Hand-rolling a CP/M machine
ajp166 at bellatlantic.net
Tue Apr 24 16:51:36 CDT 2007
>Subject: Re: Hand-rolling a CP/M machine
> From: Warren Wolfe <wizard at voyager.net>
> Date: Tue, 24 Apr 2007 15:13:32 -0400
> To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org>
>On Tue, 2007-04-24 at 12:21 -0400, Allison wrote:
>> Another equally sneeky/sleezy trick was to force NOPs (00h) on the buss
>> till you hit the rom address where you disable the force nop logic.
>> That's slow (takes 61.4mS at 4mhz) though.
> Only to a computer... That is .0614 seconds, considerably less than
>a tenth of a second. Studies have shown that most people cannot even
>detect intervals of less than a tenth of a second. Methinks thou dost
>protest too much...
Gee I really didn't think that needed a smiley.
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