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xmas2018: scrolling text works
This commit is contained in:
Vince Weaver
parent
4de3183240
commit
f70de4c203
137
mode7/scroller.c
137
mode7/scroller.c
@ -71,25 +71,83 @@ static unsigned char font[256][9]={
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},
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{0,0,0,0,0,0,0,0,0},
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{0,0,0,0,0,0,0,0,0}, // 48
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{4, // 48
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0x00,
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0x40, // **
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0xa0, // ** **
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0xa0, // ** **
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0xa0, // ** **
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0xa0, // ** **
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0xa0, // ** **
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0x40, // **
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},
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{4,
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0x00,
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0x40, // **
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0xc0, // ****
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0x40, // **
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0x40, // **
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0x40, // **
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0x40, // **
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0xe0, // ******
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},
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{4,
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0x00,
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0x40, // **
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0xa0, // ** **
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0x20, // **
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0x40, // **
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0x40, // **
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0x80, // **
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0xe0, // ******
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},
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/*
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** ** ** **** ** ** ****** **** ****** ** ****
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** ** **** ** ** ** ** ** ** ** ** ** ** ** **
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** ** ** ** ** ** ** ** ** ** ** ** ** **
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** ** ** ** ** ****** **** **** ** ** ****
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** ** ** ** ** ** ** ** ** ** ** ** **
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** ** ** ** ** ** ** ** ** ** ** ** **
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** ****** ****** **** ** **** ** ** ** **
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**** ** ** ****** **** ******
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** ** ** ** ** **
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** ** ** ** ** **
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** ****** **** **** **
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** ** ** ** ** **
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** ** ** ** ** **
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**** ** **** ** **
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*/
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{0,0,0,0,0,0,0,0,0},
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{0,0,0,0,0,0,0,0,0},
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{0,0,0,0,0,0,0,0,0},
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{0,0,0,0,0,0,0,0,0},
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{0,0,0,0,0,0,0,0,0},
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{0,0,0,0,0,0,0,0,0},
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{0,0,0,0,0,0,0,0,0},
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{0,0,0,0,0,0,0,0,0}, // 56
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{0,0,0,0,0,0,0,0,0},
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{4,
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0x00,
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0x00,
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0x00,
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0x00,
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0x00,
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0x00,
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0x00,
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0x00,
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},
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{4,0,0,0,0,0,0,0,0},
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{4,0,0,0,0,0,0,0,0},
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{4,0,0,0,0,0,0,0,0},
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{4,0,0,0,0,0,0,0,0},
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{4, // 56
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0x00,
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0x40, // **
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0xa0, // ** **
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0xa0, // ** **
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0x40, // **
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0xa0, // ** **
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0xa0, // ** **
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0x40, // **
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},
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{4,
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0x00,
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0x60, // ****
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0xc0, // ** **
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0xc0, // ** **
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0x60, // ****
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0x20, // **
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0x20, // **
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0x20, // **
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},
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{0,0,0,0,0,0,0,0,0},
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{0,0,0,0,0,0,0,0,0},
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{0,0,0,0,0,0,0,0,0},
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@ -460,13 +518,28 @@ static int rainbow_logo[4][6]={
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{0x02,0x62,0x62,0x62,0x02,0x00 },
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};
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static int xmas_tree[4][5]={
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{0x00,0x00,0x4d,0x00,0x00 },
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{0x00,0x44,0xd4,0x4d,0x00 },
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{0x40,0x4d,0x44,0x44,0x40 },
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{0x00,0x10,0x18,0x10,0x00 },
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};
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static int holly[4][9]={
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{0x00,0x00,0x00,0x10,0x11,0x10,0x00,0x00,0x00 },
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{0x00,0xc0,0x4c,0xc1,0x11,0xc1,0x4c,0xc0,0x00 },
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{0xc0,0x4c,0xc4,0xcc,0x00,0xcc,0xc4,0x4c,0xc0 },
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{0xcc,0xc4,0x0c,0x00,0x00,0x00,0x0c,0xc4,0xcc },
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};
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int main(int argc, char **argv) {
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//char string[]="ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
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// char string[]=" \001DEATER \002WAS \003HERE!!! ";
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// char string[]=" \001BY DEATER... \002A \010 PRODUCTION ";
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char string[]=" \003\011APPLE ][ FOREVER\011 ";
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// char string[]=" \003\011APPLE ][ FOREVER\011 ";
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char string[]=" \012 \001MERRY XMAS 2018 \003FROM DEATER \013 ";
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int length=0,width=0,x,y,i,j;
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int color,color1,color2;
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int which_color=0;
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@ -508,6 +581,34 @@ int main(int argc, char **argv) {
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continue;
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}
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/* christmas tree */
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if (string[i]==10) {
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width=5;
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for(x=0;x<width;x++) {
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for(j=0;j<4;j++) {
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row[j][length]=xmas_tree[j][x];
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}
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length++;
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}
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continue;
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}
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/* holly */
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if (string[i]==11) {
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width=9;
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for(x=0;x<width;x++) {
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for(j=0;j<4;j++) {
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row[j][length]=holly[j][x];
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}
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length++;
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}
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continue;
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}
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width=font[(int)string[i]][0];
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for(x=0;x<width;x++) {
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for(j=0;j<4;j++) {
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@ -27,7 +27,7 @@ xmas2018.o: xmas2018.s \
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vapor_lock.s delay_a.s wait_keypress.s \
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play_music.s mockingboard.s rts.s \
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wreath.s wreath.img.lz4 sprites.inc \
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ball.s ball.img.lz4 \
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ball.s ball.img.lz4 greets.inc gr_scroll.s \
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merry.s merry.img.lz4
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ca65 -o xmas2018.o xmas2018.s -l xmas2018.lst
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@ -20,24 +20,24 @@ ball:
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sta FRAMEH
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;=============================
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; Load graphic hgr
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; ball graphic already loaded to $4000 (HGR page1)
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; lda #<ball_hgr
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; sta LZ4_SRC
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; lda #>ball_hgr
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; sta LZ4_SRC+1
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;=============================
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; set up scrolling
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; lda #<(ball_hgr_end-8) ; skip checksum at end
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; sta LZ4_END
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; lda #>(ball_hgr_end-8) ; skip checksum at end
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; sta LZ4_END+1
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lda #0
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sta OFFSET
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; lda #<$2000
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; sta LZ4_DST
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; lda #>$2000
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; sta LZ4_DST+1
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;=============================
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; decompress scroll image to $800
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lda #>a2_scroll
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sta INH
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lda #<a2_scroll
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sta INL
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jsr decompress_scroll
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; jsr lz4_decode
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;==============================
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; setup graphics for vapor lock
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@ -137,24 +137,29 @@ baloopF:dex ; 2
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;======================================================
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; do_nothing should be 4550
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; -1023 music
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; -1841 scroll
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; -10 keypress
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; ===========
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; 4540
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; 1676
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; jsr play_music ; 6+1032
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jsr play_music ; 6+1017
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jsr scroll_loop ; 6+1835
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; Try X=9 Y=89 cycles=4540
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; Try X=1 Y=152 cycles=1673 R3
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ldy #89 ; 2
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baloop1:ldx #9 ; 2
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lda $0 ; nop
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ldy #152 ; 2
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baloop1:ldx #1 ; 2
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baloop2:dex ; 2
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bne baloop2 ; 2nt/3
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dey ; 2
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bne baloop1 ; 2nt/3
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; no keypress = 10+(24) = 34
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; keypress = 10
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lda KEYPRESS ; 4
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bpl ba_no_keypress ; 3
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@ -168,3 +173,5 @@ ba_handle_keypress:
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rts ; 6
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.include "gr_scroll.s"
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.include "greets.inc"
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145
xmas_2018/gr_scroll.s
Normal file
145
xmas_2018/gr_scroll.s
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@ -0,0 +1,145 @@
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scroll_row1 = $800
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scroll_row2 = $900
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scroll_row3 = $A00
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scroll_row4 = $B00
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SCROLL_LENGTH = $61
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;OFFSET = $62
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; 5 + (45*40) +4 + 13 + 7 + 6 = 1835
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scroll_loop:
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ldx #0 ; 2
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ldy OFFSET ; 3
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draw_loop:
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lda scroll_row1,Y ; 4
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sta $650,X ; 5
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lda scroll_row2,Y ; 4
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sta $6d0,X ; 5
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lda scroll_row3,Y ; 4
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sta $750,X ; 5
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lda scroll_row4,Y ; 4
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sta $7d0,X ; 5
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iny ; 2
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inx ; 2
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cpx #40 ; 2
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bne draw_loop ; 2nt/3
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;===============
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; 45
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; -1
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inc OFFSET ; 5
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;============
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; 4
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;==================
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; wrap scrolltext
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;==================
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clc ; 2
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lda OFFSET ; 3
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adc #40 ; 2
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cmp SCROLL_LENGTH ; 3
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bne no_wrap ; 3
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;============
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; 13
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; -1
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lda #0 ; 2
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sta OFFSET ; 3
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jmp done_wrap ; 3
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no_wrap:
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lda $0 ; 3
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nop ; 2
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nop ; 2
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;===========
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; 7
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done_wrap:
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rts ; 6
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;=======================
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; decompress scroll
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;=======================
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decompress_scroll:
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ldy #0
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jsr scroll_load_and_increment
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sta SCROLL_LENGTH
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lda #<scroll_row1
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sta OUTL
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lda #>scroll_row1
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sta OUTH
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decompress_scroll_loop:
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jsr scroll_load_and_increment ; load compressed value
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cmp #$A1 ; EOF marker
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beq done_decompress_scroll ; if EOF, exit
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pha ; save
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and #$f0 ; mask
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cmp #$a0 ; see if special AX
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beq decompress_scroll_special
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pla ; note, PLA sets flags!
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ldx #$1 ; only want to print 1
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bne decompress_scroll_run
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decompress_scroll_special:
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pla
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and #$0f ; check if was A0
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bne decompress_scroll_color ; if A0 need to read run, color
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decompress_scroll_large:
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jsr scroll_load_and_increment ; get run length
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decompress_scroll_color:
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tax ; put runlen into X
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jsr scroll_load_and_increment ; get color
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decompress_scroll_run:
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sta (OUTL),Y
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pha
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clc ; increment 16-bit pointer
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lda OUTL
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adc #$1
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sta OUTL
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lda OUTH
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adc #$0
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sta OUTH
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pla
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dex ; repeat for X times
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bne decompress_scroll_run
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beq decompress_scroll_loop ; get next run
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done_decompress_scroll:
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rts
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scroll_load_and_increment:
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lda (INL),Y ; load and increment 16-bit pointer
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pha
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clc
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lda INL
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adc #$1
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sta INL
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lda INH
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adc #$0
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sta INH
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pla
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rts
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10
xmas_2018/greets.inc
Normal file
10
xmas_2018/greets.inc
Normal file
@ -0,0 +1,10 @@
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; Original size = 948 bytes
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a2_scroll:
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; scroll_length:
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.byte 237
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.byte $A0,$2E,$00,$4D,$A6,$00,$20,$A3,$00,$20,$00,$A4,$20,$00,$A3,$20,$00,$00,$A3,$20,$00,$00,$20,$00,$20,$A5,$00,$20,$00,$20,$00,$20,$A3,$00,$20,$00,$00,$20,$20,$A3,$00,$A3,$20,$A6,$00,$20,$A3,$00,$20,$A3,$00,$20,$A3,$00,$20,$A6,$00,$A4,$10,$00,$A3,$10,$A3,$00,$10,$10,$00,$00,$10,$A3,$00,$10,$A5,$00,$10,$10,$A3,$00,$A4,$10,$00,$00,$10,$10,$00,$00,$A3,$10,$00,$A4,$10,$00,$A3,$10,$A9,$00,$10,$11,$10,$A0,$42,$00
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.byte $A0,$2D,$00,$44,$D4,$4D,$A5,$00,$E6,$06,$E0,$06,$E6,$00,$E6,$A4,$00,$E6,$00,$00,$E6,$00,$E6,$00,$00,$E6,$00,$E6,$00,$E6,$A5,$00,$E6,$00,$E6,$00,$E6,$06,$E0,$06,$E6,$00,$E6,$00,$00,$E6,$00,$E6,$A8,$00,$06,$00,$E6,$00,$E6,$00,$E6,$00,$06,$E6,$00,$00,$E6,$00,$E6,$A5,$00,$B3,$A4,$00,$B3,$00,$00,$B3,$00,$B3,$00,$00,$B3,$00,$B3,$03,$B0,$03,$B3,$A5,$00,$B3,$00,$03,$B0,$00,$B3,$A4,$00,$B3,$00,$00,$B3,$00,$00,$B3,$00,$00,$B3,$A4,$00,$B3,$00,$00,$B3,$A6,$00,$C0,$4C,$C1,$11,$C1,$4C,$C0,$A0,$40,$00
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.byte $A0,$2C,$00,$40,$4D,$44,$44,$40,$A4,$00,$EF,$A3,$00,$EF,$00,$EF,$0F,$0F,$00,$00,$EF,$0F,$0F,$E0,$00,$EF,$0F,$0F,$E0,$00,$00,$EF,$A6,$00,$E0,$0F,$E0,$00,$EF,$A3,$00,$EF,$00,$EF,$0F,$0F,$EF,$00,$00,$0F,$0F,$E0,$A6,$00,$EF,$00,$00,$EF,$00,$EF,$00,$00,$EF,$00,$00,$E0,$0F,$E0,$A5,$00,$BF,$0F,$0F,$00,$00,$BF,$0F,$0F,$B0,$00,$BF,$00,$00,$BF,$00,$BF,$A3,$00,$BF,$A5,$00,$BF,$00,$00,$BF,$00,$BF,$0F,$0F,$00,$00,$BF,$0F,$0F,$BF,$00,$00,$BF,$00,$00,$BF,$0F,$0F,$00,$00,$BF,$0F,$0F,$B0,$A5,$00,$C0,$4C,$C4,$CC,$00,$CC,$C4,$4C,$C0,$A0,$3F,$00
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.byte $A0,$2D,$00,$10,$18,$10,$A5,$00,$26,$A3,$00,$26,$00,$26,$A3,$20,$00,$26,$00,$00,$26,$00,$26,$00,$00,$26,$00,$00,$26,$A6,$00,$26,$00,$26,$00,$26,$A3,$00,$26,$00,$26,$00,$00,$26,$00,$A3,$20,$06,$A5,$00,$26,$20,$20,$00,$06,$20,$06,$00,$20,$26,$20,$00,$06,$20,$06,$A5,$00,$13,$A4,$00,$13,$00,$00,$13,$00,$03,$10,$10,$03,$00,$13,$A3,$00,$13,$A5,$00,$13,$10,$03,$00,$00,$13,$A3,$10,$00,$13,$00,$00,$13,$00,$00,$13,$00,$00,$13,$A3,$10,$00,$13,$00,$00,$13,$A5,$00,$CC,$C4,$0C,$A3,$00,$0C,$C4,$CC,$A0,$3F,$00
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.byte $A1
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; Compressed size = 484 bytes
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