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tile-test.s
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tile-test.s
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.list
.include "arg.mac"
.include "common.mac"
.include "tile-test.mac"
;;; items
.inesprg 2
.ineschr 1
.inesmir 2
.inesmap 4
.zp
tile_pos: .ds 1
tile_offset: .ds 1
tile: .ds 2
gx: .ds 1
gy: .ds 1
tiles: .ds 180
tmp: .ds 1
tmp16: .ds 2
tmp16_2: .ds 2
.bss
sprite: .ds 256
otiles: .ds 180
dests: .ds 180
flags: .ds 180
title: .ds 36
author: .ds 20
;;; initialize
.code
.bank 2
.org $C000
start: lda #0
sta $2000
sta $2001
sei
jsr vwait
jsr vwait
;;; draw item
jsr vwait
lda #$3f
sta $2006
lda #$00
sta $2006
sta $2005
sta $2005
;;; palette 0
lda #$0e ; black
sta $2007
lda #$2d ; 50gray
sta $2007
lda #$3d ; 25gray
sta $2007
lda #$38 ; orange
sta $2007
;;; palette 1
lda #$0e
sta $2007
lda #$16 ; red
sta $2007
lda #$3d ; gray
sta $2007
lda #$28 ; yellow
sta $2007
;;; palette 2
lda #$0e ; black
sta $2007
lda #$12 ; blue
sta $2007
lda #$3D ; gray
sta $2007
lda #$17 ; brownish
sta $2007
;;; palette 3
lda #$0e ; black
sta $2007
lda #$19 ; green
sta $2007
lda #$3d ; gray
sta $2007
lda #$12 ; blue
sta $2007
jsr vwait
jsr vwait
jsr vwait
set_tile tile_brick, #0, #0
set_tile tile_red, #1, #0
set_tile tile_blue, #2, #0
set_tile tile_gray, #3, #0
set_tile tile_green, #4, #0
set_tile tile_exit, #5, #0
set_tile tile_hole, #6, #0
set_tile tile_yellow, #7, #0
set_tile tile_laser, #8, #0
set_tile tile_spot, #9, #0
set_tile tile_stop, #10, #0
set_tile tile_right, #11, #0
set_tile tile_left, #12, #0
set_tile tile_up, #13, #0
set_tile tile_down, #14, #0
set_tile tile_rough, #15, #0
set_tile tile_elec, #16, #1
set_tile tile_on, #17, #1
set_tile tile_off, #18, #1
set_tile tile_tele, #19, #1
set_tile tile_break, #20, #1
set_tile tile_lr, #21, #1
set_tile tile_ud, #22, #1
set_tile tile_0, #23, #1
set_tile tile_1, #24, #1
set_tile tile_w1, #25, #1
set_tile tile_w2, #26, #1
set_tile tile_w3, #27, #1
set_tile tile_w4, #28, #1
set_tile tile_w5, #29, #1
set_tile tile_w6, #30, #1
set_tile tile_ws, #31, #1
set_tile tile_wb, #32, #2
set_tile tile_wr, #33, #2
set_tile tile_wg, #34, #2
set_tile tile_blueup, #35, #2
set_tile tile_bluedown, #36, #2
set_tile tile_redup, #37, #2
set_tile tile_reddown, #38, #2
set_tile tile_greenup, #39, #2
set_tile tile_greendown, #40, #2
set_tile tile_blues, #41, #2
set_tile tile_reds, #42, #2
set_tile tile_greens, #43, #2
set_tile tile_grays, #44, #2
set_tile tile_bluehole, #45, #2
set_tile tile_redhole, #46, #2
set_tile tile_greenhole, #47, #2
set_tile tile_blank, #48, #3
ppu_on:
jsr vwait
lda #%00100000
sta $2000
lda #%00011010
sta $2001
ldx #0
end:
jmp end
jsr vwait
lda #0
stx $2005
sta $2005
inx
vwait:
lda $2002
bpl vwait
lda #0
sta $2005
sta $2005
sta $2006
sta $2006
rts
draw_tile:
mov #0, tmp16+1
mov tile_pos, tmp16
asl16 tmp16
add16 tmp16, #$20C0
mov #0, tmp16_2+1
mov tile_offset, tmp16_2
asl16 tmp16_2
asl16 tmp16_2
asl16 tmp16_2
asl16 tmp16_2
asl16 tmp16_2
add16 tmp16, tmp16_2
lda tmp16
asl a
lda tmp16+1
rol a
and #%00000111
asl a
asl a
asl a
sta tmp16_2+1
lda tmp16
and #%00011100
lsr a
lsr a
ora tmp16_2+1
adc #$C0
ldx #$23
stx $2006 ; set address of thing
sta $2006
ldx $2007 ; invalid data
ldx $2007 ; correct data
ldy #$23
sty $2006 ; reset address
sta $2006
lda tmp16 ; find the bit
and #%01000010
bne .test1
lda tile+1
and #%00000011
sta tmp
txa
ora tmp
sta $2007 ; set the color
jmp .update_tile
.test1: cmp #%00000010
bne .test2
lda tile+1
and #%00001100
sta tmp
txa
ora tmp
sta $2007
jmp .update_tile
.test2: cmp #%01000000
bne .test3
lda tile+1
and #%00110000
sta tmp
txa
ora tmp
sta $2007
jmp .update_tile
.test3: lda tile+1
and #%11000000
sta tmp
txa
ora tmp
sta $2007
.update_tile:
lda tmp16+1
sta $2006
lda tmp16
sta $2006
lda tile
sta $2007 ; update the tile
add16 tmp16, #1 ; next part (right)
lda tmp16+1
sta $2006
lda tmp16
sta $2006
inc tile
lda tile
sta $2007 ; update the tile
add16 tmp16, #$20 ; next part (down)
lda tmp16+1
sta $2006
lda tmp16
sta $2006
lda tile
clc
adc #$10
sta tile
sta $2007 ; update the tile
add16 tmp16, #$FFFF ; last part (left)
lda tmp16+1
sta $2006
lda tmp16
sta $2006
dec tile
lda tile
sta $2007 ; update the tile
rts
;;; some data
.data
.bank 2
.org $C800
.include "tile-test.inc"
;;; vectors
.bank 3
.org $FFFA
.dw start,start,start
.bank 4
.incbin "escape.chr"
.incbin "debug.chr"