On Wed, 15 Apr 1998, Allison J Parent wrote:
>
> <signal lines. Every board required it's own regulation, which
> <could take 20% or more of the board space, as well as being a
> <nightmare to keep cool. If you see early pictures of loaded
> <IMSAIs, the cover was always off. This was a necessity, the
> <heat was too much with the cover on. I had to use a 16" fan to
> <keep mine running with 64KB of 2102 based static RAM (not 21L02s
> <BTW, they cost more than the fan did).
>
> Some of the batter boxes had put some thought to air flw and this was not
> a problem. The Northstar Horizon was good, VECTOR MZ, COMPUPRO and there
> was an oufit that made mostly boxes all well cooled.
Integrand?
- don
> In the mid to late 70s it was either boxed systems like TRS-80, Apple
> or designer systems like S100 or SS50. SS50 was 6800 based 50 pin bus
> and tended to be a very different thinking.
>
> Allison
>
>
donm_at_cts.com
*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
Don Maslin - Keeper of the Dina-SIG CP/M System Disk Archives
Chairman, Dina-SIG of the San Diego Computer Society
Clinging tenaciously to the trailing edge of technology.
Sysop - Elephant's Graveyard (CP/M) - 619-454-8412
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see old system support at
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Received on Wed Apr 15 1998 - 13:58:01 BST