AMD2901s (was e: Inside old games machines,was: Re: Simulated CP/M-68K?)
ajp166 at bellatlantic.net
Tue Jun 19 13:01:58 CDT 2007
>Subject: AMD2901s (was e: Inside old games machines,was: Re: Simulated CP/M-68K?)
> From: "Ethan Dicks" <ethan.dicks at gmail.com>
> Date: Tue, 19 Jun 2007 13:30:47 -0400
> To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org>
>On 6/19/07, woodelf <bfranchuk at jetnet.ab.ca> wrote:
>> Providing the word length is a multiable of 4 bits that is.
>It sure would be "fun" to debug microcode issues with nine of those
>puppies chained together.
Ignoring race conditions 9 of them are no harder than one.
The nasty is propagation delays. A machine that you can
microcode single step or slow step makes life easier.
I did an "improved 8080" a bunch of years ago using 2 and
it was fun. I have a dozen or so 2901Cs that were supposedly
the fastest of the TTL flavor. Though the ECL parts were much
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