6 Oct
2023
6 Oct
'23
11:07 a.m.
Quote:
I could be remembering incorrectly but I think the
Gould PN6080 mini we had exclusively for third year
comp sci at Macquarie Uni in the mid/late 80s was 32-bit made up of AMD2900 family logic
(2901 ALU's).
Find attached two pages of the CPU drawings of a Concept 32/67 andÂ
PowerNode 6000. Here the AMD 2901s show up. You remembered correctly!
Geert Rolf
owner of a PowerNode 6040 -- see
https://geerol.home.xs4all.nl/DownLoad/UTX-paper.pdf
6 Oct
6 Oct
1:32 p.m.
New subject: How were 32-bit minis built in the 70s/80?
Interesting note. Back in the 80's a company called Northern Telecom used
2900 ALU chips to run the SL-1 PBX. It was very popular in hospitals and
large firms where down time was bad.
It had redundant memory and processor cards for failover. And battery
backup to stay up during a power failure. Certain alarms caused the switch
to dial a reporting center and send the alarm.
Programs were stored on a 3M cartridge tape (6150?) where diagnostic
programs ran off hours and communication was accomplished via a 300 baud
dialup modem and a local hard copy terminal (usually like a DEC LA36).
Call detail records were stored on a 9 track tape.
-Ken
On Fri, Oct 6, 2023, 8:33 AM Geert Rolf via cctalk <cctalk(a)classiccmp.org>
wrote:
Quote:
I could be remembering incorrectly but I think
the Gould PN6080 mini we
had exclusively for third year
comp sci at Macquarie Uni in the mid/late 80s was
32-bit made up of
AMD2900 family logic (2901 ALU's).
Find attached two pages of the CPU drawings of a Concept 32/67 and
PowerNode 6000. Here the AMD 2901s show up. You remembered correctly!
Geert Rolf
owner of a PowerNode 6040 -- see
https://geerol.home.xs4all.nl/DownLoad/UTX-paper.pdf
415
days inactive
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