On 7/30/20 3:37 AM, tokafondo wrote: > Wavestar wrote >> Lets remember that the Commodore 64's system bus was a 14 to 17 MHz >> computer (Y1 clock) even though the CPU is ~1 MHz. This means whatever is >> emulating the C64 must be able to emulate the system bus and behavior of >> multiple chips at 14-17 MHz. >> >> (http://cbm-hackers.2304266.n4.nabble.com/65816-emulating-a-C64-tp4669364p4669376.html) > > I knew that the VIC-II run at 8Mhz internally, but not that the system bus > run at 14-17 Mhz. If this is the case, it seems that the C64 motherboard can > support actually high speed clocks... for a vintage computer, of course. No, because these high clockspeeds are only found around VIC and only on a few traces. Everything else runs on a much more sedate speed of around 2 MHz max. (/RAS and /CAS for example) or even slower (the CPU at about 1 MHz). GerritReceived on 2020-07-30 08:00:02
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