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- NMIHijack:
- phx
- lda !vwfmode
- tax
- lda.l .NMITable,x
- bne .SpecialNMI ; If NMITable = $00 load regular NMI
- sty $4209
- stz $420A
- stz $11
- lda #$A1
- sta $4200
- stz $2111
- stz $2111
- stz $2112
- stz $2112
- bra .End
- .SpecialNMI
- stz $11 ; Else load special NMI
- lda #$81 ; Disable IRQ
- sta $4200
- lda #$00 ; Set layer 3 X scroll to $0100
- sta $2111
- lda #$01
- sta $2111
- lda #$1F ; Set layer 3 Y scroll to $011F
- sta $2112
- lda #$01
- sta $2112
- .End
- plx
- jml $0082B0|$800000
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