| Chase H.Q. | Routines |
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setup_interrupts builds a table at $FD00 containing 257 occurences of $FE. Address $FEFE contains a JP $EF19 to here.
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| interrupt_entry | EF19 | PUSH AF | Preserve registers | |
| EF1A | LD A,$FF | Set <interrupt flag> to $FF -- Self modify 'LD A,x' @ pm_wait_for_interrupt | ||
| EF1C | LD ($EF14),A | |||
| EF1F | POP AF | Restore registers | ||
| EF20 | EI | Enable interrupts | ||
| EF21 | RET | Return | ||
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