Emulate 6502 second processor boot mode properly
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tom-seddon commented
The CPU currently runs at full whack, rather than 200 KHz or whatever it is. This should be testable: do a parasite reset, see whether it gets as far as writing to FIFO1 after N host cycles.
A separate record of parasite CPU cycles executed will be required, as it will no longer be deducible from the overall system's 4 MHz cycle count.