Am Donnerstag, 23. Juni 2022, 06:40:23 CEST schrieb Gerrit Heitsch: > On 6/22/22 23:15, Jesus Cea wrote: > > On 22/6/22 21:24, tokafondo_at_tokafondo.name wrote: > >> YIKES!!! I pressed 'sent' by mistake and didn't had completed the post!!! > > > > Remember than RAM is accessed twice per cycle: CPU and VIC-II. > > > > If I would design a fast 6502-like accelerator I would interpose a fast > > cache (write thru with a small (maybe 1-2-4 bytes) write buffer) or, > > using something like a 65816, fast and exclusive RAM in other banks. > > > > Dynamically adjusted 6502 frequency will not get you anything useful, > > because 6502 do a memory cycle per CPU clock, always, even when not > > useful at all. Too complicated, too little gain. > > Didn't they do that in the C128 when running at 2 MHz? it uses clock stretching when accessing i/o, yes -- http://hitmen.eu http://ar.pokefinder.org http://vice-emu.sourceforge.net http://magicdisk.untergrund.net Habe ich schon erwähnt, daß mir HDTV/Blueray/HD-DVD völlig am Allerwertesten vorbeigehen? Das derzeitige Programm noch hochauflösender zu sehen, empfinde ich als Drohung.Received on 2022-06-23 08:00:02
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