/
phaser2.asm
567 lines (509 loc) · 8.75 KB
/
phaser2.asm
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output "phaser2.bin"
OP_INCDE equ $13
OP_DECDE equ $1b
OP_DECHL equ $2b
OP_ANDH equ $a4
OP_XORH equ $ac
OP_ORC equ $b1
OP_ORH equ $b4
; org $4000 ; Aquarius 4k cassette/cartridge
; org $c000 ; Aquarius lower 8k cartridge
org $e000 ; Aquarius upper 8k cartridge
; org $100 ; Microbee
; org $8000 ; VZ
; org $4000 ; ZX Spectrum
db 98, 117, 115, 104
db 121, 156, 50, 176
db 48, 108, 50, 100
db 50, 168, 183, 112
;Phaser2 beeper music engine by Shiru (shiru@mail.ru) 03'11
;Two channels of phase synth, per-pattern tempo
;One channel of interrupting drums
;Feel free to do whatever you want with the code, it is PD
begin
ld hl,musicData
call play
jp begin
play
di
exx
push hl
push iy
exx
ld e,(hl)
inc l
ld d,(hl)
inc l
ld (readPos.pos),de
ld e,(hl)
inc l
ld d,(hl)
ld (drumSynth.drumSettings),de
ld a,h
ld (readRow.insList0),a
ld (readRow.insList1),a
ld hl,0
ld (soundInit.ch0cnt0),hl
ld ix,0 ;ch0cnt1
ld (readRow.ch1cnt0),hl
ld iy,0 ;ch1cnt1
ld (soundInit.ch0add0),hl
ld sp,hl ;ch0add1
ld (readRow.ch1add0),hl
ld (readRow.ch1add1),hl
xor a
ld (readRow.ch0int),a
ld (readRow.ch1int),a
ld (readRow.ch0det),a
ld (readRow.ch1det),a
ld a,64
ld (readRow.ch0pha),a
ld (readRow.ch1pha),a
ld a,OP_XORH
ld (soundLoop.op0),a
ld (soundLoop.op1),a
ld hl,1000
ld (soundInit.len),hl
exx
ld hl,0 ;ch1cnt0
ld de,0 ;ch1add1
ld bc,0 ;ch1add0
exx
readPos
.pos=$+1
ld hl,0
.read
ld e,(hl)
inc l
ld d,(hl)
inc hl
ld a,d
or e
jr z,.loop
ld (.pos),hl
ex de,hl
ld e,(hl)
inc l
ld d,(hl)
inc hl
ld (soundInit.len),de
jp readRow.read
.loop
ld e,(hl)
inc l
ld d,(hl)
ex de,hl
jp .read
readRow
.pos=$+1
ld hl,0
.read
ld a,(hl)
cp 246
jp c,.ch0
cp 255
jp z,readPos
inc hl
ld (.pos),hl
sub 246
jp drumSynth
.ch0mute
ld sp,0
ld ix,0
ld (soundInit.ch0cnt0),sp
ld (soundInit.ch0add0),sp
jp .ch1
.ch1mute
exx
ld hl,0
ld d,h
ld e,h
ld b,h
ld c,h
exx
jp .ch1skip
.ch0
inc hl
add a,a
jp z,.ch1
jp nc,.note0 ;bit 7 is not set, it is a note
ex de,hl ;set instrument of channel 0
.insList0=$+1
ld h,0
ld l,a
ld a,(hl)
inc l
ld (.ch0int),a
ld a,(hl)
inc l
ld (.ch0pha),a
ld a,(hl)
ld (.ch0det),a
inc l
ld a,(hl)
ld (soundLoop.op0),a
ex de,hl
ld a,(hl)
inc hl
add a,a
.note0
cp 2
jr z,.ch0mute
ex de,hl ;then read note and check for channel two data
ld l,a
add a,a
jr nc,.ch0pskip
ld ix,(soundInit.ch0cnt0)
.ch0pha=$+1
ld a,0
add a,ixh
ld ixh,a
res 7,l
.ch0pskip
ld h,noteTable/256
ld c,(hl)
inc l
ld b,(hl)
ld (soundInit.ch0add0),bc
.ch0int=$+1
ld a,0
add a,l
ld l,a
ld b,(hl)
dec l
ld c,(hl)
.ch0det=$+1
ld hl,0
add hl,bc
ld sp,hl ;ch0add1
ex de,hl
.ch1
ld a,(hl)
inc hl
add a,a
jp z,.ch1skip
jp nc,.note1
ex de,hl ;set instrument of channel 1
.insList1=$+1
ld h,0
ld l,a
ld a,(hl)
inc l
ld (.ch1int),a
ld a,(hl)
inc l
ld (.ch1pha),a
ld a,(hl)
ld (.ch1det),a
inc l
ld a,(hl)
ld (soundLoop.op1),a
ex de,hl
ld a,(hl)
inc hl
add a,a
.note1
cp 2
jp z,.ch1mute
ex de,hl ;then read note and play a row
ld l,a
add a,a
jr nc,.ch1pskip
ld iy,(.ch1cnt0)
.ch1pha=$+1
ld a,0
add a,iyh
ld iyh,a
res 7,l
.ch1pskip
ld h,noteTable/256
ld c,(hl)
inc l
ld b,(hl)
ld (.ch1add0),bc
.ch1int=$+1
ld a,0
add a,l
ld l,a
ld b,(hl)
dec l
ld c,(hl)
.ch1det=$+1
ld hl,0
add hl,bc
ld (.ch1add1),hl
ex de,hl
exx
.ch1cnt0=$+1
ld hl,0
.ch1add1=$+1
ld de,0
.ch1add0=$+1
ld bc,0
exx
.ch1skip
ld (.pos),hl
soundInit
.skip=$+1
ld hl,0
.len=$+1
ld de,10000
ld a,h
or l
jp z,.noSkip
ld a,h
cp d
jr c,.skipHL
ld a,l
cp e
jr c,.skipHL
and a
sbc hl,de
ld (.skip),hl
jp readRow
.skipHL
ex de,hl
sbc hl,de
ex de,hl
ld hl,0
ld (.skip),hl
.noSkip
.ch0cnt0=$+1
ld hl,0
.ch0add0=$+1
ld bc,200
soundLoop
add hl,bc ;11
ld a,h ;4
add ix,sp ;15
.op0=$+1
xor ixh ;8
rla ;4
sbc a,a ;4
out ($fc),a ;11 ; Aquarius
; out ($fe),a ;11 ; ZX
; AND $21 ; VZ
; ld ($6800), a ; VZ
; out (2),a ;11 ; MICROBEE
exx ;4
add hl,bc ;11
ld a,h ;4
add iy,de ;15
.op1=$+1
xor iyh ;8
rla ;4
sbc a,a ;4
out ($fc),a ;11 ; Aquarius
; out ($fe),a ;11 ; ZX
; AND $21 ; VZ
; ld ($6800), a ; VZ
; out (2),a ;11 ; MICROBEE
exx ;4
dec de ;6
ld a,d ;4
or e ;4
jp nz,soundLoop ;10=160t
ld (soundInit.ch0cnt0),hl
jp readRow
drumSynth
ld (.prevIX),ix
ld (.prevIY),iy
add a,a
ld b,a
add a,a
add a,a
add a,b
ld b,0
ld c,a
.drumSettings=$+1
ld hl,0
add hl,bc
ld c,(hl)
inc hl
ld b,(hl)
inc hl
ld (soundInit.skip),bc
ld c,(hl)
inc hl
ld b,(hl)
inc hl
ld e,(hl)
inc hl
ld d,(hl)
inc hl
ld a,(hl)
inc hl
ld (.toneSFreq),a
ld a,(hl)
inc hl
ld (.toneSlide),a
ld a,(hl)
inc hl
ld (.noiseFrq),a
ld a,(hl)
ld (.noiseEnable),a
ld hl,0
ld ix,$0101 ; Aquarius
; ld ix,$1010 ; ZX spectrum
; ld ix,$2020 ; VZ
; ld ix,$4040 ; microbee
ld iy,0
.l0
add hl,de ;10
ld a,(iy) ;19
dec ixh ;8
jp nz,.l1 ;10
.noiseFrq=$+2
ld ixh,1 ;11
inc iy ;10
jp .l2 ;10
.l1
ld a,(iy) ;19
jr $+2 ;12
.l2
.noiseEnable=$+1
out ($fc),a ;11 ; Aquarius
; out ($fe),a ;11 ; ZX
; AND $21 ; VZ
; ld ($6800), a ; VZ
; out (2),a ;11 ; MICROBEE
dec ixl ;8
jp nz,.l3 ;10
.toneSFreq=$+2
ld ixl,5 ;11
.toneSlide=$
dec hl ;6
jp .l4 ;10
.l3
jp $+3 ;10
jp $+3 ;10
ld a,0 ;7
.l4
ld a,h ;4
rla ;4
sbc a,a ;4
out ($fc),a ;11 ; Aquarius
; out ($fe),a ;11 ; ZX
; AND $21 ; VZ
; ld ($6800), a ; VZ
; out (2),a ;11 ; MICROBEE
dec bc ;6
ld a,b ;4
or c ;4
jp nz,.l0 ;10=195t
.prevIX=$+2
ld ix,0
.prevIY=$+2
ld iy,0
jp readRow
align 256
noteTable
dw $0000,$0000
dw $00c3,$00cf,$00db,$00e9,$00f6,$0105,$0115,$0125,$0137,$0149,$015d,$0171
dw $0187,$019f,$01b7,$01d2,$01ed,$020b,$022a,$024b,$026e,$0293,$02ba,$02e3
dw $030f,$033e,$036f,$03a4,$03db,$0416,$0454,$0496,$04dc,$0526,$0574,$05c7
dw $061f,$067c,$06df,$0748,$07b7,$082c,$08a8,$092c,$09b8,$0a4c,$0ae9,$0b8f
dw $0c3f,$0cf9,$0dbf,$0e90,$0f6e,$1059,$1151,$1259,$1370,$1498,$15d2,$171e
dw $187e,$19f3,$1b7e,$1d20,$1edc,$20b2,$22a3,$24b3,$26e1,$2931,$2ba4,$2e3c
dw $30fc,$33e6,$36fc,$3a41,$3db8,$4164,$4547,$4966,$4dc3,$5263,$5748,$5c79
dw $61f9,$67cc,$6df8,$7483,$7b71,$82c8,$8a8f,$92cc,$9b86,$a4c6,$ae91,$b8f3
dw $0030,$0033,$0036,$003a,$003d,$0041,$0045,$0049,$004d,$0052,$0057,$005c ;lowest octaves
dw $0061,$0067,$006d,$0074,$007b,$0082,$008a,$0092,$009b,$00a4,$00ae,$00b8
musicData
dw .start
dw .drums
.insList
db 0 ;interval (offset from the base in semitones*2)
db 64 ;phase
db 4 ;detune (offset from the base in counter units)
db OP_ORH
db 0
db 0
db 8
db OP_XORH
.drums
;tom
dw 1000*195/160 ;length in tone samples
dw 1000 ;length in drum samples
dw 1800 ;tone div
db 1 ;slide div
db OP_DECDE ;slide direction, dec de,inc de,dec hl
db 0 ;noise div
db 0 ;noise enable
;snare
dw 1500*195/160 ;length in tone samples
dw 1500 ;length in drum samples
dw 1500 ;tone div
db 1 ;slide div
db OP_DECDE ;slide direction, dec de,inc de,dec hl
db 2 ;noise div
db 16 ;noise enable
;kick
dw 600*195/160 ;length in tone samples
dw 600 ;length in drum samples
dw 800 ;tone div
db 1 ;slide div
db OP_DECDE ;slide direction, dec de,inc de,dec hl
db 0 ;noise div
db 0 ;noise enable
;open hat
dw 400*195/160 ;length in tone samples
dw 400 ;length in drum samples
dw 0 ;tone div
db 0 ;slide div
db OP_DECHL ;slide direction, dec de,inc de,dec hl
db 1 ;noise div
db 16 ;noise enable
;closed hat
dw 100*195/160 ;length in tone samples
dw 100 ;length in drum samples
dw 0 ;tone div
db 0 ;slide div
db OP_DECHL ;slide direction, dec de,inc de,dec hl
db 1 ;noise div
db 16 ;noise enable
.start
.loop2
dw .pattern0
dw .pattern0
dw .pattern0
dw .pattern0
dw .pattern1
dw .pattern1
dw .pattern2
dw .pattern3
dw 0
dw .loop2
.pattern0
dw 5000
db 248,128+4,64+26,128+2,64+2
db 249,28,64+14
db 247,30,64+2
db 249,31,64+14
db 255
.pattern1
dw 5000
db 248,128+4,64+26,128+2,64+7
db 249,28,64+19
db 247,30,64+7
db 249,31,64+19
db 255
.pattern2
dw 5000
db 248,128+4,64+26,128+2,64+9
db 249,28,64+21
db 247,30,64+9
db 249,31,64+21
db 255
.pattern3
dw 5000/2
db 246,128+4,64+26,128+2,64+9
db 0,0
db 246,28,64+21
db 0,0
db 247,30,64+9
db 246,0,0
db 246,31,64+21
db 246,0,0
db 255
end