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.
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
> On May 13, 2019, at 11:31 AM, Ethan Dicks wrote:
>
> On Mon, May 13, 2019 at 8:20 AM Paul Koning via cctalk
> wrote:
> ...
>> On the subject of custom chips: DEC used gate arrays a lot. For example
>> there is the Pro 380 in which much of the discrete chip logic from the Pro
>> 350 has
> Prime used 74181 chips for some of their CPUs. I have a 150 CPU
> board (1980, though it was likely a relatively minor rehash of an
> older board), for example.
To extend this comment, I found 74S181 chips in the schematics for
Prime's first machines, the P100/P200/P300, with dates of
On Mon, May 13, 2019 at 8:20 AM Paul Koning via cctalk
wrote:
> > There were also the AMD2901, 2903, 29203 family of bit-slice components,
> > with the 2910 sequencer.
>
> The VAX 730 was built with 2901s.
Yep. I pulled some 2901s from a VAX 11/730 CPU board in the early 90s
to repair a
> On May 11, 2019, at 11:26 PM, Jon Elson via cctalk
> wrote:
>
> On 05/11/2019 06:14 PM, Warren Toomey via cctalk wrote:
>> I'm building my own 8-bit CPU from TTL chips, and this caused me to think:
>> how were 32-bit minis built in the late 70s and early 80s? In particular,
>> how was the
On Sun, May 12, 2019, 11:35 Tony Aiuto via cctalk
wrote:
>
> Perdue also had Gorge Goble. https://en.wikipedia.org/wiki/George_H._Goble
> ,
> who was a character.
>
ghg still works at Purdue in the same department (Engineering Computer
Network).
Perdue on the other hand sells you chicken at
On 05/12/2019 10:34 AM, Tony Aiuto via cctalk wrote:
Perdue also had Gorge Goble. https://en.wikipedia.org/wiki/George_H._Goble,
who was a character.
INDEED! I sold him a scrap refrigeration compressor which
he used to prove that his proprietary mix of refrigerants
would return the oil to
On Sat, May 11, 2019 at 10:17 PM Charles Dickman via cctalk <
cctalk@classiccmp.org> wrote:
> On Sat, May 11, 2019 at 8:50 PM Steve Malikoff via cctalk <
> cctalk@classiccmp.org> wrote:
>
> > I could be remembering incorrectly but I think the Gould PN6080 mini we
> > had exclusively for third
> -Original Message-
> From: cctalk On Behalf Of Steve Malikoff
> via cctalk
> Sent: 12 May 2019 01:50
> To: General Discussion: On-Topic and Off-Topic Posts
>
> Subject: Re: How were 32-bit minis built in the 70s/80?
>
> Warren said
> > I'm buildin
> -Original Message-
> From: cctalk On Behalf Of ben via cctalk
> Sent: 12 May 2019 01:48
> To: cctalk@classiccmp.org
> Subject: Re: How were 32-bit minis built in the 70s/80?
>
> On 5/11/2019 5:14 PM, Warren Toomey via cctalk wrote:
> > I'm building my o
On 5/11/19 9:52 PM, ben via cctalk wrote:
> On 5/11/2019 10:12 PM, Chuck Guzis via cctalk wrote:
>
>> Personally, I preferred "the Naked Mini"
> Used for porn world wide.:)
>> --Chuck
>
Maybe--it was an 8 bit mini, so not very powerful. Mostly used in what
we'd call "embedded" applications.
On 5/11/2019 10:12 PM, Chuck Guzis via cctalk wrote:
Personally, I preferred "the Naked Mini"
Used for porn world wide.:)
--Chuck
On 5/11/2019 9:28 PM, allison via cctalk wrote:
On 05/11/2019 09:30 PM, ben via cctalk wrote:
On 5/11/2019 6:28 PM, allison via cctalk wrote:
Not all were 74181 based, Thats an early 1972 part and but 1975 it was
already getting old though useful as it evolved to 74S and 74F series.
The
On 5/11/19 8:52 PM, Nigel Williams via cctalk wrote:
> Marketing at the time even had a catchy name for the 32-bit minicomputer:
>
> https://en.wikipedia.org/wiki/Superminicomputer
>
Personally, I preferred "the Naked Mini"
https://www.computerhistory.org/revolution/minicomputers/11/359
Marketing at the time even had a catchy name for the 32-bit minicomputer:
https://en.wikipedia.org/wiki/Superminicomputer
On 05/11/2019 09:30 PM, ben via cctalk wrote:
> On 5/11/2019 6:28 PM, allison via cctalk wrote:
>
>> Not all were 74181 based, Thats an early 1972 part and but 1975 it was
>> already getting old though useful as it evolved to 74S and 74F series.
>> The 82s100 and 105 series were out there and
On 05/11/2019 06:14 PM, Warren Toomey via cctalk wrote:
I'm building my own 8-bit CPU from TTL chips, and this caused me to think:
how were 32-bit minis built in the late 70s and early 80s? In particular,
how was the ALU built? I know about the 74181 4-bit ALU, and I know (from
reading A Soul of
On Sat, May 11, 2019 at 8:50 PM Steve Malikoff via cctalk <
cctalk@classiccmp.org> wrote:
> 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
On 5/11/19 4:14 PM, Warren Toomey via cctalk wrote:
> I'm building my own 8-bit CPU from TTL chips, and this caused me to think:
> how were 32-bit minis built in the late 70s and early 80s? In particular,
> how was the ALU built? I know about the 74181 4-bit ALU, and I know (from
> reading A Soul
On 5/11/2019 6:28 PM, allison via cctalk wrote:
Not all were 74181 based, Thats an early 1972 part and but 1975 it was
already getting old though useful as it evolved to 74S and 74F series.
The 82s100 and 105 series were out there and even by 1980 the AMD 2900C
series was getting long in the
Warren said
> I'm building my own 8-bit CPU from TTL chips, and this caused me to think:
> how were 32-bit minis built in the late 70s and early 80s? In particular,
> how was the ALU built? I know about the 74181 4-bit ALU, and I know (from
> reading A Soul of a New Machine) that PALs were also
On 5/11/2019 5:14 PM, Warren Toomey via cctalk wrote:
I'm building my own 8-bit CPU from TTL chips, and this caused me to think:
how were 32-bit minis built in the late 70s and early 80s? In particular,
how was the ALU built? I know about the 74181 4-bit ALU, and I know (from
reading A Soul of a
> I'm building my own 8-bit CPU from TTL chips, and this caused me to
> think: how were 32-bit minis built in the late 70s and early 80s? In
> particular, how was the ALU built? I know about the 74181 4-bit ALU,
> and I know (from reading A Soul of a New Machine) that PALs were also
> used.
On 05/11/2019 07:14 PM, Warren Toomey via cctalk wrote:
> I'm building my own 8-bit CPU from TTL chips, and this caused me to think:
> how were 32-bit minis built in the late 70s and early 80s? In particular,
> how was the ALU built? I know about the 74181 4-bit ALU, and I know (from
> reading A
I'm building my own 8-bit CPU from TTL chips, and this caused me to think:
how were 32-bit minis built in the late 70s and early 80s? In particular,
how was the ALU built? I know about the 74181 4-bit ALU, and I know (from
reading A Soul of a New Machine) that PALs were also used.
Did companies
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