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From: quadibloc <quadibloc@gmail.com>
Newsgroups: comp.arch
Subject: Re: mainframe vs mini, old and slow base and bounds, Why I've Dropped In
Date: Mon, 23 Jun 2025 20:04:49 +0000
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On Mon, 23 Jun 2025 13:23:02 +0000, EricP wrote:

> The 24-bit Four-Phase Systems AL1 (1969) was 9 chips claims to be first.
>
> The 20-bit Garrett AiResearch CADC (1970) which also claims to be the
> first microprocessor chip set was MOS based and used the the F14
> fighter.

Those were the two "exotic exceptions" that I was thinking of.

On the other hand, the 4004 wasn't exotic. And since the Intel 8008
dates from 1972, I was wrong to think that 8-bit microprocessors were
nonexistent in 1973, so it was not correct for me to claim that it was
impossible for the IBM 370/115 to have used some sort of microprocessor
as its basis - even if I still would tend to suspect that it was
unlikely.

John Savard