How were 32-bit minis built in the 70s/80?

Chuck Guzis cclist at
Sun May 12 00:21:59 CDT 2019

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.  Pre-microprocessor days.

I can remember back in the early 70s picking up some surplus PCBs with
plain 7400 (not LS) logic, including a couple of 74181 ALUs and a 74199
shift register, both in 0.600" 24 pin DIPS--and lots of SSI TTL logic. I
was mostly interested in scavenging ICs from the thing, so I never
figured out what the PCBs belonged to.

On the other hand, I have a couple of Eurobus wire-wrap boards outfitted
with lots of 10K series ECL.  It appears to be a 12-bit CPU, complete
with memory and registers.   The clock on it is 40MHz.  I don't know
what it could have been.  Mostly, I consider the boards to be a source
of gold-plated wire-wrap pins.


More information about the cctalk mailing list