Cyprian wrote:1) does $FF820A switch (besides Horizontal/Vertical synchronisation) also the Main clock to external
ACIA chips need exact clock (500KHz) from Glue.
mrbombermillzy wrote:So this input is not a seperate clock that sync locks Shifter only and the rest of system stays at 32Mhz then?
Wouldnt that screw up any advantage of genocking as the FDD/Sound/DMA/ACIA/MFP timings, etc would be trashed by the changes? Or is it the case, as Ijor was saying that keeping the alternative clock signal very close to 32Mhz wouldnt make things break?
Also, as an aside, if the external sync bit is NOT set and there is a different clock on pin 4 of video port, does the shifter then stay with the system 32Mhz clockrate?
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