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megamusic: need to get music working
This commit is contained in:
parent
d528ee0b56
commit
c208d0f5a7
34
megamusic/Makefile
Normal file
34
megamusic/Makefile
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@ -0,0 +1,34 @@
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include ../Makefile.inc
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DOS33 = ../dos33fs-utils/dos33
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B2D = ../bmp2dhr/b2d
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PNG_TO_40x96 = ../gr-utils/png_to_40x96
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PNG_TO_RLE = ../gr-utils/png2rle
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all: megamusic.dsk
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megamusic.dsk: MEGAMUSIC MEGALOAD
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$(DOS33) -y megamusic.dsk BSAVE -a 0x4000 MEGAMUSIC
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$(DOS33) -y megamusic.dsk BSAVE -a 0x800 MEGALOAD
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####
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MEGAMUSIC: megamusic.o
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ld65 -o MEGAMUSIC megamusic.o -C ../linker_scripts/apple2_4000.inc
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megamusic.o: megamusic.s
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ca65 -o megamusic.o megamusic.s -l megamusic.lst
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####
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MEGALOAD: megaload.o
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ld65 -o MEGALOAD megaload.o -C ../linker_scripts/apple2_800.inc
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megaload.o: megaload.s
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ca65 -o megaload.o megaload.s -l megaload.lst
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####
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clean:
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rm -f *~ *.o *.lst MEGAMUSIC MEGALOAD
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177
megamusic/apple_40_96.inc
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177
megamusic/apple_40_96.inc
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@ -0,0 +1,177 @@
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apple_low: .byte $28 ; ysize=48
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.byte $A8,$FF, $5F, $5A, $55, $98, $55, $D8
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.byte $55, $58, $55,$55, $58, $95, $85, $58
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.byte $55, $95, $A3,$55, $85, $5A, $A0,$12,$FF, $BF
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.byte $5F, $DD, $5B, $5F, $5D, $DF, $5D
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.byte $5F,$5F, $8F, $5D, $5F, $5D, $5B, $5D
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.byte $FF, $D5, $59, $95, $58, $55, $A0,$13,$FF
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.byte $55, $08, $55, $05, $50, $A3,$55, $58
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.byte $0A, $5D, $05, $0A,$0A, $58, $DF, $BD
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.byte $DA, $5A, $59, $85, $5A, $A0,$12,$FF, $55
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.byte $08, $50, $05, $55, $A4,$5A, $55,$55, $00
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.byte $50, $05, $D5, $FA, $FF, $DA, $B5
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.byte $88, $5A, $5D, $A0,$12,$FF, $55,$55, $50, $55
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.byte $05, $65, $5A,$5A, $55,$55, $45, $55,$55, $05
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.byte $D5, $FA, $DD, $BF, $D5, $98, $55,$55
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.byte $DF, $A0,$11,$FF, $A3,$55, $50, $54, $55,$55, $05
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.byte $65, $55, $45, $55, $50, $05, $D5
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.byte $BD, $DF, $FD, $95, $58, $8B, $58
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.byte $5F, $A0,$11,$FF, $55, $05, $54, $00, $56
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.byte $A3,$55, $45, $05, $50, $55,$55, $00, $55
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.byte $DD, $FF, $5D, $55, $89, $95, $58
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.byte $5A, $A0,$11,$FF, $5D, $00, $55, $00, $A3,$55
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.byte $00, $56, $00, $55, $54, $00, $55
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.byte $85, $5D, $FA, $DD, $55, $88, $55
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.byte $90, $5F, $A0,$11,$FF, $DD, $50, $05, $50
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.byte $05, $40, $55, $05, $60, $05, $40
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.byte $05, $50, $05, $55, $DD, $BA, $DF
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.byte $55, $88, $55, $90, $5D, $5A,$5A, $5F
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.byte $DA, $5F,$5F, $DF, $5F, $A9,$FF, $5D, $50
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.byte $05, $50, $55, $00, $54, $05, $50
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.byte $05, $45, $00, $55, $50, $55, $DD
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.byte $5F, $FF, $55, $89, $55,$55, $F5, $5A
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.byte $FA, $DD, $B5, $D9, $5A, $5D, $5A
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.byte $A9,$FF, $5A, $55, $05, $55, $00, $05
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.byte $40, $05, $50, $05, $50, $04, $50
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.byte $05, $D5, $5D, $DF, $FD, $5B, $5D
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.byte $5B, $5D, $5B, $5A, $DD, $BB, $5D
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.byte $5A,$5A, $55,$55, $FA, $A8,$FF, $FA, $5A, $DA
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.byte $5D, $85, $A4,$55, $D8, $55,$55, $58, $55
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.byte $D5, $59, $DF, $FD, $55, $00, $55
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.byte $00, $50, $05, $50, $00, $55, $5A,$5A
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.byte $5B, $55, $DD, $A8,$FF, $5A, $DF, $BD
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.byte $8F, $5D,$5D, $5B, $5D, $5B, $5D, $FB
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.byte $D5, $F5, $D8, $F5,$F5, $FD, $5B, $55
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.byte $50, $00, $05, $00, $55, $00,$00, $55,$55
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.byte $5A, $DD, $55, $FA, $A7,$FF, $5A, $DD
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.byte $BB, $DD, $BA, $DD, $5F, $9D, $5A,$5A
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.byte $DD, $55, $D5, $55, $D8, $BB, $D5
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.byte $5B, $5D, $55, $00, $52, $00, $55
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.byte $00, $55, $52, $05, $55, $5A, $DD
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.byte $55, $FA, $A5,$FF, $5F,$5F, $DF, $FA, $FF
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.byte $FA, $FB, $FD, $DB, $F5, $50, $D5
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.byte $59, $D5, $FD, $D9, $BF, $FA, $DB
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.byte $BD, $DF, $A3,$55, $50, $06, $50, $55
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.byte $59, $05, $55, $DA, $5D, $DA, $5F
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.byte $A3,$FF, $5F, $FF, $DF, $5D, $05, $5A,$5A
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.byte $8F, $5D, $5A, $5D, $5B, $5D, $DF
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.byte $BF, $5D, $FF, $DF, $5D, $FB, $DF
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.byte $FD, $55,$55, $00, $50, $05, $75, $05
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.byte $55, $05, $55,$55, $DD, $BA, $DD, $5A
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.byte $FF,$FF, $DF, $BF, $DA, $5D, $80, $55,$55
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.byte $85, $58, $05, $10, $05, $55, $51
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.byte $55, $00, $55, $05, $FD, $DF, $FD
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.byte $DD, $5B, $58, $55, $00,$00, $50, $02
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.byte $20, $05, $00, $55, $5A,$5A, $DF, $5A
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.byte $5D, $FF,$FF, $FA, $5F, $FD, $D5, $F5
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.byte $58, $5B, $55,$55, $15, $80, $58, $51
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.byte $55, $58, $85, $B0, $5A, $FF, $FD
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.byte $DF, $5D, $55, $58, $55, $50, $05
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.byte $50, $05, $00, $50, $05, $50, $5F
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.byte $DD, $5A, $F5, $FF,$FF, $5F,$5F, $A4,$FF, $FA
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.byte $FD, $FA,$FA, $F5, $FD, $FB, $55, $D5
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.byte $F5, $F8, $FB, $DD, $FF, $DD, $5A
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.byte $59, $A3,$55, $00, $55, $00, $55, $00
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.byte $55, $15, $00, $FD, $5A, $FA, $A4,$FF
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.byte $F5,$F5, $A4,$5A, $5F, $BF, $A3,$5F, $A5,$FF, $FD
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.byte $FF, $DF, $5D, $55, $DA, $55, $B8
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.byte $FA,$FA, $F5,$F5, $F7, $55,$55, $50, $55,$55, $AC,$FF
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.byte $FA,$FA, $A3,$F5, $B5, $A4,$5A, $A3,$5F, $FA, $DD
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.byte $5A, $F5, $A0,$12,$FF, $CF, $AF,$FF, $FA, $F5
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.byte $F0, $F5, $AF,$FF, $CF, $FF, $9F, $A3,$9C
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.byte $FC, $FF,$FF, $C9, $CF, $C9, $FF, $C9
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.byte $CF, $C9, $FF, $C9, $CF, $C9, $FF
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.byte $C9, $A3,$FF, $C9, $CF, $A4,$FF, $C9, $FF
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.byte $C9, $A3,$FF, $9F, $A3,$9C, $FC, $A5,$F2, $FF,$FF
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.byte $F6, $FF, $F6, $FF, $F6, $A3,$FF, $F6
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.byte $A3,$FF, $F6, $A3,$FF, $F6, $A5,$FF, $F6, $FF
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.byte $F6, $A3,$FF, $A5,$F2
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.byte $A1
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apple_high: .byte $28 ; ysize=48
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.byte $A8,$FF, $5F, $8F, $5F, $A5,$5A, $8F, $BA
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.byte $8F, $5A, $A3,$5F, $8F, $5F, $8F, $5F
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.byte $DF, $5F, $A0,$12,$FF, $DD, $5F, $5D, $5F
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.byte $9D, $5A, $5D, $5B, $9D, $FA, $5D
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.byte $FA,$FA, $D5, $FD, $D5, $55, $DD, $5A
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.byte $55,$55, $85, $A0,$12,$FF, $5D, $55, $95, $0D
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.byte $0A,$0A, $5A, $5D, $5A,$5A, $5B, $55, $05
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.byte $5A, $59, $B5, $DF, $FF, $DF, $58
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.byte $85, $58, $A0,$12,$FF, $5D, $55,$55, $50, $00
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.byte $55, $7A, $A3,$5A, $A4,$55, $00, $55, $DF
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.byte $DD, $5F, $D9, $55, $5A,$5A, $A0,$11,$FF, $DF
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.byte $5D, $00, $45, $05, $55, $A3,$5A, $55,$55
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.byte $05, $55, $05, $50, $55, $5D, $FF
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.byte $DA, $59, $55, $88, $5A, $A0,$11,$FF, $5F
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.byte $DD, $00, $50, $05, $55, $05, $65
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.byte $55,$55, $05, $50, $55, $05, $50, $55
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.byte $5F, $FD, $5A, $55, $85, $58, $55
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.byte $A0,$11,$FF, $DF, $5D, $50, $00, $55, $00
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.byte $45, $55, $05, $50, $55,$55, $00, $85
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.byte $55,$55, $5F, $FD, $DA, $55,$55, $58, $55
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.byte $A0,$12,$FF, $5A, $54, $40, $05, $40, $05
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.byte $50, $A3,$55, $05, $50, $55, $05, $B5
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.byte $DA, $FF, $FD, $15, $55, $88, $55
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.byte $5F, $A0,$11,$FF, $FA, $05, $50, $06, $60
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.byte $04, $55, $50, $05, $54, $55, $50
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.byte $85, $05, $BA, $DA, $FF, $DD, $55
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.byte $B5, $88, $55, $5F,$5F, $DF, $5F, $DF
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.byte $5F, $DF, $5F,$5F, $A8,$FF, $FA, $F5, $05
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.byte $40, $05, $50, $55, $05, $50, $45
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.byte $00, $55, $00, $55, $05, $55, $BA
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.byte $DD, $FF, $85, $58, $80, $B5, $DD
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.byte $9A, $5D, $5B, $DA, $5F, $5A, $DA
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.byte $5A, $A9,$FF, $5D, $85, $50, $00, $55
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.byte $56, $50, $05, $40, $05, $50, $05
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.byte $50, $00, $55, $BA, $DF, $5D, $D5
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.byte $5A,$5A, $DD, $5A, $FD, $5A,$5A, $DD, $5B
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.byte $9A, $DD, $55, $A9,$FF, $DD, $5A, $5D
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.byte $A3,$55, $D5, $50, $55, $50, $55, $50,$50
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.byte $85, $5A,$5A, $FF, $FD, $55, $50, $00
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.byte $55, $00, $05, $55, $05, $5D, $5A
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.byte $DA, $58, $55, $A8,$FF, $DF, $5D, $5B
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.byte $5D, $5B, $5D, $5B, $FD, $D5, $F8
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.byte $D5,$D5, $B8, $D5, $BB, $D8, $5B, $DD
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.byte $DF, $55, $00,$00, $55, $20, $00, $55
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.byte $00, $85, $5A, $59, $5A, $55, $A7,$FF
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.byte $BF, $DD, $FB, $5D, $FA, $DF, $59
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.byte $F5, $55, $D9, $55, $B5, $D5, $B5
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.byte $5D, $5B, $8D, $5F, $5D, $5A, $A3,$55
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.byte $05, $50, $00, $55, $00, $55, $D9
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.byte $5A, $55,$55, $A6,$FF, $DF, $FD, $FB, $FD
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.byte $DA, $FF, $DD, $5A, $B5, $D8, $A4,$55
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.byte $FF, $5A, $DF, $DD, $5F, $DD, $5A
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.byte $55,$55, $07, $50, $25, $50, $05, $BD
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.byte $55, $5D, $5A,$5A, $55, $A5,$FF, $DF, $BD
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.byte $FA, $5F, $8A, $1D, $5A, $5F,$5F, $FF
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.byte $DF, $FF, $5F, $FF, $DA, $FB, $FD
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.byte $FA, $FF, $FD, $FA, $55,$55, $A6,$05, $55,$55
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.byte $5A, $5B, $5A,$5A, $A4,$FF, $FD, $FB, $5D
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.byte $5B, $08, $15, $00, $55, $50, $89
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.byte $50, $85, $08, $55, $85, $5D, $5B
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.byte $DD, $BA, $FF, $5A,$5A, $55,$55, $50, $02
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.byte $00, $55, $00, $55, $00, $55, $BA
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.byte $DD, $5A,$5A, $5F, $FF, $BF, $DD, $FF
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.byte $DA, $BB, $55, $8A, $50, $0B, $88
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.byte $A4,$55, $00, $55,$55, $59, $D5, $BB, $DD
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.byte $BB, $A4,$55, $A3,$00, $25, $50, $05, $50
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.byte $00, $FA, $5F, $5A, $5F, $FA, $FF,$FF
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.byte $FD, $FF,$FF, $FA, $FF, $F9, $F5, $D5
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.byte $F5, $55,$55, $80, $58, $51, $F5, $55
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.byte $DA, $BF, $FD, $FB, $5A, $55, $85
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.byte $55,$55, $57, $70, $00, $27, $00, $55
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.byte $90, $55, $FB, $5A, $55, $A4,$FF, $55,$55
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.byte $5A,$5A, $A5,$5F, $FD, $A3,$FF, $FB, $FD, $FF,$FF
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.byte $FB, $FD, $5B, $9A, $5D, $55,$55, $A3,$F5
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.byte $55, $50,$50, $55, $5A, $55, $5A, $FA
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.byte $A9,$FF, $FA, $A3,$F5, $FA, $5A, $55,$55, $A3,$5A
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.byte $A3,$5F, $DF, $BA, $5A,$5A, $55, $A9,$FF, $FA
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.byte $A0,$15,$FF, $FA,$FA, $F0, $F5,$F5, $A3,$FA, $A0,$10,$FF, $DF,$DF
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.byte $DC, $DF, $A3,$FF, $DF, $F1, $DF, $FF
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.byte $D1, $F1, $D1, $FF, $D1, $F1, $D1
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.byte $FF, $D1, $A3,$FF, $D1, $F1,$F1, $FF,$FF, $F1
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.byte $D1, $FF, $D1, $F1, $FF,$FF, $DF,$DF, $DC
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.byte $DF, $FF, $F1, $A3,$61, $F1, $FF,$FF, $24
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.byte $FF, $24, $FF, $24, $A3,$FF, $24, $A3,$FF
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.byte $24, $2F,$2F, $FF, $24, $2F,$2F, $FF,$FF, $2F
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.byte $24, $FF, $24, $2F, $FF,$FF, $F1, $A3,$61, $F1
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.byte $A1
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25
megamusic/delay_a.s
Normal file
25
megamusic/delay_a.s
Normal file
@ -0,0 +1,25 @@
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; From http://6502org.wikidot.com/software-delay
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; 25+A cycles (including JSR), 19 bytes (excluding JSR)
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;
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; The branches must not cross page boundaries!
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;
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; Cycles Accumulator Carry flag
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; 0 1 2 3 4 5 6 (hex) 0 1 2 3 4 5 6
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; jsr delay_a ; 6 6 6 6 6 6 6 00 01 02 03 04 05 06
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dly0: sbc #7
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delay_a:cmp #7 ; 2 2 2 2 2 2 2 00 01 02 03 04 05 06 0 0 0 0 0 0 0
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bcs dly0 ; 2 2 2 2 2 2 2 00 01 02 03 04 05 06 0 0 0 0 0 0 0
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lsr ; 2 2 2 2 2 2 2 00 00 01 01 02 02 03 0 1 0 1 0 1 0
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bcs dly1 ; 2 3 2 3 2 3 2 00 00 01 01 02 02 03 0 1 0 1 0 1 0
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dly1: beq dly2 ; 3 3 2 2 2 2 2 00 00 01 01 02 02 03 0 1 0 1 0 1 0
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lsr ; 2 2 2 2 2 00 00 01 01 01 1 1 0 0 1
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beq dly3 ; 3 3 2 2 2 00 00 01 01 01 1 1 0 0 1
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bcc dly3 ; 3 3 2 01 01 01 0 0 1
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dly2: bne dly3 ; 2 2 3 00 00 01 0 1 0
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dly3: rts ; 6 6 6 6 6 6 6 00 00 00 00 01 01 01 0 1 1 1 0 0 1
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;
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; Total cycles: 25 26 27 28 29 30 31
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222
megamusic/falling_apple.s
Normal file
222
megamusic/falling_apple.s
Normal file
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; Display Falling Apple II and message
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falling_apple:
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;===================
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; init screen
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jsr TEXT
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jsr HOME
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bit KEYRESET
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;===================
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; init vars
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lda #0
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sta DRAW_PAGE
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sta FRAME
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sta FRAMEH
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;=============================
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; Load graphic page0
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lda #$0c
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sta BASH
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lda #$00
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sta BASL ; load image to $c00
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lda #<apple_low
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sta GBASL
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lda #>apple_low
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sta GBASH
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jsr load_rle_gr
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|
||||
lda #4
|
||||
sta DRAW_PAGE
|
||||
|
||||
jsr gr_copy_to_current ; copy to page1
|
||||
|
||||
; GR part
|
||||
bit PAGE1
|
||||
bit LORES ; 4
|
||||
bit SET_GR ; 4
|
||||
bit FULLGR ; 4
|
||||
|
||||
;=============================
|
||||
; Load graphic page1
|
||||
|
||||
lda #$0c
|
||||
sta BASH
|
||||
lda #$00
|
||||
sta BASL ; load image to $c00
|
||||
|
||||
lda #<apple_high
|
||||
sta GBASL
|
||||
lda #>apple_high
|
||||
sta GBASH
|
||||
jsr load_rle_gr
|
||||
|
||||
lda #0
|
||||
sta DRAW_PAGE
|
||||
|
||||
jsr gr_copy_to_current
|
||||
|
||||
; GR part
|
||||
bit PAGE0
|
||||
|
||||
|
||||
;==============================
|
||||
; setup graphics for vapor lock
|
||||
;==============================
|
||||
|
||||
jsr vapor_lock ; 6
|
||||
|
||||
; vapor lock returns with us at beginning of hsync in line
|
||||
; 114 (7410 cycles), so with 5070 lines to go
|
||||
|
||||
jsr gr_copy_to_current ; 6+ 9292
|
||||
|
||||
; now we have 322 left
|
||||
|
||||
; GR part
|
||||
bit LORES ; 4
|
||||
bit SET_GR ; 4
|
||||
bit FULLGR ; 4
|
||||
|
||||
; 322 - 12 = 310
|
||||
; - 3 for jmp
|
||||
; 307
|
||||
|
||||
; Try X=9 Y=6 cycles=307
|
||||
|
||||
ldy #6 ; 2
|
||||
faloopA:ldx #9 ; 2
|
||||
faloopB:dex ; 2
|
||||
bne faloopB ; 2nt/3
|
||||
dey ; 2
|
||||
bne faloopA ; 2nt/3
|
||||
|
||||
jmp fa_display_loop ; 3
|
||||
.align $100
|
||||
|
||||
|
||||
;================================================
|
||||
; Display Loop
|
||||
;================================================
|
||||
; each scan line 65 cycles
|
||||
; 1 cycle each byte (40cycles) + 25 for horizontal
|
||||
; Total of 12480 cycles to draw screen
|
||||
; Vertical blank = 4550 cycles (70 scan lines)
|
||||
; Total of 17030 cycles to get back to where was
|
||||
|
||||
|
||||
; in the end, scrolling in was deemed to complex
|
||||
; what we do is load both to PAGE1/PAGE2 and then
|
||||
; slowly shift from all PAGE1 to PAGE1/PAGE every two scanlines
|
||||
|
||||
|
||||
fa_display_loop:
|
||||
|
||||
ldy #48 ; 2
|
||||
|
||||
outer_loop:
|
||||
|
||||
bit PAGE0 ; 4
|
||||
ldx #25 ; 130 cycles with PAGE0 ; 2
|
||||
page0_loop: ; delay 126+bit
|
||||
dex ; 2
|
||||
bne page0_loop ; 2/3
|
||||
|
||||
|
||||
bit PAGE1 ; 4
|
||||
ldx #23 ; 130 cycles with PAGE1 ; 2
|
||||
page1_loop: ; delay 115+(7 loop)+4 (bit)+4(extra)
|
||||
dex ; 2
|
||||
bne page1_loop ; 2/3
|
||||
|
||||
nop ; 2
|
||||
lda DRAW_PAGE ; 3
|
||||
|
||||
dey ; 2
|
||||
bne outer_loop ; 2/3
|
||||
|
||||
|
||||
|
||||
;======================================================
|
||||
; We have 4550 cycles in the vblank, use them wisely
|
||||
;======================================================
|
||||
; 4550 cycles
|
||||
; -1 (+1-2) from above
|
||||
; -25 inc framecount
|
||||
; -7 see if timeout
|
||||
; -10 keypress
|
||||
;================
|
||||
; 4507
|
||||
|
||||
; Try X=149 Y=6 cycles=4507
|
||||
|
||||
ldy #6 ; 2
|
||||
faloop1:ldx #149 ; 2
|
||||
faloop2:dex ; 2
|
||||
bne faloop2 ; 2nt/3
|
||||
dey ; 2
|
||||
bne faloop1 ; 2nt/3
|
||||
|
||||
|
||||
;========================
|
||||
; Increment Frame at 20Hz
|
||||
;========================
|
||||
; noinc: 13+12=25
|
||||
; inc: 13+12=25
|
||||
inc FRAME ; 5
|
||||
lda FRAME ; 3
|
||||
cmp #4 ; 2
|
||||
bne fa_noinc ; 3
|
||||
|
||||
; -1
|
||||
lda #0 ; 2
|
||||
sta FRAME ; 3
|
||||
inc FRAMEH ; 5
|
||||
jmp fa_doneinc ; 3
|
||||
fa_noinc:
|
||||
lda $0 ; 3
|
||||
lda $0 ; 3
|
||||
lda $0 ; 3
|
||||
lda $0 ; 3
|
||||
fa_doneinc:
|
||||
|
||||
|
||||
;====================
|
||||
; exit after 5s or so
|
||||
;====================
|
||||
; 7 cycles
|
||||
lda FRAMEH ; 3
|
||||
cmp #100 ; 2
|
||||
beq fa_done ; 3
|
||||
; -1
|
||||
|
||||
;=====================
|
||||
; check for keypress
|
||||
; 10 cycles
|
||||
|
||||
lda KEYPRESS ; 4
|
||||
bpl fa_no_keypress ; 3
|
||||
jmp fa_done
|
||||
fa_no_keypress:
|
||||
|
||||
jmp fa_display_loop ; 3
|
||||
|
||||
fa_done:
|
||||
bit KEYRESET ; clear keypress ; 4
|
||||
rts ; 6
|
||||
|
||||
|
||||
|
||||
|
||||
;.include "../asm_routines/gr_unrle.s"
|
||||
;.include "gr_copy.s"
|
||||
|
||||
;.include "apple_40_96.inc"
|
||||
|
||||
|
58
megamusic/gr_copy.s
Normal file
58
megamusic/gr_copy.s
Normal file
@ -0,0 +1,58 @@
|
||||
;=========================================================
|
||||
; gr_copy_to_current, 40x48 version
|
||||
;=========================================================
|
||||
; copy 0xc00 to DRAW_PAGE
|
||||
;
|
||||
; 45 + 2 + 120*(8*9 + 5) -1 + 6 = 9292
|
||||
.align $100
|
||||
gr_copy_to_current:
|
||||
|
||||
lda DRAW_PAGE ; 3
|
||||
clc ; 2
|
||||
adc #$4 ; 2
|
||||
sta gr_copy_line+5 ; 4
|
||||
sta gr_copy_line+11 ; 4
|
||||
adc #$1 ; 2
|
||||
sta gr_copy_line+17 ; 4
|
||||
sta gr_copy_line+23 ; 4
|
||||
adc #$1 ; 2
|
||||
sta gr_copy_line+29 ; 4
|
||||
sta gr_copy_line+35 ; 4
|
||||
adc #$1 ; 2
|
||||
sta gr_copy_line+41 ; 4
|
||||
sta gr_copy_line+47 ; 4
|
||||
;===========
|
||||
; 45
|
||||
|
||||
ldy #119 ; for early ones, copy 120 bytes ; 2
|
||||
|
||||
gr_copy_line:
|
||||
lda $C00,Y ; load a byte (self modified) ; 4
|
||||
sta $400,Y ; store a byte (self modified) ; 5
|
||||
|
||||
lda $C80,Y ; load a byte (self modified) ; 4
|
||||
sta $480,Y ; store a byte (self modified) ; 5
|
||||
|
||||
lda $D00,Y ; load a byte (self modified) ; 4
|
||||
sta $500,Y ; store a byte (self modified) ; 5
|
||||
|
||||
lda $D80,Y ; load a byte (self modified) ; 4
|
||||
sta $580,Y ; store a byte (self modified) ; 5
|
||||
|
||||
lda $E00,Y ; load a byte (self modified) ; 4
|
||||
sta $600,Y ; store a byte (self modified) ; 5
|
||||
|
||||
lda $E80,Y ; load a byte (self modified) ; 4
|
||||
sta $680,Y ; store a byte (self modified) ; 5
|
||||
|
||||
lda $F00,Y ; load a byte (self modified) ; 4
|
||||
sta $700,Y ; store a byte (self modified) ; 5
|
||||
|
||||
lda $F80,Y ; load a byte (self modified) ; 4
|
||||
sta $780,Y ; store a byte (self modified) ; 5
|
||||
|
||||
dey ; decrement pointer ; 2
|
||||
bpl gr_copy_line ; ; 2nt/3
|
||||
|
||||
rts ; 6
|
||||
|
44
megamusic/gr_hline.s
Normal file
44
megamusic/gr_hline.s
Normal file
@ -0,0 +1,44 @@
|
||||
;==================================
|
||||
; HLINE
|
||||
;==================================
|
||||
; Color in A
|
||||
; Y has which line
|
||||
; takes 435 cycles
|
||||
hline:
|
||||
pha ; 3
|
||||
ldx gr_offsets,y ; 4+
|
||||
stx hline_loop+1 ; self-modify code ; 4
|
||||
lda gr_offsets+1,y ; 4+
|
||||
clc ; 2
|
||||
adc DRAW_PAGE ; 3
|
||||
sta hline_loop+2 ; self-modify code ; 4
|
||||
pla ; 4
|
||||
ldx #39 ; 2
|
||||
;===========
|
||||
; 30
|
||||
hline_loop:
|
||||
sta $5d0,X ; 38 ; 5
|
||||
dex ; 2
|
||||
bpl hline_loop ; 2nt/3
|
||||
;===========
|
||||
; 40*(10)=400
|
||||
|
||||
; -1
|
||||
rts ; 6
|
||||
|
||||
;==========================
|
||||
; Clear gr screen
|
||||
;==========================
|
||||
; Color in A, Clears 0 to and including Y
|
||||
; clear_gr: takes 2+(48/2)*(6+435+7)+5 = 10759
|
||||
; cpl: takes (Y/2)*(6+435+7)+5 = ?
|
||||
clear_gr:
|
||||
ldy #46 ; 2
|
||||
clear_page_loop:
|
||||
jsr hline ; 6+435
|
||||
dey ; 2
|
||||
dey ; 2
|
||||
bpl clear_page_loop ; 2/3
|
||||
rts ; 6
|
||||
|
||||
|
4
megamusic/gr_offsets.s
Normal file
4
megamusic/gr_offsets.s
Normal file
@ -0,0 +1,4 @@
|
||||
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
|
115
megamusic/gr_unrle.s
Normal file
115
megamusic/gr_unrle.s
Normal file
@ -0,0 +1,115 @@
|
||||
;=================
|
||||
; load RLE image
|
||||
;=================
|
||||
; Output is BASH/BASL
|
||||
; Input is in GBASH/GBASL
|
||||
load_rle_gr:
|
||||
lda #$0
|
||||
tay ; init Y to 0
|
||||
sta TEMP ; stores the xcoord
|
||||
|
||||
sta CV ; ycoord=0
|
||||
|
||||
jsr load_and_increment ; load xsize
|
||||
sta CH
|
||||
|
||||
rle_loop:
|
||||
jsr load_and_increment
|
||||
|
||||
cmp #$A1 ; if 0xa1
|
||||
beq rle_done ; we are done
|
||||
|
||||
pha
|
||||
|
||||
and #$f0 ; mask
|
||||
cmp #$a0 ; see if special AX
|
||||
beq decompress_special
|
||||
|
||||
pla ; note, PLA sets flags!
|
||||
|
||||
ldx #$1 ; only want to print 1
|
||||
bne decompress_run
|
||||
|
||||
decompress_special:
|
||||
pla
|
||||
|
||||
and #$0f ; check if was A0
|
||||
|
||||
bne decompress_color ; if A0 need to read run, color
|
||||
|
||||
decompress_large:
|
||||
jsr load_and_increment ; get run length
|
||||
|
||||
decompress_color:
|
||||
tax ; put runlen into X
|
||||
jsr load_and_increment ; get color
|
||||
|
||||
decompress_run:
|
||||
rle_run_loop:
|
||||
sta (BASL),y ; write out the value
|
||||
inc BASL ; increment the pointer
|
||||
bne rle_skip3 ; if wrapped
|
||||
inc BASH ; then increment the high value
|
||||
|
||||
rle_skip3:
|
||||
pha ; store colore for later
|
||||
|
||||
inc TEMP ; increment the X value
|
||||
lda TEMP
|
||||
cmp CH ; compare against the image width
|
||||
bcc rle_not_eol ; if less then keep going
|
||||
|
||||
lda BASL ; cheat to avoid a 16-bit add
|
||||
cmp #$a7 ; we are adding 0x58 to get
|
||||
bcc rle_add_skip ; to the next line
|
||||
inc BASH
|
||||
rle_add_skip:
|
||||
clc
|
||||
adc #$58 ; actually do the 0x58 add
|
||||
sta BASL ; and store it back
|
||||
|
||||
inc CV ; add 2 to ypos
|
||||
inc CV ; each "line" is two high
|
||||
|
||||
lda CV ; load value
|
||||
cmp #15 ; if it's greater than 14 it wraps
|
||||
bcc rle_no_wrap ; Thanks Woz
|
||||
|
||||
lda #$0 ; we wrapped, so set to zero
|
||||
sta CV
|
||||
|
||||
; when wrapping have to sub 0x3d8
|
||||
sec ; this is a 16-bit subtract routine
|
||||
lda BASL
|
||||
sbc #$d8 ; LSB
|
||||
sta BASL
|
||||
lda BASH ; MSB
|
||||
sbc #$3 ;
|
||||
sta BASH
|
||||
|
||||
rle_no_wrap:
|
||||
lda #$0 ; set X value back to zero
|
||||
sta TEMP
|
||||
|
||||
rle_not_eol:
|
||||
pla ; restore color
|
||||
dex
|
||||
bne rle_run_loop ; if not zero, keep looping
|
||||
beq rle_loop ; and branch always
|
||||
|
||||
rle_done:
|
||||
lda #$15 ; move the cursor somewhere sane
|
||||
sta CV
|
||||
rts
|
||||
|
||||
|
||||
load_and_increment:
|
||||
lda (GBASL),y ; load value ; 5?
|
||||
inc GBASL ; 5?
|
||||
bne lskip2 ; 2nt/3
|
||||
inc GBASH ; 5?
|
||||
lskip2:
|
||||
rts ; 6
|
||||
|
||||
|
||||
|
84
megamusic/hardware.inc
Normal file
84
megamusic/hardware.inc
Normal file
@ -0,0 +1,84 @@
|
||||
;; HARDWARE LOCATIONS
|
||||
|
||||
KEYPRESS = $C000
|
||||
KEYRESET = $C010
|
||||
|
||||
;; SOFT SWITCHES
|
||||
CLR80COL = $C000 ; PAGE0/PAGE1 normal
|
||||
SET80COL = $C001 ; PAGE0/PAGE1 switches PAGE0 in Aux instead
|
||||
EIGHTYCOLOFF = $C00C
|
||||
EIGHTYCOLON = $C00D
|
||||
SPEAKER = $C030
|
||||
SET_GR = $C050
|
||||
SET_TEXT = $C051
|
||||
FULLGR = $C052
|
||||
TEXTGR = $C053
|
||||
PAGE0 = $C054
|
||||
PAGE1 = $C055
|
||||
LORES = $C056 ; Enable LORES graphics
|
||||
HIRES = $C057 ; Enable HIRES graphics
|
||||
AN3 = $C05E ; Annunciator 3
|
||||
|
||||
PADDLE_BUTTON0 = $C061
|
||||
PADDL0 = $C064
|
||||
PTRIG = $C070
|
||||
|
||||
;; BASIC ROUTINES
|
||||
|
||||
NORMAL = $F273
|
||||
|
||||
;; MONITOR ROUTINES
|
||||
|
||||
HLINE = $F819 ;; HLINE Y,$2C at A
|
||||
VLINE = $F828 ;; VLINE A,$2D at Y
|
||||
CLRSCR = $F832 ;; Clear low-res screen
|
||||
CLRTOP = $F836 ;; clear only top of low-res screen
|
||||
SETCOL = $F864 ;; COLOR=A
|
||||
TEXT = $FB36
|
||||
TABV = $FB5B ;; VTAB to A
|
||||
BASCALC = $FBC1 ;;
|
||||
VTAB = $FC22 ;; VTAB to CV
|
||||
HOME = $FC58 ;; Clear the text screen
|
||||
WAIT = $FCA8 ;; delay 1/2(26+27A+5A^2) us
|
||||
SETINV = $FE80 ;; INVERSE
|
||||
SETNORM = $FE84 ;; NORMAL
|
||||
COUT = $FDED ;; output A to screen
|
||||
COUT1 = $FDF0 ;; output A to screen
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
COLOR_BLACK = 0
|
||||
COLOR_RED = 1
|
||||
COLOR_DARKBLUE = 2
|
||||
COLOR_PURPLE = 3
|
||||
COLOR_DARKGREEN = 4
|
||||
COLOR_GREY = 5
|
||||
COLOR_MEDIUMBLUE = 6
|
||||
COLOR_LIGHTBLUE = 7
|
||||
COLOR_BROWN = 8
|
||||
COLOR_ORANGE = 9
|
||||
COLOR_GREY2 = 10
|
||||
COLOR_PINK = 11
|
||||
COLOR_LIGHTGREEN = 12
|
||||
COLOR_YELLOW = 13
|
||||
COLOR_AQUA = 14
|
||||
COLOR_WHITE = 15
|
||||
|
||||
COLOR_BOTH_BLACK = $00
|
||||
COLOR_BOTH_RED = $11
|
||||
COLOR_BOTH_DARKBLUE = $22
|
||||
COLOR_BOTH_DARKGREEN = $44
|
||||
COLOR_BOTH_GREY = $55
|
||||
COLOR_BOTH_MEDIUMBLUE = $66
|
||||
COLOR_BOTH_LIGHTBLUE = $77
|
||||
COLOR_BOTH_BROWN = $88
|
||||
COLOR_BOTH_ORANGE = $99
|
||||
COLOR_BOTH_PINK = $BB
|
||||
COLOR_BOTH_LIGHTGREEN = $CC
|
||||
COLOR_BOTH_YELLOW = $DD
|
||||
COLOR_BOTH_AQUA = $EE
|
||||
COLOR_BOTH_WHITE = $FF
|
||||
|
515
megamusic/megaload.s
Normal file
515
megamusic/megaload.s
Normal file
@ -0,0 +1,515 @@
|
||||
; read any file slot 6 version
|
||||
; based on FASTLD6 and RTS copyright (c) Peter Ferrie 2011-2013,2018
|
||||
|
||||
; TODO:
|
||||
; non-slot6? self modfiy code?
|
||||
|
||||
adrlo = $26 ; constant from boot prom
|
||||
adrhi = $27 ; constant from boot prom
|
||||
tmpsec = $3c ; constant from boot prom
|
||||
reqsec = $3d ; constant from boot prom
|
||||
curtrk = $40
|
||||
sizelo = $44
|
||||
sizehi = $45
|
||||
secsize = $46
|
||||
TEMPY = $fa
|
||||
namlo = $fb
|
||||
namhi = $fc
|
||||
step = $fd ; state for stepper motor
|
||||
tmptrk = $fe ; temporary copy of current track
|
||||
phase = $ff ; current phase for /seek
|
||||
|
||||
dirbuf = $1e00 ; note, don't put this immediately below
|
||||
; the value being read as destaddr-4
|
||||
; is temporarily overwritten during read
|
||||
; process
|
||||
|
||||
|
||||
; note also, can't load file bigger than $8000 (32k) in size?
|
||||
; seems to break things?
|
||||
|
||||
start:
|
||||
jsr init ; unhook DOS, init nibble table
|
||||
|
||||
; open and read a file
|
||||
lda #<megademo_filename
|
||||
sta namlo
|
||||
lda #>megademo_filename
|
||||
sta namhi
|
||||
jsr opendir ; open and read entire file into memory
|
||||
|
||||
; open and read a file
|
||||
; lda #<c64_filename
|
||||
; sta namlo
|
||||
; lda #>c64_filename
|
||||
; sta namhi
|
||||
; jsr opendir ; open and read entire file into memory
|
||||
|
||||
jmp $4000 ; jump to entry point
|
||||
|
||||
|
||||
; filename to open is 30-character Apple text:
|
||||
megademo_filename: ;.byte "MEGAMUSIC "
|
||||
.byte 'M'|$80,'E'|$80,'G'|$80,'A'|$80,'M'|$80,'U'|$80,'S'|$80,'I'|$80
|
||||
.byte 'C'|$80,$A0,$A0,$A0,$A0,$A0,$A0,$A0
|
||||
.byte $A0,$A0,$A0,$A0,$A0,$A0,$A0,$A0
|
||||
.byte $A0,$A0,$A0,$A0,$A0,$A0
|
||||
|
||||
c64_filename: ;.byte "C64.IMG "
|
||||
.byte 'C'|$80,'6'|$80,'4'|$80,'.'|$80,'I'|$80,'M'|$80,'G'|$80,$A0
|
||||
.byte $A0,$A0,$A0,$A0,$A0,$A0,$A0,$A0
|
||||
.byte $A0,$A0,$A0,$A0,$A0,$A0,$A0,$A0
|
||||
.byte $A0,$A0,$A0,$A0,$A0,$A0
|
||||
|
||||
|
||||
;unhook DOS and build nibble table
|
||||
|
||||
init:
|
||||
jsr $fe93 ; clear COUT
|
||||
jsr $fe89 ; clear KEYIN
|
||||
|
||||
;========================
|
||||
; Create nibble table
|
||||
; Note: the table starts 16 bytes in, and is sparse
|
||||
; so it doesn't entirely look like the DOS33 table at
|
||||
|
||||
ldy #0
|
||||
ldx #3
|
||||
L1: stx $3c ; store tempx (3?)
|
||||
txa ; a=x (a=3)
|
||||
asl ; a*=2 (a=6)
|
||||
bit $3c ; a&tempx, set N/V (a=6)
|
||||
beq L3 ; if 0, skip to L3
|
||||
ora $3c ; a|=tempx (a=7)
|
||||
eor #$ff ; a=~a (a=f8)
|
||||
and #$7e ; a&=0x7e 0111 1110 (a=78)
|
||||
L2: bcs L3 ; this set way back at asl??
|
||||
lsr ; a>>1 a=3c c=0
|
||||
; a=1e c=0
|
||||
; a=0f c=0
|
||||
; a=07 c=1
|
||||
bne L2 ; if a!=0 goto l2
|
||||
tya ; if a==0, a=y
|
||||
sta nibtbl, x ; write out to table
|
||||
iny ; increment y
|
||||
L3: inx ; increment x x=4, a=0f
|
||||
bpl L1 ; loop while high bit not set
|
||||
|
||||
rts
|
||||
|
||||
;===========================
|
||||
; opendir
|
||||
;===========================
|
||||
|
||||
; turn on drive and read volume table of contents
|
||||
opendir:
|
||||
lda $c0e9 ; turn slot#6 drive on
|
||||
ldx #0
|
||||
stx adrlo ; zero out adrlo
|
||||
stx secsize ; zero out secsize
|
||||
lda #$11 ; a=$11 (VTOC)
|
||||
jsr readdirsec
|
||||
firstent:
|
||||
|
||||
lda dirbuf+1
|
||||
|
||||
; lock if entry not found
|
||||
entry_not_found:
|
||||
beq entry_not_found
|
||||
|
||||
; read directory sector
|
||||
|
||||
ldx dirbuf+2
|
||||
jsr seekread1
|
||||
ldy #7 ;number of directory entries in a sector
|
||||
ldx #$2b ;offset of filename in directory entry
|
||||
nextent:
|
||||
tya
|
||||
pha ; was **phy**
|
||||
txa
|
||||
pha ; was **phx**
|
||||
ldy #$1d
|
||||
|
||||
; match name backwards (slower but smaller)
|
||||
|
||||
L4:
|
||||
lda (namlo), y
|
||||
cmp dirbuf, x
|
||||
beq foundname
|
||||
pla
|
||||
|
||||
; move to next directory in this block, if possible
|
||||
|
||||
clc
|
||||
adc #$23
|
||||
tax
|
||||
pla
|
||||
tay ; was **ply**
|
||||
dey
|
||||
bne nextent
|
||||
beq firstent ; was **bra**
|
||||
|
||||
foundname:
|
||||
dex
|
||||
dey
|
||||
bpl L4
|
||||
pla
|
||||
tay ; was **ply**
|
||||
pla
|
||||
|
||||
; read track/sector list
|
||||
|
||||
lda dirbuf-32, y
|
||||
ldx dirbuf-31, y
|
||||
jsr seekread1
|
||||
|
||||
; read load offset and length info only, initially
|
||||
|
||||
lda #<filbuf
|
||||
sta adrlo
|
||||
lda #4
|
||||
sta secsize
|
||||
lda dirbuf+12
|
||||
ldx dirbuf+13
|
||||
ldy #>filbuf
|
||||
jsr seekread
|
||||
|
||||
; reduce load offset by 4, to account for offset and length
|
||||
|
||||
sec
|
||||
lda filbuf
|
||||
sbc #4
|
||||
sta adrlo
|
||||
|
||||
lda filbuf+1
|
||||
sbc #0
|
||||
sta adrhi
|
||||
|
||||
; save on stack bytes that will be overwritten by extra read
|
||||
|
||||
ldy #3
|
||||
L5:
|
||||
lda (adrlo), y
|
||||
pha
|
||||
dey
|
||||
bpl L5
|
||||
|
||||
lda adrhi
|
||||
pha
|
||||
lda adrlo
|
||||
pha
|
||||
|
||||
; increase load size by 4, to account for offst and length
|
||||
|
||||
lda filbuf+2
|
||||
adc #3
|
||||
sta sizelo
|
||||
sta secsize
|
||||
|
||||
lda filbuf+3
|
||||
adc #0
|
||||
sta sizehi
|
||||
beq readfirst
|
||||
ldy #0 ; was **stz secsize**
|
||||
sty secsize
|
||||
|
||||
readfirst:
|
||||
ldy #$0c
|
||||
|
||||
; read a file sector
|
||||
|
||||
readnext:
|
||||
lda dirbuf, y ; A = track
|
||||
ldx dirbuf+1, y ; x = sector
|
||||
sty TEMPY ; save t/s ptr ** was phy **
|
||||
jsr seekread1
|
||||
ldy TEMPY ; restore t/s ptr ** was ply **
|
||||
|
||||
; if low count is non-zero then we are done
|
||||
; (can happen only for partial last block)
|
||||
|
||||
lda secsize
|
||||
bne readdone
|
||||
|
||||
; continue if more than $100 bytes left
|
||||
|
||||
dec sizehi
|
||||
bne L6
|
||||
|
||||
; set read size to min(length, $100)
|
||||
|
||||
lda sizelo
|
||||
beq readdone
|
||||
sta secsize
|
||||
L6:
|
||||
inc adrhi
|
||||
iny
|
||||
iny
|
||||
bne readnext
|
||||
|
||||
; save current address for after t/s read
|
||||
|
||||
lda adrhi
|
||||
pha
|
||||
lda adrlo
|
||||
pha
|
||||
lda #0
|
||||
sta adrlo ; was **stz adrlo**
|
||||
|
||||
; read next track/sector sector
|
||||
|
||||
lda dirbuf+1
|
||||
ldx dirbuf+2
|
||||
jsr readdirsec
|
||||
clc
|
||||
|
||||
; restore current address
|
||||
readdone:
|
||||
pla
|
||||
; sta adrhi
|
||||
; pla
|
||||
sta adrlo ; code originally had this backwards
|
||||
pla
|
||||
sta adrhi
|
||||
bcc readfirst
|
||||
|
||||
lda $c0e8
|
||||
|
||||
; restore from stack bytes that were overwritten by extra read
|
||||
|
||||
ldx #3
|
||||
ldy #0
|
||||
L7:
|
||||
pla
|
||||
sta (adrlo), y
|
||||
iny
|
||||
dex
|
||||
bpl L7
|
||||
rts
|
||||
|
||||
|
||||
;======================
|
||||
; readdirsec
|
||||
;======================
|
||||
; a = track?
|
||||
; x = sector?
|
||||
readdirsec:
|
||||
ldy #>dirbuf
|
||||
seekread:
|
||||
sty adrhi
|
||||
seekread1:
|
||||
sta phase
|
||||
lda sectbl, x
|
||||
sta reqsec
|
||||
jsr readadr
|
||||
|
||||
; if track does not match, then seek
|
||||
|
||||
; lda curtrk ; BUG fixed recently
|
||||
; cmp phase
|
||||
|
||||
cpx phase
|
||||
beq repeat_until_right_sector
|
||||
jsr seek
|
||||
|
||||
; [re-]read sector
|
||||
|
||||
re_read_addr:
|
||||
jsr readadr
|
||||
|
||||
repeat_until_right_sector:
|
||||
cmp reqsec
|
||||
bne re_read_addr
|
||||
|
||||
;==========================
|
||||
; read sector data
|
||||
;==========================
|
||||
;
|
||||
|
||||
readdata:
|
||||
ldy $c0ec ; read data until valid
|
||||
bpl readdata
|
||||
find_D5:
|
||||
cpy #$d5 ; if not D5, repeat
|
||||
bne readdata
|
||||
find_AA:
|
||||
ldy $c0ec ; read data until valid, should be AA
|
||||
bpl find_AA
|
||||
cpy #$aa ; we need Y=#$AA later
|
||||
bne find_D5
|
||||
find_AD:
|
||||
lda $c0ec ; read data until high bit set (valid)
|
||||
bpl find_AD
|
||||
eor #$ad ; should match $ad
|
||||
bne * ; lock if didn't find $ad (failure)
|
||||
L12:
|
||||
ldx $c0ec ; read data until high bit set (valid)
|
||||
bpl L12
|
||||
eor nibtbl-$80, x
|
||||
sta bit2tbl-$aa, y
|
||||
iny
|
||||
bne L12
|
||||
L13:
|
||||
ldx $c0ec ; read data until high bit set (valid)
|
||||
bpl L13
|
||||
eor nibtbl-$80, x
|
||||
sta (adrlo), y ; the real address
|
||||
iny
|
||||
cpy secsize
|
||||
bne L13
|
||||
ldy #0
|
||||
L14:
|
||||
ldx #$a9
|
||||
L15:
|
||||
inx
|
||||
beq L14
|
||||
lda (adrlo), y
|
||||
lsr bit2tbl-$aa, x
|
||||
rol
|
||||
lsr bit2tbl-$aa, x
|
||||
rol
|
||||
sta (adrlo), y
|
||||
iny
|
||||
cpy secsize
|
||||
bne L15
|
||||
rts
|
||||
|
||||
; no tricks here, just the regular stuff
|
||||
|
||||
;=================
|
||||
; readadr -- read address field
|
||||
;=================
|
||||
; Find address field, put track in cutrk, sector in tmpsec
|
||||
readadr:
|
||||
lda $c0ec ; read data until we find a $D5
|
||||
bpl readadr
|
||||
adr_d5:
|
||||
cmp #$d5
|
||||
bne readadr
|
||||
|
||||
adr_aa:
|
||||
lda $c0ec ; read data until we find a $AA
|
||||
bpl adr_aa
|
||||
cmp #$aa
|
||||
bne adr_d5
|
||||
|
||||
adr_96:
|
||||
lda $c0ec ; read data until we find a $96
|
||||
bpl adr_96
|
||||
cmp #$96
|
||||
bne adr_d5
|
||||
|
||||
ldy #3 ; three?
|
||||
; first read volume/volume
|
||||
; then track/track
|
||||
; then sector/sector?
|
||||
adr_read_two_bytes:
|
||||
sta curtrk ; store out current track
|
||||
tax
|
||||
L20:
|
||||
lda $c0ec ; read until full value
|
||||
bpl L20
|
||||
rol
|
||||
sta tmpsec
|
||||
L21:
|
||||
lda $c0ec ; read until full value
|
||||
bpl L21 ; sector value is (v1<<1)&v2????
|
||||
and tmpsec
|
||||
dey ; loop 3 times
|
||||
bne adr_read_two_bytes
|
||||
|
||||
seekret:
|
||||
rts ; return
|
||||
|
||||
;================
|
||||
; SEEK
|
||||
;================
|
||||
; current track in curtrk
|
||||
; desired track in phase
|
||||
|
||||
seek:
|
||||
asl curtrk ; multiply by 2
|
||||
asl phase ; multiply by 2
|
||||
lda #0
|
||||
sta step
|
||||
copy_cur:
|
||||
lda curtrk ; load current track
|
||||
sta tmptrk ; store as temptrk
|
||||
sec ; calc current-desired
|
||||
sbc phase
|
||||
beq seekret ; if they match, we are done!
|
||||
|
||||
bcs seek_neg ; if negative, skip ahead
|
||||
eor #$ff ; ones-complement the distance
|
||||
inc curtrk ; increment current (make it 2s comp?)
|
||||
bcc L114 ; skip ahead
|
||||
seek_neg:
|
||||
adc #$fe
|
||||
dec curtrk
|
||||
L114:
|
||||
cmp step
|
||||
bcc L115
|
||||
lda step
|
||||
L115:
|
||||
cmp #8
|
||||
bcs L116
|
||||
tay
|
||||
sec
|
||||
L116:
|
||||
lda curtrk
|
||||
ldx step1, y
|
||||
bne L118
|
||||
L117:
|
||||
clc
|
||||
lda tmptrk
|
||||
ldx step2, y
|
||||
L118:
|
||||
stx tmpsec
|
||||
and #3
|
||||
rol
|
||||
tax
|
||||
sta $c0e0, x
|
||||
L119:
|
||||
ldx #$13
|
||||
L120:
|
||||
dex
|
||||
bne L120
|
||||
dec tmpsec
|
||||
bne L119
|
||||
lsr
|
||||
bcs L117
|
||||
inc step
|
||||
bne copy_cur
|
||||
|
||||
|
||||
|
||||
step1: .byte $01, $30, $28, $24, $20, $1e, $1d, $1c
|
||||
step2: .byte $70, $2c, $26, $22, $1f, $1e, $1d, $1c
|
||||
|
||||
sectbl: .byte $00,$0d,$0b,$09,$07,$05,$03,$01,$0e,$0c,$0a,$08,$06,$04,$02,$0f
|
||||
|
||||
|
||||
; From $BA96 of DOS33
|
||||
nibtbl: .res 128 ; = *
|
||||
; .byte $00,$01,$98,$99,$02,$03,$9C,$04 ; $BA96 ; 00
|
||||
; .byte $05,$06,$A0,$A1,$A2,$A4,$A4,$A5 ; $BA9E ; 08
|
||||
; .byte $07,$08,$A8,$A9,$AA,$09,$0A,$0B ; $BAA6 ; 10
|
||||
; .byte $0C,$0D,$B0,$B1,$0E,$0F,$10,$11 ; $BAAE ; 18
|
||||
; .byte $12,$13,$B8,$14,$15,$16,$17,$18 ; $BAB6 ; 20
|
||||
; .byte $19,$1A,$C0,$C1,$C2,$C3,$C4,$C5 ; $BABE ; 28
|
||||
; .byte $C6,$C7,$C8,$C9,$CA,$1B,$CC,$1C ; $BAC6 ; 30
|
||||
; .byte $1D,$1E,$D0,$D1,$D2,$1E,$D4,$D5 ; $BACE ; 38
|
||||
; .byte $20,$21,$D8,$22,$23,$24,$25,$26 ; $BAD6 ; 40
|
||||
; .byte $27,$28,$E0,$E1,$E2,$E3,$E4,$29 ; $BADE ; 48
|
||||
; .byte $2A,$2B,$E8,$2C,$2D,$2E,$2F,$30 ; $BAE6 ; 50
|
||||
; .byte $31,$32,$F0,$F1,$33,$34,$35,$36 ; $BAEE ; 58
|
||||
; .byte $37,$38,$F8,$39,$3A,$3B,$3C,$3D ; $BAF6 ; 60
|
||||
; .byte $3E,$3F,$13,$00,$01,$02,$01,$00 ; $BAFE ; 68
|
||||
; .byte $00,$00,$00,$00,$00,$00,$00,$00
|
||||
; .byte $00,$00,$00,$00,$00,$00,$00,$00
|
||||
|
||||
|
||||
bit2tbl: .res 86 ; = nibtbl+128
|
||||
filbuf: .res 4 ; = bit2tbl+86
|
||||
;dataend = filbuf+4
|
||||
|
BIN
megamusic/megamusic.dsk
Normal file
BIN
megamusic/megamusic.dsk
Normal file
Binary file not shown.
85
megamusic/megamusic.s
Normal file
85
megamusic/megamusic.s
Normal file
@ -0,0 +1,85 @@
|
||||
; Apple II Megademo
|
||||
|
||||
; by deater (Vince Weaver) <vince@deater.net>
|
||||
|
||||
.include "zp.inc"
|
||||
.include "hardware.inc"
|
||||
|
||||
|
||||
megamusic_start: ; this should end up at $4000
|
||||
|
||||
;===================
|
||||
; set graphics mode
|
||||
;===================
|
||||
jsr HOME
|
||||
|
||||
; apple
|
||||
|
||||
jsr falling_apple
|
||||
|
||||
;==================
|
||||
; Game over
|
||||
;==================
|
||||
; we never get here
|
||||
game_over_man:
|
||||
jmp game_over_man
|
||||
|
||||
|
||||
; .include "lz4_decode.s"
|
||||
; .include "c64_opener.s"
|
||||
.include "falling_apple.s"
|
||||
.include "gr_unrle.s"
|
||||
.include "gr_copy.s"
|
||||
; .include "starring.s"
|
||||
; .include "starring_people.s"
|
||||
; .include "check_email.s"
|
||||
.align $100
|
||||
.include "gr_offsets.s"
|
||||
.include "gr_hline.s"
|
||||
.include "vapor_lock.s"
|
||||
.include "delay_a.s"
|
||||
; .include "wait_keypress.s"
|
||||
; .include "random16.s"
|
||||
.align $100
|
||||
; .include "fireworks.s"
|
||||
; .include "hgr.s"
|
||||
; .include "bird_mountain.s"
|
||||
; .include "move_letters.s"
|
||||
.align $100
|
||||
; .include "gr_putsprite.s"
|
||||
; .include "mode7.s"
|
||||
; .include "space_bars.s"
|
||||
; .include "takeoff.s"
|
||||
; .include "leaving.s"
|
||||
; .include "arrival.s"
|
||||
; .include "waterfall.s"
|
||||
; .include "text_print.s"
|
||||
.align $100
|
||||
; .include "screen_split.s"
|
||||
|
||||
;============================
|
||||
; Include Sprites
|
||||
;============================
|
||||
.align $100
|
||||
; .include "tfv_sprites.inc"
|
||||
; .include "mode7_sprites.inc"
|
||||
|
||||
;=================================
|
||||
; Include Text for Sliding Letters
|
||||
; *DONT CROSS PAGES*
|
||||
;=================================
|
||||
;.include "letters.s"
|
||||
|
||||
;============================
|
||||
; Include Lores Graphics
|
||||
; No Alignment Needed
|
||||
;============================
|
||||
|
||||
; falling_apple
|
||||
.include "apple_40_96.inc"
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
216
megamusic/vapor_lock.s
Normal file
216
megamusic/vapor_lock.s
Normal file
@ -0,0 +1,216 @@
|
||||
; This took a while to track down
|
||||
; On Apple II/II+ the horiz blanking addr are $1000 higher than on IIe
|
||||
; So on II+ were outside video area, so unlikely to be our set value
|
||||
; (unless I foolishly use $ff which some uninitialized mem is set to)
|
||||
; Lots of this color fiddling is to make sure you don't accidentally
|
||||
; get runs of colors on IIe due to the horiz blank
|
||||
|
||||
; 0-5 aqua 6-12 = grey, 13 - 20 = yellow, 21-23 = aqua rainbow 14
|
||||
;
|
||||
;
|
||||
;16 0 YA
|
||||
;17 1 YA
|
||||
;18 2 YA
|
||||
;19 3 YA
|
||||
;20 4 YA
|
||||
;21 5 AA
|
||||
;22 6 AG
|
||||
;23 7 AG
|
||||
;0 8 AG
|
||||
;1 9 AG
|
||||
;2 10 AG
|
||||
;3 11 AG
|
||||
;4 12 AG
|
||||
;5 13 AY ****
|
||||
;6 14 GY RAINBOW
|
||||
;7 15 GY
|
||||
;8 16 GY
|
||||
;9 17 GY
|
||||
;10 18 GY
|
||||
;11 19 GY
|
||||
;12 20 GY
|
||||
;13 21 YA
|
||||
;14 22 YA
|
||||
;15 23 YA
|
||||
|
||||
|
||||
|
||||
;==============================
|
||||
; setup graphics for vapor lock
|
||||
;==============================
|
||||
vapor_lock:
|
||||
|
||||
; Clear Page0
|
||||
lda #$0
|
||||
sta DRAW_PAGE
|
||||
lda #$ee ; full screen white $ff
|
||||
jsr clear_gr
|
||||
|
||||
lda #$dd
|
||||
ldy #40
|
||||
jsr clear_page_loop ; make top half grey2 $aa
|
||||
|
||||
lda #$aa
|
||||
ldy #24
|
||||
jsr clear_page_loop ; make top half grey2 $aa
|
||||
|
||||
lda #$ee
|
||||
ldy #10
|
||||
jsr clear_page_loop ; make top half grey2 $aa
|
||||
|
||||
; set up a rainbow to aid in exact lock
|
||||
|
||||
ldy #00
|
||||
rainbow_loop:
|
||||
tya
|
||||
sta $728+20,Y
|
||||
iny
|
||||
cpy #20
|
||||
bne rainbow_loop
|
||||
|
||||
;btt:
|
||||
; jmp btt
|
||||
|
||||
|
||||
;=====================================================
|
||||
; attempt vapor lock
|
||||
; by reading the "floating bus" we can see most recently
|
||||
; written value of the display
|
||||
;=====================================================
|
||||
; See:
|
||||
; Have an Apple Split by Bob Bishop
|
||||
; Softalk, October 1982
|
||||
|
||||
; Challenges: each scan line scans 40 bytes.
|
||||
; The blanking happens at the *beginning*
|
||||
; So 65 bytes are scanned, starting at adress of the line - 25
|
||||
|
||||
; the scan takes 8 cycles, look for 4 repeats of the value
|
||||
; to avoid false positive found if the horiz blanking is mirroring
|
||||
; the line (max 3 repeats in that case)
|
||||
|
||||
vapor_lock_loop:
|
||||
|
||||
; first make sure we have a full line of $aa
|
||||
|
||||
lda #$aa ; 2
|
||||
zxloop:
|
||||
ldx #$04 ; 2
|
||||
wiloop:
|
||||
cmp $C051 ; read the floating bus ; 4
|
||||
bne zxloop ; if not, start from scratch ; 2/3
|
||||
dex ; we were, dec ; 2
|
||||
bne wiloop ; if not 4 of them, restart ; 3/2
|
||||
|
||||
; if we get here we read 4 proper pixels, 11 apart (2+4+2+2+3)
|
||||
; 0 11 22 33, clock at 34
|
||||
; 1 12 23 34, clock at 35
|
||||
; 2 13 24 35, clock at 36
|
||||
; 3 14 25 36, clock at 37
|
||||
; 4 15 26 37, clock at 38
|
||||
; 5 16 27 38, clock at 39
|
||||
; 6 17 28 39, clock at 40
|
||||
|
||||
|
||||
; X X X X
|
||||
; X X X X
|
||||
; X X X X
|
||||
; X X X X
|
||||
; X X X X
|
||||
; X X X X
|
||||
; X X X X
|
||||
; 0123456789012345678901234 0123456789012345678901234567890123456789
|
||||
; 1 2 1 2 3
|
||||
; hsync pixels
|
||||
; XXXXXXXXXXXXXXXXXXXXXXXXX 4444444444444444444444444444440123456789
|
||||
|
||||
; now look for the color change that
|
||||
; happens at line 13*8 = 104
|
||||
|
||||
lda #$dd ; 2
|
||||
zloop:
|
||||
ldx #$04 ; 2
|
||||
qloop:
|
||||
cmp $C051 ; read floating bus ; 4
|
||||
bne zloop ; 2/3
|
||||
dex ; 2
|
||||
bne qloop ; 3/2
|
||||
;============
|
||||
; 11
|
||||
|
||||
; Found it!
|
||||
; if we get here we read 4 proper pixels, 11 apart (2+4+2+2+3)
|
||||
; 0 11 22 33, clock at 34
|
||||
; 1 12 23 34, clock at 35
|
||||
; 2 13 24 35, clock at 36
|
||||
; 3 14 25 36, clock at 37
|
||||
; 4 15 26 37, clock at 38
|
||||
; 5 16 27 38, clock at 39
|
||||
; 6 17 28 39, clock at 40
|
||||
|
||||
|
||||
; In theory near end of line 104
|
||||
|
||||
; now skip ahead 8 lines and read from the rainbow pattern we set
|
||||
; up to find our exact location
|
||||
|
||||
; delay 65 * 8 = 520
|
||||
; we back off a few to make sure we're not in the horiz blank
|
||||
; try to delay 510
|
||||
|
||||
lda #230 ; 2
|
||||
jsr delay_a ; delay 25+230 = 255
|
||||
|
||||
lda #226 ; 2
|
||||
jsr delay_a ; delay 25+226 = 251
|
||||
|
||||
|
||||
; now near end of line 112
|
||||
|
||||
|
||||
lda $C051 ; 4
|
||||
;kbb:
|
||||
; jmp kbb
|
||||
|
||||
; we are in theory on line $728 = 14*8 = 112
|
||||
; so 112*65 = 7280 cycles from start
|
||||
|
||||
; we are actualy 25+20+A pixels in
|
||||
; 7325+A
|
||||
|
||||
; Our goal is line 114 at 7410 cycles
|
||||
; 7410 - 7325 = 85
|
||||
|
||||
; so kill 85-A cycles
|
||||
; -6 to do subtraction
|
||||
; -6 for rts
|
||||
; -25 for delay_a overhead
|
||||
|
||||
eor #$ff ; 2
|
||||
sec ; 2
|
||||
adc #48 ; 2
|
||||
|
||||
jsr delay_a ; should total 48 cycles
|
||||
|
||||
|
||||
done_vapor_lock:
|
||||
rts ; 6
|
||||
|
||||
|
||||
|
||||
|
||||
; Some random related work
|
||||
; Docs:
|
||||
; Lancaster
|
||||
; Bishop
|
||||
; Sather
|
||||
|
||||
; Vaguely relevant but no help with the Apple II+ issue
|
||||
;
|
||||
; Eamon: Screen display and timing synchronization
|
||||
; on the Apple IIe and Apple IIgs
|
||||
;
|
||||
; Adams: Visually presented verbal stimuli by assembly
|
||||
; language on the Apple II computer.
|
||||
; Cavanagh and Anstis: Visual psychophysics on the
|
||||
; Apple II: Getting started
|
166
megamusic/zp.inc
Normal file
166
megamusic/zp.inc
Normal file
@ -0,0 +1,166 @@
|
||||
;; Zero Page
|
||||
|
||||
FRAMEBUFFER = $00 ; $00 - $0F
|
||||
|
||||
;; LZ4 addresses
|
||||
|
||||
LZ4_SRC = $00
|
||||
LZ4_DST = $02
|
||||
LZ4_END = $04
|
||||
COUNT = $06
|
||||
DELTA = $08
|
||||
|
||||
;; Zero page monitor routines addresses
|
||||
|
||||
WNDLFT = $20
|
||||
WNDWDTH = $21
|
||||
WNDTOP = $22
|
||||
WNDBTM = $23
|
||||
CH = $24
|
||||
CV = $25
|
||||
GBASL = $26
|
||||
GBASH = $27
|
||||
BASL = $28
|
||||
BASH = $29
|
||||
H2 = $2C
|
||||
V2 = $2D
|
||||
MASK = $2E
|
||||
COLOR = $30
|
||||
;INVFLG = $32
|
||||
|
||||
; dos33 zero page = 26-2f, 35-38, 3e 3f 40-4d
|
||||
; overlap applesoft 67-6a,6f,70,af,b0,ca-cd,d8
|
||||
|
||||
|
||||
; DOS33: Confirmed kills $68
|
||||
|
||||
RWTSL = $60
|
||||
RWTSH = $61
|
||||
DOSBUFL = $62
|
||||
DOSBUFH = $63
|
||||
FILEML = $64
|
||||
FILEMH = $65
|
||||
|
||||
|
||||
FRAME = $60
|
||||
FRAMEH = $61
|
||||
WAITING = $62
|
||||
LETTERL = $63
|
||||
LETTERH = $64
|
||||
LETTERX = $65
|
||||
LETTERY = $66
|
||||
LETTERD = $67
|
||||
LETTER = $68
|
||||
BLARGH = $69
|
||||
|
||||
;FACTOR_I = $66
|
||||
;FACTOR_F = $67
|
||||
;DX_I = $68
|
||||
;DX_F = $69
|
||||
;SPACEX_I = $6A
|
||||
;SPACEX_F = $6B
|
||||
;CX_I = $6C
|
||||
;CX_F = $6D
|
||||
;DY_I = $6E
|
||||
;DY_F = $6F
|
||||
|
||||
|
||||
ZPOS = $78
|
||||
|
||||
REGISTER_DUMP = $70
|
||||
A_FINE_TONE = $70
|
||||
A_COARSE_TONE = $71
|
||||
B_FINE_TONE = $72
|
||||
B_COARSE_TONE = $73
|
||||
C_FINE_TONE = $74
|
||||
C_COARSE_TONE = $75
|
||||
NOISE = $76
|
||||
ENABLE = $77
|
||||
A_VOLUME = $78
|
||||
B_VOLUME = $79
|
||||
C_VOLUME = $7A
|
||||
ENVELOPE_FINE = $7B
|
||||
ENVELOPE_COARSE = $7C
|
||||
ENVELOPE_SHAPE = $7D
|
||||
|
||||
|
||||
COPY_OFFSET = $7E
|
||||
DECODER_STATE = $7F
|
||||
|
||||
|
||||
REGISTER_DUMP2 = $80
|
||||
A_FINE_TONE2 = $80
|
||||
A_COARSE_TONE2 = $81
|
||||
B_FINE_TONE2 = $82
|
||||
B_COARSE_TONE2 = $83
|
||||
C_FINE_TONE2 = $84
|
||||
C_COARSE_TONE2 = $85
|
||||
NOISE2 = $86
|
||||
ENABLE2 = $87
|
||||
A_VOLUME2 = $88
|
||||
B_VOLUME2 = $89
|
||||
C_VOLUME2 = $8A
|
||||
ENVELOPE_FINE2 = $8B
|
||||
ENVELOPE_COARS2 = $8C
|
||||
ENVELOPE_SHAPE2 = $8D
|
||||
LYRICSL = $8E
|
||||
LYRICSH = $8F
|
||||
|
||||
FRAME_COUNT = $90
|
||||
MB_VALUE = $91
|
||||
MB_ADDRL = $91
|
||||
MB_ADDRH = $92
|
||||
DONE_PLAYING = $93
|
||||
MB_CHUNK_OFFSET = $94
|
||||
CHUNKSIZE = $95
|
||||
LZ4_DONE = $96
|
||||
DECODE_ERROR = $97
|
||||
COPY_TIME = $98
|
||||
DECOMPRESS_TIME = $99
|
||||
TIME_TAKEN = $9A
|
||||
LYRICS_ACTIVE = $9B
|
||||
;FORTYCOL = $9C
|
||||
CURSOR = $9D
|
||||
|
||||
; More zero-page addresses
|
||||
; we try not to conflict with anything DOS, MONITOR or BASIC related
|
||||
|
||||
;COLOR1 = $E0
|
||||
;COLOR2 = $E1
|
||||
;MATCH = $E2
|
||||
XX = $E3
|
||||
YY = $E4
|
||||
HGR_COLOR = $E4
|
||||
;SHIPY = $E4
|
||||
;YADD = $E5
|
||||
;LOOP = $E6
|
||||
;MEMPTRL = $E7
|
||||
;MEMPTRH = $E8
|
||||
;NAMEL = $E9
|
||||
;NAMEH = $EA
|
||||
;NAMEX = $EB
|
||||
;CHAR = $EC
|
||||
STATE = $ED
|
||||
DISP_PAGE = $ED
|
||||
DRAW_PAGE = $EE
|
||||
OFFSET = $EF
|
||||
|
||||
;FIRST = $F0
|
||||
|
||||
LASTKEY = $F1
|
||||
PADDLE_STATUS = $F2
|
||||
|
||||
SPRITETEMP = $F2
|
||||
XPOS = $F3
|
||||
YPOS = $F4
|
||||
TEMP = $FA
|
||||
TEMPY = $FB
|
||||
INL = $FC
|
||||
INH = $FD
|
||||
OUTL = $FE
|
||||
OUTH = $FF
|
||||
|
||||
|
||||
|
||||
|
||||
|
Loading…
Reference in New Issue
Block a user