Routines
Prev: FF41 Up: Map Next: FF48
FF43: save the status and do the IRQ routine
Used by the routine at F8E2.
FF43 08 PHP save the processor status
FF44 68 PLA pull the processor status
FF45 29 EF AND #%11101111 mask xxx0 xxxx, clear the break bit
FF47 48 PHA save the modified processor status
Prev: FF41 Up: Map Next: FF48