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| author | Jesse Luehrs <doy@tozt.net> | 2014-10-12 00:30:05 -0400 |
|---|---|---|
| committer | Jesse Luehrs <doy@tozt.net> | 2014-10-12 00:30:05 -0400 |
| commit | 69fd133fc4e4e16df4964e810424a720b4ede810 (patch) | |
| tree | c7cccf052a149c0f20cc39cbcff9d919d5edeac8 | |
| parent | 70682cbda993b6e6a552582d0a127c6bd46fe643 (diff) | |
| download | nes-snake-69fd133fc4e4e16df4964e810424a720b4ede810.tar.gz nes-snake-69fd133fc4e4e16df4964e810424a720b4ede810.zip | |
start the ppu dma at the beginning of nmi, not the end
just to ensure that it has enough time (probably not an issue, but why
not)
| -rw-r--r-- | main.s | 11 |
1 files changed, 5 insertions, 6 deletions
@@ -185,6 +185,11 @@ NMI: BEQ end_nmi draw_game: + LDA #$00 + STA $2003 + LDA #$02 + STA $4014 + - LDX num_draws BEQ done_drawing DEX @@ -211,12 +216,6 @@ done_drawing: LDA #$00 STA $2006 -do_dma: - LDA #$00 - STA $2003 - LDA #$02 - STA $4014 - end_nmi: LDA #$00 STA sleeping |