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fix nmi scroll update

This commit is contained in:
Safyrus 2022-04-06 20:21:03 +02:00
parent fe7b09d97b
commit ae0f787453
1 changed files with 3 additions and 4 deletions
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7
asm/vector/nmi.asm
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@ -199,10 +199,9 @@ NMI:
LDX scroll_y
STX PPU_SCROLL
LDX #$00 ; set bit 15 of t in PPU to 0
STX PPU_ADDR ; (because, for unknown reason)
LDX #$00 ; to fix scrolling in the wrong nametable.
STX PPU_ADDR
; set high order bit of X and Y
LDA ppu_ctrl_val
STA PPU_CTRL
@scroll_end:
@done: