What Oscillator freq corresponds to what TWGS/ZipGS operating speed?
For TWGS and ZipGS, the crystal oscillators runs at 4 times the speed of the 65816. Below is a chart showing osc and corresponding TWGS or ZipGS speed. Osc Frequency MHz TWGS/ZipGS Speed MHz 28 7 32 8 33.3333 8.3333 36 9 40 10 42 10.5 46 11.5 48 12 50 12.5 55 13.75 60 15 My understanding is that, if you over-clock a CPU. It just won’t function. You can’t damage it. As the disclaimer said, do it at your own risk. I have tried to run my TWGS at 20 MHz, system won’t boot at all. No damage.
