git.y1.nz

commit eb29f54bfc593b9ef950e3823c0204ec640f1e5d
parent 66351b26870816445aa41ea4640b2982db7dcbf6
Author: Toxa <56631470+untoxa@users.noreply.github.com>
Date:   Tue, 17 Jan 2023 23:07:00 +0400

Merge pull request #469 from michel-iwaniec/nes_oam_init_fix

NES: Initialize OAM at reset
Diffstat:
M
gbdk-lib/libc/targets/mos6502/nes/crt0.s
7
+++++++

1 file changed, 7 insertions(+), 0 deletions(-)
diff --git a/gbdk-lib/libc/targets/mos6502/nes/crt0.s b/gbdk-lib/libc/targets/mos6502/nes/crt0.s
@@ -574,6 +574,13 @@ __crt0_RESET_bankSwitchValue:
     ; Clear RAM and VRAM
     jsr __crt0_clearRAM
     jsr __crt0_clearVRAM
+    ; Hide sprites in shadow OAM, and perform OAM DMA
+    ldx #0
+    txa
+    jsr _hide_sprites_range
+    stx OAMADDR
+    lda #>_shadow_OAM
+    sta OAMDMA
     ; Perform initialization of DATA area
     lda #<s_XINIT
     sta ___memcpy_PARM_2

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