Questions tagged [vax]

For questions about DEC's VAX 32-bit minicomputers.

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4
votes
2answers
230 views

What random number generator was used in the VAX game Empire?

Around the year 1990, I played the game Empire on a VAX/VMS system. It was a turn-based, text-based-map wargame that later inspired Civilization and Xconq. What was particularly memorable about this ...
3
votes
1answer
197 views

Porting of software from the m68k family architecture to the DEC VAX

I am looking for impressions, memoirs, articles, guidelines - everything that is possible about the unusual direction of software migration. I am interested in non-Unix related code, and preferably ...
6
votes
2answers
398 views

VAX 11/780 16MB memory board - what was the physical size?

I'm trying to get a feel for what it looked like when you designed a computer to have a lot of memory chips stuffed into it. To that end, I found this: https://commons.wikimedia.org/wiki/File:...
3
votes
1answer
219 views

DEC "CI" bus, better known as?

Looking over a list of various VAX processors, I noticed a reference to a "CI" bus. Poking about in Google I can only find very passing mentions of this, and no details. I suspect this had ...
7
votes
2answers
318 views

Were the VAX eXtended Function Control (XFC) instructions ever used commercially?

The DEC VAX has a set of 256 instructions set aside for user addition via microcode edits. Were extension sets ever commercially produced and sold, or was this functionality mostly used in-house? ...