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snes-asm
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Responds to NMI

This commit is contained in:
greg 2016-12-07 10:52:25 -08:00
parent d8ddf3bba6
commit 67ccdc3052
1 changed files with 36 additions and 13 deletions
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49
test_gfx.asm
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@ -2,11 +2,28 @@
.include "snes_init.asm"
.include "my_custom.asm"
.EQU PalNum $0000
.BANK 0 SLOT 0
.org 0
.section "Vblank"
VBlank:
Set_A_8_XY_16
stz $2115
ldx #$0400 ;setup VRAM
ldx #$0400
stx $2116 ; VRAM address
lda PalNum
sta $2119
lda $4210 ; clear NMI flag
rti
.ENDS
@ -52,6 +69,8 @@ Start:
Set_A_8_XY_16
stz PalNum
Load_Palette_Color $00, $00
Load_Palette_Color $00, $00
Load_Palette_Color $00, $00
@ -84,21 +103,25 @@ Start:
Enable_NMI_And_Joypad
mainloop:
Spin_Loop $02
Reset_Palette_Offset
Load_Palette_Color $00, $00
Load_Palette_Color $00, $00
Load_Palette_Color $00, $00
Load_Palette_Color $ff, $0a
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Spin_Loop $02
Reset_Palette_Offset
Load_Palette_Color $ff, $a0
Load_Palette_Color $00, $00
Load_Palette_Color $00, $00
Load_Palette_Color $ff, $0a
lda PalNum
clc
adc #$04
and #$1c
sta PalNum
jmp mainloop