Have you ever wondered why C uses octal? Or why Unix (and therefore chmod(1)) takes octal numbers for permissions? It's because C and Unix were initially developed on 36-bit DEC machines.
No. Unix V1 was done on an PDP-7 18bit computer. somewhere around V2 or V3 they switched to an PDP-11 16bit machine. C only came with V5 on 16bit.
But all these machines were octal, grouping bits in groups of 3. PDP-7 6*3, PDP-11 1+5*3 (and 18bit addresses when using MMU).
Only the VAX (32bit) and microprocessors (4/8/16/32bit) came as hex(ed) machines.
I'm not *giving* them away, but I do have several "extra" PDP-11/70s for which I'm willing to entertain serious offers.
Now if I just had space (1 room flat...), I would immediately take you up on that one. 11/70 would definitely beat my Pro350.
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Re:how fast were these things?
on
PDP-10 Revival
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· Score: 1
The PDP-10 had magnetic core memory, which means it could not have cycled much faster than 1 MHz. It also did not have modern features like pipeline caches
KL-10 had an cache as option, that was basically the difference of buying an model 2040 or an 2050.
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Re:It would be cool to see an ITS around again ...
on
PDP-10 Revival
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· Score: 1
It would be cool to see an ITS around again
You may do so soon. There is a guy over on alt.sys.pdp10 who has salvaged an KS-10 and is restoring it successfully. He intends to put ITS on it and connect it to the net.
And in a (lot longer) while my PDP-10 clone (the one mentioned by Lars) should be a possibility.
Your point about sites being pulled when the domain expires is a good one. The problem is that there is no 'standard' way of archiving them into cold storage where they can later be retrieved Web caches? Particulatly client side ones, such as wwwoffle. I have quite a few pages in mine that no longer exist on the web.
At least with the older media (newspapers/mags etc) someone would usually keep a copy somwhere so it could be looked at by suceeding generations but not with a website. Newspapers/mags are not kept indefinitely at the local news stand. They appear, are sold, and are gone. The news stand is just a distribution point, the storage is at the readers place. Same with web sites, they should be thought of as distribution points, storage then happening on all the readers computers.
> I guess we should assume that IRIX is officially dead
Or that it is really going to be relegated to high end stuff such as Origins. Linux has got quite a bit of way to go until it can do one of them justice (and NT is completely out of discussion).
> If they're not porting IRIX to Intel, and they're certainly not going to continue developing their MIPS hardware
They are not porting Irix to IA-32 (x86), which was NT only and is now also Linux, but they intend to have all 3 of them on the IA-64 (Merced).
That is official, by the way, from the SGI representative who does our university.
> What a shame. IRIX and Solaris are the only serious scalable UNIXen
So it does seems they both will be with us for a while. Small stuff on Linux, big on Irix/Solaris. And hopefully nothing on NT:-).
> GPL protects the rights of the author > BSD license is more free
I do not think that that describes the crucial difference. I fact it is borderline to being simply wrong.
Both licenses aim at protecting the author(s), but they have different ideas of what constitutes "the author(s)".
- BSD assumes an small central group ("cathedral") of authors (such as CSRG), who want to retain control over the end product.
- GPL assumes multiple/many distributed ("bazaar") authors who want to attract more participants by guaranteeing no hording.
So it is mainly an centralism/anarchism thing, an issue of social organisation style.
To select a license for your project, read above two descriptions and select which authorship model you are more comfortable with. Then use the license developed for that type. Now what about that for choice?
Slashdot Mirror
Come on, 2.3d is totally outdated. Bob Supniks SIMH Emulator is now up to version V2.8-5
http://simh.trailing-edge.com/
(Sorry Tim for the slashdotting of your server)
No. Unix V1 was done on an PDP-7 18bit computer. somewhere around V2 or V3 they switched to an PDP-11 16bit machine. C only came with V5 on 16bit.
But all these machines were octal, grouping bits in groups of 3. PDP-7 6*3, PDP-11 1+5*3 (and 18bit addresses when using MMU).
Only the VAX (32bit) and microprocessors (4/8/16/32bit) came as hex(ed) machines.
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I'm not *giving* them away, but I do have several "extra" PDP-11/70s for which I'm willing to entertain serious offers.
Now if I just had space (1 room flat...), I would immediately take you up on that one. 11/70 would definitely beat my Pro350.
--
KL-10 had an cache as option, that was basically the difference of buying an model 2040 or an 2050.
--
You may do so soon. There is a guy over on alt.sys.pdp10 who has salvaged an KS-10 and is restoring it successfully. He intends to put ITS on it and connect it to the net.
And in a (lot longer) while my PDP-10 clone (the one mentioned by Lars) should be a possibility.
--
Cool, an entire network of multi-level open relays for IP packets. Just what the spammers ordered.
Will somebody please make an list of these sites, so that we can RBL them on our routers?
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Web caches? Particulatly client side ones, such as wwwoffle. I have quite a few pages in mine that no longer exist on the web.
At least with the older media (newspapers/mags etc) someone would usually keep a copy somwhere so it could be looked at by suceeding generations but not with a website.
Newspapers/mags are not kept indefinitely at the local news stand. They appear, are sold, and are gone. The news stand is just a distribution point, the storage is at the readers place. Same with web sites, they should be thought of as distribution points, storage then happening on all the readers computers.
> I guess we should assume that IRIX is officially dead
:-).
Or that it is really going to be relegated to high end stuff such as Origins. Linux has got quite a bit of way to go until it can do one of them justice (and NT is completely out of discussion).
> If they're not porting IRIX to Intel, and they're certainly not going to continue developing their MIPS hardware
They are not porting Irix to IA-32 (x86), which was NT only and is now also Linux, but they intend to have all 3 of them on the IA-64 (Merced).
That is official, by the way, from the SGI representative who does our university.
> What a shame. IRIX and Solaris are the only serious scalable UNIXen
So it does seems they both will be with us for a while. Small stuff on Linux, big on Irix/Solaris. And hopefully nothing on NT
--
> GPL protects the rights of the author
> BSD license is more free
I do not think that that describes the crucial difference. I fact it is borderline to being simply wrong.
Both licenses aim at protecting the author(s), but they have different ideas of what constitutes "the author(s)".
- BSD assumes an small central group ("cathedral") of authors (such as CSRG), who want to retain control over the end product.
- GPL assumes multiple/many distributed ("bazaar") authors who want to attract more participants by guaranteeing no hording.
So it is mainly an centralism/anarchism thing, an issue of social organisation style.
To select a license for your project, read above two descriptions and select which authorship model you are more comfortable with. Then use the license developed for that type. Now what about that for choice?
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