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xmas2019: add decorations to the tree
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Vince Weaver
parent
6787c7a58c
commit
7e1c7f4697
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@ -6,8 +6,9 @@ PNG_TO_40x48D = ../gr-utils/png_to_40x48d
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all: xmas2019.dsk sine_table
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xmas2019.dsk: SNOW TREE HELLO
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xmas2019.dsk: SNOW TREE XMAS2019 HELLO
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cp empty.dsk xmas2019.dsk
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$(DOS33) -y xmas2019.dsk BSAVE -a 0x1000 XMAS2019
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$(DOS33) -y xmas2019.dsk BSAVE -a 0x1000 SNOW
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$(DOS33) -y xmas2019.dsk BSAVE -a 0x1000 TREE
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$(DOS33) -y xmas2019.dsk SAVE A HELLO
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@ -34,9 +35,21 @@ snow.o: snow.s
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# background_final.inc
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ca65 -o snow.o snow.s -l snow.lst
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####
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background_final.inc: background_final.png
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$(PNG_TO_40x48D) asm background_final.png bg_final > background_final.inc
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XMAS2019: xmas2019.o
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ld65 -o XMAS2019 xmas2019.o -C ../linker_scripts/apple2_1000.inc
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xmas2019.o: xmas2019.s
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#gr_copy.s random16.s fw.s hgr.s delay_a.s \
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# vapor_lock.s gr_hline.s state_machine.s move_letters.s \
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# background_final.inc
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ca65 -o xmas2019.o xmas2019.s -l xmas2019.lst
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#background_final.inc: background_final.png
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# $(PNG_TO_40x48D) asm background_final.png bg_final > background_final.inc
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####
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245
xmas_2019/xmas2019.s
Normal file
245
xmas_2019/xmas2019.s
Normal file
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@ -0,0 +1,245 @@
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; Display awesome tree
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; by deater (Vince Weaver) <vince@deater.net>
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; Zero Page
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CH = $24
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CV = $25
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GBASL = $26
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GBASH = $27
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BASL = $28
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BASH = $29
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HGR_COLOR = $E4
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SNOWX = $F0
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COLOR = $F1
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CMASK1 = $F2
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CMASK2 = $F3
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WHICH_Y = $F4
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TREESIZE = 12
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.include "hardware.inc"
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;==================================
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;==================================
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bit SET_GR
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bit FULLGR
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bit LORES
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bit PAGE0
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display_loop:
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;==========================================================
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;==========================================================
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; erase old lines
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;==========================================================
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;==========================================================
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; clear 10-30 on lines 8-38
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; 4+(80+5)*20+5-1 = 1708 cycles
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clear_lores:
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lda #$0 ; 2
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ldx #19 ; 2
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;===========
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; 4
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clear_lores_loop:
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sta $600+10,X ; 8 ; 5
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sta $680+10,X ; 10 ; 5
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sta $700+10,X ; 12 ; 5
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sta $780+10,X ; 14 ; 5
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sta $428+10,X ; 16 ; 5
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sta $4A8+10,X ; 18 ; 5
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sta $528+10,X ; 20 ; 5
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sta $5A8+10,X ; 22 ; 5
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sta $628+10,X ; 24 ; 5
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sta $6A8+10,X ; 26 ; 5
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sta $728+10,X ; 28 ; 5
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sta $7A8+10,X ; 30 ; 5
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sta $450+10,X ; 32 ; 5
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sta $4D0+10,X ; 34 ; 5
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sta $550+10,X ; 36 ; 5
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sta $5D0+10,X ; 38 ; 5
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;===========
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; 80
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dex ; 2
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bpl clear_lores_loop ; 3
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;===========
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; 5
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; -1
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;============================================================
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;============================================================
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; move line
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;============================================================
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;============================================================
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inc WHICH_Y ; 5
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lda WHICH_Y ; 3
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and #$7f ; 2
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sta WHICH_Y ; 3
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;=====
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; 13
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;==========================================================
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;==========================================================
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; draw new line
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;==========================================================
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;==========================================================
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;NEW: 2,4,6,8,10,12,14,16,18,2,2,2
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;
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; 2-1 + 7*TREESIZE + 85*TREESIZE +
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; 18*(2+4+6+8+10+12+14+16+18+2+2+2)
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;
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; 1 + 84 + 1020 + 18*92 = 1105 + 1656 = 2761
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ldx #0 ; 2
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draw_line_loop:
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;=================================
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;=================================
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; draw line
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;=================================
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;=================================
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; X = which
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; optimized: 34 + 18 + 34 + 18*len + -1 = 85+(18*len)
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draw_line:
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; set up proper sine table
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ldy tree_line,X ; 4+
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lda sine_table_l,Y ; 4+
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sta sine_table_smc+1 ; 4
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lda sine_table_h,Y ; 4+
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sta sine_table_smc+2 ; 4
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ldy WHICH_Y ; 3
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sine_table_smc:
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lda sine_table5,Y ; 4+
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lsr ; 2
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tay ; 2
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bcs draw_line_odd ; 3
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;======
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; 34
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draw_line_even:
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; -1
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lda tree_color,X ; 4+
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and #$0f ; 2
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sta ll_smc1+1 ; 4
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lda #$f0 ; 2
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sta ll_smc2+1 ; 4
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jmp draw_line_actual ; 3
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;====
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; 18
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draw_line_odd:
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lda tree_color,X ; 4+
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and #$f0 ; 2
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sta ll_smc1+1 ; 4
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lda #$0f ; 2
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sta ll_smc2+1 ; 4
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nop ; 2
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;====
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; 18
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draw_line_actual:
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lda gr_offsets_l,Y ; 4+
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clc ; 2
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adc tree_start,X ; 4+
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sta ll_smc3+1 ; 4
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sta ll_smc4+1 ; 4
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lda gr_offsets_h,Y ; 4+
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sta ll_smc3+2 ; 4
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sta ll_smc4+2 ; 4
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ldy tree_len,X ; 4+
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;=====
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; 34
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line_loop:
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ll_smc3:
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lda $400,Y ; 4+
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ll_smc2:
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and #$f0 ; 2
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ll_smc1:
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ora #$0f ; 2
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ll_smc4:
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sta $400,Y ; 5
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dey ; 2
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bpl line_loop ; 3
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;=====
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; 18
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; -1
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inx ; 2
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cpx #TREESIZE ; 2
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bne draw_line_loop ; 3
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; -1
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;==============================================================
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;==============================================================
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; lda #100
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; jsr WAIT
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jmp display_loop ; 3
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tree:
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; color start stop ; 01234567890123456789
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; .byte $DD, 19, 20, $00 ; YY
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; .byte $44, 17, 22, $00 ; DDDD
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; .byte $CC, 16, 23, $00 ; LLLLLL
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; .byte $44, 15, 24, $00 ; DDDDDDDD
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; .byte $CC, 14, 25, $00 ; LLLLLRRLLL
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; .byte $44, 13, 26, $00 ; DDDDDDDDDDDD
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; .byte $CC, 12, 27, $00 ; LLLLLLLLLLLLLL
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; .byte $44, 11, 28, $00 ; DDDDRRDDDDDDDDDD
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; .byte $CC, 10, 29, $00 ; LLLLLLLLLLLLLLLLLL
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; .byte $88, 19, 20, $00 ; BB
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tree_color: .byte $DD,$44,$CC,$44, $CC,$11, $44, $CC, $44,$11, $CC, $88
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tree_line: .byte 0, 1, 2, 3, 4, 4, 5, 6, 7, 7, 8, 9
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tree_start: .byte 19, 18, 17, 16, 15, 20, 14, 13, 12, 16, 11, 19
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tree_len: .byte 2-1,4-1,6-1,8-1,10-1,2-1,12-1,14-1,16-1,2-1,18-1, 2-1
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gr_offsets_l:
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.byte <$400,<$480,<$500,<$580,<$600,<$680,<$700,<$780
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.byte <$428,<$4a8,<$528,<$5a8,<$628,<$6a8,<$728,<$7a8
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.byte <$450,<$4d0,<$550,<$5d0,<$650,<$6d0,<$750,<$7d0
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gr_offsets_h:
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.byte >$400,>$480,>$500,>$580,>$600,>$680,>$700,>$780
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.byte >$428,>$4a8,>$528,>$5a8,>$628,>$6a8,>$728,>$7a8
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.byte >$450,>$4d0,>$550,>$5d0,>$650,>$6d0,>$750,>$7d0
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sine_table_l:
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.byte <sine_table5, <sine_table6, <sine_table7, <sine_table8
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.byte <sine_table9, <sine_table10,<sine_table11,<sine_table12
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.byte <sine_table13,<sine_table14,<sine_table15
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sine_table_h:
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.byte >sine_table5, >sine_table6, >sine_table7, >sine_table8
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.byte >sine_table9, >sine_table10,>sine_table11,>sine_table12
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.byte >sine_table13,>sine_table14,>sine_table15
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.align $100
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.include "sines.inc"
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