Hallo Nicholas, > ..... But the CPU also doesn't have a Phi2 output, just like the 8501. Who knows if this was done to save a pin for an extra port bit ....... Just FYI, I hope you remembered that I succeeded in replacing the 6510 of the C64 and the 6502 of several CBMs/PETs/VIC20 with a 65SC816. This uP hasn't a PHI2 either. I created this signal by delaying the PH0 signals thru two 74F04 gates. I know by experience that this delay is essential because a Atom Acorn refused to operate at all without this delay. But to be honest, I never tried the circuit on a C= without this delay. Groetjes, Ruud - This message was sent through the cbm-hackers mailing list. To unsubscribe: echo unsubscribe | mail email@example.com.
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