read/write 512,513$0200,$0201VDSLSTVector to List Interrupt routineboth59315/$E7B3 (a RTI instruction)


  • All 6502 registers have to be saved before and restored after the interrupt (before the RTI instruction).
  • The interrupt routine must end with an RTI (return from interrupt).


  • Set bit 7 in the display list line you want the interrupt to occur
  • set VDSLST to your routine
  • set bit 7 of NMIEN to enable the interrupt

see also: Display List Topics, NMIEN, Display List Instruction table

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« This page (revision-2) was last changed on 17-Jul-2010 20:30 by Florian Dingler