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

Chuck Guzis cclist at
Sat May 11 20:40:29 CDT 2019

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 of a New Machine) that PALs were also used.

What logic family?  There were some minis built with ECL for example.


More information about the cctalk mailing list