Cothrell@DOCKMASTER.ARPA (09/21/87)
Contrary to popular belief...the 65C802 is not 100% compatible with the 6502. I discovered this in building the processor replacement card.. the 65c802 cannot have its cycle extended by "stretching" the Phase 0 clock at a logical 0. the spec sheet specifies a "maximum T0-low" for the phase 0; the max time for my chip (4Mhz version) is 10 us. the 6502 max low time is infinity. the 65C802 max high time is infinity, but the 6502 has a non-infinite max high time. Back to the drawing board.