125 lines
3.0 KiB
NASM
125 lines
3.0 KiB
NASM
;============================================================================
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; Includes
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;============================================================================
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;== Include MemoryMap, Vector Table, and HeaderInfo ==
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.INCLUDE "header.inc"
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;== Include SNES Initialization routines ==
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.INCLUDE "init.inc"
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.INCLUDE "LoadGraphics.asm"
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.INCLUDE "debug.asm"
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;============================================================================
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; Main Code
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;============================================================================
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.BANK 0 SLOT 0
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.ORG 0
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.SECTION "MainCode"
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Start:
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InitSNES ; Clear registers, etc.
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; Load Palette for our tiles
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LoadPalette OptixxPalette, 0, 16
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; Load Tile data to VRAM
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;LoadBlockToVRAM TilesData, $0000, $0020 ; 2 tiles, 2bpp, = 32 bytes
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;LoadBlockToVRAM OptixxData, $0000, 0xa00 ; 160 tiles, 2bpp, = 2560 bytes
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;LoadBlockToVRAM OptixxData, $0000, 0x1e00 ; 480 tiles, 2bpp, = 7680 bytes
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LoadBlockToVRAM OptixxData, $0000, 0x3c00 ; 960 tiles, 2bpp, = 15360 bytes
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lda #$80
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sta $2115
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;ldx #$0800 ; 5AF
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ldx #$4000 ; 5AF
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stx $2116
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ldx #$0
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Start_do:
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stx $2118
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inx
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cpx #960
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bne Start_do
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; Setup Video modes and other stuff, then turn on the screen
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jsr SetupVideo
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lda #65
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sta $3000
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lda #66
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sta $3000
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lda #67
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sta $3000
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printf str_COP
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lda #65
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sta $3000
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lda #66
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sta $3000
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lda #67
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sta $3000
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Infinity:
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jmp Infinity ; bwa hahahahaha
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;============================================================================
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; SetupVideo -- Sets up the video mode and tile-related registers
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;----------------------------------------------------------------------------
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; In: None
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;----------------------------------------------------------------------------
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; Out: None
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;----------------------------------------------------------------------------
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SetupVideo:
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php
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lda #$00
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sta $2105 ; Set Video mode 0, 8x8 tiles, 4 color BG1/BG2/BG3/BG4
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;lda #$08 ; Set BG1's Tile Map offset to $0800 (Word address)
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lda #$40 ; Set BG1's Tile Map offset to $2000 (Word address)
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sta $2107 ; And the Tile Map size to 32x32
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stz $210B ; Set BG1's Character VRAM offset to $0000 (word address)
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lda #$01 ; Enable BG1
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sta $212C
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lda #$FF
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sta $210E
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sta $210E
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lda #$0F
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sta $2100 ; Turn on screen, full Brightness
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plp
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rts
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str_COP:
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.db "COP",10,0
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str_ABORT:
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.db "ABORT",10,0
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str_NMI:
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.db "NMI",10,0
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str_RESET:
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.db "RESET",10,0
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str_IRQBRK:
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.db "IRQBRK",10,0
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;============================================================================
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.ENDS
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;============================================================================
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; Character Data
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;============================================================================
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.BANK 0 SLOT 0
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.SECTION "CharacterData02"
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.INCLUDE "optixx.inc"
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.ENDS
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