Legacy apps in Windows/OS X was Re: Old MS-DOS & Win Software
ajp166 at bellatlantic.net
Fri Dec 9 13:12:24 CST 2005
>Subject: Re: Legacy apps in Windows/OS X was Re: Old MS-DOS & Win Software
> From: "Chuck Guzis" <cclist at sydex.com>
> Date: Fri, 09 Dec 2005 10:52:21 -0800
> To: cctalk at classiccmp.org
>On 12/9/2005 at 1:38 PM Allison wrote:
>>The early NEC 8080 (round lid prior to 77ish) set the flags wrong
>>I believe it was the sign flag though I'd have to check. After IMSAI
>>and others dumped them for the big they redesigned to exactly match
>>the Intel 8080A, NEC part was 8080AF.
>I thought it was interesting that although IMSAI wouldn't use the NEC 8080A
>part on their CPU cards, they freely used it in their floppy controller.
>Probably to use up old stock, who knows?
>(still got one of them old round-lid NECs)
the FDC was canned code (rom) so they know what it was going to do.
the S100 cpu broke with some basics using the NEC.
Funny thing is the Intel data from '74 may also have been misleading.
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