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Posted By

Gaia
on 2001-04-11
 For the first part of the question

The Reset vector is at and .

You must first bank out the ROMs entirely by writing any value to the register at address .

If you overwrite the RESET vector now, the machine will jump to your routine instead of the standard ROM's reset sequence.

Beware, because you need to handle the IRQs somehow as well, by either masking it with a SEI command or writing your own IRQ handler and setting its address to the IRQ vector at -F



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