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;------------------------------------------------------------------------------
; YM2612 sound driver
; Written by: Phil Summers (b1ackmailer) difficultylevelhigh@gmail.com
;
;------------------------------------------------------------------------------
; References:
; https://www.smspower.org/maxim/Documents/YM2612
; https://plutiedev.com/blog/20200103
; https://www.plutiedev.com/ym2612-registers
; https://en.wikipedia.org/wiki/Scientific_pitch_notation
;------------------------------------------------------------------------------
; Octave range is A#0-B7+3/4 HBIOS note 0..343
;------------------------------------------------------------------------------
;
YMSEL .EQU VGMBASE+00H ; Primary YM2162 11000000 a1=0 a0=0
YMDAT .EQU VGMBASE+01H ; Primary YM2162 11000001 a1=0 a0=1
YM2SEL .EQU VGMBASE+02H ; Secondary YM2162 11000010 a1=1 a0=0
YM2DAT .EQU VGMBASE+03H ; Secondary YM2162 11000011 a1=1 a0=1
;------------------------------------------------------------------------------
; Device capabilities and configuration
;------------------------------------------------------------------------------
;
YM_TONECNT .EQU 6 ; Count number of tone channels
YM_NOISECNT .EQU 0 ; Count number of noise channels
;
YM_PENDING_PERIOD .DW 0 ; PENDING PERIOD (12 BITS) ; ORDER
YM_PENDING_VOLUME .DB 0 ; PENDING VOL (8 BITS) ; SIGNIFICANT
YM_PENDING_DURATION .DW 0 ; PENDING DURATION (16 BITS)
YM_READY .DB 0 ; BIT 0 -> NZ DRIVER IS READY TO RECEIVE PLAY COMMAND
; BIT 1 -> NZ EXECUTING WITHIN TIMER HANDLER = DO NOT DIS/ENABLE INT
YM_RDY_RST .DB 0 ; FLAG INDICATES IF DEVICE IS IN READY (NZ) OR RESET STATE (Z)
;
;------------------------------------------------------------------------------
; Driver function table and instance data
;------------------------------------------------------------------------------
;
YM_FNTBL: .DW YM_RESET
.DW YM_VOLUME
.DW YM_PERIOD
.DW YM_NOTE
.DW YM_PLAY
.DW YM_QUERY
.DW YM_DURATION
.DW YM_DEVICE
;
#IF (($ - YM_FNTBL) != (SND_FNCNT * 2))
.ECHO "*** INVALID SND FUNCTION TABLE ***\n"
!!!!!
#ENDIF
;
YM_IDAT .EQU 0 ; NO INSTANCE DATA FOR THIS DEVICE
;
;------------------------------------------------------------------------------
; YM2162 Initialization
; Announce device on console.
; Setup function tables. Setup the device.
; Set volume off.
; Return initialization status
;------------------------------------------------------------------------------
;
YM2612_INIT: CALL NEWLINE ; ANNOUNCE
PRTS("YM:$")
;
PRTS(" IO=0x$")
LD A,YMSEL
CALL PRTHEXBYTE
;
LD IY, YM_IDAT ; SETUP FUNCTION TABLE
LD BC, YM_FNTBL ; POINTER TO INSTANCE DATA
LD DE, YM_IDAT ; BC := FUNCTION TABLE ADDRESS
CALL SND_ADDENT ; DE := INSTANCE DATA PTR
;
YM_INIT: ld hl,ym_cfg
; call ym_prog
; ret
;
;------------------------------------------------------------------------------
; Program ym2612 with a list of register entries
;------------------------------------------------------------------------------
;
ym_prog: ld c,(hl) ; get port address
inc hl
ld d,(hl) ; count of pairs
inc hl
;
t_loop: ld a,(hl) ; get register to write
out (c),a
; call PRTHEXBYTE
inc hl
inc c
ld a,(hl) ; get value to write
out (c),a
; call PRTHEXBYTE
ld b,0 ; check device
nready1: in a,(c) ; ready with timeout
rlca ;
jr nc,ready1 ; bits 7 = busy
djnz nready1
;
; timed out
;
ready1: inc hl
dec c
dec d
jr nz,t_loop
;
ld a,(hl) ; end flag?
or a
jr nz,ym_prog ; no? restart
ret
;
;------------------------------------------------------------------------------
; Sound driver function - QUERY and subfunctions
;------------------------------------------------------------------------------
;
YM_QUERY: LD A, E
CP BF_SNDQ_CHCNT ; SUB FUNCTION 01
JR Z, YM_QUERY_CHCNT
;
CP BF_SNDQ_VOLUME ; SUB FUNCTION 02
JR Z, YM_QUERY_VOLUME
;
CP BF_SNDQ_PERIOD ; SUB FUNCTION 03
JR Z, YM_QUERY_PERIOD
;
CP BF_SNDQ_DEV ; SUB FUNCTION 04
JR Z, YM_QUERY_DEV
;
OR $FF ; SIGNAL FAILURE
RET
;
YM_QUERY_CHCNT: LD BC,(YM_TONECNT*256)+YM_NOISECNT
XOR A ; RETURN NUMBER OF TONE AND NOISE
RET ; NOISE CHANNELS IN BC
;
YM_QUERY_PERIOD:LD HL, (YM_PENDING_PERIOD) ; RETURN 16-BIT PERIOD
XOR A ; IN HL REGISTER
RET
;
YM_QUERY_VOLUME:LD A, (YM_PENDING_VOLUME) ; RETURN 8-BIT VOLUME
LD L, A ; IN L REGISTER
XOR A
; LD H, A
RET
;
YM_QUERY_DEV: LD B, SNDDEV_YM2612 ; RETURN DEVICE IDENTIFIER
LD DE, +(YMSEL*256)+YMDAT ; AND ADDRESS AND DATA PORT
LD HL, +(YM2SEL*256)+YM2DAT
XOR A
RET
;
;------------------------------------------------------------------------------
; Sound driver function - DEVICE
;------------------------------------------------------------------------------
;
YM_DEVICE: LD D,SNDDEV_YM2612 ; D := DEVICE TYPE
LD E,0 ; E := PHYSICAL UNIT
LD C,$00 ; C := DEVICE TYPE
LD H,0 ; H := MODE
LD L,YMSEL ; L := BASE I/O ADDRESS
XOR A
RET
;
;------------------------------------------------------------------------------
; Sound driver function - RESET
; Initialize device. Set volume off. Reset volume and tone variables.
;------------------------------------------------------------------------------
;
YM_RESET: ;CALL AY_CHKREDY ; RETURNS TO OUR CALLER IF NOT READY
;
PUSH DE
PUSH HL
CALL YM_INIT ; SET DEFAULT CHIP CONFIGURATION
;
XOR A ; SIGNAL SUCCESS
LD (YM_RDY_RST),A ; IN RESET STATE
LD (YM_PENDING_VOLUME),A ; SET VOLUME TO ZERO
LD H,A
LD L,A
LD (YM_PENDING_PERIOD),HL ; SET TONE PERIOD TO ZERO
;
POP HL
POP DE
RET
;
;------------------------------------------------------------------------------
; Sound driver function - VOLUME
;------------------------------------------------------------------------------
;
YM_VOLUME: LD A,L ; SAVE VOLUME
LD (YM_PENDING_VOLUME),A
XOR A ; SIGNAL SUCCESS
RET
;
;------------------------------------------------------------------------------
; Sound driver function - NOTE
;------------------------------------------------------------------------------
;
YM_NOTE: ;CALL PRTHEXWORDHL
;CALL PC_COLON
LD DE,40 ; Calculate the ym2612 block (octave)
ADD HL,DE ; This will go into b13-b11
LD DE,48 ; HL / DE
CALL DIV16 ; BC = block (octave) HL = quarter semitone note
;
ADD HL,HL
LD DE,ym_notetable ; point HL to frequency entry
ADD HL,DE ; for the quarter semitone note
;CALL PRTHEXWORDHL
;CALL PC_COLON
;CALL PRTHEXWORD
;CALL PC_COLON
;
LD A,C ; SHIFT OCTAVE INTO RIGHT POSITION
ADD A,A ; X2
ADD A,A ; X4
ADD A,A ; X8 -NEEDS TO BE OR'ED WITH HIGH BYTE
;
LD E,(HL) ; COMBINE FREQUENCY ENTRY
INC HL ; AND BLOCK (OCTAVE) IN HL
OR (HL)
LD H,A
LD L,E
;CALL PRTHEXWORDHL
;
;------------------------------------------------------------------------------
; Sound driver function - PERIOD
; The format for setting frequency on the ym2612 is 00xxxyyy-yyyyyyyy
; Where xxx us the octave and yyy-yyyyyyyy is the frequency
;------------------------------------------------------------------------------
;
YM_PERIOD: LD A, H ; IF ZERO - ERROR
OR L
JR Z, YM_PERIOD1
;
LD A, H ; MAXIMUM TONE PERIOD IS 11-BITS
AND 11000000B ; ALLOWED RANGE IS 0001-07FF (2047)
JR NZ,YM_PERIOD1 ; AND 3 BITS FOR OCTAVE (7)
LD (YM_PENDING_PERIOD),HL ; RETURN NZ IF NUMBER TOO LARGE
RET ; SAVE AND RETURN SUCCESSFUL
;
YM_PERIOD1: LD A, $FF ; REQUESTED PERIOD IS LARGER
LD (YM_PENDING_PERIOD),A ; THAN THE DEVICE CAN SUPPORT
LD (YM_PENDING_PERIOD+1),A ; SO SET PERIOD TO FFFF
RET ; AND RETURN FAILURE
;
;------------------------------------------------------------------------------
; Sound driver function - DURATION
;------------------------------------------------------------------------------
;
YM_DURATION: LD (YM_PENDING_DURATION),HL ; SET TONE DURATION
XOR A
RET
;
;------------------------------------------------------------------------------
; Sound driver function - PLAY
; D = CHANNEL
;------------------------------------------------------------------------------
;
YM_PLAY: ld hl,ym_playnote+0
ld a,d ; 000 > 000 011 > 100
cp 3 ; 001 > 001 100 > 101
ld e,part1 ; 010 > 010 101 > 110
jr c,ch012
sub 3
ld d,a ; d = 0..2
add a,4
jr ch345 ; a = 4..6
ch012: ld e,part0
ch345: ld (hl),e
ld hl,ym_playnote+3 ; setup keyon channel
ld (hl),a
ld hl,ym_playnote+11 ; setup keyoff channel
or %11110000
ld (hl),a
ld a,$a4 ; setup frequency channel
add a,d ; msb
ld hl,ym_playnote+4
ld (hl),a
ld a,$a0 ; setup frequency channel
add a,d ; lsb
ld hl,ym_playnote+6
ld (hl),a
LD A,(YM_RDY_RST) ; IF STILL IN RESET
OR A ; STATE GO SETUP FOR
CALL Z,YM_MAKE_RDY ; PLAYING
;
ld hl,(YM_PENDING_PERIOD) ; GET THE PREVIOUSLY SETUP
ld de,ym_playnote+5 ; TONE DATA AND
ld a,h
ld (de),a ; PATCH IT INTO THE
inc de ; YM2612 PLAY COMMAND
inc de
ld a,l
ld (de),a
inc de
inc de
ld A,(YM_PENDING_VOLUME) ; GET VOLUME
srl a
cpl
and %01111111 ; PATCH IT INTO THE
ld (de),a ; YM2612 PLAY COMMAND
;
ld hl,ym_playnote ; NOW PLAY IT
jp ym_prog
;
;------------------------------------------------------------------------------
; Make ready for hbios play
;------------------------------------------------------------------------------
;
YM_MAKE_RDY: CPL
LD (YM_RDY_RST),A ; Invert the ready flag
ld hl,ym_cfg_ready ; Program ym2612 for playing
jp ym_prog
;
;------------------------------------------------------------------------------
; Command sequence to play a note
;------------------------------------------------------------------------------
;
ym_playnote: .db part0, 10/2
.db $28, $00 ; [0] KEY OFF ; 00000111
.db $A4, $3F ; [0] Frequency MSB ; patch +5 ; A4+channel-1
.db $A0, $FF ; [0] Frequency LSB ; patch +7 ; A4+channel-1
.db $4C, $00 ; [0] Volume ; patch +9 ; 4C+channel-1
.db $28, $F0 ; [0] KEY ON ; 00000111
.db $00 ; End flag
;
;------------------------------------------------------------------------------
; Quarter semitone values
;------------------------------------------------------------------------------
;
ym_notetable: .dw 644 ; C ; 152
.dw 653 ; approx
.dw 663 ; approx
.dw 672 ; approx
.dw 681 ; C# ; 156
.dw 691 ; approx
.dw 702 ; approx
.dw 712 ; approx
.dw 722 ; D ; 160
.dw 733 ; approx
.dw 744 ; approx
.dw 754 ; approx
.dw 765 ; D# ; 164
.dw 776 ; approx
.dw 788 ; approx
.dw 799 ; approx
.dw 810 ; E ; 168
.dw 822 ; approx
.dw 834 ; approx
.dw 846 ; approx
.dw 858 ; F ; 172
.dw 871 ; approx
.dw 884 ; approx
.dw 897 ; approx
.dw 910 ; F# ; 176
.dw 924 ; approx
.dw 937 ; approx
.dw 951 ; approx
.dw 964 ; G ; 180
.dw 978 ; approx
.dw 993 ; approx
.dw 1007 ; approx
.dw 1021 ; G# ; 184
.dw 1036 ; approx
.dw 1051 ; approx
.dw 1066 ; approx
.dw 1081 ; A ; 188
.dw 1097 ; approx
.dw 1114 ; approx
.dw 1130 ; approx
.dw 1146 ; A# ; 192
.dw 1163 ; approx
.dw 1180 ; approx
.dw 1197 ; approx
.dw 1214 ; B ; 196
.dw 1232 ; approx
.dw 1250 ; approx
.dw 1268 ; approx
;
;------------------------------------------------------------------------------
; Register configuration data for reset state
;------------------------------------------------------------------------------
;
part0: .equ YMSEL
part1: .equ YM2SEL
;
ym_cfg: .db part0, 24/2
.db $22,$00 ; [0] lfo off
.db $27,$00 ; [0] Disable independant Channel 3
.db $28,$00 ; [0] note off ch 1
.db $28,$01 ; [0] note off ch 2
.db $28,$02 ; [0] note off ch 3
.db $28,$04 ; [0] note off ch 4
.db $28,$05 ; [0] note off ch 5
.db $28,$06 ; [0] note off ch 6
.db $2b,$00 ; [0] dac off
.db $b4,$00 ; [0] sound off ch 1-3
.db $b5,$00
.db $b6,$00
;
.db part1, 6/2
.db $b4,$00 ; [1] sound off ch 4-6
.db $b5,$00 ; [1]
.db $b6,$00 ; [1]
;
.db part0, 24/2
.db $40,$7f ; [0] ch 1-3 total level minimum
.db $41,$7f ; [0]
.db $42,$7f ; [0]
.db $44,$7f ; [0]
.db $45,$7f ; [0]
.db $46,$7f ; [0]
.db $48,$7f ; [0]
.db $49,$7f ; [0]
.db $4a,$7f ; [0]
.db $4c,$7f ; [0]
.db $4d,$7f ; [0]
.db $4e,$7f ; [0]
;
.db part1, 24/2
.db $40,$7f ; [1] ch 4-6 total level minimum
.db $41,$7f ; [1]
.db $42,$7f ; [1]
.db $44,$7f ; [1]
.db $45,$7f ; [1]
.db $46,$7f ; [1]
.db $48,$7f ; [1]
.db $49,$7f ; [1]
.db $4a,$7f ; [1]
.db $4c,$7f ; [1]
.db $4d,$7f ; [1]
.db $4e,$7f ; [1]
;
.db $00 ; End flag
;
;------------------------------------------------------------------------------
; Register configuration data for play
;------------------------------------------------------------------------------
;
;ym_cfg_ready: .db part0, 20/2
.db $22, $00 ; [0] Global: LFO disable
.db $B0, $30 ; [0] Algorithm, Feedback <- pure sine wave
.db $3C, $01 ; [0] Operator 4.MUL = 1
.db $B4, $C0 ; [0] Stereo output
.db $44, $7F ; [0] Mute operator 3 <- pure sine wave
.db $4C, $00 ; [0] Max volume for operator 4
.db $5C, $1F ; [0] Operator 4.AR = shortest
.db $6C, $06 ; [0] Operator 4.D1R= 6
.db $7C, $1F ; [0] Operator 4.D2R= 31
.db $8C, $FF ; [0] Operator 4.SL = 15 / Operator4. RR=15
; .db $A4, $3F ; [0] Frequency MSB
; .db $A0, 84;$FF ; [0] Frequency LSB
; .db $28, $00 ; [0] KEY OFF
; .db $28, $F0 ; [0] KEY ON
;
.db $00 ; End flag
;
ym_cfg_ready: .db part0, 2/2
.db $22, $00 ; Global: LFO disable
;
.db part0, 6/2
.db $B0,$30 ; Channel 1-3
.db $b1,$30 ; Algorithm 0 S1>S2>S3>S4
.db $b2,$30 ; Feedback pure sine wave
;
.db part1, 6/2
.db $B0,$30 ; Channel 4-6
.db $b1,$30 ; Algorithm 0 S1>S2>S3>S4
.db $b2,$30 ; Feedback pure sine wave
;
.db part0, 6/2
.db $3c, $01 ; Channel 1-3
.db $3d, $01 ; Operator 4.MUL = 1
.db $3e, $01
;
.db part1, 6/2
.db $3c, $01 ; Channel 4-6
.db $3d, $01 ; Operator 4.MUL = 1
.db $3e, $01
;
.db part0, 6/2
.db $b4,%10000000 ; Channel 1-3
.db $b5,%10000000 ; Left Channel
.db $b6,%10000000
;
.db part1, 6/2
.db $b4,%01000000 ; Channel 4-6
.db $b5,%01000000 ; Right Channel
.db $b6,%01000000
;
.db part0, 6/2
.db $44, $7F ; Channel 1-3
.db $45, $7F ; Mute operator 3 <- pure sine wave
.db $46, $7F
;
.db part1, 6/2
.db $44, $7F ; Channel 4-6
.db $45, $7F ; Mute operator 3 <- pure sine wave
.db $46, $7F
;
.db part0, 6/2
.db $4C, $00 ; Channel 1-3
.db $4d, $00 ; Max volume for operator 4
.db $4e, $00
;
.db part1, 6/2
.db $4C, $00 ; Channel 4-6
.db $4d, $00 ; Max volume for operator 4
.db $4e, $00
;
.db part0, 6/2
.db $5C, $1F ; Channel 1-3
.db $5d, $1F ; Operator 4.AR = shortest
.db $5e, $1F
;
.db part1, 6/2
.db $5C, $1F ; Channel 4-6
.db $5d, $1F ; Operator 4.AR = shortest
.db $5e, $1F
;
.db part0, 6/2
.db $6C, $06 ; Channel 1-3
.db $6d, $06 ; Operator 4.D1R= 6
.db $6e, $06
;
.db part1, 6/2
.db $6C, $06 ; Channel 4-6
.db $6d, $06 ; Operator 4.D1R= 6
.db $6e, $06
;
.db part0, 6/2
.db $7C, $1F ; Channel 1-3
.db $7d, $1F ; Operator 4.D2R= 31
.db $7e, $1F
;
.db part1, 6/2
.db $7C, $1F ; Channel 4-6
.db $7d, $1F ; Operator 4.D2R= 31
.db $7e, $1F
;
.db part0, 6/2
.db $8C, $FF ; Channel 1-3
.db $8d, $FF ; Operator 4.SL = 15 / Operator4. RR=15
.db $8e, $FF
;
.db part1, 6/2
.db $8C, $FF ; Channel 4-6
.db $8d, $FF ; Operator 4.SL = 15 / Operator4. RR=15
.db $8e, $FF
;
.db $00 ; End flag
;
;------------------------------------------------------------------------------
; Register configuration data for hard reset
;------------------------------------------------------------------------------
;
#IF (0)
ym_cfg_full: .db $22,$00 ; [0] lfo off
.db $27,$00 ; [0] Disable independant Channel 3
.db $28,$00 ; [0] note off ch 1
.db $28,$01 ; [0] note off ch 2
.db $28,$02 ; [0] note off ch 3
.db $28,$04 ; [0] note off ch 4
.db $28,$05 ; [0] note off ch 5
.db $28,$06 ; [0] note off ch 6
.db $2b,$00 ; [0] dac off
.db $b4,$00 ; [0] sound off ch 1-3
.db $b5,$00 ; [0]
.db $b6,$00 ; [0]
s2: .db $b4,$00 ; [1] sound off ch 4-6
.db $b5,$00 ; [1]
.db $b6,$00 ; [1]
s3: .db $40,$7f ; [0] ch 1-3 total level minimum
.db $41,$7f ; [0]
.db $42,$7f ; [0]
.db $44,$7f ; [0]
.db $45,$7f ; [0]
.db $46,$7f ; [0]
.db $48,$7f ; [0]
.db $49,$7f ; [0]
.db $4a,$7f ; [0]
.db $4c,$7f ; [0]
.db $4d,$7f ; [0]
.db $4e,$7f ; [0]
s4:
.db $40,$7f ; [1] ch 4-6 total level minimum
.db $41,$7f ; [1]
.db $42,$7f ; [1]
.db $44,$7f ; [1]
.db $45,$7f ; [1]
.db $46,$7f ; [1]
.db $48,$7f ; [1]
.db $49,$7f ; [1]
.db $4a,$7f ; [1]
.db $4c,$7f ; [1]
.db $4d,$7f ; [1]
.db $4e,$7f ; [1]
s5:
.db $2a,$00 ; [0] ; dac value
.db $24,$00 ; [0] ; timer A frequency
.db $25,$00 ; [0] ; timer A frequency
.db $26,$00 ; [0] ; time B frequency
.db $30,$00 ; [0] ; ch 1-3 multiply & detune
.db $31,$00 ; [0]
.db $32,$00 ; [0]
.db $34,$00 ; [0]
.db $35,$00 ; [0]
.db $36,$00 ; [0]
.db $38,$00 ; [0]
.db $39,$00 ; [0]
.db $3a,$00 ; [0]
.db $3c,$00 ; [0]
.db $3d,$00 ; [0]
.db $3e,$00 ; [0]
s6:
.db $30,$00 ; [1] ch 4-6 multiply & detune
.db $31,$00 ; [1]
.db $32,$00 ; [1]
.db $34,$00 ; [1]
.db $35,$00 ; [1]
.db $36,$00 ; [1]
.db $38,$00 ; [1]
.db $39,$00 ; [1]
.db $3a,$00 ; [1]
.db $3c,$00 ; [1]
.db $3d,$00 ; [1]
.db $3e,$00 ; [1]
s7:
.db $50,$00 ; [0] ch 1-3 attack rate and scaling
.db $51,$00 ; [0]
.db $52,$00 ; [0]
.db $54,$00 ; [0]
.db $55,$00 ; [0]
.db $56,$00 ; [0]
.db $58,$00 ; [0]
.db $59,$00 ; [0]
.db $5a,$00 ; [0]
.db $5c,$00 ; [0]
.db $5d,$00 ; [0]
.db $5e,$00 ; [0]
s8:
.db $50,$00 ; [1] ch 4-6 attack rate and scaling
.db $51,$00 ; [1]
.db $52,$00 ; [1]
.db $54,$00 ; [1]
.db $55,$00 ; [1]
.db $56,$00 ; [1]
.db $58,$00 ; [1]
.db $59,$00 ; [1]
.db $5a,$00 ; [1]
.db $5c,$00 ; [1]
.db $5d,$00 ; [1]
.db $5e,$00 ; [1]
s9:
.db $60,$00 ; [0] ch 1-3 decay rate and am enable
.db $61,$00 ; [0]
.db $62,$00 ; [0]
.db $64,$00 ; [0]
.db $65,$00 ; [0]
.db $66,$00 ; [0]
.db $68,$00 ; [0]
.db $69,$00 ; [0]
.db $6a,$00 ; [0]
.db $6c,$00 ; [0]
.db $6d,$00 ; [0]
.db $6e,$00 ; [0]
s10:
.db $60,$00 ; [1] ch 4-6 decay rate and am enable
.db $61,$00 ; [1]
.db $62,$00 ; [1]
.db $64,$00 ; [1]
.db $65,$00 ; [1]
.db $66,$00 ; [1]
.db $68,$00 ; [1]
.db $69,$00 ; [1]
.db $6a,$00 ; [1]
.db $6c,$00 ; [1]
.db $6d,$00 ; [1]
.db $6e,$00 ; [1]
s11:
.db $70,$00 ; [0] ch 1-3 sustain rate
.db $71,$00 ; [0]
.db $72,$00 ; [0]
.db $74,$00 ; [0]
.db $75,$00 ; [0]
.db $76,$00 ; [0]
.db $78,$00 ; [0]
.db $79,$00 ; [0]
.db $7a,$00 ; [0]
.db $7c,$00 ; [0]
.db $7d,$00 ; [0]
.db $7e,$00 ; [0]
s12:
.db $70,$00 ; [1] ch 4-6 sustain rate
.db $71,$00 ; [1]
.db $72,$00 ; [1]
.db $74,$00 ; [1]
.db $75,$00 ; [1]
.db $76,$00 ; [1]
.db $78,$00 ; [1]
.db $79,$00 ; [1]
.db $7a,$00 ; [1]
.db $7c,$00 ; [1]
.db $7d,$00 ; [1]
.db $7e,$00 ; [1]
s13:
.db $80,$00 ; [0] ch 1-3 release rate and sustain level
.db $81,$00 ; [0]
.db $82,$00 ; [0]
.db $84,$00 ; [0]
.db $85,$00 ; [0]
.db $86,$00 ; [0]
.db $88,$00 ; [0]
.db $89,$00 ; [0]
.db $8a,$00 ; [0]
.db $8c,$00 ; [0]
.db $8d,$00 ; [0]
.db $8e,$00 ; [0]
s14:
.db $80,$00 ; [1] ch 4-6 release rate and sustain level
.db $81,$00 ; [1]
.db $82,$00 ; [1]
.db $84,$00 ; [1]
.db $85,$00 ; [1]
.db $86,$00 ; [1]
.db $88,$00 ; [1]
.db $89,$00 ; [1]
.db $8a,$00 ; [1]
.db $8c,$00 ; [1]
.db $8d,$00 ; [1]
.db $8e,$00 ; [1]
s15:
.db $90,$00 ; [0] ch 1-3 ssg-eg
.db $91,$00 ; [0]
.db $92,$00 ; [0]
.db $94,$00 ; [0]
.db $95,$00 ; [0]
.db $96,$00 ; [0]
.db $98,$00 ; [0]
.db $99,$00 ; [0]
.db $9a,$00 ; [0]
.db $9c,$00 ; [0]
.db $9d,$00 ; [0]
.db $9e,$00 ; [0]
s16:
.db $90,$00 ; [1] ch 4-6 ssg-eg
.db $91,$00 ; [1]
.db $92,$00 ; [1]
.db $94,$00 ; [1]
.db $95,$00 ; [1]
.db $96,$00 ; [1]
.db $98,$00 ; [1]
.db $99,$00 ; [1]
.db $9a,$00 ; [1]
.db $9c,$00 ; [1]
.db $9d,$00 ; [1]
.db $9e,$00 ; [1]
s17:
.db $a0,$00 ; [0] ch 1-3 frequency
.db $a1,$00 ; [0]
.db $a2,$00 ; [0]
.db $a4,$00 ; [0]
.db $a5,$00 ; [0]
.db $a6,$00 ; [0]
; .db $a8,$00 ; [0] ch 3 special mode
; .db $a9,$00 ; [0]
; .db $aa,$00 ; [0]
; .db $ac,$00 ; [0]
; .db $ad,$00 ; [0]
; .db $ae,$00 ; [0]
s18:
.db $a0,$00 ; [1] ch 4-6 frequency
.db $a1,$00 ; [1]
.db $a2,$00 ; [1]
.db $a4,$00 ; [1]
.db $a5,$00 ; [1]
.db $a6,$00 ; [1]
; .db $a8,$00 ; [1] ch 3 special mode
; .db $a9,$00 ; [1]
; .db $aa,$00 ; [1]
; .db $ac,$00 ; [1]
; .db $ad,$00 ; [1]
; .db $ae,$00 ; [1]
s19:
.db $b0,$00 ; [0] ch 1-3 algorith + feedback
.db $b1,$00 ; [0]
.db $b2,$00 ; [0]
s20:
.db $b0,$00 ; [1] ch 4-6 algorith + feedback
.db $b1,$00 ; [1]
.db $b2,$00 ; [1]
;
.db $00 ; End flag
s21:
#ENDIF