music: add tracker3
This commit is contained in:
Vince Weaver
parent
8769952043
commit
105af64ded
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@ -0,0 +1,62 @@
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include ../../Makefile.inc
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DOS33 = ../../utils/dos33fs-utils/dos33
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EMPTY_DISK = ../../empty_disk
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HGR2PNG = ../../utils/hgr-utils/png2hgr
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LINKER_SCRIPTS = ../../linker_scripts
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TOKENIZE = ../../utils/asoft_basic-utils/tokenize_asoft
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all: tiny_tracker3.dsk
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####
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tiny_tracker3.dsk: HELLO D2
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cp $(EMPTY_DISK)/empty.dsk ./tiny_tracker3.dsk
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$(DOS33) -y tiny_tracker3.dsk SAVE A HELLO
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$(DOS33) -y tiny_tracker3.dsk -t BIN -a 0x6000 BSAVE D2
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####
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HELLO: hello.bas
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$(TOKENIZE) < hello.bas > HELLO
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####
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peasant_music.s: peasant.txt text_to_tiny
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./text_to_tiny peasant.txt > peasant_music.s
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####
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mA2E_2.s: mA2E_2.txt text_to_tiny
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./text_to_tiny mA2E_2.txt > mA2E_2.s
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####
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mA2E_3.s: mA2E_3.txt text_to_tiny
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./text_to_tiny mA2E_3.txt > mA2E_3.s
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####
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D2: d2.o
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ld65 -o D2 d2.o -C $(LINKER_SCRIPTS)/apple2_6000.inc
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d2.o: d2.s \
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zp.inc hardware.inc \
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mA2E_2.s mA2E_3.s \
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interrupt_handler.s mockingboard_init.s \
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tracker_init.s mockingboard_constants.s ay3_write_regs.s
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ca65 -o d2.o d2.s -l d2.lst
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####
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text_to_tiny: text_to_tiny.o
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$(CC) -o text_to_tiny text_to_tiny.o -lm
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text_to_tiny.o: text_to_tiny.c
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$(CC) $(CFLAGS) -c text_to_tiny.c
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####
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clean:
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rm -f *~ *.o *.lst D2 HELLO text_to_tiny mA2E_2.s mA2E_3.s
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@ -0,0 +1,37 @@
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;=====================
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;=====================
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;=====================
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; ay3 write regs
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;=====================
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;=====================
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;=====================
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; write all 14 registers
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; address in X
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; data in A
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ay3_write_regs:
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ldx #13
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ay3_write_reg_loop:
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lda #MOCK_AY_LATCH_ADDR ; latch_address for PB1 ; 2
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ldy #MOCK_AY_INACTIVE ; go inactive ; 2
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stx MOCK_6522_ORA1 ; put address on PA1 ; 4
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sta MOCK_6522_ORB1 ; latch_address on PB1 ; 4
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sty MOCK_6522_ORB1 ; 4
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; value
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lda AY_REGS,X
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sta MOCK_6522_ORA1 ; put value on PA1 ; 4
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lda #MOCK_AY_WRITE ; ; 2
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sta MOCK_6522_ORB1 ; write on PB1 ; 4
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sty MOCK_6522_ORB1 ; 4
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dex
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bpl ay3_write_reg_loop
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; rts
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@ -0,0 +1,55 @@
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; Apple II graphics/music in 1k
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; by deater (Vince Weaver) <vince@deater.net>
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; Zero Page
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.include "zp.inc"
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.include "hardware.inc"
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; goal is 332 bytes
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; 319 bytes -- switch songs to mA2E_3
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; 415 bytes -- double length of song
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; 334 bytes -- merge length into value
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; if can straddle interrupt vector, save 10 bytes
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; if can guarantee Y is 0 on entry, save 2 bytes
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d2:
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;===================
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; music Player Setup
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tracker_song = peasant_song
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; assume mockingboard in slot#4
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; inline mockingboard_init
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.include "mockingboard_init.s"
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.include "tracker_init.s"
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; start the music playing
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cli
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bob:
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lda KEYPRESS
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bpl bob
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quiet:
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lda #$3f
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sta AY_REGS+7
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end:
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brk
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.include "interrupt_handler.s"
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.include "mockingboard_constants.s"
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; music
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.include "mA2E_3.s"
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@ -0,0 +1,92 @@
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;; HARDWARE LOCATIONS
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KEYPRESS = $C000
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KEYRESET = $C010
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;; SOFT SWITCHES
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CLR80COL = $C000 ; PAGE0/PAGE1 normal
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SET80COL = $C001 ; PAGE0/PAGE1 switches PAGE0 in Aux instead
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EIGHTYCOLOFF = $C00C
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EIGHTYCOLON = $C00D
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SPEAKER = $C030
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SET_GR = $C050
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SET_TEXT = $C051
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FULLGR = $C052
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TEXTGR = $C053
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PAGE1 = $C054
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PAGE2 = $C055
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LORES = $C056 ; Enable LORES graphics
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HIRES = $C057 ; Enable HIRES graphics
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AN3 = $C05E ; Annunciator 3
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PADDLE_BUTTON0 = $C061
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PADDL0 = $C064
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PTRIG = $C070
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;; BASIC ROUTINES
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NORMAL = $F273
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HGR2 = $F3D8
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HCLR = $F3F2
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HPOSN = $F411 ; (Y,X),(A) (values stores in HGRX,XH,Y)
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XDRAW0 = $F65D
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;; MONITOR ROUTINES
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HLINE = $F819 ;; HLINE Y,$2C at A
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VLINE = $F828 ;; VLINE A,$2D at Y
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CLRSCR = $F832 ;; Clear low-res screen
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CLRTOP = $F836 ;; clear only top of low-res screen
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SETGR = $FB40 ;; GR
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SETCOL = $F864 ;; COLOR=A
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TEXT = $FB36
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TABV = $FB5B ;; VTAB to A
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BELL = $FBDD ;; ring the bell
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BASCALC = $FBC1 ;;
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VTAB = $FC22 ;; VTAB to CV
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HOME = $FC58 ;; Clear the text screen
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WAIT = $FCA8 ;; delay 1/2(26+27A+5A^2) us
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CROUT1 = $FD8B
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SETINV = $FE80 ;; INVERSE
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SETNORM = $FE84 ;; NORMAL
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COUT = $FDED ;; output A to screen
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COUT1 = $FDF0 ;; output A to screen
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COLOR_BLACK = 0
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COLOR_RED = 1
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COLOR_DARKBLUE = 2
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COLOR_PURPLE = 3
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COLOR_DARKGREEN = 4
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COLOR_GREY = 5
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COLOR_MEDIUMBLUE = 6
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COLOR_LIGHTBLUE = 7
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COLOR_BROWN = 8
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COLOR_ORANGE = 9
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COLOR_GREY2 = 10
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COLOR_PINK = 11
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COLOR_LIGHTGREEN = 12
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COLOR_YELLOW = 13
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COLOR_AQUA = 14
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COLOR_WHITE = 15
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COLOR_BOTH_BLACK = $00
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COLOR_BOTH_RED = $11
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COLOR_BOTH_DARKBLUE = $22
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COLOR_BOTH_DARKGREEN = $44
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COLOR_BOTH_GREY = $55
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COLOR_BOTH_MEDIUMBLUE = $66
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COLOR_BOTH_LIGHTBLUE = $77
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COLOR_BOTH_BROWN = $88
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COLOR_BOTH_ORANGE = $99
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COLOR_BOTH_PINK = $BB
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COLOR_BOTH_LIGHTGREEN = $CC
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COLOR_BOTH_YELLOW = $DD
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COLOR_BOTH_AQUA = $EE
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COLOR_BOTH_WHITE = $FF
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@ -0,0 +1,6 @@
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5 HOME
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10 PRINT "TINY TRACKER #3"
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20 PRINT CHR$(4);"CATALOG"
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25 PRINT:PRINT "AUTOMATICALLY STARTING"
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30 PRINT "]BRUN D2"
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40 PRINT CHR$(4);"BRUN D2"
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@ -0,0 +1,189 @@
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;================================
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;================================
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; mockingboard interrupt handler
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;================================
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;================================
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; On Apple II/6502 the interrupt handler jumps to address in 0xfffe
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; This is in the ROM, which saves the registers
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; on older IIe it saved A to $45 (which could mess with DISK II)
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; newer IIe doesn't do that.
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; It then calculates if it is a BRK or not (which trashes A)
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; Then it sets up the stack like an interrupt and calls 0x3fe
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; Note: the IIc is much more complicated
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; its firmware tries to decode the proper source
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; based on various things, including screen hole values
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; we bypass that by switching out ROM and replacing the
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; $fffe vector with this, but that does mean we have
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; to be sure status flag and accumulator set properly
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interrupt_handler:
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php ; save status flags
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; we don't use decimal mode so no need to clear it?
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; A is saved in $45 by firmware
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; we are assuming a II/II+/IIe here
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txa
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pha ; save X
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tya
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pha ; save Y
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; inc $0404 ; debug (flashes char onscreen)
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ay3_irq_handler:
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;==========================================
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; clear 6522 interrupt by reading T1C-L ; 4
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bit MOCK_6522_T1CL
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; drop note down after first
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lda #$C
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sta AY_REGS+8
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sta AY_REGS+10
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; lda #$0E
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; sta AY_REGS+8 ; $08 volume A
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; lda #$0C
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; sta AY_REGS+9 ; $09 volume B
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; sta AY_REGS+10 ; $0A volume C
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;============================
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; see if still counting down
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lda SONG_COUNTDOWN
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bpl done_update_song
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set_notes_loop:
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;==================
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; load next byte
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ldy SONG_OFFSET
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lda tracker_song,Y
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;==================
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; see if hit end
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cmp #$FF
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bne all_ok
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;====================================
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; if at end, loop back to beginning
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lda #0 ; reset song offset
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sta SONG_OFFSET
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beq set_notes_loop ; bra
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all_ok:
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; see if note
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; tay
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; and #$C0
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; cmp #$C0
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; beq handle_timing
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note_only:
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; tya
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; NNNNNLLC -- c=channel, n=note
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tay
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ldx #0
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lsr
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bcc channel_a
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ldx #4 ; skip to C
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channel_a:
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and #$3
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sta SONG_COUNTDOWN
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; inc SONG_COUNTDOWN
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tya
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lsr
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lsr
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lsr
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; and #$FE ; fine register value, want in X
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; tax
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; tya ; get note
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; and #$1F
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tay ; lookup in table
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lda frequencies_low,Y
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sta AY_REGS,X ; set proper register value
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lda frequencies_high,Y
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sta AY_REGS+1,X
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lda #$F
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sta AY_REGS+8
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;============================
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; point to next
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; assume less than 256 bytes
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inc SONG_OFFSET
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lda SONG_COUNTDOWN
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beq set_notes_loop ; bra
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.include "ay3_write_regs.s"
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; jsr ay3_write_regs
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handle_timing:
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; was timing
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; tya
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; and #$3f
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; sta SONG_COUNTDOWN
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; inc SONG_OFFSET
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done_update_song:
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dec SONG_COUNTDOWN
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;=================================
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; Finally done with this interrupt
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;=================================
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done_ay3_irq_handler:
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pla
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tay ; restore Y
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pla
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tax ; restore X
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; on II+/IIe the firmware saves A in $45
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; this won't work on a IIc/IIgs
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lda $45 ; restore A
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plp ; restore flags
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rti ; return from interrupt ; 6
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;============
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; typical
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; ???? cycles
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@ -0,0 +1,212 @@
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'' TITLE: Mockingboard Tune 2 - 2021
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' AUTHOR: mA2E / dSr
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' COMMENTS:
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'
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' LOOP: 640
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'
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' BPM: 250
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' TEMPO: 6
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' FREQ: 1000000
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' IRQ: 50
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'
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' LYRICS: 0
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'
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' ENDHEADER
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-------
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' 0
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0 F 3-- C 5-- C 4--
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1 ----- ----- -----
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2 ----- ----- -----
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3 ----- ----- -----
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4 ----- ----- F 4--
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5 ----- ----- -----
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6 ----- ----- -----
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7 ----- ----- -----
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8 F 4-- F 5-- G 4--
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9 ----- ----- -----
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A ----- ----- -----
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B ----- ----- -----
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C ----- ----- G#4--
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D ----- ----- -----
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E ----- ----- -----
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F ----- ----- -----
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10 F 3-- G 5-- C 4--
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11 ----- ----- -----
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12 ----- ----- -----
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13 ----- ----- -----
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14 ----- ----- F 4--
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15 ----- ----- -----
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16 ----- ----- -----
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17 ----- ----- -----
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18 F 4-- G#5-- G 4--
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19 ----- ----- -----
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1A ----- ----- -----
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1B ----- ----- -----
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1C ----- ----- G#4--
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1D ----- ----- -----
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1E ----- ----- -----
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1F ----- ----- -----
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20 F 3-- G 5-- C 4--
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21 ----- ----- -----
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22 ----- ----- -----
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23 ----- ----- -----
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24 ----- ----- F 4--
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25 ----- ----- -----
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26 ----- ----- -----
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27 ----- ----- -----
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28 F 4-- G#5-- G 4--
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29 ----- ----- -----
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2A ----- ----- -----
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2B ----- ----- -----
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2C ----- ----- G#4--
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2D ----- ----- -----
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2E ----- ----- -----
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2F ----- ----- -----
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30 F 3-- C 6-- C 4--
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31 ----- ----- -----
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32 ----- ----- -----
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33 ----- ----- -----
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34 ----- ----- F 4--
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35 ----- ----- -----
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36 ----- ----- -----
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37 ----- ----- -----
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38 F 4-- ----- G 4--
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39 ----- ----- -----
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3A ----- ----- -----
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3B ----- ----- -----
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3C ----- ----- G#4--
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3D ----- ----- -----
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3E ----- ----- -----
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3F ----- ----- -----
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' 1
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0 D#3-- A#5-- D#4--
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1 ----- ----- -----
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2 ----- ----- -----
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3 ----- ----- -----
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4 ----- ----- G 4--
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5 ----- ----- -----
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6 ----- ----- -----
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7 ----- ----- -----
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8 D#4-- G#5-- G#4--
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9 ----- ----- -----
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A ----- ----- -----
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B ----- ----- -----
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C ----- ----- A#4--
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D ----- ----- -----
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E ----- ----- -----
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F ----- ----- -----
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10 D#3-- G 5-- D#4--
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11 ----- ----- -----
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12 ----- ----- -----
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13 ----- ----- -----
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14 ----- ----- G 4--
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15 ----- ----- -----
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16 ----- ----- -----
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17 ----- ----- -----
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18 D#4-- F 5-- G#4--
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19 ----- ----- -----
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1A ----- ----- -----
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1B ----- ----- -----
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1C ----- ----- A#4--
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1D ----- ----- -----
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1E ----- ----- -----
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1F ----- ----- -----
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20 D#3-- G 5-- D#4--
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21 ----- ----- -----
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22 ----- ----- -----
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||||
23 ----- ----- -----
|
||||
24 ----- ----- G 4--
|
||||
25 ----- ----- -----
|
||||
26 ----- ----- -----
|
||||
27 ----- ----- -----
|
||||
28 D#4-- G#5-- G#4--
|
||||
29 ----- ----- -----
|
||||
2A ----- ----- -----
|
||||
2B ----- ----- -----
|
||||
2C ----- ----- A#4--
|
||||
2D ----- ----- -----
|
||||
2E ----- ----- -----
|
||||
2F ----- ----- -----
|
||||
30 D#3-- G 5-- D#4--
|
||||
31 ----- ----- -----
|
||||
32 ----- ----- -----
|
||||
33 ----- ----- -----
|
||||
34 ----- ----- G 4--
|
||||
35 ----- ----- -----
|
||||
36 ----- ----- -----
|
||||
37 ----- ----- -----
|
||||
38 D#4-- ----- G#4--
|
||||
39 ----- ----- -----
|
||||
3A ----- ----- -----
|
||||
3B ----- ----- -----
|
||||
3C ----- ----- A#4--
|
||||
3D ----- ----- -----
|
||||
3E ----- ----- -----
|
||||
3F ----- ----- -----
|
||||
' 2
|
||||
0 C#3-- G 5-- C#4--
|
||||
1 ----- ----- -----
|
||||
2 ----- ----- -----
|
||||
3 ----- ----- -----
|
||||
4 ----- ----- F 4--
|
||||
5 ----- ----- -----
|
||||
6 ----- ----- -----
|
||||
7 ----- ----- -----
|
||||
8 C#4-- ----- G 4--
|
||||
9 ----- ----- -----
|
||||
A ----- ----- -----
|
||||
B ----- ----- -----
|
||||
C ----- ----- G#4--
|
||||
D ----- ----- -----
|
||||
E ----- ----- -----
|
||||
F ----- ----- -----
|
||||
10 C#3-- G#5-- C#4--
|
||||
11 ----- ----- -----
|
||||
12 ----- ----- -----
|
||||
13 ----- ----- -----
|
||||
14 ----- ----- F 4--
|
||||
15 ----- ----- -----
|
||||
16 ----- ----- -----
|
||||
17 ----- ----- -----
|
||||
18 C#4-- F 5-- G 4--
|
||||
19 ----- ----- -----
|
||||
1A ----- ----- -----
|
||||
1B ----- ----- -----
|
||||
1C ----- ----- G#4--
|
||||
1D ----- ----- -----
|
||||
1E ----- ----- -----
|
||||
1F ----- ----- -----
|
||||
20 C#3-- ----- C#4--
|
||||
21 ----- ----- -----
|
||||
22 ----- ----- -----
|
||||
23 ----- ----- -----
|
||||
24 ----- ----- F 4--
|
||||
25 ----- ----- -----
|
||||
26 ----- ----- -----
|
||||
27 ----- ----- -----
|
||||
28 C#4-- ----- G 4--
|
||||
29 ----- ----- -----
|
||||
2A ----- ----- -----
|
||||
2B ----- ----- -----
|
||||
2C ----- ----- G#4--
|
||||
2D ----- ----- -----
|
||||
2E ----- ----- -----
|
||||
2F ----- ----- -----
|
||||
30 C#3-- ----- C#4--
|
||||
31 ----- ----- -----
|
||||
32 ----- ----- -----
|
||||
33 ----- ----- -----
|
||||
34 ----- ----- F 4--
|
||||
35 ----- ----- -----
|
||||
36 ----- ----- -----
|
||||
37 ----- ----- -----
|
||||
38 C#4-- ----- G 4--
|
||||
39 ----- ----- -----
|
||||
3A ----- ----- -----
|
||||
3B ----- ----- -----
|
||||
3C ----- ----- A#4--
|
||||
3D ----- ----- -----
|
||||
3E ----- ----- -----
|
||||
3F ----- ----- -----
|
||||
|
||||
|
||||
|
|
@ -0,0 +1,145 @@
|
|||
'' TITLE: Mockingboard Tune 3 - 2021
|
||||
' AUTHOR: mA2E / dSr
|
||||
' COMMENTS:
|
||||
'
|
||||
' LOOP: 640
|
||||
'
|
||||
' BPM: 250
|
||||
' TEMPO: 6
|
||||
' FREQ: 1000000
|
||||
' IRQ: 50
|
||||
'
|
||||
' LYRICS: 0
|
||||
'
|
||||
' ENDHEADER
|
||||
-------
|
||||
' 1
|
||||
0 G 3-- ----- G 6--
|
||||
1 ----- ----- -----
|
||||
2 ----- ----- -----
|
||||
3 G 4-- ----- D 6--
|
||||
4 ----- ----- -----
|
||||
5 F 3-- ----- -----
|
||||
6 G 3- ----- A#5--
|
||||
7 ----- ----- -----
|
||||
8 G 3-- ----- G 5--
|
||||
9 ----- ----- -----
|
||||
A ----- ----- -----
|
||||
B G 4-- ----- A#5--
|
||||
C ----- ----- -----
|
||||
D F 3-- ----- -----
|
||||
E G 3-- ----- D 6--
|
||||
F ----- ----- -----
|
||||
10 D#3-- ----- G 6--
|
||||
11 ----- ----- -----
|
||||
12 ----- ----- -----
|
||||
13 D#4-- ----- D#6--
|
||||
14 ----- ----- -----
|
||||
15 D 3- ----- -----
|
||||
16 D#3-- ----- A#5--
|
||||
17 ----- ----- -----
|
||||
18 D#3-- ----- G 5--
|
||||
19 ----- ----- -----
|
||||
1A ----- ----- -----
|
||||
1B D#4-- ----- A#5--
|
||||
1C ----- ----- -----
|
||||
1D D 3-- ----- -----
|
||||
1E D#3-- ----- G 6--
|
||||
1F ----- ----- -----
|
||||
20 F 3-- ----- F 6--
|
||||
21 ----- ----- -----
|
||||
22 ----- ----- -----
|
||||
23 F 4-- ----- -----
|
||||
24 ----- ----- C 6--
|
||||
25 D#3-- ----- -----
|
||||
26 F 3-- ----- A 5--
|
||||
27 ----- ----- -----
|
||||
28 F 3-- ----- F 5--
|
||||
29 ----- ----- -----
|
||||
2A ----- ----- -----
|
||||
2B F 4-- ----- A 5--
|
||||
2C ----- ----- -----
|
||||
2D D#3-- ----- -----
|
||||
2E F 3-- ----- D#6--
|
||||
2F ----- ----- -----
|
||||
30 D 3-- ----- D 6--
|
||||
31 ----- ----- -----
|
||||
32 ----- ----- -----
|
||||
33 D 4-- ----- D#6--
|
||||
34 ----- ----- -----
|
||||
35 C 3-- ----- -----
|
||||
36 D 3-- ----- D 6--
|
||||
37 ----- ----- -----
|
||||
38 D 3-- ----- C 6--
|
||||
39 ----- ----- -----
|
||||
3A ----- ----- -----
|
||||
3B D 4-- ----- A#5--
|
||||
3C ----- ----- -----
|
||||
3D C 3-- ----- -----
|
||||
3E D 3-- ----- A 5--
|
||||
3F ----- ----- -----
|
||||
' 1
|
||||
0 G 3-- ----- G 6--
|
||||
1 ----- ----- -----
|
||||
2 ----- ----- -----
|
||||
3 G 4-- ----- -----
|
||||
4 ----- ----- -----
|
||||
5 F 3-- ----- -----
|
||||
6 G 3- ----- F 6--
|
||||
7 ----- ----- D 6--
|
||||
8 G 3-- ----- G 5--
|
||||
9 ----- ----- -----
|
||||
A ----- ----- -----
|
||||
B G 4-- ----- -----
|
||||
C ----- ----- A#5--
|
||||
D F 3-- ----- -----
|
||||
E G 3-- ----- C 6--
|
||||
F ----- ----- -----
|
||||
10 D#3-- ----- G 6--
|
||||
11 ----- ----- -----
|
||||
12 ----- ----- -----
|
||||
13 D#4-- ----- -----
|
||||
14 ----- ----- -----
|
||||
15 D 3- ----- -----
|
||||
16 D#3-- ----- F 6--
|
||||
17 ----- ----- G 6--
|
||||
18 D#3-- ----- D#6--
|
||||
19 ----- ----- -----
|
||||
1A ----- ----- -----
|
||||
1B D#4-- ----- -----
|
||||
1C ----- ----- D 6--
|
||||
1D D 3-- ----- -----
|
||||
1E D#3-- ----- A#5--
|
||||
1F ----- ----- -----
|
||||
20 F 3-- ----- C 6--
|
||||
21 ----- ----- -----
|
||||
22 ----- ----- -----
|
||||
23 F 4-- ----- -----
|
||||
24 ----- ----- -----
|
||||
25 D#3-- ----- -----
|
||||
26 F 3-- ----- A#5--
|
||||
27 ----- ----- C 6--
|
||||
28 F 3-- ----- A 5--
|
||||
29 ----- ----- -----
|
||||
2A ----- ----- -----
|
||||
2B F 4-- ----- -----
|
||||
2C ----- ----- G 5--
|
||||
2D D#3-- ----- -----
|
||||
2E F 3-- ----- A 5--
|
||||
2F ----- ----- -----
|
||||
30 D 3-- ----- F 5--
|
||||
31 ----- ----- -----
|
||||
32 ----- ----- -----
|
||||
33 D 4-- ----- G 5--
|
||||
34 ----- ----- -----
|
||||
35 C 3-- ----- -----
|
||||
36 D 3-- ----- A 5--
|
||||
37 ----- ----- -----
|
||||
38 D 3-- ----- -----
|
||||
39 ----- ----- C 6--
|
||||
3A ----- ----- -----
|
||||
3B D 4-- ----- -----
|
||||
3C ----- ----- F 5--
|
||||
3D C 3-- ----- -----
|
||||
3E D 3-- ----- -----
|
||||
3F ----- ----- -----
|
||||
|
|
@ -0,0 +1,16 @@
|
|||
init_addresses:
|
||||
.byte <MOCK_6522_DDRB1,<MOCK_6522_DDRA1 ; set the data direction for all pins of PortA/PortB to be output
|
||||
.byte <MOCK_6522_ACR,<MOCK_6522_IER ; Continuous interrupts, clear all interrupts
|
||||
.byte <MOCK_6522_IFR,<MOCK_6522_IER ; enable interrupt on timer overflow
|
||||
.byte <MOCK_6522_T1CL,<MOCK_6522_T1CH ; set oflow value, start counting
|
||||
.byte <MOCK_6522_ORB1,<MOCK_6522_ORB1 ; reset ay-3-8910
|
||||
|
||||
; note, terminated by the $ff below
|
||||
|
||||
init_values:
|
||||
.byte $ff,$ff ; set the data direction for all pins of PortA/PortB to be output
|
||||
.byte $40,$7f
|
||||
.byte $C0,$C0
|
||||
.byte $CE,$C7 ; c7ce / 1.023e6 = .050s, 20Hz
|
||||
.byte MOCK_AY_RESET,MOCK_AY_INACTIVE
|
||||
|
||||
|
|
@ -0,0 +1,105 @@
|
|||
; Mockingboad programming:
|
||||
; + Has two 6522 I/O chips connected to two AY-3-8910 chips
|
||||
; + Optionally has some speech chips controlled via the outport on the AY
|
||||
; + Often in slot 4
|
||||
; TODO: how to auto-detect?
|
||||
; References used:
|
||||
; http://macgui.com/usenet/?group=2&id=8366
|
||||
; 6522 Data Sheet
|
||||
; AY-3-8910 Data Sheet
|
||||
|
||||
;========================
|
||||
; Mockingboard card
|
||||
; Essentially two 6522s hooked to the Apple II bus
|
||||
; Connected to AY-3-8910 chips
|
||||
; PA0-PA7 on 6522 connected to DA0-DA7 on AY
|
||||
; PB0 on 6522 connected to BC1
|
||||
; PB1 on 6522 connected to BDIR
|
||||
; PB2 on 6522 connected to RESET
|
||||
|
||||
|
||||
; left speaker
|
||||
MOCK_6522_ORB1 = $C400 ; 6522 #1 port b data
|
||||
MOCK_6522_ORA1 = $C401 ; 6522 #1 port a data
|
||||
MOCK_6522_DDRB1 = $C402 ; 6522 #1 data direction port B
|
||||
MOCK_6522_DDRA1 = $C403 ; 6522 #1 data direction port A
|
||||
MOCK_6522_T1CL = $C404 ; 6522 #1 t1 low order latches
|
||||
MOCK_6522_T1CH = $C405 ; 6522 #1 t1 high order counter
|
||||
MOCK_6522_T1LL = $C406 ; 6522 #1 t1 low order latches
|
||||
MOCK_6522_T1LH = $C407 ; 6522 #1 t1 high order latches
|
||||
MOCK_6522_T2CL = $C408 ; 6522 #1 t2 low order latches
|
||||
MOCK_6522_T2CH = $C409 ; 6522 #1 t2 high order counters
|
||||
MOCK_6522_SR = $C40A ; 6522 #1 shift register
|
||||
MOCK_6522_ACR = $C40B ; 6522 #1 auxilliary control register
|
||||
MOCK_6522_PCR = $C40C ; 6522 #1 peripheral control register
|
||||
MOCK_6522_IFR = $C40D ; 6522 #1 interrupt flag register
|
||||
MOCK_6522_IER = $C40E ; 6522 #1 interrupt enable register
|
||||
MOCK_6522_ORANH = $C40F ; 6522 #1 port a data no handshake
|
||||
|
||||
|
||||
; right speaker
|
||||
MOCK_6522_ORB2 = $C480 ; 6522 #2 port b data
|
||||
MOCK_6522_ORA2 = $C481 ; 6522 #2 port a data
|
||||
MOCK_6522_DDRB2 = $C482 ; 6522 #2 data direction port B
|
||||
MOCK_6522_DDRA2 = $C483 ; 6522 #2 data direction port A
|
||||
|
||||
; AY-3-8910 commands on port B
|
||||
; RESET BDIR BC1
|
||||
MOCK_AY_RESET = $0 ; 0 0 0
|
||||
MOCK_AY_INACTIVE = $4 ; 1 0 0
|
||||
MOCK_AY_READ = $5 ; 1 0 1
|
||||
MOCK_AY_WRITE = $6 ; 1 1 0
|
||||
MOCK_AY_LATCH_ADDR = $7 ; 1 1 1
|
||||
|
||||
|
||||
;========================
|
||||
;========================
|
||||
; Mockingboard Init
|
||||
;========================
|
||||
;========================
|
||||
; Left channel only
|
||||
|
||||
mockingboard_init:
|
||||
|
||||
; sei ; disable interrupts, is this necessary?
|
||||
|
||||
;=========================
|
||||
; Setup Interrupt Handler
|
||||
;=========================
|
||||
|
||||
; NOTE: we don't support IIc as it's a hack
|
||||
; traditionally Mockingboard on IIc was rare
|
||||
|
||||
;========================
|
||||
; set up interrupt
|
||||
; Vector address goes to 0x3fe/0x3ff
|
||||
|
||||
; can save 10 bytes if we load in memory so this
|
||||
; is in the right place automatically
|
||||
|
||||
lda #<interrupt_handler ; 2
|
||||
sta $03fe ; 3
|
||||
lda #>interrupt_handler ; 2
|
||||
sta $03ff ; 3
|
||||
;=========
|
||||
; 10
|
||||
;=========================
|
||||
; Initialize the 6522s
|
||||
; Reset Left AY-3-8910
|
||||
;===========================
|
||||
|
||||
; entries=10
|
||||
; 14 + 2*entries = 34 bytes
|
||||
|
||||
ldy #0 ; 2
|
||||
init_it_loop:
|
||||
lda init_values,Y ; 3
|
||||
ldx init_addresses,Y ; 3
|
||||
bmi doneit ; 2
|
||||
iny ; 1
|
||||
sta $c400,X ; 3
|
||||
bne init_it_loop ; 2
|
||||
doneit:
|
||||
|
||||
|
||||
|
||||
|
|
@ -0,0 +1,532 @@
|
|||
/* make music for tiny_music player */
|
||||
|
||||
#define VERSION "1.0"
|
||||
|
||||
#include <stdio.h>
|
||||
#include <stdint.h>
|
||||
#include <string.h>
|
||||
#include <stdlib.h>
|
||||
#include <unistd.h>
|
||||
|
||||
#include <stdio.h>
|
||||
#include <stdint.h>
|
||||
#include <string.h>
|
||||
#include <math.h>
|
||||
|
||||
static int octave_adjust=0;
|
||||
|
||||
static int notes_used[64];
|
||||
static int allocated_notes[64];
|
||||
static int notes_allocated=0;
|
||||
static int total_len=0;
|
||||
|
||||
|
||||
unsigned short frequencies[]={
|
||||
//C C# D D# E F F# G G# A A# B
|
||||
//0x7A3,0x735,0x6CD,0x66C,0x60F,0x5B8,0x566,0x518,0x4CF,0x48A,0x449,0x40B,
|
||||
0x3D1,0x39A,0x366,0x336,0x307,0x2DC,0x2B3,0x28C,0x267,0x245,0x224,0x205,
|
||||
0x1E8,0x1CD,0x1B3,0x19B,0x183,0x16E,0x159,0x146,0x133,0x122,0x112,0x102, //3
|
||||
0x0F4,0x0E6,0x0D9,0x0CD,0x0C1,0x0B7,0x0AC,0x0A3,0x099,0x091,0x089,0x081, //4
|
||||
0x07A,0x073,0x06C,0x066,0x060,0x05B,0x056,0x051,0x04C,0x048,0x044,0x040, //5
|
||||
//0x03D,0x039,0x036,0x033,0x030,0x02D,0x02B,0x028,0x026,0x024,0x022,0x020, //6
|
||||
//0x01E,0x01C,0x01B,0x019,0x018,0x016,0x015,0x014,0x013,0x012,0x011,0x010,
|
||||
//0x00F,0x00E,0x00D,0x00C,0x00C,0x00B,0x00A,0x00A,0x009,0x009,0x008,0x008,
|
||||
};
|
||||
|
||||
// CLLNNNN
|
||||
|
||||
int note_to_ed(char note, int flat, int sharp, int octave) {
|
||||
|
||||
int offset;
|
||||
|
||||
switch(note) {
|
||||
case 'C': offset=0; break;
|
||||
case 'D': offset=2; break;
|
||||
case 'E': offset=4; break;
|
||||
case 'F': offset=5; break;
|
||||
case 'G': offset=7; break;
|
||||
case 'A': offset=9; break;
|
||||
case 'B': offset=11; break;
|
||||
|
||||
case 'R': offset=12; flat=0; sharp=0; octave=3; break;
|
||||
|
||||
default:
|
||||
fprintf(stderr,"Unknown note %c\n",note);
|
||||
return -1;
|
||||
}
|
||||
if (flat==1) offset--;
|
||||
if (sharp==1) offset++;
|
||||
if (sharp==2) offset+=2;
|
||||
|
||||
|
||||
offset=((((octave+octave_adjust)-3)&0x3)*12)+offset;
|
||||
// offset=((((octave+octave_adjust)-3)&0x3)<<4)|offset;
|
||||
|
||||
return offset;
|
||||
}
|
||||
|
||||
|
||||
|
||||
static int debug=0;
|
||||
|
||||
static int line=0;
|
||||
|
||||
static int header_version=0;
|
||||
|
||||
|
||||
struct note_type {
|
||||
unsigned char which;
|
||||
unsigned char note;
|
||||
int sharp,flat;
|
||||
int octave;
|
||||
int len;
|
||||
int enabled;
|
||||
int freq;
|
||||
int length;
|
||||
int left;
|
||||
int ed_freq;
|
||||
int offset;
|
||||
};
|
||||
|
||||
|
||||
static int allocate_note(int which) {
|
||||
|
||||
int i;
|
||||
for(i=0;i<notes_allocated;i++) {
|
||||
if (allocated_notes[i]==which) return i;
|
||||
}
|
||||
|
||||
allocated_notes[notes_allocated]=which;
|
||||
notes_allocated++;
|
||||
|
||||
return notes_allocated-1;
|
||||
|
||||
}
|
||||
|
||||
static int get_note(char *string, int sp, struct note_type *n, int line) {
|
||||
|
||||
int freq;
|
||||
int ch;
|
||||
|
||||
// fprintf(stderr,"VMW: Entering, sp=%d\n",sp);
|
||||
|
||||
/* Skip white space */
|
||||
while((string[sp]==' ' || string[sp]=='\t')) sp++;
|
||||
|
||||
if (string[sp]=='\n') return -1;
|
||||
|
||||
/* return early if no change */
|
||||
ch=string[sp];
|
||||
|
||||
// fprintf(stderr,"VMW: %d %d\n",ch,sp);
|
||||
|
||||
if (ch=='-') {
|
||||
if (header_version==0) return sp+6;
|
||||
else {
|
||||
return sp+11;
|
||||
}
|
||||
}
|
||||
|
||||
/* get note info */
|
||||
n->sharp=0;
|
||||
n->flat=0;
|
||||
n->ed_freq=-1;
|
||||
n->note=ch;
|
||||
sp++;
|
||||
if (string[sp]==' ') ;
|
||||
else if (string[sp]=='#') n->sharp=1;
|
||||
else if (string[sp]=='-') n->flat=1;
|
||||
else if (string[sp]=='=') n->flat=2;
|
||||
else {
|
||||
fprintf(stderr,"Unknown note modifier %c, line %d:%d\n",
|
||||
string[sp],line,sp);
|
||||
fprintf(stderr,"String: %s\n",string);
|
||||
}
|
||||
// printf("Sharp=%d Flat=%d\n",n->sharp,n->flat);
|
||||
sp++;
|
||||
n->octave=string[sp]-'0';
|
||||
sp++;
|
||||
sp++;
|
||||
n->len=string[sp]-'0';
|
||||
sp++;
|
||||
|
||||
|
||||
if (n->note!='-') {
|
||||
|
||||
freq=note_to_ed(n->note,n->flat,n->sharp,
|
||||
n->octave);
|
||||
|
||||
n->enabled=1;
|
||||
n->length=0;
|
||||
n->ed_freq=freq;
|
||||
}
|
||||
|
||||
if (header_version==2) sp+=6;
|
||||
|
||||
return sp;
|
||||
}
|
||||
|
||||
static int get_string(char *string, char *key, char *output, int strip_linefeed) {
|
||||
|
||||
char *found;
|
||||
|
||||
found=strstr(string,key);
|
||||
found=found+strlen(key);
|
||||
|
||||
/* get rid of leading whitespace */
|
||||
while(1) {
|
||||
if ((*found==' ') || (*found=='\t')) found++;
|
||||
else break;
|
||||
}
|
||||
|
||||
strcpy(output,found);
|
||||
|
||||
/* remove trailing linefeed */
|
||||
if (strip_linefeed) output[strlen(output)-1]=0;
|
||||
|
||||
return 0;
|
||||
|
||||
}
|
||||
|
||||
static void print_help(int just_version, char *exec_name) {
|
||||
|
||||
printf("\ntext_to_ed version %s by Vince Weaver <vince@deater.net>\n\n",VERSION);
|
||||
if (just_version) exit(0);
|
||||
|
||||
printf("This created Electric Duet files\n\n");
|
||||
|
||||
printf("Usage:\n");
|
||||
printf("\t%s [-h] [-v] [-d] [-o X] [-i X] textfile outbase\n\n",
|
||||
exec_name);
|
||||
printf("\t-h: this help message\n");
|
||||
printf("\t-v: version info\n");
|
||||
printf("\t-d: print debug messages\n");
|
||||
printf("\t-o: Offset octave by X\n");
|
||||
printf("\t-i: set second instrument to X\n");
|
||||
|
||||
exit(0);
|
||||
}
|
||||
|
||||
|
||||
int main(int argc, char **argv) {
|
||||
|
||||
char string[BUFSIZ];
|
||||
char *result;
|
||||
char *in_filename;
|
||||
char temp[BUFSIZ];
|
||||
FILE *in_file=NULL;
|
||||
//int attributes=0;
|
||||
int loop=0;
|
||||
int sp,external_frequency,irq;
|
||||
struct note_type a,b,c;
|
||||
int copt;
|
||||
|
||||
char song_name[BUFSIZ];
|
||||
char author_name[BUFSIZ];
|
||||
char comments[BUFSIZ];
|
||||
char *comments_ptr=comments;
|
||||
|
||||
unsigned char sharp_char[]=" #-=";
|
||||
|
||||
/* Parse command line arguments */
|
||||
while ((copt = getopt(argc, argv, "dhvo:i:"))!=-1) {
|
||||
switch (copt) {
|
||||
case 'd':
|
||||
/* Debug messages */
|
||||
printf("Debug enabled\n");
|
||||
debug=1;
|
||||
break;
|
||||
case 'h':
|
||||
/* help */
|
||||
print_help(0,argv[0]);
|
||||
break;
|
||||
case 'v':
|
||||
/* version */
|
||||
print_help(1,argv[0]);
|
||||
break;
|
||||
case 'o':
|
||||
/* octave offset */
|
||||
octave_adjust=atoi(optarg);
|
||||
break;
|
||||
default:
|
||||
print_help(0,argv[0]);
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
if (argv[optind]!=NULL) {
|
||||
/* Open the input file */
|
||||
if (argv[optind][0]=='-') {
|
||||
in_file=stdin;
|
||||
}
|
||||
else {
|
||||
in_filename=strdup(argv[optind]);
|
||||
in_file=fopen(in_filename,"r");
|
||||
if (in_file==NULL) {
|
||||
fprintf(stderr,"Couldn't open %s\n",in_filename);
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/* Get the info for the header */
|
||||
|
||||
while(1) {
|
||||
result=fgets(string,BUFSIZ,in_file);
|
||||
if (result==NULL) break;
|
||||
line++;
|
||||
if (strstr(string,"ENDHEADER")) break;
|
||||
if (strstr(string,"HEADER:")) {
|
||||
get_string(string,"HEADER:",temp,1);
|
||||
header_version=atoi(temp);
|
||||
printf("Found header version %d\n",header_version);
|
||||
}
|
||||
if (strstr(string,"TITLE:")) {
|
||||
get_string(string,"TITLE:",song_name,1);
|
||||
}
|
||||
if (strstr(string,"AUTHOR:")) {
|
||||
get_string(string,"AUTHOR:",author_name,1);
|
||||
}
|
||||
if (strstr(string,"COMMENTS:")) {
|
||||
get_string(string,"COMMENTS:",comments_ptr,0);
|
||||
comments_ptr=&comments[strlen(comments)];
|
||||
}
|
||||
|
||||
if (strstr(string,"FREQ:")) {
|
||||
get_string(string,"FREQ:",temp,1);
|
||||
external_frequency=atoi(temp);
|
||||
}
|
||||
if (strstr(string,"IRQ:")) {
|
||||
get_string(string,"IRQ:",temp,1);
|
||||
irq=atoi(temp);
|
||||
}
|
||||
if (strstr(string,"LOOP:")) {
|
||||
get_string(string,"LOOP:",temp,1);
|
||||
loop=atoi(temp);
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
a.which='A'; b.which='B'; c.which='C';
|
||||
|
||||
|
||||
// algorithm
|
||||
// get A,B,C
|
||||
|
||||
|
||||
// int first=1;
|
||||
// int a_last=0,b_last=0,same_count=0;
|
||||
// int a_len=0,b_len=0,a_freq=0,b_freq=0;
|
||||
int current_length=0;
|
||||
int first=1;
|
||||
int a_last=-1,c_last=-1;
|
||||
unsigned char temp_value;
|
||||
|
||||
printf("peasant_song:\n");
|
||||
printf("; register init\n");
|
||||
//printf("\t.byte $00,$00,$00,$00,$00,$00 ; $00: A/B/C fine/coarse\n");
|
||||
//printf("\t.byte $00 ; $06\n");
|
||||
//printf("\t.byte $38 ; $07 mixer (ABC on)\n");
|
||||
//printf("\t.byte $0E,$0C,$0C ; $08 volume A/B/C\n");
|
||||
//printf("\t.byte $00,$00,$00,$00 ; $09\n");
|
||||
printf("\n");
|
||||
|
||||
while(1) {
|
||||
result=fgets(string,BUFSIZ,in_file);
|
||||
if (result==NULL) break;
|
||||
line++;
|
||||
|
||||
a.ed_freq=-1;
|
||||
b.ed_freq=-1;
|
||||
c.ed_freq=-1;
|
||||
a.length=0;
|
||||
b.length=0;
|
||||
c.length=0;
|
||||
|
||||
/* skip comments */
|
||||
if (string[0]=='\'') continue;
|
||||
if (string[0]=='-') continue;
|
||||
if (string[0]=='*') continue;
|
||||
|
||||
sp=0;
|
||||
|
||||
/* Skip line number */
|
||||
while((string[sp]!=' ' && string[sp]!='\t')) sp++;
|
||||
|
||||
sp=get_note(string,sp,&a,line);
|
||||
if (sp!=-1) sp=get_note(string,sp,&b,line);
|
||||
if (sp!=-1) sp=get_note(string,sp,&c,line);
|
||||
|
||||
if (a.ed_freq>=0) {
|
||||
a.offset=allocate_note(a.ed_freq);
|
||||
notes_used[a.ed_freq]++;
|
||||
printf("; A: %d\n",a.ed_freq);
|
||||
}
|
||||
if (b.ed_freq>=0) {
|
||||
b.offset=allocate_note(b.ed_freq);
|
||||
notes_used[b.ed_freq]++;
|
||||
printf("; B: %d\n",b.ed_freq);
|
||||
}
|
||||
if (c.ed_freq>=0) {
|
||||
c.offset=allocate_note(c.ed_freq);
|
||||
notes_used[c.ed_freq]++;
|
||||
printf("; C: %d\n",c.ed_freq);
|
||||
}
|
||||
|
||||
if ((a.ed_freq>=0)||(b.ed_freq>=0)||(c.ed_freq>=0)) {
|
||||
printf("; none: a=%d c=%d len=%d\n",a_last,c_last,current_length);
|
||||
//NNNNNLLC
|
||||
|
||||
|
||||
|
||||
if (!first) {
|
||||
if (a_last>=0) {
|
||||
temp_value=(a_last<<3)|0;
|
||||
if (c_last<0) temp_value|=(current_length<<1);
|
||||
|
||||
printf("\t.byte $%02X ; A=%d L=%d\n",
|
||||
temp_value,
|
||||
a_last,c_last>=0?0:current_length);
|
||||
total_len++;
|
||||
a_last=-1;
|
||||
}
|
||||
|
||||
if (c_last>=0) {
|
||||
printf("\t.byte $%02X ; C=%d L=%d\n",
|
||||
(unsigned char)(c_last<<3)|((current_length)<<1)|1,
|
||||
c_last,current_length);
|
||||
total_len++;
|
||||
c_last=-1;
|
||||
}
|
||||
}
|
||||
current_length=0;
|
||||
|
||||
//if (!first) {
|
||||
// printf("\t.byte $%02X ; L = %d\n",
|
||||
// current_length|0xc0,current_length);
|
||||
// printf("\n");
|
||||
// current_length=0;
|
||||
// total_len++;
|
||||
//}
|
||||
|
||||
|
||||
first=0;
|
||||
}
|
||||
|
||||
|
||||
if (a.ed_freq>=0) {
|
||||
a_last=a.offset;
|
||||
}
|
||||
if (b.ed_freq>=0) {
|
||||
|
||||
}
|
||||
if (c.ed_freq>=0) {
|
||||
c_last=c.offset;
|
||||
}
|
||||
|
||||
|
||||
#if 0
|
||||
if (a.ed_freq>=0) {
|
||||
printf("\t.byte $%02X ; A = %c%c%d freq=%d offset=%d\n",
|
||||
a.offset,
|
||||
a.note,sharp_char[a.sharp+2*a.flat],
|
||||
a.octave,
|
||||
a.ed_freq,a.offset);
|
||||
total_len++;
|
||||
}
|
||||
if (b.ed_freq>=0) {
|
||||
printf("\t.byte $%02X ; B = %c%c%d\n",
|
||||
b.offset|0x40,
|
||||
b.note,sharp_char[b.sharp+2*b.flat],
|
||||
b.octave);
|
||||
total_len++;
|
||||
}
|
||||
if (c.ed_freq>=0) {
|
||||
printf("\t.byte $%02X ; C = %c%c%d freq=%d offset=%d\n",
|
||||
c.offset|0x80,
|
||||
c.note,sharp_char[c.sharp+2*c.flat],
|
||||
c.octave,
|
||||
c.ed_freq,c.offset);
|
||||
total_len++;
|
||||
}
|
||||
#endif
|
||||
current_length++;
|
||||
|
||||
|
||||
}
|
||||
|
||||
|
||||
printf("; last: a=%d c=%d len=%d\n",a_last,c_last,current_length);
|
||||
if (a_last>=0) {
|
||||
temp_value=(a_last<<3)|0;
|
||||
if (c_last<0) temp_value|=(current_length<<1);
|
||||
printf("\t.byte $%02X ; A=%d L=%d\n",
|
||||
temp_value,
|
||||
a_last,c_last>=0?0:current_length);
|
||||
total_len++;
|
||||
a_last=-1;
|
||||
}
|
||||
|
||||
if (c_last>=0) {
|
||||
printf("\t.byte $%02X ; C=%d L=%d\n",
|
||||
(unsigned char)(c_last<<3)|((current_length)<<1)|1,
|
||||
c_last,current_length);
|
||||
total_len++;
|
||||
c_last=-1;
|
||||
}
|
||||
|
||||
|
||||
// printf("\t.byte $%02X ; L = %d\n",
|
||||
// current_length|0xc0,current_length);
|
||||
// printf("\n");
|
||||
|
||||
printf("\t.byte $FF ; end\n");
|
||||
total_len++;
|
||||
|
||||
int o,n;
|
||||
|
||||
for(o=0;o<4;o++) {
|
||||
printf("; Octave %d : ",o);
|
||||
for(n=0;n<12;n++) {
|
||||
printf("%d ",notes_used[(o*12)+n]);
|
||||
}
|
||||
printf("\n");
|
||||
}
|
||||
|
||||
printf("; %d notes allocated\n",notes_allocated);
|
||||
|
||||
printf(";.byte ");
|
||||
for(n=0;n<notes_allocated;n++) {
|
||||
printf("%d,",allocated_notes[n]);
|
||||
}
|
||||
printf("\n");
|
||||
|
||||
printf("frequencies_high:\n");
|
||||
printf(".byte ");
|
||||
for(n=0;n<notes_allocated;n++) {
|
||||
printf("$%02X",(frequencies[allocated_notes[n]]>>8));
|
||||
if (n!=(notes_allocated-1)) printf(",");
|
||||
total_len++;
|
||||
}
|
||||
printf("\n");
|
||||
|
||||
|
||||
printf("frequencies_low:\n");
|
||||
printf(".byte ");
|
||||
for(n=0;n<notes_allocated;n++) {
|
||||
printf("$%02X",(frequencies[allocated_notes[n]])&0xff);
|
||||
if (n!=(notes_allocated-1)) printf(",");
|
||||
total_len++;
|
||||
}
|
||||
printf("\n");
|
||||
|
||||
printf("; total len=%d\n",total_len);
|
||||
|
||||
(void) irq;
|
||||
(void) loop;
|
||||
(void) external_frequency;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
|
@ -0,0 +1,23 @@
|
|||
tracker_init:
|
||||
|
||||
; setup initial ay-3-8910 values (this depends on song)
|
||||
|
||||
init_registers_to_zero:
|
||||
ldx #$13 ; clear more than have to for other
|
||||
lda #0 ; vars
|
||||
; sta SONG_OFFSET ; also in
|
||||
; sta SONG_COUNTDOWN
|
||||
init_loop:
|
||||
sta AY_REGS,X
|
||||
dex
|
||||
bpl init_loop
|
||||
|
||||
; jsr ay3_write_regs
|
||||
|
||||
lda #$38
|
||||
sta AY_REGS+7 ; $07 mixer (ABC on)
|
||||
; lda #$0E
|
||||
; sta AY_REGS+8 ; $08 volume A
|
||||
; lda #$0C
|
||||
; sta AY_REGS+9 ; $09 volume B
|
||||
; sta AY_REGS+10 ; $0A volume C
|
||||
|
|
@ -0,0 +1,29 @@
|
|||
; zero page
|
||||
|
||||
; pre-defined applesoft vars
|
||||
|
||||
CH = $24
|
||||
CV = $25
|
||||
GBASL = $26
|
||||
GBASH = $27
|
||||
BASL = $28
|
||||
BASH = $29
|
||||
|
||||
AY_REGS = $70
|
||||
FRAME = $80
|
||||
SONG_OFFSET = $81
|
||||
SONG_COUNTDOWN = $82
|
||||
|
||||
|
||||
OUR_ROT = $A5
|
||||
|
||||
HGR_X = $E0
|
||||
HGR_XH = $E1
|
||||
HGR_Y = $E2
|
||||
HGR_COLOR = $E4
|
||||
HGR_PAGE = $E6
|
||||
HGR_SCALE = $E7
|
||||
|
||||
COUNT = $FB
|
||||
|
||||
|
||||
Loading…
Reference in New Issue