Hello! Peter Rittwage wrote: > There is also a C64 "slowdown" cart which attached the IRQ line to a > timer and potentiometer. It would inject IRQ's to slow down, or pause, > the running program. > It was a simple cart circuit, and it had really odd effects on different > games. That's a refreshingly simple idea, but injecting random IRQs can really confuse running software (besides the fact that it can have interrupts disabled). How about: * Using the DMA line to halt the CPU completely (is that even possible)? * Using the NMI line with ROM control lines to throw the computer into the UltiMax mode and place a loop at the NMI handler? Quite more complex, but one 16V8 would do. Regards, Michau. Message was sent through the cbm-hackers mailing listReceived on 2013-07-13 15:00:08
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