From: David Wood (jbevren_at_starbase.globalpc.net)
Date: 2004-02-06 13:18:02
You know, youre exactly right. Thanks for the correction :-P -jbev On Fri, 6 Feb 2004, Marko [iso-8859-1] Mäkelä wrote: > On Fri, Feb 06, 2004 at 05:34:52AM -0600, David Wood wrote: > > The only real reason to use clock stretching is because the cpu doesn't > > support wait states. Most modern cpu's (even the z80) support wait states > > so that a slow IO device can hold the cpu captive while the requested data > > is presented. > > Hmm, what is the RDY input then? Couldn't it be used for implementing wait > states? If yes, why didn't Commodore use it for anything else than blocking > the processor during DMA? On the C64 and C128, the RDY input can be affected > by altering the -DMA input of the cartridge port. > > Marko > > Message was sent through the cbm-hackers mailing list > Message was sent through the cbm-hackers mailing list
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