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⌂ ∞ ▽ Elite on the 6502

Utility routines: Vectors_b1

[NES version, Bank 1]

       Name: Vectors_b1                                              [Show more]
       Type: Variable
   Category: Utility routines
    Summary: Vectors and padding at the end of ROM bank 1
  Deep dive: Splitting NES Elite across multiple ROM banks

    Context: See this variable in context in the source code
 References: No direct references to this variable in this source file




 FOR I%, P%, $BFF9

  EQUB $FF              ; Pad out the rest of the ROM bank with $FF

 NEXT

IF _NTSC

 EQUW Interrupts_b1+$4000   ; Vector to the NMI handler in case this bank is
                            ; loaded into $C000 during start-up (the handler
                            ; contains an RTI so the interrupt is processed but
                            ; has no effect)

 EQUW ResetMMC1_b1+$4000    ; Vector to the RESET handler in case this bank is
                            ; loaded into $C000 during start-up (the handler
                            ; resets the MMC1 mapper to map bank 7 into $C000
                            ; instead)

 EQUW Interrupts_b1+$4000   ; Vector to the IRQ/BRK handler in case this bank is
                            ; loaded into $C000 during start-up (the handler
                            ; contains an RTI so the interrupt is processed but
                            ; has no effect)

ELIF _PAL

 EQUW NMI                   ; Vector to the NMI handler

 EQUW ResetMMC1_b1+$4000    ; Vector to the RESET handler in case this bank is
                            ; loaded into $C000 during start-up (the handler
                            ; resets the MMC1 mapper to map bank 7 into $C000
                            ; instead)

 EQUW IRQ                   ; Vector to the IRQ/BRK handler

ENDIF