Zitat von
kamoj
It's actually strange there is not one single active forum thread about the use of W65C02S6TPG-14 for repair/tuning.
Well... I think it has been discussed somewhere, but I can't remember where!
The truth is that my relationship with this microprocessor is a love/hate one. Thanks to it, and to the North American company that continues developing it (
WDC) we have been able to do many repairs, new projects, etc. But on the other hand, the lack of backward compatibility has sometimes driven me crazy, working well on some computers, and badly on others apparently the same. What I can say is that, apart from the changes proposed by the manufacturer itself (
read here), many problems derive from the "quality" of the system clock signal:
Zitat von
WDC
All internal clock signals for the W65C02S are generated by the input clock signal Ø2 (IN/PHI2I). WDC recommends using a clock oscillator for PHI2I. Also, PHI2I should be used for the system clock.
Best,
Gerardo