Corrupt gfx?
- ascii-table ptr @$6c
- direct access of ~$158B
Patched code not being hit?
-
did it contain call to bios or other address that might be over-patched?
-
watch out for mame OUT/IN detection and OTIR/INIR
Irqs not firing despite EI?
- int bit in vdp register 1
- reti needs to have been called
- retn anywhere?
regex
^($\w\w\w\w) (.*) PATCH($1,3)\n $2\nENDPATCH($1,3)\n
^ram:(\w\w\w\w) (.*)
PATCH($$$1,3)\n
$$ for literal dollar in replacement