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iigs-game-engine
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Disable OAM DMA in ROM

This commit is contained in:
Lucas Scharenbroich 2023-07-04 16:19:33 -05:00
parent 63d2f0ea46
commit ab202470a9
1 changed files with 5 additions and 2 deletions
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7
demos/smb/rom2.s
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@ -988,8 +988,11 @@ ScreenOff sta Mirror_PPU_CTRL_REG2 ;save bits for later but not in registe
lda #$00
jsr InitScroll
jsr OAM_ADDR_W ;reset spr-ram address register
lda #$02 ;perform spr-ram DMA access on $0200-$02ff
jsr SPR_DMA_W
; PPU harness just reads from $200 before calling the NMI task
; lda #$02 ;perform spr-ram DMA access on $0200-$02ff
; jsr SPR_DMA_W
ldx VRAM_Buffer_AddrCtrl ;load control for pointer to buffer contents
lda VRAM_AddrTable_Low,x ;set indirect at $00 to pointer
sta $00