mirror of
https://github.com/deater/dos33fsprogs.git
synced 2024-12-25 05:29:34 +00:00
gr: work on splitting things up
This commit is contained in:
Vince Weaver
parent
b8709eaa50
commit
0d8e4d7d6c
@ -1,23 +1,9 @@
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include ../../Makefile.inc
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all:
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cd mode7 && make
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cd rotate && make
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DOS33 = ../../utils/dos33fs-utils/dos33
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TOKENIZE = ../../utils/asoft_basic-utils/tokenize_asoft
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clean:
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cd mode7 && make clean
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cd rotate && make clean
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rm -f *~
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all: gr.dsk
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gr.dsk: SNOW
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cp empty.dsk gr.dsk
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$(DOS33) -y gr.dsk BSAVE -a 0x0300 SNOW
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###
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SNOW: snow.o
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ld65 -o SNOW snow.o -C ../../linker_scripts/apple2_300.inc
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snow.o: snow.s
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ca65 -o snow.o snow.s -l snow.lst
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###
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clean:
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rm -f *~ *.o *.lst SNOW
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@ -1,15 +1,15 @@
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include ../../Makefile.inc
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include ../../../Makefile.inc
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DOS33 = ../../utils/dos33fs-utils/dos33
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PNG2GR = ../../utils/gr-utils/png2gr
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PNG2RLE = ../../utils/gr-utils/png2rle
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TOKENIZE = ../../utils/asoft_basic-utils/tokenize_asoft
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DOS33 = ../../../utils/dos33fs-utils/dos33
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PNG2GR = ../../../utils/gr-utils/png2gr
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PNG2RLE = ../../../utils/gr-utils/png2rle
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TOKENIZE = ../../../utils/asoft_basic-utils/tokenize_asoft
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all: mode7.dsk scroller background
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$(DOS33):
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cd ../../utils/dos33fs-utils && make
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cd ../../../utils/dos33fs-utils && make
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mode7.dsk: $(DOS33) MODE7_ISLAND MODE7_CHECKERBOARD MODE7_RAINBOW \
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PLOT_TEST RASTERBARS SCROLL_DEMO SKY_DEMO \
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@ -34,14 +34,14 @@ MODE7_ISLAND: mode7_island.o
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mode7_island.o: mode7.s island_lookup.s island_map.inc \
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zp.inc sprites.inc \
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../../asm_routines/gr_hlin.s \
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../../asm_routines/multiply_fast.s \
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../../asm_routines/gr_fast_clear.s \
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../../asm_routines/pageflip.s \
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../../asm_routines/gr_setpage.s \
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../../asm_routines/keypress.s \
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../../asm_routines/gr_putsprite.s \
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../../asm_routines/text_print.s
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gr_hlin.s \
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multiply_fast.s \
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gr_fast_clear.s \
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pageflip.s \
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gr_setpage.s \
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keypress.s \
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gr_putsprite.s \
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text_print.s
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ca65 -o mode7_island.o mode7.s -D ISLAND_MAP=1 -l mode7.lst
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MODE7_CHECKERBOARD: mode7_checkerboard.o
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@ -49,16 +49,16 @@ MODE7_CHECKERBOARD: mode7_checkerboard.o
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mode7_checkerboard.o: mode7.s checkerboard_lookup.s \
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zp.inc sprites.inc \
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../../asm_routines/gr_hlin.s \
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../../asm_routines/multiply_fast.s \
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../../asm_routines/gr_fast_clear.s \
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../../asm_routines/pageflip.s \
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../../asm_routines/gr_setpage.s \
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../../asm_routines/keypress.s \
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../../asm_routines/gr_putsprite.s \
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../../asm_routines/text_print.s \
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../../asm_routines/gr_scroll.s \
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../../asm_routines/bg_scroll.s
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gr_hlin.s \
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multiply_fast.s \
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gr_fast_clear.s \
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pageflip.s \
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gr_setpage.s \
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keypress.s \
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gr_putsprite.s \
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text_print.s \
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gr_scroll.s \
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bg_scroll.s
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ca65 -o mode7_checkerboard.o mode7.s -D CHECKERBOARD_MAP=1 -l mode7.lst
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MODE7_RAINBOW: mode7_rainbow.o
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@ -66,21 +66,21 @@ MODE7_RAINBOW: mode7_rainbow.o
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mode7_rainbow.o: mode7.s rainbow_lookup.s \
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zp.inc sprites.inc \
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../../asm_routines/multiply_fast.s \
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../../asm_routines/gr_fast_clear.s \
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../../asm_routines/gr_hlin.s \
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../../asm_routines/pageflip.s \
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../../asm_routines/gr_setpage.s \
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../../asm_routines/keypress.s \
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../../asm_routines/gr_putsprite.s \
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../../asm_routines/text_print.s
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multiply_fast.s \
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gr_fast_clear.s \
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gr_hlin.s \
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pageflip.s \
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gr_setpage.s \
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keypress.s \
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gr_putsprite.s \
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text_print.s
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ca65 -o mode7_rainbow.o mode7.s -D RAINBOW_MAP=1 -l mode7.lst
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PLOT_TEST: plot_test.o
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ld65 -o PLOT_TEST plot_test.o -C ./apple2_1000.inc
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plot_test.o: plot_test.s \
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../../asm_routines/gr_setpage.s
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gr_setpage.s
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ca65 -o plot_test.o plot_test.s -l plot_test.lst
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SCROLL_DEMO: scroll_demo.o
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@ -88,11 +88,11 @@ SCROLL_DEMO: scroll_demo.o
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scroll_demo.o: scroll_demo.s \
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deater_scroll.inc \
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../../asm_routines/gr_hlin.s \
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../../asm_routines/gr_fast_clear.s \
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../../asm_routines/gr_scroll.s \
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../../asm_routines/pageflip.s \
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../../asm_routines/gr_setpage.s
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gr_hlin.s \
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gr_fast_clear.s \
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gr_scroll.s \
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pageflip.s \
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gr_setpage.s
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ca65 -o scroll_demo.o scroll_demo.s -l scroll_demo.lst
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SKY_DEMO: sky_demo.o
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@ -100,21 +100,21 @@ SKY_DEMO: sky_demo.o
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sky_demo.o: sky_demo.s \
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starry_sky.scroll \
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../../asm_routines/gr_hlin.s \
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../../asm_routines/gr_fast_clear.s \
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../../asm_routines/gr_scroll.s \
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../../asm_routines/pageflip.s \
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../../asm_routines/gr_setpage.s
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gr_hlin.s \
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gr_fast_clear.s \
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gr_scroll.s \
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pageflip.s \
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gr_setpage.s
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ca65 -o sky_demo.o sky_demo.s -l sky_demo.lst
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STARFIELD_DEMO: starfield_demo.o
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ld65 -o STARFIELD_DEMO starfield_demo.o -C ./apple2_1000.inc
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starfield_demo.o: starfield_demo.s \
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../../asm_routines/gr_scroll.s \
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../../asm_routines/pageflip.s \
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../../asm_routines/gr_setpage.s \
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../../asm_routines/gr_fast_clear.s
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gr_scroll.s \
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pageflip.s \
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gr_setpage.s \
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gr_fast_clear.s
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ca65 -o starfield_demo.o starfield_demo.s -l starfield_demo.lst
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@ -122,10 +122,10 @@ RASTERBARS: rasterbars.o
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ld65 -o RASTERBARS rasterbars.o -C ./apple2_1000.inc
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rasterbars.o: rasterbars.s \
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../../asm_routines/gr_scroll.s \
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../../asm_routines/pageflip.s \
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../../asm_routines/gr_setpage.s \
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../../asm_routines/gr_fast_clear.s
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gr_scroll.s \
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pageflip.s \
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gr_setpage.s \
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gr_fast_clear.s
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ca65 -o rasterbars.o rasterbars.s -l rasterbars.lst
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@ -133,10 +133,10 @@ STARFIELD_1K: starfield_1k.o
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ld65 -o STARFIELD_1K starfield_1k.o -C ./apple2_1000.inc
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starfield_1k.o: starfield_1k.s \
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../../asm_routines/gr_scroll.s \
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../../asm_routines/pageflip.s \
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../../asm_routines/gr_setpage.s \
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../../asm_routines/gr_fast_clear.s
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gr_scroll.s \
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pageflip.s \
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gr_setpage.s \
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gr_fast_clear.s
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ca65 -o starfield_1k.o starfield_1k.s -l starfield_1k.lst
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@ -144,10 +144,10 @@ TEXT_DEMO: text_demo.o
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ld65 -o TEXT_DEMO text_demo.o -C ./apple2_1000.inc
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text_demo.o: text_demo.s \
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../../asm_routines/gr_scroll.s \
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../../asm_routines/pageflip.s \
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../../asm_routines/gr_setpage.s \
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../../asm_routines/gr_fast_clear.s
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gr_scroll.s \
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pageflip.s \
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gr_setpage.s \
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gr_fast_clear.s
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ca65 -o text_demo.o text_demo.s -l text_demo.lst
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scroller: scroller.o
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79
graphics/gr/mode7/bg_scroll.s
Normal file
79
graphics/gr/mode7/bg_scroll.s
Normal file
@ -0,0 +1,79 @@
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;==================
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; scroll background
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;==================
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; background already loaded
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; ANGLE 0-15 sets angle
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; CV is Y position to display at
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; 182/220... 220/16 = 13.75
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; 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
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; 0 11 22 34 45 56 68 79 91 102 113 125 136 147 159 170 182
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scroll_offsets:
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.byte 0,11,22,34,45,56,68,79,91,102,113,125,136,147,159,170
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scroll_background:
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ldy ANGLE ; use angle
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lda scroll_offsets,Y ; lookup in table
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sta OFFSET ; calculate offset
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ldx #0
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ldy CV ; lookup Y co-ord
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lsr ; and set up self-modify code
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lda gr_offsets,Y ; get position
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sta bgsm1+1
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lda gr_offsets+2,Y ; get position
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sta bgsm2+1
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lda gr_offsets+4,Y ; get position
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sta bgsm3+1
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lda gr_offsets+6,Y ; get position
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sta bgsm4+1
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iny
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clc
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lda gr_offsets,Y ; get position
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adc DRAW_PAGE
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sta bgsm1+2
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lda gr_offsets+2,Y ; get position
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adc DRAW_PAGE
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sta bgsm2+2
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lda gr_offsets+4,Y ; get position
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adc DRAW_PAGE
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sta bgsm3+2
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lda gr_offsets+6,Y ; get position
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adc DRAW_PAGE
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sta bgsm4+2
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ldy OFFSET
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bgdraw_loop:
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lda scroll_row1,Y
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bgsm1:
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sta $400,X
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lda scroll_row2,Y
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bgsm2:
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sta $480,X
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lda scroll_row3,Y
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bgsm3:
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sta $500,X
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lda scroll_row4,Y
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bgsm4:
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sta $580,X
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iny
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inx
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cpx #40
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bne bgdraw_loop
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rts
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193
graphics/gr/mode7/gr_fast_clear.s
Normal file
193
graphics/gr/mode7/gr_fast_clear.s
Normal file
@ -0,0 +1,193 @@
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clear_screens:
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;===================================
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; Clear top/bottom of page 0
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;===================================
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lda #$0
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sta DRAW_PAGE
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jsr clear_top
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jsr clear_bottom
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;===================================
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; Clear top/bottom of page 1
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;===================================
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lda #$4
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sta DRAW_PAGE
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jsr clear_top
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jsr clear_bottom
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rts
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clear_bottoms:
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;===================================
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; Clear bottom of page 0
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;===================================
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lda #$0
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sta DRAW_PAGE
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jsr clear_bottom
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;===================================
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; Clear bottom of page 1
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;===================================
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lda #$4
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sta DRAW_PAGE
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jsr clear_bottom
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rts
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;=========================================================
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; clear_top
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;=========================================================
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; clear DRAW_PAGE
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; original = 14,558 cycles(?) 15ms, 70Hz
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; OPTIMIZED MAX (page0,48rows): 45*120+4+6 = 5410 = 5.4ms 185Hz
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; (pageX,40rows): 50*120+4+6 = 6010 = 6.0ms 166Hz
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; 50*120+4+6+37 = 6055 = 6.0ms 166Hz
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clear_top:
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lda #0 ; 2
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clear_top_a:
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sta COLOR ; 3
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clc ; 2
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lda DRAW_PAGE ; 3
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adc #4 ; 2
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sta __ctf+2 ; 3
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sta __ctf+5 ; 3
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adc #1 ; 2
|
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sta __ctf+8 ; 3
|
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sta __ctf+11 ; 3
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adc #1 ; 2
|
||||
sta __ctf2+2 ; 3
|
||||
sta __ctf2+5 ; 3
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||||
adc #1 ; 2
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sta __ctf2+8 ; 3
|
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sta __ctf2+11 ; 3
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ldy #120 ; 2
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lda COLOR ; 3
|
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clear_top_fast_loop:
|
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__ctf:
|
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sta $400,Y ; 5
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sta $480,Y ; 5
|
||||
sta $500,Y ; 5
|
||||
sta $580,Y ; 5
|
||||
|
||||
cpy #80 ; 2
|
||||
bpl no_draw_bottom ; 2nt/3
|
||||
__ctf2:
|
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sta $600,Y ; 5
|
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sta $680,Y ; 5
|
||||
sta $700,Y ; 5
|
||||
sta $780,Y ; 5
|
||||
no_draw_bottom:
|
||||
|
||||
dey ; 2
|
||||
bpl clear_top_fast_loop ; 2nt/3
|
||||
|
||||
rts ; 6
|
||||
|
||||
|
||||
|
||||
|
||||
;=========================================================
|
||||
; clear_bottom
|
||||
;=========================================================
|
||||
; clear bottom of draw page
|
||||
|
||||
clear_bottom:
|
||||
clc ; 2
|
||||
lda DRAW_PAGE ; 3
|
||||
|
||||
adc #6 ; 2
|
||||
sta __cbf2+2 ; 3
|
||||
sta __cbf2+5 ; 3
|
||||
adc #1 ; 2
|
||||
sta __cbf2+8 ; 3
|
||||
sta __cbf2+11 ; 3
|
||||
|
||||
|
||||
ldy #120 ; 2
|
||||
lda #$a0 ; Normal Space ; 2
|
||||
clear_bottom_fast_loop:
|
||||
__cbf2:
|
||||
sta $600,Y ; 5
|
||||
sta $680,Y ; 5
|
||||
sta $700,Y ; 5
|
||||
sta $780,Y ; 5
|
||||
|
||||
dey ; 2
|
||||
cpy #80 ; 2
|
||||
bpl clear_bottom_fast_loop ; 2nt/3
|
||||
|
||||
rts ; 6
|
||||
|
||||
|
||||
clear_screens_notext:
|
||||
;===================================
|
||||
; Clear top/bottom of page 0
|
||||
;===================================
|
||||
|
||||
lda #$0
|
||||
sta DRAW_PAGE
|
||||
jsr clear_all
|
||||
|
||||
;===================================
|
||||
; Clear top/bottom of page 1
|
||||
;===================================
|
||||
|
||||
lda #$4
|
||||
sta DRAW_PAGE
|
||||
jsr clear_all
|
||||
|
||||
rts
|
||||
|
||||
|
||||
;=========================================================
|
||||
; clear_all
|
||||
;=========================================================
|
||||
; clear 48 rows
|
||||
; clear color: clear_all_color+1
|
||||
|
||||
clear_all:
|
||||
clc ; 2
|
||||
lda DRAW_PAGE ; 3
|
||||
|
||||
adc #4 ; 2
|
||||
sta __caf+2 ; 3
|
||||
sta __caf+5 ; 3
|
||||
adc #1 ; 2
|
||||
sta __caf+8 ; 3
|
||||
sta __caf+11 ; 3
|
||||
adc #1 ; 2
|
||||
sta __caf2+2 ; 3
|
||||
sta __caf2+5 ; 3
|
||||
adc #1 ; 2
|
||||
sta __caf2+8 ; 3
|
||||
sta __caf2+11 ; 3
|
||||
|
||||
|
||||
ldy #120 ; 2
|
||||
clear_all_color:
|
||||
lda #0 ; 2
|
||||
clear_all_fast_loop:
|
||||
__caf:
|
||||
sta $400,Y ; 5
|
||||
sta $480,Y ; 5
|
||||
sta $500,Y ; 5
|
||||
sta $580,Y ; 5
|
||||
__caf2:
|
||||
sta $600,Y ; 5
|
||||
sta $680,Y ; 5
|
||||
sta $700,Y ; 5
|
||||
sta $780,Y ; 5
|
||||
|
||||
dey ; 2
|
||||
bpl clear_all_fast_loop ; 2nt/3
|
||||
|
||||
rts ; 6
|
||||
124
graphics/gr/mode7/gr_hlin.s
Normal file
124
graphics/gr/mode7/gr_hlin.s
Normal file
@ -0,0 +1,124 @@
|
||||
;=====================================================================
|
||||
;= ROUTINES
|
||||
;=====================================================================
|
||||
|
||||
;================================
|
||||
; hlin_setup
|
||||
;================================
|
||||
; put address in GBASL/GBASH
|
||||
; Ycoord in A, Xcoord in Y
|
||||
hlin_setup:
|
||||
sty TEMPY ; 3
|
||||
tay ; y=A ; 2
|
||||
lda gr_offsets,Y ; lookup low-res memory address ; 4
|
||||
clc ; 2
|
||||
adc TEMPY ; 3
|
||||
sta GBASL ; 3
|
||||
iny ; 2
|
||||
|
||||
lda gr_offsets,Y ; 4
|
||||
adc DRAW_PAGE ; add in draw page offset ; 3
|
||||
sta GBASH ; 3
|
||||
rts ; 6
|
||||
;===========
|
||||
; 35
|
||||
;================================
|
||||
; hlin_double:
|
||||
;================================
|
||||
; HLIN Y, V2 AT A
|
||||
; Y, X, A trashed
|
||||
; start at Y, draw up to and including X
|
||||
hlin_double:
|
||||
;int hlin_double(int page, int x1, int x2, int at) {
|
||||
|
||||
jsr hlin_setup ; 41
|
||||
|
||||
sec ; 2
|
||||
lda V2 ; 3
|
||||
sbc TEMPY ; 3
|
||||
|
||||
tax ; 2
|
||||
inx ; 2
|
||||
;===========
|
||||
; 53
|
||||
; fallthrough
|
||||
|
||||
;=================================
|
||||
; hlin_double_continue: width
|
||||
;=================================
|
||||
; GBASL has correct offset for row/col
|
||||
; width in X
|
||||
|
||||
hlin_double_continue:
|
||||
|
||||
ldy #0 ; 2
|
||||
lda COLOR ; 3
|
||||
hlin_double_loop:
|
||||
sta (GBASL),Y ; 6
|
||||
inc GBASL ; 5
|
||||
dex ; 2
|
||||
bne hlin_double_loop ; 2nt/3
|
||||
|
||||
rts ; 6
|
||||
;=============
|
||||
; 53+5+X*16+5
|
||||
|
||||
;================================
|
||||
; hlin_single:
|
||||
;================================
|
||||
; HLIN Y, V2 AT A
|
||||
; Y, X, A trashed
|
||||
hlin_single:
|
||||
|
||||
jsr hlin_setup
|
||||
|
||||
sec
|
||||
lda V2
|
||||
sbc TEMPY
|
||||
|
||||
tax
|
||||
|
||||
; fallthrough
|
||||
|
||||
;=================================
|
||||
; hlin_single_continue: width
|
||||
;=================================
|
||||
; width in X
|
||||
|
||||
hlin_single_continue:
|
||||
|
||||
hlin_single_top:
|
||||
lda COLOR
|
||||
and #$f0
|
||||
sta COLOR
|
||||
|
||||
hlin_single_top_loop:
|
||||
ldy #0
|
||||
lda (GBASL),Y
|
||||
and #$0f
|
||||
ora COLOR
|
||||
sta (GBASL),Y
|
||||
inc GBASL
|
||||
dex
|
||||
bne hlin_single_top_loop
|
||||
|
||||
rts
|
||||
|
||||
hlin_single_bottom:
|
||||
|
||||
lda COLOR
|
||||
and #$0f
|
||||
sta COLOR
|
||||
|
||||
hlin_single_bottom_loop:
|
||||
ldy #0
|
||||
lda (GBASL),Y
|
||||
and #$f0
|
||||
sta (GBASL),Y
|
||||
inc GBASL
|
||||
dex
|
||||
bne hlin_single_bottom_loop
|
||||
|
||||
rts
|
||||
|
||||
|
||||
5
graphics/gr/mode7/gr_offsets.s
Normal file
5
graphics/gr/mode7/gr_offsets.s
Normal file
@ -0,0 +1,5 @@
|
||||
; move these to zero page for slight speed increase?
|
||||
gr_offsets:
|
||||
.word $400,$480,$500,$580,$600,$680,$700,$780
|
||||
.word $428,$4a8,$528,$5a8,$628,$6a8,$728,$7a8
|
||||
.word $450,$4d0,$550,$5d0,$650,$6d0,$750,$7d0
|
||||
48
graphics/gr/mode7/gr_plot.s
Normal file
48
graphics/gr/mode7/gr_plot.s
Normal file
@ -0,0 +1,48 @@
|
||||
;================================
|
||||
; plot routine
|
||||
;================================
|
||||
; Xcoord in XPOS
|
||||
; Ycoord in YPOS
|
||||
; color in COLOR
|
||||
plot:
|
||||
lda YPOS ; 2
|
||||
|
||||
lsr ; shift bottom bit into carry ; 2
|
||||
|
||||
bcc plot_even ; 2nt/3
|
||||
plot_odd:
|
||||
ldx #$f0 ; 2
|
||||
bcs plot_c_done ; 2nt/3
|
||||
plot_even:
|
||||
ldx #$0f ; 2
|
||||
plot_c_done:
|
||||
stx MASK ; 3
|
||||
|
||||
asl ; shift back (now even) ; 2
|
||||
tay
|
||||
|
||||
lda gr_offsets,Y ; lookup low-res memory address ; 4
|
||||
clc ; 2
|
||||
adc XPOS ; 3
|
||||
sta GBASL ; 3
|
||||
iny ; 2
|
||||
|
||||
lda gr_offsets,Y ; 4
|
||||
adc DRAW_PAGE ; add in draw page offset ; 3
|
||||
sta GBASH ; 3
|
||||
|
||||
ldy #0 ; 2
|
||||
|
||||
plot_write:
|
||||
lda MASK ; 3
|
||||
eor #$ff ; 2
|
||||
|
||||
and (GBASL),Y ; 5
|
||||
sta COLOR_MASK ; 3
|
||||
|
||||
lda COLOR ; 3
|
||||
and MASK ; 3
|
||||
ora COLOR_MASK ; 3
|
||||
sta (GBASL),Y ; 5
|
||||
|
||||
rts ; 6
|
||||
101
graphics/gr/mode7/gr_putsprite.s
Normal file
101
graphics/gr/mode7/gr_putsprite.s
Normal file
@ -0,0 +1,101 @@
|
||||
;=============================================
|
||||
; put_sprite
|
||||
;=============================================
|
||||
; Sprite to display in INH,INL
|
||||
; Location is XPOS,YPOS
|
||||
; Note, only works if YPOS is multiple of two?
|
||||
|
||||
put_sprite:
|
||||
|
||||
ldy #0 ; byte 0 is xsize ; 2
|
||||
lda (INL),Y ; 5
|
||||
sta CH ; xsize is in CH ; 3
|
||||
iny ; 2
|
||||
|
||||
lda (INL),Y ; byte 1 is ysize ; 5
|
||||
sta CV ; ysize is in CV ; 3
|
||||
iny ; 2
|
||||
|
||||
lda YPOS ; make a copy of ypos ; 3
|
||||
sta TEMPY ; as we modify it ; 3
|
||||
;===========
|
||||
; 28
|
||||
put_sprite_loop:
|
||||
sty TEMP ; save sprite pointer ; 3
|
||||
|
||||
ldy TEMPY ; 3
|
||||
lda gr_offsets,Y ; lookup low-res memory address ; 5
|
||||
clc ; 2
|
||||
adc XPOS ; add in xpos ; 3
|
||||
sta OUTL ; store out low byte of addy ; 3
|
||||
lda gr_offsets+1,Y ; look up high byte ; 5
|
||||
adc DRAW_PAGE ; ; 3
|
||||
sta OUTH ; and store it out ; 3
|
||||
ldy TEMP ; restore sprite pointer ; 3
|
||||
|
||||
; OUTH:OUTL now points at right place
|
||||
|
||||
ldx CH ; load xsize into x ; 3
|
||||
;===========
|
||||
; 36
|
||||
put_sprite_pixel:
|
||||
lda (INL),Y ; get sprite colors ; 5
|
||||
iny ; increment sprite pointer ; 2
|
||||
|
||||
sty TEMP ; save sprite pointer ; 3
|
||||
ldy #$0 ; 2
|
||||
|
||||
; check if completely transparent
|
||||
; if so, skip
|
||||
|
||||
cmp #$0 ; if all zero, transparent ; 2
|
||||
beq put_sprite_done_draw ; don't draw it ; 2nt/3
|
||||
; FIXME: use BIT? ;==============
|
||||
; 17
|
||||
|
||||
sta COLOR ; save color for later ; 3
|
||||
|
||||
; check if top pixel transparent
|
||||
|
||||
and #$f0 ; check if top nibble zero ; 2
|
||||
bne put_sprite_bottom ; if not skip ahead ; 2nt/3
|
||||
|
||||
lda #$f0 ; setup mask ; 2
|
||||
sta MASK ; 3
|
||||
bmi put_sprite_mask ; 2nt/3
|
||||
|
||||
put_sprite_bottom:
|
||||
lda COLOR ; re-load color ; 3
|
||||
and #$0f ; check if bottom nibble zero ; 2
|
||||
bne put_sprite_all ; if not, skip ahead ; 2nt/3
|
||||
lda #$0f ; 2
|
||||
sta MASK ; setup mask ; 3
|
||||
|
||||
put_sprite_mask:
|
||||
lda (OUTL),Y ; get color at output ; 5
|
||||
and MASK ; mask off unneeded part ; 3
|
||||
ora COLOR ; or the color in ; 3
|
||||
sta (OUTL),Y ; store it back ; 5
|
||||
|
||||
jmp put_sprite_done_draw ; we are done ; 3
|
||||
|
||||
put_sprite_all:
|
||||
lda COLOR ; load color ; 3
|
||||
sta (OUTL),Y ; and write it out ; 5
|
||||
|
||||
|
||||
put_sprite_done_draw:
|
||||
|
||||
ldy TEMP ; restore sprite pointer ; 3
|
||||
|
||||
inc OUTL ; increment output pointer ; 5
|
||||
dex ; decrement x counter ; 2
|
||||
bne put_sprite_pixel ; if not done, keep looping ; 2nt/3
|
||||
|
||||
inc TEMPY ; each line has two y vars ; 5
|
||||
inc TEMPY ; 5
|
||||
dec CV ; decemenet total y count ; 5
|
||||
bne put_sprite_loop ; loop if not done ; 2nt/3
|
||||
|
||||
rts ; return ; 6
|
||||
|
||||
195
graphics/gr/mode7/gr_scroll.s
Normal file
195
graphics/gr/mode7/gr_scroll.s
Normal file
@ -0,0 +1,195 @@
|
||||
.ifndef scroll_row1
|
||||
scroll_row1 EQU $8A00
|
||||
scroll_row2 EQU $8B00
|
||||
scroll_row3 EQU $8C00
|
||||
scroll_row4 EQU $8D00
|
||||
.endif
|
||||
|
||||
SCROLL_LENGTH EQU $61
|
||||
OFFSET EQU $62
|
||||
|
||||
|
||||
;========================
|
||||
; scroll some text
|
||||
;========================
|
||||
; RLE compressed data in INL/INH
|
||||
; CV is Y position to display at
|
||||
|
||||
gr_scroll:
|
||||
lda #0
|
||||
sta OFFSET
|
||||
|
||||
;=======================
|
||||
; decompress scroll text
|
||||
;=======================
|
||||
|
||||
jsr decompress_scroll
|
||||
|
||||
|
||||
scroll_loop:
|
||||
|
||||
ldx #0
|
||||
|
||||
ldy CV
|
||||
lsr
|
||||
|
||||
lda gr_offsets,Y ; get position
|
||||
sta sm1+1
|
||||
lda gr_offsets+2,Y ; get position
|
||||
sta sm2+1
|
||||
lda gr_offsets+4,Y ; get position
|
||||
sta sm3+1
|
||||
lda gr_offsets+6,Y ; get position
|
||||
sta sm4+1
|
||||
|
||||
|
||||
iny
|
||||
|
||||
clc
|
||||
|
||||
lda gr_offsets,Y ; get position
|
||||
adc DRAW_PAGE
|
||||
sta sm1+2
|
||||
lda gr_offsets+2,Y ; get position
|
||||
adc DRAW_PAGE
|
||||
sta sm2+2
|
||||
lda gr_offsets+4,Y ; get position
|
||||
adc DRAW_PAGE
|
||||
sta sm3+2
|
||||
lda gr_offsets+6,Y ; get position
|
||||
adc DRAW_PAGE
|
||||
sta sm4+2
|
||||
|
||||
ldy OFFSET
|
||||
|
||||
draw_loop:
|
||||
|
||||
lda scroll_row1,Y
|
||||
sm1:
|
||||
sta $400,X
|
||||
|
||||
lda scroll_row2,Y
|
||||
sm2:
|
||||
sta $480,X
|
||||
|
||||
lda scroll_row3,Y
|
||||
sm3:
|
||||
sta $500,X
|
||||
|
||||
lda scroll_row4,Y
|
||||
sm4:
|
||||
sta $580,X
|
||||
|
||||
iny
|
||||
inx
|
||||
cpx #40
|
||||
bne draw_loop
|
||||
|
||||
;==================
|
||||
; flip pages
|
||||
;==================
|
||||
|
||||
jsr page_flip ; 6
|
||||
|
||||
;==================
|
||||
; delay
|
||||
;==================
|
||||
|
||||
lda #125
|
||||
jsr WAIT
|
||||
|
||||
|
||||
;==================
|
||||
; loop forever
|
||||
;==================
|
||||
clc
|
||||
lda OFFSET
|
||||
adc #40
|
||||
cmp SCROLL_LENGTH
|
||||
beq done_scrolling
|
||||
inc OFFSET
|
||||
jmp scroll_loop ; 3
|
||||
|
||||
done_scrolling:
|
||||
rts
|
||||
|
||||
;=======================
|
||||
; decompress scroll
|
||||
;=======================
|
||||
decompress_scroll:
|
||||
ldy #0
|
||||
jsr scroll_load_and_increment
|
||||
sta SCROLL_LENGTH
|
||||
|
||||
lda #<scroll_row1
|
||||
sta OUTL
|
||||
lda #>scroll_row1
|
||||
sta OUTH
|
||||
|
||||
decompress_scroll_loop:
|
||||
jsr scroll_load_and_increment ; load compressed value
|
||||
|
||||
cmp #$A1 ; EOF marker
|
||||
beq done_decompress_scroll ; if EOF, exit
|
||||
|
||||
pha ; save
|
||||
|
||||
and #$f0 ; mask
|
||||
cmp #$a0 ; see if special AX
|
||||
beq decompress_scroll_special
|
||||
|
||||
pla ; note, PLA sets flags!
|
||||
|
||||
ldx #$1 ; only want to print 1
|
||||
bne decompress_scroll_run
|
||||
|
||||
decompress_scroll_special:
|
||||
pla
|
||||
|
||||
and #$0f ; check if was A0
|
||||
|
||||
bne decompress_scroll_color ; if A0 need to read run, color
|
||||
|
||||
decompress_scroll_large:
|
||||
jsr scroll_load_and_increment ; get run length
|
||||
|
||||
decompress_scroll_color:
|
||||
tax ; put runlen into X
|
||||
jsr scroll_load_and_increment ; get color
|
||||
|
||||
decompress_scroll_run:
|
||||
sta (OUTL),Y
|
||||
pha
|
||||
|
||||
clc ; increment 16-bit pointer
|
||||
lda OUTL
|
||||
adc #$1
|
||||
sta OUTL
|
||||
lda OUTH
|
||||
adc #$0
|
||||
sta OUTH
|
||||
|
||||
pla
|
||||
|
||||
dex ; repeat for X times
|
||||
bne decompress_scroll_run
|
||||
|
||||
beq decompress_scroll_loop ; get next run
|
||||
|
||||
done_decompress_scroll:
|
||||
rts
|
||||
|
||||
|
||||
scroll_load_and_increment:
|
||||
lda (INL),Y ; load and increment 16-bit pointer
|
||||
pha
|
||||
clc
|
||||
lda INL
|
||||
adc #$1
|
||||
sta INL
|
||||
lda INH
|
||||
adc #$0
|
||||
sta INH
|
||||
pla
|
||||
rts
|
||||
|
||||
20
graphics/gr/mode7/gr_setpage.s
Normal file
20
graphics/gr/mode7/gr_setpage.s
Normal file
@ -0,0 +1,20 @@
|
||||
;==========================================================
|
||||
; set_text_page0
|
||||
;==========================================================
|
||||
;
|
||||
set_text_page0:
|
||||
bit PAGE0 ; set page0
|
||||
bit TEXT ; set text mode
|
||||
rts
|
||||
|
||||
;==========================================================
|
||||
; set_gr_page0
|
||||
;==========================================================
|
||||
;
|
||||
set_gr_page0:
|
||||
bit PAGE0 ; set page 0
|
||||
bit LORES ; Lo-res graphics
|
||||
bit TEXTGR ; mixed gr/text mode
|
||||
bit SET_GR ; set graphics
|
||||
rts
|
||||
|
||||
111
graphics/gr/mode7/keypress.s
Normal file
111
graphics/gr/mode7/keypress.s
Normal file
@ -0,0 +1,111 @@
|
||||
|
||||
;==========================================================
|
||||
; Wait until keypressed
|
||||
;==========================================================
|
||||
;
|
||||
|
||||
wait_until_keypressed:
|
||||
lda KEYPRESS ; check if keypressed
|
||||
bpl wait_until_keypressed ; if not, loop
|
||||
jmp figure_out_key
|
||||
|
||||
|
||||
;==========================================================
|
||||
; Get Key
|
||||
;==========================================================
|
||||
;
|
||||
|
||||
get_key:
|
||||
|
||||
check_paddle_button:
|
||||
|
||||
; check for paddle button
|
||||
|
||||
bit PADDLE_BUTTON0 ; 4
|
||||
bpl no_button ; 2nt/3
|
||||
lda #' '+128 ; 2
|
||||
jmp save_key ; 3
|
||||
|
||||
no_button:
|
||||
lda KEYPRESS ; 3
|
||||
bpl no_key ; 2nt/3
|
||||
|
||||
figure_out_key:
|
||||
cmp #' '+128 ; the mask destroys space ; 2
|
||||
beq save_key ; so handle it specially ; 2nt/3
|
||||
|
||||
and #$5f ; mask, to make upper-case ; 2
|
||||
check_right_arrow:
|
||||
cmp #$15 ; 2
|
||||
bne check_left_arrow ; 2nt/3
|
||||
lda #'D' ; 2
|
||||
check_left_arrow:
|
||||
cmp #$08 ; 2
|
||||
bne check_up_arrow ; 2nt/3
|
||||
lda #'A' ; 2
|
||||
check_up_arrow:
|
||||
cmp #$0B ; 2
|
||||
bne check_down_arrow ; 2nt/3
|
||||
lda #'W' ; 2
|
||||
check_down_arrow:
|
||||
cmp #$0A ; 2
|
||||
bne check_escape ; 2nt/3
|
||||
lda #'S' ; 2
|
||||
check_escape:
|
||||
cmp #$1B ; 2
|
||||
bne save_key ; 2nt/3
|
||||
lda #'Q' ; 2
|
||||
jmp save_key ; 3
|
||||
|
||||
no_key:
|
||||
bit PADDLE_STATUS ; 3
|
||||
bpl no_key_store ; 2nt/3
|
||||
|
||||
; check for paddle action
|
||||
; code from http://web.pdx.edu/~heiss/technotes/aiie/tn.aiie.06.html
|
||||
|
||||
inc PADDLE_STATUS ; 5
|
||||
lda PADDLE_STATUS ; 3
|
||||
and #$03 ; 2
|
||||
beq check_paddles ; 2nt/3
|
||||
jmp no_key_store ; 3
|
||||
|
||||
check_paddles:
|
||||
lda PADDLE_STATUS ; 3
|
||||
and #$80 ; 2
|
||||
sta PADDLE_STATUS ; 3
|
||||
|
||||
ldx #$0 ; 2
|
||||
LDA PTRIG ;TRIGGER PADDLES ; 4
|
||||
LDY #0 ;INIT COUNTER ; 2
|
||||
NOP ;COMPENSATE FOR 1ST COUNT ; 2
|
||||
NOP ; 2
|
||||
PREAD2: LDA PADDL0,X ;COUNT EVERY 11 uSEC. ; 4
|
||||
BPL RTS2D ;BRANCH WHEN TIMED OUT ; 2nt/3
|
||||
INY ;INCREMENT COUNTER ; 2
|
||||
BNE PREAD2 ;CONTINUE COUNTING ; 2nt/3
|
||||
DEY ;COUNTER OVERFLOWED ; 2
|
||||
RTS2D: ;RETURN W/VALUE 0-255
|
||||
|
||||
cpy #96 ; 2
|
||||
bmi paddle_left ; 2nt/3
|
||||
cpy #160 ; 2
|
||||
bmi no_key_store ; 2nt/3
|
||||
lda #'D' ; 2
|
||||
jmp save_key ; 3
|
||||
paddle_left:
|
||||
lda #'A' ; 2
|
||||
jmp save_key ; 3
|
||||
|
||||
no_key_store:
|
||||
lda #0 ; no key, so save a zero ; 2
|
||||
|
||||
save_key:
|
||||
sta LASTKEY ; save the key to our buffer ; 2
|
||||
bit KEYRESET ; clear the keyboard buffer ; 4
|
||||
rts ; 6
|
||||
;============
|
||||
; 33=nokey
|
||||
; 48=worstkey
|
||||
|
||||
|
||||
@ -1114,18 +1114,18 @@ exit:
|
||||
; External modules
|
||||
;===============================================
|
||||
|
||||
.include "../../asm_routines/gr_hlin.s"
|
||||
.include "../../asm_routines/pageflip.s"
|
||||
.include "../../asm_routines/gr_setpage.s"
|
||||
.include "../../asm_routines/keypress.s"
|
||||
.include "../../asm_routines/gr_putsprite.s"
|
||||
.include "../../asm_routines/text_print.s"
|
||||
.include "../../asm_routines/gr_offsets.s"
|
||||
.include "../../asm_routines/gr_fast_clear.s"
|
||||
.include "gr_hlin.s"
|
||||
.include "pageflip.s"
|
||||
.include "gr_setpage.s"
|
||||
.include "keypress.s"
|
||||
.include "gr_putsprite.s"
|
||||
.include "text_print.s"
|
||||
.include "gr_offsets.s"
|
||||
.include "gr_fast_clear.s"
|
||||
|
||||
.if .def(CHECKERBOARD_MAP)
|
||||
.include "../../asm_routines/gr_scroll.s"
|
||||
.include "../../asm_routines/bg_scroll.s"
|
||||
.include "gr_scroll.s"
|
||||
.include "bg_scroll.s"
|
||||
.endif
|
||||
|
||||
|
||||
@ -1143,7 +1143,7 @@ exit:
|
||||
.include "starry_sky.scroll"
|
||||
.endif
|
||||
|
||||
.include "../../asm_routines/multiply_fast.s"
|
||||
.include "multiply_fast.s"
|
||||
|
||||
|
||||
; 8.8 fixed point
|
||||
|
||||
351
graphics/gr/mode7/multiply_fast.s
Normal file
351
graphics/gr/mode7/multiply_fast.s
Normal file
@ -0,0 +1,351 @@
|
||||
; Fast mutiply
|
||||
|
||||
|
||||
; Note for our purposes we only care about 8.8 x 8.8 fixed point
|
||||
; with 8.8 result, which means we only care about the middle two bytes
|
||||
; of the 32 bit result. So we disable generation of the high and low byte
|
||||
; to save some cycles.
|
||||
|
||||
;
|
||||
; The old routine took around 700 cycles for a 16bitx16bit=32bit mutiply
|
||||
; This routine, at an expense of 2kB of looku tables, takes around 250
|
||||
; If you reuse a term the next time this drops closer to 200
|
||||
|
||||
; This routine was described by Stephen Judd and found
|
||||
; in The Fridge and in the C=Hacking magazine
|
||||
; http://codebase64.org/doku.php?id=base:seriously_fast_multiplication
|
||||
|
||||
; The key thing to note is that
|
||||
; (a+b)^2 (a-b)^2
|
||||
; a*b = ------- - --------
|
||||
; 4 4
|
||||
; So if you have tables of the squares of 0..511 you can lookup and subtract
|
||||
; instead of multiplying.
|
||||
|
||||
; Table generation: I:0..511
|
||||
; square1_lo = <((I*I)/4)
|
||||
; square1_hi = >((I*I)/4)
|
||||
; square2_lo = <(((I-255)*(I-255))/4)
|
||||
; square2_hi = >(((I-255)*(I-255))/4)
|
||||
|
||||
; Note: DOS3.3 starts at $9600
|
||||
|
||||
.ifndef square1_lo
|
||||
square1_lo EQU $8E00
|
||||
square1_hi EQU $9000
|
||||
square2_lo EQU $9200
|
||||
square2_hi EQU $9400
|
||||
.endif
|
||||
|
||||
; for(i=0;i<512;i++) {
|
||||
; square1_lo[i]=((i*i)/4)&0xff;
|
||||
; square1_hi[i]=(((i*i)/4)>>8)&0xff;
|
||||
; square2_lo[i]=( ((i-255)*(i-255))/4)&0xff;
|
||||
; square2_hi[i]=(( ((i-255)*(i-255))/4)>>8)&0xff;
|
||||
; }
|
||||
|
||||
init_multiply_tables:
|
||||
|
||||
; Build the add tables
|
||||
|
||||
ldx #$00
|
||||
txa
|
||||
.byte $c9 ; CMP #immediate - skip TYA and clear carry flag
|
||||
lb1: tya
|
||||
adc #$00 ; 0
|
||||
ml1: sta square1_hi,x ; square1_hi[0]=0
|
||||
tay ; y=0
|
||||
cmp #$40 ; subtract 64 and update flags (c=0)
|
||||
txa ; a=0
|
||||
ror ; rotate
|
||||
ml9: adc #$00 ; add 0
|
||||
sta ml9+1 ; update add value
|
||||
inx ; x=1
|
||||
ml0: sta square1_lo,x ; square1_lo[0]=1
|
||||
bne lb1 ; if not zero, loop
|
||||
inc ml0+2 ; increment values
|
||||
inc ml1+2 ; increment values
|
||||
clc ; c=0
|
||||
iny ; y=1
|
||||
bne lb1 ; loop
|
||||
|
||||
; Build the subtract tables based on the existing one
|
||||
|
||||
ldx #$00
|
||||
ldy #$ff
|
||||
second_table:
|
||||
lda square1_hi+1,x
|
||||
sta square2_hi+$100,x
|
||||
lda square1_hi,x
|
||||
sta square2_hi,y
|
||||
lda square1_lo+1,x
|
||||
sta square2_lo+$100,x
|
||||
lda square1_lo,x
|
||||
sta square2_lo,y
|
||||
dey
|
||||
inx
|
||||
bne second_table
|
||||
|
||||
|
||||
rts
|
||||
|
||||
|
||||
; Fast 16x16 bit unsigned multiplication, 32-bit result
|
||||
; Input: NUM1H:NUM1L * NUM2H:NUM2L
|
||||
; Result: RESULT3:RESULT2:RESULT1:RESULT0
|
||||
;
|
||||
; Does self-modifying code to hard-code NUM1H:NUM1L into the code
|
||||
; carry=0: re-use previous NUM1H:NUM1L
|
||||
; carry=1: reload NUM1H:NUM1L (58 cycles slower)
|
||||
;
|
||||
; clobbered: RESULT, X, A, C
|
||||
; Allocation setup: T1,T2 and RESULT preferably on Zero-page.
|
||||
;
|
||||
; NUM1H (x_i), NUM1L (x_f)
|
||||
; NUM2H (y_i), NUM2L (y_f)
|
||||
|
||||
; NUM1L * NUM2L = AAaa
|
||||
; NUM1L * NUM2H = BBbb
|
||||
; NUM1H * NUM2L = CCcc
|
||||
; NUM1H * NUM2H = DDdd
|
||||
;
|
||||
; AAaa
|
||||
; BBbb
|
||||
; CCcc
|
||||
; + DDdd
|
||||
; ----------
|
||||
; RESULT
|
||||
|
||||
;fixed_16x16_mul_unsigned:
|
||||
|
||||
multiply:
|
||||
|
||||
bcc num1_same_as_last_time ; 2nt/3
|
||||
|
||||
;============================
|
||||
; Set up self-modifying code
|
||||
; this changes the code to be hard-coded to multiply by NUM1H:NUM1L
|
||||
;============================
|
||||
|
||||
lda NUM1L ; load the low byte ; 3
|
||||
sta sm1a+1 ; 3
|
||||
sta sm3a+1 ; 3
|
||||
sta sm5a+1 ; 3
|
||||
sta sm7a+1 ; 3
|
||||
eor #$ff ; invert the bits for subtracting ; 2
|
||||
sta sm2a+1 ; 3
|
||||
sta sm4a+1 ; 3
|
||||
sta sm6a+1 ; 3
|
||||
sta sm8a+1 ; 3
|
||||
lda NUM1H ; load the high byte ; 3
|
||||
sta sm1b+1 ; 3
|
||||
sta sm3b+1 ; 3
|
||||
sta sm5b+1 ; 3
|
||||
; sta sm7b+1 ;
|
||||
eor #$ff ; invert the bits for subtractin ; 2
|
||||
sta sm2b+1 ; 3
|
||||
sta sm4b+1 ; 3
|
||||
sta sm6b+1 ; 3
|
||||
; sta sm8b+1 ;
|
||||
;===========
|
||||
; 52
|
||||
|
||||
num1_same_as_last_time:
|
||||
|
||||
;==========================
|
||||
; Perform NUM1L * NUM2L = AAaa
|
||||
;==========================
|
||||
|
||||
ldx NUM2L ; (low le) ; 3
|
||||
sec ; 2
|
||||
sm1a:
|
||||
lda square1_lo,x ; 4
|
||||
sm2a:
|
||||
sbc square2_lo,x ; 4
|
||||
|
||||
; a is _aa
|
||||
|
||||
; sta RESULT+0 ;
|
||||
|
||||
sm3a:
|
||||
lda square1_hi,x ; 4
|
||||
sm4a:
|
||||
sbc square2_hi,x ; 4
|
||||
; a is _AA
|
||||
sta _AA+1 ; 3
|
||||
;===========
|
||||
; 24
|
||||
|
||||
; Perform NUM1H * NUM2L = CCcc
|
||||
sec ; 2
|
||||
sm1b:
|
||||
lda square1_lo,x ; 4
|
||||
sm2b:
|
||||
sbc square2_lo,x ; 4
|
||||
; a is _cc
|
||||
sta _cc+1 ; 3
|
||||
sm3b:
|
||||
lda square1_hi,x ; 4
|
||||
sm4b:
|
||||
sbc square2_hi,x ; 4
|
||||
; a is _CC
|
||||
sta _CC+1 ; 3
|
||||
;===========
|
||||
; 24
|
||||
|
||||
;==========================
|
||||
; Perform NUM1L * NUM2H = BBbb
|
||||
;==========================
|
||||
ldx NUM2H ; 3
|
||||
sec ; 2
|
||||
sm5a:
|
||||
lda square1_lo,x ; 4
|
||||
sm6a:
|
||||
sbc square2_lo,x ; 4
|
||||
; a is _bb
|
||||
sta _bb+1 ; 3
|
||||
|
||||
sm7a:
|
||||
lda square1_hi,x ; 4
|
||||
sm8a:
|
||||
sbc square2_hi,x ; 4
|
||||
; a is _BB
|
||||
sta _BB+1 ; 3
|
||||
;===========
|
||||
; 27
|
||||
|
||||
;==========================
|
||||
; Perform NUM1H * NUM2H = DDdd
|
||||
;==========================
|
||||
sec ; 2
|
||||
sm5b:
|
||||
lda square1_lo,x ; 4
|
||||
sm6b:
|
||||
sbc square2_lo,x ; 4
|
||||
; a is _dd
|
||||
sta _dd+1 ; 3
|
||||
;sm7b:
|
||||
; lda square1_hi,x ;
|
||||
;sm8b:
|
||||
; sbc square2_hi,x ;
|
||||
; a = _DD
|
||||
; sta RESULT+3 ;
|
||||
;===========
|
||||
; 13
|
||||
|
||||
;===========================================
|
||||
; Add the separate multiplications together
|
||||
;===========================================
|
||||
|
||||
clc ; 2
|
||||
_AA:
|
||||
lda #0 ; loading _AA ; 2
|
||||
_bb:
|
||||
adc #0 ; adding in _bb ; 2
|
||||
sta RESULT+1 ; 3
|
||||
;==========
|
||||
; 9
|
||||
; product[2]=_BB+_CC+c
|
||||
|
||||
_BB:
|
||||
lda #0 ; loading _BB ; 2
|
||||
_CC:
|
||||
adc #0 ; adding in _CC ; 2
|
||||
sta RESULT+2 ; 3
|
||||
;===========
|
||||
; 7
|
||||
|
||||
; product[3]=_DD+c
|
||||
|
||||
; bcc dd_no_carry1 ;
|
||||
; inc RESULT+3 ;
|
||||
clc ; 2
|
||||
;=============
|
||||
; 2
|
||||
dd_no_carry1:
|
||||
|
||||
; product[1]=_AA+_bb+_cc
|
||||
|
||||
_cc:
|
||||
lda #0 ; load _cc ; 2
|
||||
adc RESULT+1 ; 3
|
||||
sta RESULT+1 ; 3
|
||||
|
||||
; product[2]=_BB+_CC+_dd+c
|
||||
|
||||
_dd:
|
||||
lda #0 ; load _dd ; 2
|
||||
adc RESULT+2 ; 3
|
||||
sta RESULT+2 ; 3
|
||||
|
||||
;===========
|
||||
; 16
|
||||
; product[3]=_DD+c
|
||||
|
||||
|
||||
; bcc dd_no_carry2 ;
|
||||
; inc RESULT+3 ;
|
||||
|
||||
;=============
|
||||
; 0
|
||||
|
||||
dd_no_carry2:
|
||||
|
||||
; *z_i=product[1];
|
||||
; *z_f=product[0];
|
||||
|
||||
; rts ; 6
|
||||
|
||||
|
||||
;=================
|
||||
; Signed multiply
|
||||
;=================
|
||||
|
||||
;multiply:
|
||||
|
||||
; jsr fixed_16x16_mul_unsigned ; 6
|
||||
|
||||
lda NUM1H ; x_i ; 3
|
||||
;===========
|
||||
; 12
|
||||
|
||||
|
||||
bpl x_positive ;^3/2nt
|
||||
|
||||
sec ; 2
|
||||
lda RESULT+2 ; 3
|
||||
sbc NUM2L ; 3
|
||||
sta RESULT+2 ; 3
|
||||
; lda RESULT+3 ;
|
||||
; sbc NUM2H ;
|
||||
; sta RESULT+3 ;
|
||||
;============
|
||||
; 10
|
||||
|
||||
x_positive:
|
||||
|
||||
lda NUM2H ; y_i ; 3
|
||||
;============
|
||||
; ; 6
|
||||
|
||||
bpl y_positive ;^3/2nt
|
||||
|
||||
|
||||
sec ; 2
|
||||
lda RESULT+2 ; 3
|
||||
sbc NUM1L ; 3
|
||||
sta RESULT+2 ; 3
|
||||
; lda RESULT+3 ;
|
||||
; sbc NUM1H ;
|
||||
; sta RESULT+3 ;
|
||||
;===========
|
||||
; 10
|
||||
|
||||
y_positive:
|
||||
ldx RESULT+2 ; *z_i=product[2]; ; 3
|
||||
lda RESULT+1 ; *z_f=product[1]; ; 3
|
||||
|
||||
rts ; 6
|
||||
;==========
|
||||
; 12
|
||||
|
||||
24
graphics/gr/mode7/pageflip.s
Normal file
24
graphics/gr/mode7/pageflip.s
Normal file
@ -0,0 +1,24 @@
|
||||
;==========
|
||||
; page_flip
|
||||
;==========
|
||||
|
||||
page_flip:
|
||||
lda DISP_PAGE ; 3
|
||||
beq page_flip_show_1 ; 2nt/3
|
||||
page_flip_show_0:
|
||||
bit PAGE0 ; 4
|
||||
lda #4 ; 2
|
||||
sta DRAW_PAGE ; DRAW_PAGE=1 ; 3
|
||||
lda #0 ; 2
|
||||
sta DISP_PAGE ; DISP_PAGE=0 ; 3
|
||||
rts ; 6
|
||||
page_flip_show_1:
|
||||
bit PAGE1 ; 4
|
||||
sta DRAW_PAGE ; DRAW_PAGE=0 ; 3
|
||||
lda #1 ; 2
|
||||
sta DISP_PAGE ; DISP_PAGE=1 ; 3
|
||||
rts ; 6
|
||||
;====================
|
||||
; DISP_PAGE=0 26
|
||||
; DISP_PAGE=1 24
|
||||
|
||||
@ -56,12 +56,12 @@ blah:
|
||||
; External modules
|
||||
;===============================================
|
||||
|
||||
.include "../../asm_routines/pageflip.s"
|
||||
.include "../../asm_routines/gr_setpage.s"
|
||||
;.include "../../asm_routines/keypress.s"
|
||||
;.include "../../asm_routines/gr_putsprite.s"
|
||||
.include "../../asm_routines/gr_offsets.s"
|
||||
.include "../../asm_routines/gr_fast_clear.s"
|
||||
.include "../../asm_routines/gr_plot.s"
|
||||
.include "pageflip.s"
|
||||
.include "gr_setpage.s"
|
||||
;.include "keypress.s"
|
||||
;.include "gr_putsprite.s"
|
||||
.include "gr_offsets.s"
|
||||
.include "gr_fast_clear.s"
|
||||
.include "gr_plot.s"
|
||||
|
||||
|
||||
|
||||
@ -207,11 +207,11 @@ finish_line:
|
||||
; External modules
|
||||
;===============================================
|
||||
|
||||
.include "../../asm_routines/pageflip.s"
|
||||
.include "../../asm_routines/gr_setpage.s"
|
||||
.include "../../asm_routines/gr_offsets.s"
|
||||
.include "../../asm_routines/gr_fast_clear.s"
|
||||
.include "../../asm_routines/gr_hlin.s"
|
||||
.include "pageflip.s"
|
||||
.include "gr_setpage.s"
|
||||
.include "gr_offsets.s"
|
||||
.include "gr_fast_clear.s"
|
||||
.include "gr_hlin.s"
|
||||
|
||||
;======================
|
||||
; some arrays
|
||||
|
||||
@ -36,11 +36,11 @@ scroll_forever:
|
||||
;===============================================
|
||||
; Routines
|
||||
;===============================================
|
||||
.include "../../asm_routines/gr_fast_clear.s"
|
||||
.include "../../asm_routines/gr_scroll.s"
|
||||
.include "../../asm_routines/pageflip.s"
|
||||
.include "../../asm_routines/gr_setpage.s"
|
||||
.include "../../asm_routines/gr_offsets.s"
|
||||
.include "gr_fast_clear.s"
|
||||
.include "gr_scroll.s"
|
||||
.include "pageflip.s"
|
||||
.include "gr_setpage.s"
|
||||
.include "gr_offsets.s"
|
||||
|
||||
;===============================================
|
||||
; Variables
|
||||
|
||||
@ -51,13 +51,13 @@ scroll_forever:
|
||||
;===============================================
|
||||
; Routines
|
||||
;===============================================
|
||||
.include "../../asm_routines/gr_fast_clear.s"
|
||||
.include "../../asm_routines/gr_scroll.s"
|
||||
.include "../../asm_routines/pageflip.s"
|
||||
.include "../../asm_routines/gr_setpage.s"
|
||||
.include "../../asm_routines/keypress.s"
|
||||
.include "../../asm_routines/bg_scroll.s"
|
||||
.include "../../asm_routines/gr_offsets.s"
|
||||
.include "gr_fast_clear.s"
|
||||
.include "gr_scroll.s"
|
||||
.include "pageflip.s"
|
||||
.include "gr_setpage.s"
|
||||
.include "keypress.s"
|
||||
.include "bg_scroll.s"
|
||||
.include "gr_offsets.s"
|
||||
|
||||
;===============================================
|
||||
; Variables
|
||||
|
||||
@ -280,14 +280,14 @@ clear_x:
|
||||
; External modules
|
||||
;===============================================
|
||||
|
||||
.include "../../asm_routines/pageflip.s"
|
||||
.include "../../asm_routines/gr_setpage.s"
|
||||
;.include "../../asm_routines/keypress.s"
|
||||
;.include "../../asm_routines/gr_putsprite.s"
|
||||
.include "../../asm_routines/gr_offsets.s"
|
||||
.include "../../asm_routines/gr_fast_clear.s"
|
||||
.include "../../asm_routines/gr_plot.s"
|
||||
.include "../../asm_routines/multiply_fast.s"
|
||||
.include "pageflip.s"
|
||||
.include "gr_setpage.s"
|
||||
;.include "keypress.s"
|
||||
;.include "gr_putsprite.s"
|
||||
.include "gr_offsets.s"
|
||||
.include "gr_fast_clear.s"
|
||||
.include "gr_plot.s"
|
||||
.include "multiply_fast.s"
|
||||
|
||||
|
||||
;======================
|
||||
|
||||
@ -342,14 +342,14 @@ random_star:
|
||||
; External modules
|
||||
;===============================================
|
||||
|
||||
.include "../../asm_routines/pageflip.s"
|
||||
.include "../../asm_routines/gr_setpage.s"
|
||||
.include "../../asm_routines/keypress.s"
|
||||
.include "../../asm_routines/gr_putsprite.s"
|
||||
.include "../../asm_routines/gr_offsets.s"
|
||||
.include "../../asm_routines/gr_fast_clear.s"
|
||||
.include "../../asm_routines/gr_plot.s"
|
||||
.include "../../asm_routines/multiply_fast.s"
|
||||
.include "pageflip.s"
|
||||
.include "gr_setpage.s"
|
||||
.include "keypress.s"
|
||||
.include "gr_putsprite.s"
|
||||
.include "gr_offsets.s"
|
||||
.include "gr_fast_clear.s"
|
||||
.include "gr_plot.s"
|
||||
.include "multiply_fast.s"
|
||||
|
||||
|
||||
.include "sprites.inc"
|
||||
|
||||
@ -318,10 +318,10 @@ thankz:
|
||||
; External modules
|
||||
;===============================================
|
||||
|
||||
.include "../../asm_routines/pageflip.s"
|
||||
.include "../../asm_routines/gr_setpage.s"
|
||||
;.include "../../asm_routines/keypress.s"
|
||||
.include "../../asm_routines/gr_offsets.s"
|
||||
.include "../../asm_routines/gr_fast_clear.s"
|
||||
.include "../../asm_routines/gr_hlin.s"
|
||||
.include "../../asm_routines/text_print.s"
|
||||
.include "pageflip.s"
|
||||
.include "gr_setpage.s"
|
||||
;.include "keypress.s"
|
||||
.include "gr_offsets.s"
|
||||
.include "gr_fast_clear.s"
|
||||
.include "gr_hlin.s"
|
||||
.include "text_print.s"
|
||||
|
||||
80
graphics/gr/mode7/text_print.s
Normal file
80
graphics/gr/mode7/text_print.s
Normal file
@ -0,0 +1,80 @@
|
||||
;================================
|
||||
; htab_vtab
|
||||
;================================
|
||||
; move to CH/CV
|
||||
htab_vtab:
|
||||
lda CV
|
||||
asl
|
||||
tay
|
||||
lda gr_offsets,Y ; lookup low-res memory address
|
||||
clc
|
||||
adc CH ; add in xpos
|
||||
sta BASL ; store out low byte of addy
|
||||
|
||||
lda gr_offsets+1,Y ; look up high byte
|
||||
adc DRAW_PAGE ;
|
||||
sta BASH ; and store it out
|
||||
; BASH:BASL now points at right place
|
||||
|
||||
rts
|
||||
|
||||
;================================
|
||||
; move_and_print
|
||||
;================================
|
||||
; move to CH/CV
|
||||
move_and_print:
|
||||
jsr htab_vtab
|
||||
|
||||
;================================
|
||||
; print_string
|
||||
;================================
|
||||
|
||||
print_string:
|
||||
ldy #0
|
||||
print_string_loop:
|
||||
lda (OUTL),Y
|
||||
beq done_print_string
|
||||
ora #$80
|
||||
sta (BASL),Y
|
||||
iny
|
||||
bne print_string_loop
|
||||
done_print_string:
|
||||
; rts
|
||||
|
||||
;====================
|
||||
; point_to_end_string
|
||||
;====================
|
||||
point_to_end_string:
|
||||
iny
|
||||
tya
|
||||
clc
|
||||
adc OUTL
|
||||
sta OUTL
|
||||
lda #0
|
||||
adc OUTH
|
||||
sta OUTH
|
||||
|
||||
rts
|
||||
|
||||
|
||||
;================================
|
||||
; print_both_pages
|
||||
;================================
|
||||
print_both_pages:
|
||||
lda DRAW_PAGE
|
||||
pha
|
||||
|
||||
lda #0
|
||||
sta DRAW_PAGE
|
||||
jsr move_and_print
|
||||
|
||||
lda #4
|
||||
sta DRAW_PAGE
|
||||
jsr move_and_print
|
||||
|
||||
pla
|
||||
sta DRAW_PAGE
|
||||
|
||||
rts ; oops forgot this initially
|
||||
; explains the weird vertical stripes on the screen
|
||||
|
||||
23
graphics/gr/rotate/Makefile
Normal file
23
graphics/gr/rotate/Makefile
Normal file
@ -0,0 +1,23 @@
|
||||
include ../../Makefile.inc
|
||||
|
||||
DOS33 = ../../utils/dos33fs-utils/dos33
|
||||
TOKENIZE = ../../utils/asoft_basic-utils/tokenize_asoft
|
||||
|
||||
all: gr.dsk
|
||||
|
||||
gr.dsk: SNOW
|
||||
cp empty.dsk gr.dsk
|
||||
$(DOS33) -y gr.dsk BSAVE -a 0x0300 SNOW
|
||||
|
||||
###
|
||||
|
||||
SNOW: snow.o
|
||||
ld65 -o SNOW snow.o -C ../../linker_scripts/apple2_300.inc
|
||||
|
||||
snow.o: snow.s
|
||||
ca65 -o snow.o snow.s -l snow.lst
|
||||
|
||||
###
|
||||
|
||||
clean:
|
||||
rm -f *~ *.o *.lst SNOW
|
||||
Loading…
Reference in New Issue
Block a user