heavy losses he had to 'lay off' the numbers that were bet too heavily by betting those numbers with someone else. Bets were typically $.25 to $2.00 always in $.25 increments. When he tried to do the job with an M100 there wasn't enough space for the single precision values. I rewrote the program to handle the bets as integer values of quarters (Number 6666 has 450 quarters bet on it so lay off everything above 200 quarters) The amounts were displayed in real floating point values and his helpers knew immediately when a number got bet too heavily. The amounts don't sound like much but the payoff odds were very high. That Model 100 saved a lot of money.
Bruce
Bruce Perens.
I mounted a 16K model-100 on the wall - with the powercord hidden by the dry-wall. It has a crappy "Draw-Random-Lines-And-Pereodically-Clear-The-Scr
It's easily the most facinating thing, for my guests, in my house. It's a reminder to me that computing doesen't have to be high-powered and expensive in order to make our quality of life better.
Side note - the things have a built in 300 Baud modem and a serial port (typical Radio-Shack DIN-5 style), I have another one that I hookup to all the OpenBSD routers/firewalls that I've installed for my clients - the batteries never seem to run out.
Moneyed corporations, non-working 'poor' and criminal prisoners are turning productive citizens into tax-slaves.
So, if this is the kind of laptop you like, you can get modern alternatives, and they even run software for which you can get development systems.
I wrote my first book on a Model 100. It's a great machine, much better than a laptop or a WinCE PDA these days.
Instant on, battery life on the order of 20 hours with a few AA cells, no moving parts so no need to be delicate, display with large pixels easily readable in sunlight or lamplight, very light, full-size keyboard... to get your data into your PC, you just connect it to the serial port and "capture" your data using a program like Procomm, Telix or (for those of you who are a little younger) HyperTerminal. On a Unix system, you just redirect it from the right device to a file. Nice and simple and clean.
Why did I stop using mine? It got stolen at a public library when I turned my back for about a second and a half. Seriously, whoever stole it must have been waiting to snatch it and run like the wind. I looked into replacing it (the theft occurred in the early '90s) but they were still quite expensive at that time.
I bought a 386 laptop instead but regretted it afterward because the M100 was a much better machine with much better ergonomics.
STOP . AMERICA . NOW