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snes: opening has right colors
This commit is contained in:
Vince Weaver
parent
2c190bd88c
commit
53609b2226
@ -31,5 +31,5 @@ tools/pcx_to_tiles_8bpp:
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cd tools && make
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clean:
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rm -f *~ *.o *.lst *.sfc *.tiles
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rm -f *~ *.o *.lst *.sfc *.tiles tbfont.inc
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cd tools && make clean
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@ -1,2 +1,2 @@
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.word $eb68 ; Complement of checksum
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.word $1497 ; Unsigned 16-bit sum of ROM
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.word $dd2e ; Complement of checksum
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.word $22d1 ; Unsigned 16-bit sum of ROM
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@ -19,7 +19,7 @@ display_opening:
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;
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; 1111 0000
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lda #$f0 ; BG1 Tilemap starts at VRAM $F000
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lda #$78 ; BG1 Tilemap starts at VRAM $F000
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sta $2107 ; bg1 src
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; we want the BG2 Tilemap to start at VRAM $F800
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@ -27,11 +27,10 @@ display_opening:
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; aaaa aass a is shifted by 10 for address
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; ss = size of screen in tiles 00 = 32x32
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;
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; 1111 0000
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; lda #$f8 ; BG2 Tilemap starts at VRAM $F800
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; sta $2108 ; bg1 src
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; 1111 1000
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lda #$7c ; BG2 Tilemap starts at VRAM $F800
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sta $2108 ; bg2 src
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; aaaa bbbb a= BG2 tiles, b= BG1 tiles
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@ -40,8 +39,7 @@ display_opening:
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; our BG1 tiles are stored starting in VRAM $0000
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; our BG2 tiles are stored starting in VRAM $e000
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; lda #$e0
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lda #$00
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lda #$70
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sta $210b ; bg1 tile data starts at VRAM 0000
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@ -53,7 +51,7 @@ display_opening:
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.i16
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stz $2121 ; CGRAM color-generator read/write address
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ldy #$0200 ; we have 256 colors / 512 bytes
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ldy #$00fe ; we have 127 colors / 512 bytes
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ldx #$0000 ; pointer
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opening_copypal:
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@ -63,6 +61,13 @@ opening_copypal:
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dey
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bne opening_copypal
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; make last color white
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lda #$7f
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sta $2122
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lda #$ff
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sta $2122
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;=====================
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; Load Tile Data
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@ -99,26 +104,26 @@ opening_copy_tile_data:
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; replace with DMA!
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; rep #$20 ; set accumulator/mem to 16bit
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;.a16
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;.i16
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; lda #$7000 ;
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; sta $2116 ; set adddress for VRAM read/write
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; ; multiply by 2, so 0xe000
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;
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; ldy #$0800 ; Copy 128 tiles, which are 32 bytes each
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; ; 8x8 tile with 4bpp (four bits per pixel)
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;;; ; in 2-byte chunks, so
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; ; (128*32)/2 = 2048 = 0x0800
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;
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; ldx #$0000
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rep #$20 ; set accumulator/mem to 16bit
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.a16
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.i16
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lda #$7000 ;
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sta $2116 ; set adddress for VRAM read/write
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; multiply by 2, so 0xe000
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ldy #$0800 ; Copy 128 tiles, which are 32 bytes each
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; 8x8 tile with 4bpp (four bits per pixel)
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; in 2-byte chunks, so
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; (128*32)/2 = 2048 = 0x0800
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ldx #$0000
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opening_copy_font_data:
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; lda f:tb_font, x
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; sta $2118 ; write the data
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; inx ; increment by 2 (16-bits)
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; inx
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; dey ; decrement counter
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; bne opening_copy_font_data
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lda f:tb_font, x
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sta $2118 ; write the data
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inx ; increment by 2 (16-bits)
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inx
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dey ; decrement counter
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bne opening_copy_font_data
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;===================================
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@ -127,11 +132,14 @@ opening_copy_font_data:
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.a16
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.i16
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opening_clear_linear_tilemap:
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; 6 down, 1 right = (6*32)+1 = 97 = 0xc1
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lda #$f0c1 ; we set tilemap to be at VRAM 0xf000 earlier
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; 1111 0000 1100 0001
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lda #$78c1 ; we set tilemap to be at VRAM 0xf000 earlier
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; f0c1
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sta $2116
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ldy #$0001 ; clear counters
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@ -177,45 +185,40 @@ opening_check_end:
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; Write String to Background
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;opening_put_string:
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; lda #$fd08 ; set VRAM address
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opening_put_string:
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; 1111 1101 0000 1000
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lda #$7e44 ; set VRAM address
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; f800 = upper left
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; want 4x20, so (20 * 64) + 4*2 = 1288 = 0x508
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; fd08
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; sta $2116 ; set VRAM r/w address
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sta $2116 ; set VRAM r/w address
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; ldy #$000d ; length of string
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ldx #$0000 ; string index
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; ldx #$0000 ; string index
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; lda #$0200 ; clear A
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; vhop ppcc cccc cccc
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lda #$1c00 ; clear A
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opening_copy_string:
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; sep #$20 ; set accumulator to 8 bit
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sep #$20 ; set accumulator to 8 bit
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; as we only want to do an 8-bit load
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.a8
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; lda opening_string, x ; load string character
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lda opening_string, x ; load string character
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; while leaving top 8-bits alone
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; beq opening_done_copy_string
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beq opening_done_copy_string
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; sec
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; sbc #$20
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; rep #$20 ; set accumulator back to 16 bit
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rep #$20 ; set accumulator back to 16 bit
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.a16
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; sta $2118 ; store to VRAM
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sta $2118 ; store to VRAM
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; the bottom 8 bits is the tile to use
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; the top 8 bits is vhopppcc
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; vert flip, horiz flip o=priority
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; p = palette, c=top bits of tile#
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; inx ; increment string pointer
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inx ; increment string pointer
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; bra opening_copy_string
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bra opening_copy_string
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opening_done_copy_string:
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@ -239,7 +242,7 @@ opening_setup_video:
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; a = object, b=BG4 c=BG3 d=BG2 e=BG1
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; lda #%00010001 ; Enable BG1
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; lda #%00000011 ; Enable BG1
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lda #%00000001 ; Enable BG1
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lda #%00000011 ; Enable BG1 & BG2
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sta $212c
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@ -278,7 +281,7 @@ opening_string:
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.segment "HIGHROM"
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tb_font:
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;.include "tbfont.inc"
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.include "tbfont.inc"
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.include "tb1_opening.tiles"
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