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promixplayer.a
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1996-06-18
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;============================================================================
; promixplayer.a
; ~~~~~~~~~~~~~~
; $VER: promixplayer 7.1 (14.6.1996)
;
; The music player routine for MMD2/MMD3 OctaMED
; 1-64 channel modules using the mixing mode.
;
; Copyright © 1995-1996 Teijo Kinnunen and RBF Software.
;
; Written by Teijo Kinnunen.
; Technical comments/questions/bug reports can be sent to:
; Teijo Kinnunen
; Oksantie 19
; FIN-86300 OULAINEN
; FINLAND
; email: Teijo.Kinnunen@oulu.fi
;
; See OctaMED docs for conditions about using these routines.
; Comments/questions about distribution and usage conditions
; should be directed to RBF Software.
;
; (Email: rbfsoft@octamed.co.uk or rbfsoft@cix.compulink.co.uk)
;
;============================================================================
;****** Feature control ******
;
MIDI EQU 0 ;1 = include MIDI code
AUDDEV EQU 1 ;1 = allocate channels using audio.device
SYNTH EQU 1 ;1 = include synth-sound handler
CHECK EQU 1 ;1 = do range checkings (track, sample in mem etc.)
RELVOL EQU 1 ;1 = include relative volume handling code
HOLD EQU 1 ;1 = handle hold/decay
;
; The less features you include, the faster and shorter the play-routine
; will be.
;
;============================================================================
INCLUDE "chinfo.i"
; The MMD structure offsets
mmd_id EQU 0
mmd_modlen EQU 4
mmd_songinfo EQU 8
; these two for MMD2s only!
mmd_psecnum EQU 12
mmd_pseq EQU 14
;
mmd_blockarr EQU 16
mmd_smplarr EQU 24
mmd_expdata EQU 32
mmd_pstate EQU 40 ; <0 = play song, 0 = don't play, >0 = play block
mmd_pblock EQU 42
mmd_pline EQU 44
mmd_pseqnum EQU 46
mmd_counter EQU 50
mmd_songsleft EQU 51
INCLUDE "medtrkdata.i"
; Instrument data
inst_repeat EQU 0
inst_replen EQU 2
inst_midich EQU 4
inst_midipreset EQU 5
inst_svol EQU 6
inst_strans EQU 7
; Audio hardware offsets
ac_ptr EQU $00
ac_len EQU $04
ac_per EQU $06
ac_vol EQU $08
AUDIO_CONST EQU 3579545
; Maximum number of tracks allowed. If you don't need this much tracks,
; you can decrease the number to save some space. (Be sure that the
; song really has no more than MAX_NUMTRACKS tracks. Minimum allowed
; value = 4.)
MAX_NUMTRACKS EQU 64
; This value is used for MMD0/1 conversion. If MAX_NUMTRACKS <= 16,
; this should be the same. If MAX_NUMTRACKS > 16, this should be 16.
MAX_MMD1_TRACKS EQU 16
SECTION "text",CODE
; -------- _ChannelOff: Turn off a channel -------------------------------
_ChannelOff: ;d0 = channel #
lea DB,a0
lea trackdataptrs-DB(a0),a1
lsl.w #2,d0
adda.w d0,a1
lsr.w #2,d0
movea.l (a1),a1
move.b trk_outputdev(a1),d1
bne.s choff_exit
IFNE MIDI
move.b trk_prevmidin(a1),d1 ;first: is it MIDI??
bne.s choff_ismidi ;not a midi note
ENDC
move.l d7,-(sp)
move.w d0,d7
movea.l a1,a5
XREF _ChOff_mix
jsr _ChOff_mix(pc)
move.l (sp)+,d7
; -------- TURN OFF AMIGA-CHANNEL ----------------------------------------
IFNE SYNTH
clr.l trk_synthptr(a1)
clr.b trk_synthtype(a1)
ENDC
clr.w trk_soffset(a1)
choff_exit rts
IFNE MIDI
; -------- TURN OFF MIDI TRACK -------------------------------------------
choff_ismidi lea noteondata-DB(a0),a0
choff_midi: clr.b trk_prevmidin(a1)
move.b d1,1(a0)
bmi.s choff_exit
move.b trk_prevmidich(a1),(a0) ;prev midi channel
clr.b 2(a0)
or.b #$90,(a0) ;note off
moveq #3,d0
bra.w _AddMIDIData
ENDC
; -------- SoundOff: Turn off all channels -------------------------------
SoundOff: movem.l d2/a5,-(sp)
moveq #MAX_NUMTRACKS-1,d2
SO_loop0 move.l d2,d0
bsr.s _ChannelOff
dbf d2,SO_loop0
clr.l _module ;play nothing
movem.l (sp)+,d2/a5
SO_rts rts
; -------- _PlayNote: The note playing routine ---------------------------
_PlayNote: ;d7(w) = trk #, d1 = note #, d3(w) = instr # a3 = addr of instr
; -------- CHECK INSTRUMENT (existence, type) ----------------------------
move.l a3,d4
beq.s SO_rts
moveq #0,d4
bset d7,d4 ;d4 is mask for this channel
movea.l mmd_smplarr(a2),a0
add.w d3,d3 ;d3 = instr.num << 2
add.w d3,d3
move.l 0(a0,d3.w),d5 ;get address of instrument
IFNE MIDI
bne.s inmem
tst.b inst_midich(a3) ;is MIDI channel set?
ENDC
IFNE CHECK
beq.w pnote_rts ; NO!!!
ENDC
; -------- ADD TRANSPOSE -------------------------------------------------
inmem add.b msng_playtransp(a4),d1 ;add play transpose
add.b inst_strans(a3),d1 ;and instr. transpose
move.b trk_outputdev(a5),d3
beq.s pn_offami
bra.s noprevmidi ;dunno.. unsupported type
; -------- TURN OFF CHANNEL DMA, IF REQUIRED -----------------------------
pn_offami cmp.w maxaudiotrk-DB(a6),d7
bge.s nodmaoff
move.l d5,a1
IFNE SYNTH
tst.l d5
beq.s stpdma
tst.b trk_synthtype(a5)
ble.s stpdma ;prev. type = sample/hybrid
cmp.w #-1,4(a1) ;type == SYNTHETIC??
beq.s nostpdma
ENDC
stpdma: move.w d1,-(sp)
XREF _MixPrepSynth
jsr _MixPrepSynth(pc)
move.w (sp)+,d1
nostpdma:
IFNE SYNTH
clr.l trk_synthptr(a5)
ENDC
nodmaoff: subq.b #1,d1
IFNE MIDI
; -------- KILL PREVIOUS MIDI NOTE ---------------------------------------
move.b trk_prevmidin(a5),d3 ;get prev. midi note
beq.s noprevmidi
clr.b trk_prevmidin(a5)
lea noteondata+2-DB(a6),a0
clr.b (a0)
move.b d3,-(a0)
bmi.s noprevmidi
move.b trk_prevmidich(a5),-(a0) ;prev midi channel
or.b #$90,(a0) ;note off
move.w d1,-(sp)
moveq #3,d0
bsr.w _AddMIDId
move.w (sp)+,d1
noprevmidi
; -------- IF MIDI NOTE, CALL MIDI NOTE ROUTINE --------------------------
tst.b inst_midich(a3)
bne.w handleMIDInote
ENDC
; -------- TEST OUTPUT DEVICE AND BRANCH IF NOT STD ----------------------
IFEQ MIDI
noprevmidi
ENDC
; -------- SET SOME AMIGA-CHANNEL PARAMETERS -----------------------------
IFNE CHECK
cmp.w maxaudiotrk-DB(a6),d7
bge.w pnote_rts ;no Amiga instruments here!!!
ENDC
IFNE HOLD
clr.b trk_fadespd(a5) ;no fade yet..
move.b trk_initdecay(a5),trk_decay(a5) ;set decay
ENDC
clr.w trk_vibroffs(a5) ;clr vibrato/tremolo offset
move.l d5,a0
IFNE SYNTH
; -------- IF SYNTH NOTE, CALL SYNTH ROUTINE -----------------------------
tst.w 4(a0)
bmi.w handleSynthnote
clr.b trk_synthtype(a5)
ENDC
XREF _PlayNoteMix
pn_hybrid jsr _PlayNoteMix(pc)
IFNE SYNTH
tst.b trk_synthtype(a5)
bne.w hSn2
ENDC
pnote_rts rts
handlenonstdout
rts
IFNE MIDI
; -------- MIDI NOTE PLAYER ROUTINE --------------------------------------
handleMIDInote:
; -------- CHECK & SCALE VOLUME ------------------------------------------
move.b trk_prevvol(a5),d2 ;temporarily save the volume
IFNE RELVOL
; -------- GetRelVol: Calculate track volume -----------------------------
ext.w d2
mulu trk_trackvol(a5),d2
lsr.w #7,d2
ENDC
IFEQ RELVOL
lsl.b #1,d2
ENDC
subq.b #1,d2 ;if 128 => 127
bpl.s hmn_notvolu0
moveq #0,d2
hmn_notvolu0
moveq #0,d5
; -------- CHECK MIDI CHANNEL --------------------------------------------
move.b inst_midich(a3),d5 ;get midi chan of this instrument
bpl.s hmn_nosmof ;bit 7 clear
clr.b trk_prevmidin(a5) ;suppress note off!
bra.s hmn_smof
hmn_nosmof move.b d1,trk_prevmidin(a5)
hmn_smof and.b #$1F,d5 ;clear all flag bits etc...
subq.b #1,d5 ;from 1-16 to 0-15
move.b d5,trk_prevmidich(a5) ;save to prev midi channel
; -------- CHECK MIDI PRESET ---------------------------------------------
moveq #0,d0
move.b trk_previnstr(a5),d0
add.w d0,d0
lea ext_midipsets-DB(a6),a1
move.w 0(a1,d0.w),d0 ;get preset #
beq.s nochgpres ;zero = no preset
lea prevmidicpres-DB(a6),a1
adda.w d5,a1
adda.w d5,a1
cmp.w (a1),d0 ;is this previous preset ??
beq.s nochgpres ;yes...no need to change
move.w d0,(a1) ;save preset to prevmidicpres
subq.w #1,d0 ;sub 1 to get 0 - 127
btst #6,inst_midich(a3)
bne.s hmn_extpreset
; -------- PREPARE PRESET CHANGE COMMAND ---------------------------------
hmn_ordpreset lea preschgdata+1-DB(a6),a0
move.b d0,(a0) ;push the number to second byte
moveq #2,d0
hmn_sendpreset move.b #$c0,-(a0) ;command: $C
or.b d5,(a0) ;"or" midi channel
move.w d1,-(sp)
bsr.w _AddMIDId
move.w (sp)+,d1
tst.b d2
beq.s hmn_suppress ;vol = 0, don't send NOTE ON
; -------- PREPARE & SEND NOTE ON COMMAND --------------------------------
nochgpres lea bytesinnotebuff-DB(a6),a0
movea.l a0,a1
adda.w (a0)+,a0
or.b #$90,d5 ;MIDI: Note on
move.b d5,(a0)+ ;MIDI msg Note on & channel
move.b d1,(a0)+ ;MIDI msg note #
move.b d2,(a0) ;MIDI msg volume
beq.s hmn_suppress ;vol = 0 -> no note
addq.w #3,(a1)
rts
hmn_suppress st trk_prevmidin(a5)
rts
; -------- HANDLE EXTENDED PRESET ----------------------------------------
hmn_extpreset cmp.w #100,d0
blt.s hmn_ordpreset
moveq #99,d3
hmn_loop100 sub.w #100,d0
addq.b #1,d3
cmp.w #100,d0
bge.s hmn_loop100
lea preschgdata+2-DB(a6),a0
move.b d0,(a0) ;push the <= 99 number
move.b d3,-(a0) ;push the >= 100 number
moveq #3,d0
bra.s hmn_sendpreset
ENDC
IFNE SYNTH
; -------- TRIGGER SYNTH NOTE, CLEAR PARAMETERS --------------------------
handleSynthnote move.b d1,trk_prevnote2(a5)
move.l a0,trk_synthptr(a5)
cmp.w #-2,4(a0) ;HYBRID??
bne.s hSn_nossn
st trk_synthtype(a5)
movea.l 278(a0),a0 ;yep, get the waveform pointer
bra.w pn_hybrid ;go and play it
hSn_nossn: move.b #1,trk_synthtype(a5)
lea _freq_tables+32-DB(a6),a1
move.b trk_finetune(a5),d0 ;finetune value
add.b d0,d0
add.b d0,d0 ;multiple by 4...
ext.w d0 ;extend
movea.l 0(a1,d0.w),a1 ;period table address
move.l a1,trk_periodtbl(a5) ;save table ptr for synth periods
add.w d1,d1
move.w 0(a1,d1.w),d1
move.w d1,trk_prevper(a5)
clr.l trk_sampleptr(a5)
hSn2: lea trk_arpgoffs(a5),a1
clr.l (a1)+
clr.l (a1)+
btst #0,trk_miscflags(a5)
bne.s hSn_cmdE ;cmd E given, don't clear trk_wfcmd!
clr.w (a1)
hSn_cmdE addq.l #2,a1
clr.w (a1)+
clr.l (a1)+
clr.l (a1)+
clr.l (a1)+
move.l #sinetable,(a1)+
clr.w (a1)+
movea.l trk_synthptr(a5),a0
move.w 18(a0),(a1)+
clr.b (a1)
moveq #64,d4
rts
synth_start move.w trk_prevper(a5),d5
synth_start2 move.l d0,a0
; -------- SYNTHSOUND VOLUME SEQUENCE HANDLING ---------------------------
subq.b #1,trk_volxcnt(a5) ;decrease execute counter..
bgt.w synth_wftbl ;not 0...go to waveform
move.b trk_initvolxspd(a5),trk_volxcnt(a5) ;reset counter
move.b trk_volchgspd(a5),d0 ;volume change??
beq.s synth_nochgvol ;no.
add.b trk_synvol(a5),d0 ;add previous volume
bpl.s synth_voln2l ;not negative
moveq #0,d0 ;was negative => 0
synth_voln2l cmp.b #$40,d0 ;too high??
ble.s synth_voln2h ;not 2 high.
moveq #$40,d0 ;was 2 high => 64
synth_voln2h move.b d0,trk_synvol(a5) ;remember new...
synth_nochgvol move.l trk_envptr(a5),d1 ;envelope pointer
beq.s synth_novolenv
movea.l d1,a1
move.b (a1)+,d0
add.b #128,d0
lsr.b #2,d0
move.b d0,trk_synvol(a5)
addq.b #1,trk_envcount(a5)
bpl.s synth_endenv
clr.b trk_envcount(a5)
move.l trk_envrestart(a5),a1
synth_endenv move.l a1,trk_envptr(a5)
synth_novolenv move.w trk_volcmd(a5),d0 ;get table position ptr
tst.b trk_volwait(a5) ;WAI(t) active
beq.s synth_getvolcmd ;no
subq.b #1,trk_volwait(a5) ;yep, decr wait ctr
ble.s synth_getvolcmd ;0 => continue
bra.w synth_wftbl ;> 0 => still wait
synth_inccnt addq.b #1,d0
synth_getvolcmd addq.b #1,d0 ;advance pointer
move.b 21(a0,d0.w),d1 ;get command
bmi.s synth_cmd ;negative = command
move.b d1,trk_synvol(a5) ;set synthvol
bra.w synth_endvol ;end of volume executing
synth_cmd and.w #$000f,d1
add.b d1,d1
move.w synth_vtbl(pc,d1.w),d1
jmp syv(pc,d1.w)
synth_vtbl dc.w syv_f0-syv,syv_f1-syv,syv_f2-syv,syv_f3-syv
dc.w syv_f4-syv,syv_f5-syv,syv_f6-syv
dc.w synth_endvol-syv,synth_endvol-syv,synth_endvol-syv
dc.w syv_fa-syv,syv_ff-syv,synth_endvol-syv
dc.w synth_endvol-syv,syv_fe-syv,syv_ff-syv
; -------- VOLUME SEQUENCE COMMANDS --------------------------------------
syv
syv_fe move.b 22(a0,d0.w),d0 ;JMP
bra.s synth_getvolcmd
syv_f0 move.b 22(a0,d0.w),trk_initvolxspd(a5) ;change volume ex. speed
bra.s synth_inccnt
syv_f1 move.b 22(a0,d0.w),trk_volwait(a5) ;WAI(t)
addq.b #1,d0
bra.s synth_endvol
syv_f3 move.b 22(a0,d0.w),trk_volchgspd(a5) ;set volume slide up
bra.s synth_inccnt
syv_f2 move.b 22(a0,d0.w),d1
neg.b d1
move.b d1,trk_volchgspd(a5) ;set volume slide down
bra.s synth_inccnt
syv_fa move.b 22(a0,d0.w),trk_wfcmd+1(a5) ;JWS (jump wform sequence)
clr.b trk_wfwait(a5)
bra.s synth_inccnt
syv_f4 move.b 22(a0,d0.w),d1
bsr.s synth_getwf
clr.l trk_envrestart(a5)
syv_f4end move.l a1,trk_envptr(a5)
clr.b trk_envcount(a5)
bra.w synth_inccnt
syv_f5 move.b 22(a0,d0.w),d1
bsr.s synth_getwf
move.l a1,trk_envrestart(a5)
bra.s syv_f4end
syv_f6 clr.l trk_envptr(a5)
bra.w synth_getvolcmd
synth_getwf ext.w d1 ;d1 = wform number, returns ptr in a1
add.w d1,d1 ;create index
add.w d1,d1
lea 278(a0),a1
adda.w d1,a1
movea.l (a1),a1 ;get wform address
addq.l #2,a1 ;skip length
rts
syv_ff subq.b #1,d0
synth_endvol move.w d0,trk_volcmd(a5)
synth_wftbl moveq #0,d0
move.b trk_synvol(a5),d0
moveq #0,d1
move.b trk_prevvol(a5),d1
mulu d0,d1
asr.w #6,d1
move.b d1,trk_tempvol(a5)
adda.w #158,a0
; -------- SYNTHSOUND WAVEFORM SEQUENCE HANDLING -------------------------
subq.b #1,trk_wfxcnt(a5) ;decr. wf speed counter
bgt.w synth_arpeggio ;not yet...
move.b trk_initwfxspd(a5),trk_wfxcnt(a5) ;restore speed counter
move.w trk_wfcmd(a5),d0 ;get table pos offset
move.w trk_wfchgspd(a5),d1 ;CHU/CHD ??
beq.s synth_tstwfwai ;0 = no change
wytanwet add.w trk_perchg(a5),d1 ;add value to current change
move.w d1,trk_perchg(a5) ;remember amount of change
synth_tstwfwai tst.b trk_wfwait(a5) ;WAI ??
beq.s synth_getwfcmd ;not waiting...
subq.b #1,trk_wfwait(a5) ;decr wait counter
beq.s synth_getwfcmd ;waiting finished
bra.w synth_arpeggio ;still sleep...
synth_incwfc addq.b #1,d0
synth_getwfcmd addq.b #1,d0 ;advance position counter
move.b -9(a0,d0.w),d1 ;get command
bmi.s synth_wfcmd ;negative = command
ext.w d1
add.w d1,d1
add.w d1,d1
movea.l 120(a0,d1.w),a1
synth_setmixwf XREF _MixSetSynthWF
move.l d0,-(sp)
move.l a0,-(sp)
jsr _MixSetSynthWF(pc)
move.l (sp)+,a0
move.l (sp)+,d0
bra.w synth_wfend ;no new commands now...
synth_wfcmd and.w #$000f,d1 ;get the right nibble
add.b d1,d1 ;* 2
move.w synth_wfctbl(pc,d1.w),d1
jmp syw(pc,d1.w) ;jump to command
synth_wfctbl dc.w syw_f0-syw,syw_f1-syw,syw_f2-syw,syw_f3-syw,syw_f4-syw
dc.w syw_f5-syw,syw_f6-syw,syw_f7-syw,synth_wfend-syw
dc.w synth_wfend-syw,syw_fa-syw,syw_ff-syw
dc.w syw_fc-syw,synth_getwfcmd-syw,syw_fe-syw,syw_ff-syw
; -------- WAVEFORM SEQUENCE COMMANDS ------------------------------------
syw
syw_f7 move.b -8(a0,d0.w),d1
ext.w d1
add.w d1,d1
add.w d1,d1
movea.l 120(a0,d1.w),a1
addq.l #2,a1
move.l a1,trk_synvibwf(a5)
bra.s synth_incwfc
syw_fe move.b -8(a0,d0.w),d0 ;jump (JMP)
bra.s synth_getwfcmd
syw_fc move.w d0,trk_arpsoffs(a5) ;new arpeggio begin
move.w d0,trk_arpgoffs(a5)
synth_findare addq.b #1,d0
tst.b -9(a0,d0.w)
bpl.s synth_findare
bra.s synth_getwfcmd
syw_f0 move.b -8(a0,d0.w),trk_initwfxspd(a5) ;new waveform speed
bra synth_incwfc
syw_f1 move.b -8(a0,d0.w),trk_wfwait(a5) ;wait waveform
addq.b #1,d0
bra.s synth_wfend
syw_f4 move.b -8(a0,d0.w),trk_synvibdep+1(a5) ;set vibrato depth
bra.w synth_incwfc
syw_f5 move.b -8(a0,d0.w),trk_synthvibspd+1(a5) ;set vibrato speed
addq.b #1,trk_synthvibspd+1(a5)
bra.w synth_incwfc
syw_f2 moveq #0,d1 ;set slide down
move.b -8(a0,d0.w),d1
synth_setsld move.w d1,trk_wfchgspd(a5)
bra.w synth_incwfc
syw_f3 move.b -8(a0,d0.w),d1 ;set slide up
neg.b d1
ext.w d1
bra.s synth_setsld
syw_f6 clr.w trk_perchg(a5) ;reset period
move.w trk_prevper(a5),d5
bra.w synth_getwfcmd
syw_fa move.b -8(a0,d0.w),trk_volcmd+1(a5) ;JVS (jump volume sequence)
clr.b trk_volwait(a5)
bra.w synth_incwfc
syw_ff subq.b #1,d0 ;pointer = END - 1
synth_wfend move.w d0,trk_wfcmd(a5)
; -------- HANDLE SYNTHSOUND ARPEGGIO ------------------------------------
synth_arpeggio move.w trk_arpgoffs(a5),d1
beq.s synth_vibrato
moveq #0,d0
move.b -8(a0,d1.w),d0
add.b trk_prevnote2(a5),d0
movea.l trk_periodtbl(a5),a1 ;get period table
add.w d0,d0
move.w 0(a1,d0.w),d5
addq.b #1,d1
tst.b -8(a0,d1.w)
bpl.s synth_noarpres
move.w trk_arpsoffs(a5),d1
synth_noarpres move.w d1,trk_arpgoffs(a5)
; -------- HANDLE SYNTHSOUND VIBRATO -------------------------------------
synth_vibrato move.w trk_perchg(a5),d1
tst.w trk_synvibdep(a5) ;get vibrato depth
beq.s synth_novib ;0 => no vibrato
move.w trk_synviboffs(a5),d0 ;get offset
lsr.w #4,d0 ;/ 16
and.w #$1f,d0 ;sinetable offset (0-31)
movea.l trk_synvibwf(a5),a0
move.b 0(a0,d0.w),d0 ;get a byte
ext.w d0 ;to word
muls trk_synvibdep(a5),d0 ;amplify (* depth)
asr.w #8,d0 ;and divide by 64
add.w d0,d1 ;add vibrato...
move.w trk_synthvibspd(a5),d0 ;vibrato speed
add.w d0,trk_synviboffs(a5) ;add to offset
synth_novib tst.w d5
beq.s synth_rtper
move.l #AUDIO_CONST,d0
divu d5,d0
add.w d1,d0
beq.s synth_rtper
move.l #AUDIO_CONST,d5
divu d0,d5
synth_rtper cmp.w #113,d5 ;overflow??
bhi.s synth_pern2h
moveq #113,d5
synth_pern2h rts
ENDC
sinetable dc.b 0,25,49,71,90,106,117,125,127,125,117,106,90,71,49
dc.b 25,0,-25,-49,-71,-90,-106,-117,-125,-127,-125,-117
dc.b -106,-90,-71,-49,-25,0
EVEN
XDEF _IntHandler
_IntHandler: movem.l d2-d7/a2-a6,-(sp)
lea DB,a6 ;don't expect a1 to contain DB address
movea.l _module-DB(a6),a2
move.l a2,d0
beq.w plr_exit
IFNE MIDI
clr.b lastcmdbyte-DB(a6) ;no MIDI optimization
ENDC
tst.w mmd_pstate(a2)
beq.w plr_exit
IFNE MIDI
clr.w bytesinnotebuff-DB(a6)
ENDC
movea.l mmd_songinfo(a2),a4
moveq #0,d3
move.b mmd_counter(a2),d3
addq.b #1,d3
cmp.b msng_tempo2(a4),d3
bge.s plr_pnewnote ;play new note
move.b d3,mmd_counter(a2)
bne.w nonewnote ;do just fx
; --- new note!!
plr_pnewnote: clr.b mmd_counter(a2)
tst.w blkdelay-DB(a6)
beq.s plr_noblkdelay
subq.w #1,blkdelay-DB(a6)
bne.w nonewnote
; --- now start to play it
; -------- GET ADDRESS OF NOTE DATA --------------------------------------
plr_noblkdelay move.w mmd_pblock(a2),d0
bsr.w GetNoteDataAddr
moveq #0,d7 ;number of track
moveq #0,d4
lea trackdataptrs-DB(a6),a1
; -------- TRACK LOOP (FOR EACH TRACK) -----------------------------------
plr_loop0: movea.l (a1)+,a5 ;get address of this track's struct
; ---------------- get the note numbers
moveq #0,d3
move.b (a3)+,d0 ;get the number of this note
bpl.s plr_nothinote
moveq #0,d0
plr_nothinote move.b d0,trk_currnote(a5)
beq.s plr_nosetprevn
move.b d0,(a5)
plr_nosetprevn move.b (a3),d3 ;instrument number
addq.l #3,a3 ;adv. to next track
clr.b trk_fxtype(a5)
; ---------------- check if there's an instrument number
and.w #$3F,d3
beq.s noinstnum
; ---------------- finally, save the number
subq.b #1,d3
move.b d3,trk_previnstr(a5) ;remember instr. number!
; ---------------- get the pointer of data's of this sample in Song-struct
move.w d3,d0
asl.w #3,d3
lea 0(a4,d3.w),a0 ;a0 contains now address of it
move.l a0,trk_previnstra(a5)
; ---------------- get volume
move.b inst_svol(a0),trk_prevvol(a5) ;vol of this instr
move.b inst_strans(a0),trk_stransp(a5)
; ---------------- remember some values of this instrument
lea holdvals-DB(a6),a0
adda.w d0,a0
IFNE HOLD
move.b (a0),trk_inithold(a5) ;hold
move.b 63(a0),trk_initdecay(a5) ;decay
ENDC
move.b 2*63(a0),trk_finetune(a5) ;finetune
move.b 6*63(a0),trk_outputdev(a5) ;output dev
; ---------------- remember transpose
clr.w trk_soffset(a5) ;sample offset
clr.b trk_miscflags(a5) ;misc.
noinstnum addq.w #1,d7
cmp.w numtracks-DB(a6),d7
blt plr_loop0
bsr.w DoPreFXLoop
; -------- NOTE PLAYING LOOP ---------------------------------------------
moveq #0,d7
lea trackdataptrs-DB(a6),a1
plr_loop2 movea.l (a1)+,a5
tst.b trk_fxtype(a5)
bne.s plr_loop2_end
move.b trk_currnote(a5),d1
beq.s plr_loop2_end
; ---------------- play
move.l a1,-(sp)
ext.w d1
moveq #0,d3
move.b trk_previnstr(a5),d3 ;instr #
movea.l trk_previnstra(a5),a3 ;instr data address
move.b trk_inithold(a5),trk_noteoffcnt(a5) ;initialize hold
bne.s plr_nohold0 ;not 0 -> OK
st trk_noteoffcnt(a5) ;0 -> hold = 0xff (-1)
; ---------------- and finally:
plr_nohold0 bsr _PlayNote ;play it
move.l (sp)+,a1
plr_loop2_end addq.w #1,d7
cmp.w numtracks-DB(a6),d7
blt.s plr_loop2
; -------- THE REST... ---------------------------------------------------
bsr.s AdvSngPtr
nonewnote bsr.w DoFX
plr_endfx:
IFNE MIDI
bsr _StartDMA
ENDC
plr_exit: movem.l (sp)+,d2-d7/a2-a6
rts
; and advance song pointers
AdvSngPtr move.l mmd_pblock(a2),fxplineblk-DB(a6) ;store pline/block for fx
move.w nextblockline-DB(a6),d1
beq.s plr_advlinenum
clr.w nextblockline-DB(a6)
subq.w #1,d1
bra.s plr_linenumset
plr_advlinenum move.w mmd_pline(a2),d1 ;get current line #
addq.w #1,d1 ;advance line number
plr_linenumset cmp.w numlines-DB(a6),d1 ;advance block?
bhi.s plr_chgblock ;yes.
tst.b nextblock-DB(a6) ;command F00/1Dxx?
beq.w plr_nochgblock ;no, don't change block
; -------- CHANGE BLOCK? -------------------------------------------------
plr_chgblock tst.b nxtnoclrln-DB(a6)
bne.s plr_noclrln
moveq #0,d1 ;clear line number
plr_noclrln tst.w mmd_pstate(a2) ;play block or play song
bpl.w plr_nonewseq ;play block only...
; ********* BELOW CODE FOR MMD2 ONLY ************************************
; -------- CHANGE SEQUENCE -----------------------------------------------
plr_skipseq move.w mmd_pseq(a2),d0 ;actually stored as << 2
movea.l msng_pseqs(a4),a1 ;ptr to playseqs
movea.l 0(a1,d0.w),a0 ;a0 = ptr to curr PlaySeq
move.w mmd_pseqnum(a2),d0 ;get play sequence number
tst.b nextblock-DB(a6)
bmi.s plr_noadvseq ;Bxx sets nextblock to -1
addq.w #1,d0 ;advance sequence number
plr_noadvseq cmp.w 40(a0),d0 ;is this the highest seq number??
blt.s plr_notagain ;no.
; -------- CHANGE SECTION ------------------------------------------------
move.w mmd_psecnum(a2),d0 ;get section number
addq.w #1,d0 ;increase..
cmp.w msng_songlen(a4),d0 ;highest section?
blt.s plr_nohisec
moveq #0,d0 ;yes.
plr_nohisec move.w d0,mmd_psecnum(a2) ;push back.
add.w d0,d0
movea.l msng_sections(a4),a0 ;section table
move.w 0(a0,d0.w),d0 ;new playseqlist number
add.w d0,d0
add.w d0,d0
move.w d0,mmd_pseq(a2)
movea.l 0(a1,d0.w),a0 ;a0 = ptr to new PlaySeq
moveq #0,d0 ;playseq OFFSET = 0
; -------- FETCH BLOCK NUMBER FROM SEQUENCE ------------------------------
plr_notagain move.w d0,mmd_pseqnum(a2) ;remember new playseq pos
add.w d0,d0
move.w 42(a0,d0.w),d0 ;get number of the block
bmi.s plr_skipseq ;neg. values for future expansion
plr_changeblk
IFNE CHECK
cmp.w msng_numblocks(a4),d0 ;beyond last block??
blt.s plr_nolstblk ;no..
moveq #0,d0 ;play block 0
ENDC
plr_nolstblk move.w d0,mmd_pblock(a2) ;store block number
plr_nonewseq clr.w nextblock-DB(a6) ;clear this if F00 set it
; ------------------------------------------------------------------------
plr_nochgblock move.w d1,mmd_pline(a2) ;set new line number
IFNE HOLD
lea trackdataptrs-DB(a6),a5
move.w mmd_pblock(a2),d0 ;pblock
bsr.w GetBlockAddr
move.w mmd_pline(a2),d0 ;play line
move.b msng_tempo2(a4),d3 ;interrupts/note
move.w (a0),d7 ;# of tracks
add.w d0,d0
add.w d0,d0 ;d0 = d0 * 4
mulu d7,d0
lea 8(a0,d0.l),a3
subq.b #1,d7
plr_chkhold movea.l (a5)+,a1 ;track data
tst.b trk_noteoffcnt(a1) ;hold??
bmi.s plr_holdend ;no.
move.b (a3),d1 ;get the 1st byte..
bne.s plr_hold1
move.b 1(a3),d0
and.b #$3F,d0
beq.s plr_holdend ;don't hold
bra.s plr_hold2
plr_hold1 and.b #$7f,d1 ;note??
beq.s plr_hold2 ;no, cont hold..
move.b 2(a3),d1
subq.b #3,d1 ;is there command 3 (slide)
bne.s plr_holdend ;no -> end holding
plr_hold2 add.b d3,trk_noteoffcnt(a1) ;continue holding...
plr_holdend addq.l #4,a3 ;next note
dbf d7,plr_chkhold
ENDC
rts
; *******************************************************************
; DoPreFXLoop: Loop and call DoPreFX
; *******************************************************************
DoPreFXLoop:
; -------- PRE-FX COMMAND HANDLING LOOP ----------------------------------
moveq #0,d5 ;command page count
plr_loop1 move.w mmd_pblock(a2),d0
bsr.w GetBlockAddr
move.w d5,d1
move.w mmd_pline(a2),d2
bsr.w GetCmdPointer
movea.l a0,a3
moveq #0,d7 ;clear track count
lea trackdataptrs-DB(a6),a1
plr_loop1_1 movea.l (a1)+,a5
move.b (a3),d0 ;command #
beq.s plr_loop1_end
moveq #0,d4
move.b 1(a3),d4 ;data byte
and.w #$3F,d0
bsr.s DoPreFX
or.b d0,trk_fxtype(a5)
plr_loop1_end adda.w d6,a3 ;next track...
addq.w #1,d7
cmp.w numtracks-DB(a6),d7
blt.s plr_loop1_1
addq.w #1,d5
cmp.w numpages-DB(a6),d5
bls.s plr_loop1
rts
; *******************************************************************
; DoPreFX: Perform effects that must be handled before note playing
; *******************************************************************
; args: a6 = DB d0 = command number (w)
; a5 = track data d5 = note number
; a4 = song d4 = data
; d7 = track #
; returns: d0 = 0: play - d0 = 1: don't play
rtplay MACRO
moveq #0,d0
rts
ENDM
rtnoplay MACRO
moveq #1,d0
rts
ENDM
DoPreFX: add.b d0,d0 ;* 2
move.w f_table(pc,d0.w),d0
jmp fst(pc,d0.w)
fst
f_table dc.w fx-fst,fx-fst,fx-fst,f_03-fst,fx-fst,fx-fst,fx-fst,fx-fst
dc.w f_08-fst,f_09-fst,fx-fst,f_0b-fst,f_0c-fst,fx-fst,f_0e-fst,f_0f-fst
dc.w fx-fst,fx-fst,fx-fst,fx-fst,fx-fst,f_15-fst,f_16-fst,fx-fst
dc.w fx-fst,f_19-fst,fx-fst,fx-fst,f_1c-fst,f_1d-fst,f_1e-fst,f_1f-fst
dc.w f_20-fst,fx-fst,fx-fst,fx-fst,fx-fst,fx-fst,fx-fst,fx-fst
dc.w fx-fst,fx-fst,fx-fst,fx-fst,fx-fst,fx-fst,f_2e-fst,f_2f-fst
dc.w fx-fst,fx-fst,fx-fst,fx-fst,fx-fst,fx-fst,fx-fst,fx-fst
dc.w fx-fst,fx-fst,fx-fst,fx-fst,fx-fst,fx-fst,fx-fst,fx-fst
; ---------------- tempo (F)
f_0f tst.b d4 ;test effect qual..
beq fx0fchgblck ;if effect qualifier (last 2 #'s)..
cmp.b #$f0,d4 ;..is zero, go to next block
bhi.s fx0fspecial ;if it's F1-FF something special
; ---------------- just an ordinary "change tempo"-request
moveq #0,d0 ;will happen!!!
move.b d4,d0
bsr _SetTempo ;change The Tempo
fx rtplay
; ---------------- no, it was FFx, something special will happen!!
fx0fspecial: cmp.b #$f2,d4
beq.s f_1f
cmp.b #$f4,d4
beq.s f_1f
cmp.b #$f5,d4
bne.s isfxfe
; ---------------- FF2 (or 1Fxx)
f_1f
IFNE HOLD
move.b trk_inithold(a5),trk_noteoffcnt(a5) ;initialize hold
bne.s f_1frts ;not 0 -> OK
st trk_noteoffcnt(a5) ;0 -> hold = 0xff (-1)
ENDC
f_1frts rtnoplay
isfxfe: cmp.b #$fe,d4
bne.s notcmdfe
; ---------------- it was FFE, stop playing
clr.w mmd_pstate(a2)
bsr.w SoundOff
adda.w #8,sp ;2 subroutine levels
bra.w plr_exit
f_ffe_no8 rtplay
notcmdfe: cmp.b #$fd,d4 ;change period
bne.s isfxff
; ---------------- FFD, change the period, don't replay the note
IFNE CHECK
cmp.w maxaudiotrk-DB(a6),d7 ;no tracks above 4, thank you!!
bge.s f_0f_rts
ENDC
move.l trk_periodtbl(a5),d1 ;period table
beq.s f_1frts
movea.l d1,a0
move.b trk_currnote(a5),d0
subq.b #1,d0 ;sub 1 to make "real" note number
IFNE CHECK
bmi.s f_1frts
ENDC
add.b msng_playtransp(a4),d0
add.b trk_stransp(a5),d0
add.w d0,d0
bmi.s f_1frts
move.w 0(a0,d0.w),trk_prevper(a5) ;get & push the period
rtnoplay
isfxff cmp.b #$ff,d4 ;note off??
bne.s isfxf7
move.w d7,d0
move.l a1,-(sp)
bsr.w _ChannelOff
move.l (sp)+,a1
rtplay
isfxf7
IFNE MIDI
cmp.b #$f7,d4 ;wait SysX
bne.s f_0f_rts
tst.b sysx-DB(a6)
beq.s f_0f_rts
move.w #2,blkdelay-DB(a6)
ENDC
f_0f_rts rtplay
; ---------------- F00, called Pattern Break in ST
fx0fchgblck: move.b #1,nextblock-DB(a6) ;next block????...YES!!!! (F00)
bra.s f_0f_rts
; ---------------- was not Fxx, then it's something else!!
f_0e
IFNE CHECK
cmp.b maxaudiotrk-DB(a6),d7
bge.s f_0e_rts
ENDC
bset #0,trk_miscflags(a5)
move.b d4,trk_wfcmd+1(a5) ;set waveform command position ptr
f_0e_rts rtplay
; ---------------- change volume
f_0c move.b d4,d0
bpl.s plr_nosetdefvol
and.b #$7F,d0
IFNE CHECK
cmp.b #64,d0
bgt.s go_nocmd
ENDC
moveq #0,d1
move.b trk_previnstr(a5),d1
asl.w #3,d1
move.b d0,inst_svol(a4,d1.w) ;set new svol
bra.s plr_setvol
plr_nosetdefvol btst #4,msng_flags(a4) ;look at flags
bne.s volhex
lsr.b #4,d0 ;get number from left
mulu #10,d0 ;number of tens
move.b d4,d1 ;get again
and.b #$0f,d1 ;this time don't get tens
add.b d1,d0 ;add them
volhex:
IFNE CHECK
cmp.b #64,d0
bhi.s go_nocmd
ENDC
plr_setvol move.b d0,trk_prevvol(a5)
go_nocmd rtplay
; ---------------- tempo2 change??
f_09
IFNE CHECK
and.b #$1F,d4
bne.s fx9chk
moveq #$20,d4
ENDC
fx9chk: move.b d4,msng_tempo2(a4)
f_09_rts rtplay
; ---------------- block delay
f_1e tst.w blkdelay-DB(a6)
bne.s f_1e_rts
addq.w #1,d4
move.w d4,blkdelay-DB(a6)
f_1e_rts rtplay
; ---------------- finetune
f_15
IFNE CHECK
cmp.b #7,d4
bgt.s f_15_rts
cmp.b #-8,d4
blt.s f_15_rts
ENDC
move.b d4,trk_finetune(a5)
f_15_rts rtplay
; ---------------- repeat loop
f_16 tst.b d4
bne.s plr_dorpt
move.w mmd_pline(a2),rptline-DB(a6)
bra.s f_16_rts
plr_dorpt tst.w rptcounter-DB(a6)
beq.s plr_newrpt
subq.w #1,rptcounter-DB(a6)
beq.s f_16_rts
bra.s plr_setrptline
plr_newrpt move.b d4,rptcounter+1-DB(a6)
plr_setrptline move.w rptline-DB(a6),d0
addq.w #1,d0
move.w d0,nextblockline-DB(a6)
f_16_rts rtplay
; ---------------- preset change
f_1c
IFNE MIDI
cmp.b #$80,d4
bhi.s f_1c_rts
moveq #0,d1
move.b trk_previnstr(a5),d1
add.w d1,d1
lea ext_midipsets-DB(a6),a0
ext.w d4
move.w d4,0(a0,d1.w) ;set MIDI preset
ENDC
f_1c_rts rtplay
; ---------------- note off time set??
f_08
IFNE HOLD
IFNE MIDI
move.l trk_previnstra(a5),d0
beq.s 1$
move.l d0,a0
tst.b inst_midich(a0)
bne.s 2$ ;two-digit hold for MIDI instrs
ENDC
1$ move.b d4,d0
lsr.b #4,d0 ;extract left nibble
and.b #$0f,d4 ; " " right " "
move.b d0,trk_initdecay(a5) ;left = decay
2$ move.b d4,trk_inithold(a5) ;right = hold
ENDC
rtplay
; ---------------- sample begin offset
f_19 lsl.w #8,d4
move.w d4,trk_soffset(a5)
f_19_rts rtplay
; ---------------- cmd Bxx, "position jump"
f_0b
IFNE CHECK
chk0b_mmd2 move.w mmd_pseq(a2),d0 ;get seq number
movea.l msng_pseqs(a4),a0 ;ptr to playseqs
movea.l 0(a0,d0.w),a0 ;a0 = ptr to curr PlaySeq
cmp.w 40(a0),d4 ;test song length
bhi.s f_0b_rts
chk0b_end
ENDC
move.w d4,mmd_pseqnum(a2)
st nextblock-DB(a6) ; = 1
f_0b_rts rtplay
; ---------------- cmd 1Dxx, jump to next seq, line # specified
f_1d move.w #$1ff,nextblock-DB(a6)
addq.w #1,d4
move.w d4,nextblockline-DB(a6)
rtplay
; ---------------- try portamento (3)
f_03
IFNE CHECK
cmp.w maxaudiotrk-DB(a6),d7
bge.s f_03_rts
ENDC
moveq #0,d0
move.b trk_currnote(a5),d0
subq.b #1,d0 ;subtract note number
bmi.s plr_setfx3spd ;0 -> set new speed
move.l trk_periodtbl(a5),d1
beq.s f_03_rts
movea.l d1,a0
add.b msng_playtransp(a4),d0 ;play transpose
add.b trk_stransp(a5),d0 ;and instrument transpose
bmi.s f_03_rts ;again.. too low
add.w d0,d0
move.w 0(a0,d0.w),trk_porttrgper(a5) ;period of this note is the target
plr_setfx3spd: tst.b d4 ;qual??
beq.s f_03_rts ;0 -> do nothing
move.b d4,trk_prevportspd(a5) ;store speed
f_03_rts rtnoplay
; ---------------- command 20 (backwards)
f_20 tst.b d4
bne.s 1$
bset #6,trk_miscflags(a5) ;play backwards
1$ rtplay
; ---------------- command 2E (panpot)
XREF Mix_FX2E
f_2e jsr Mix_FX2E(pc)
rtplay
; ---------------- command 2F (fx settings)
XREF Mix_FX2F
f_2f jsr Mix_FX2F(pc)
rtplay
; *******************************************************************
; DoFX: Handle effects, hold/fade etc.
; *******************************************************************
DoFX moveq #0,d3
move.b mmd_counter(a2),d3
IFNE HOLD
lea trackdataptrs-DB(a6),a1
; Loop 1: Hold/Fade handling
moveq #0,d7 ;clear track count
dofx_loop1 movea.l (a1)+,a5
bsr.w HoldAndFade
addq.w #1,d7
cmp.w numtracks-DB(a6),d7
blt.s dofx_loop1
ENDC
; Loop 2: Track command handling
moveq #0,d5 ;command page count
dofx_loop2 move.w fxplineblk-DB(a6),d0
bsr.w GetBlockAddr
movea.l a0,a3
bsr.w StoreBlockDims
dofx_sbd_mmd0 move.w d5,d1
move.w fxplineblk+2-DB(a6),d2
movea.l a3,a0
bsr.s GetCmdPointer
movea.l a0,a3
moveq #0,d7 ;clear track count
lea trackdataptrs-DB(a6),a1
dofx_loop2_1 movea.l (a1)+,a5
moveq #0,d4
move.b (a3),d0 ;command #
move.b 1(a3),d4 ;data byte
and.w #$1F,d0
dofx_mmd0maskd tst.b trk_fxtype(a5)
bgt.s dofx_lend2_1 ;1 = skip
IFNE MIDI
beq.s dofx_chfx
bsr.w MIDIFX
bra.s dofx_lend2_1
ENDC
IFEQ MIDI
bne.s dofx_lend2_1
ENDC
dofx_chfx bsr.w ChannelFX
dofx_lend2_1 adda.w d6,a3 ;next track...
addq.w #1,d7
cmp.w numtracks-DB(a6),d7
blt.s dofx_loop2_1
addq.w #1,d5
cmp.w numpages-DB(a6),d5
bls.s dofx_loop2
; Loop 3: Updating audio hardware
moveq #0,d7 ;clear track count
lea trackdataptrs-DB(a6),a1
dofx_loop3 movea.l (a1)+,a5
IFNE HOLD
tst.b trk_fxtype(a5)
bne.s dofx_lend3 ;only in case 0 (norm)
ENDC
IFEQ HOLD
cmp.w maxaudiotrk-DB(a6),d7
bge.s dofx_stopl3
ENDC
bsr.w UpdatePerVol
dofx_lend3 addq.w #1,d7
cmp.w numtracks-DB(a6),d7
blt.s dofx_loop3
dofx_stopl3 rts
; *******************************************************************
; GetCmdPointer: Return command pointer for track 0
; *******************************************************************
; args: a0 = block pointer
; d1 = page number
; d2 = line number
; a2 = module
; result: a0 = command pointer (i.e. trk 0 note + 2)
; d6 = track advance (bytes)
; scratches: d0, d1, d2, a0
; Note: no num_pages check! If numpages > 0 it can be assumed that
; extra pages exist.
GetCmdPointer
mulu (a0),d2 ;d2 = line # * numtracks
add.l d2,d2 ;d2 *= 2...
subq.w #1,d1
bmi.s gcp_page0
movea.l 4(a0),a0
movea.l 12(a0),a0
add.w d1,d1
add.w d1,d1
movea.l 4(a0,d1.w),a0 ;command data
adda.l d2,a0
moveq #2,d6
rts
gcp_page0 add.l d2,d2 ;d2 *= 4
lea 10(a0,d2.l),a0 ;offs: 4 = header, 2 = note
moveq #4,d6 ;track advance (bytes)
rts
; *******************************************************************
; GetBlockAddr: Return pointer to block
; *******************************************************************
; args: d0 = block number
; result: a0 = block pointer
; scratches: d0, a0
GetBlockAddr movea.l mmd_blockarr(a2),a0
add.w d0,d0
add.w d0,d0
movea.l 0(a0,d0.w),a0
rts
; *******************************************************************
; GetNoteDataAddr: Check & return addr. of current note
; *******************************************************************
;args: d0 = pblock a6 = DB
;returns: a3 = address
;scratches: d0, a0, d1
GetNoteDataAddr bsr.w GetBlockAddr
movea.l a0,a3
bsr.w StoreBlockDims
move.w numlines-DB(a6),d1
move.w mmd_pline(a2),d0
cmp.w d1,d0 ;check if block end exceeded...
bls.s plr_nolinex
move.w d1,d0
plr_nolinex add.w d0,d0
add.w d0,d0 ;d0 = d0 * 4
mulu numtracks-DB(a6),d0
lea 8(a3,d0.l),a3 ;address of current note
rts
; *******************************************************************
; StoreBlockDims: Store block dimensions
; *******************************************************************
; args: a0 = block ptr, a6 = DB
StoreBlockDims move.l (a0)+,numtracks-DB(a6) ;numtracks & lines
tst.l (a0) :BlockInfo
beq.s sbd_1page
movea.l (a0),a0
move.l 12(a0),d0 ;BlockInfo.pagetable
beq.s sbd_1page
movea.l d0,a0
move.w (a0),numpages-DB(a6) ;num_pages
rts
sbd_1page clr.w numpages-DB(a6)
rts
; *******************************************************************
; HoldAndFade: Handle hold/fade
; *******************************************************************
; args: a5 = track data
; a6 = DB
; d7 = track #
; scratches: d0, d1, a0
IFNE HOLD
HoldAndFade
IFNE MIDI
tst.b trk_prevmidin(a5) ;is it MIDI??
bne.w plr_haf_midi
ENDC
IFNE CHECK
cmp.w maxaudiotrk-DB(a6),d7
bge.w plr_haf_midi ;no non-MIDI effects in tracks 4 - 15
ENDC
tst.b trk_noteoffcnt(a5)
bmi.s plr_haf_noholdexp
subq.b #1,trk_noteoffcnt(a5)
bpl.s plr_haf_noholdexp
IFNE SYNTH
tst.b trk_synthtype(a5) ;synth/hybrid??
beq.s plr_nosyndec
move.b trk_decay(a5),trk_volcmd+1(a5) ;set volume command pointer
clr.b trk_volwait(a5) ;abort WAI
bra.s plr_haf_noholdexp
ENDC
plr_nosyndec move.b trk_decay(a5),trk_fadespd(a5) ;set fade...
bne.s plr_haf_noholdexp ;if > 0, don't stop sound
move.w d7,d0
move.l a1,-(sp)
bsr.w _ChannelOff
movea.l (sp)+,a1
plr_haf_noholdexp
move.b trk_fadespd(a5),d0 ;fade??
beq.s plr_haf_dofx ;no.
sub.b d0,trk_prevvol(a5)
bpl.s plr_nofade2low
clr.b trk_prevvol(a5)
clr.b trk_fadespd(a5) ;fade no more
plr_nofade2low
plr_haf_dofx clr.b trk_fxtype(a5)
plr_haf_rts rts
; MIDI version
plr_haf_midi
st trk_fxtype(a5)
IFNE MIDI
tst.b trk_noteoffcnt(a5)
bmi.s plr_haf_rts
subq.b #1,trk_noteoffcnt(a5)
bpl.s plr_haf_rts
move.b trk_prevmidin(a5),d1
beq.s plr_haf_rts
lea noteondata-DB(a6),a0
exg.l a5,a1
bsr.w choff_midi
exg.l a5,a1
ENDC
rts
;hold
ENDC
; *******************************************************************
; ChannelFX: Do an effect on a channel
; *******************************************************************
;args: d3 = counter
; a4 = song struct d4 = command qual (long, byte used)
; a5 = track data ptr
; a6 = DB d0 = command (long, byte used)
; d7 = track (channel) number
;scratches: d0, d1, d4, a0
ChannelFX add.b d0,d0 ;* 2
move.w fx_table(pc,d0.w),d0
jmp fxs(pc,d0.w)
fxs:
fx_table dc.w fx_00-fxs,fx_01-fxs,fx_02-fxs,fx_03-fxs,fx_04-fxs
dc.w fx_05-fxs,fx_06-fxs,fx_07-fxs,fx_xx-fxs,fx_xx-fxs
dc.w fx_0a-fxs,fx_xx-fxs,fx_0c-fxs,fx_0d-fxs,fx_xx-fxs
dc.w fx_0f-fxs
dc.w fx_10-fxs,fx_11-fxs,fx_12-fxs,fx_13-fxs,fx_14-fxs
dc.w fx_xx-fxs,fx_xx-fxs,fx_xx-fxs,fx_18-fxs,fx_xx-fxs
dc.w fx_1a-fxs,fx_1b-fxs,fx_xx-fxs,fx_xx-fxs,fx_xx-fxs
dc.w fx_1f-fxs
dc.w fx_20-fxs,fx_21-fxs,fx_22-fxs,fx_xx-fxs,fx_xx-fxs,fx_xx-fxs,fx_xx-fxs,fx_xx-fxs
dc.w fx_xx-fxs,fx_xx-fxs,fx_xx-fxs,fx_xx-fxs,fx_xx-fxs,fx_xx-fxs,fx_xx-fxs,fx_xx-fxs
dc.w fx_xx-fxs,fx_xx-fxs,fx_xx-fxs,fx_xx-fxs,fx_xx-fxs,fx_xx-fxs,fx_xx-fxs,fx_xx-fxs
dc.w fx_xx-fxs,fx_xx-fxs,fx_xx-fxs,fx_xx-fxs,fx_xx-fxs,fx_xx-fxs,fx_xx-fxs,fx_xx-fxs
; **************************************** Effect 01 & 02 *
fx_02 neg.w d4
fx_01 tst.b d3
bne.s fx_01nocnt0
btst #5,msng_flags(a4) ;FLAG_STSLIDE??
bne.s fx_xx
fx_01nocnt0 move.l #AUDIO_CONST,d1
move.l d1,d0
tst.w trk_prevper(a5)
beq.s 1$
divu trk_prevper(a5),d0
sub.w d4,d0
beq.s 1$
divu d0,d1
move.w d1,trk_prevper(a5)
1$ ;fx_xx is just a RTS
fx_xx rts
; **************************************** Effect 11 ******
fx_11 tst.b d3
beq.s fx_01nocnt0
fx_11rts rts
; **************************************** Effect 12 ******
fx_12 neg.w d4
tst.b d3
beq.s fx_01nocnt0
fx_12rts rts
; **************************************** Effect 21 ******
fx_21 move.w trk_prevper(a5),d0
move.w d0,d1
mulu d4,d0
lsl.l #5,d0
swap d0
add.w d0,d1
bcc.s 1$
moveq #-1,d1 ;max. freq = 65535 Hz
1$ move.w d1,trk_prevper(a5)
rts
; **************************************** Effect 22 ******
fx_22 move.w trk_prevper(a5),d0
move.w d0,d1
mulu d4,d0
lsl.l #5,d0
swap d0
sub.w d0,d1
bcc.s 1$
moveq #1,d1
1$ move.w d1,trk_prevper(a5)
rts
; **************************************** Effect 00 ******
fx_00 tst.b d4 ;both fxqualifiers are 0s: no arpeggio
beq.s fx_00rts
move.l d3,d0
divu #3,d0
swap d0
subq.b #1,d0
bgt.s fx_arp2
blt.s fx_arp0
and.b #$0f,d4
bra.s fx_doarp
fx_arp0 lsr.b #4,d4
bra.s fx_doarp
fx_arp2 moveq #0,d4
fx_doarp: move.b (a5),d0
subq.b #1,d0 ;-1 to make it 0 - 127
add.b msng_playtransp(a4),d0 ;add play transpose
add.b trk_stransp(a5),d0 ;add instrument transpose
add.b d0,d4
move.l trk_periodtbl(a5),d1
beq.s fx_00rts
movea.l d1,a0
add.b d0,d0
move.w 0(a0,d0.w),d0 ;base note period
add.b d4,d4
sub.w 0(a0,d4.w),d0 ;calc difference from base note
move.w d0,trk_arpadjust(a5)
fx_00rts rts
; **************************************** Effect 04 ******
fx_14 move.b #6,trk_vibshift(a5)
bra.s vib_cont
fx_04 move.b #5,trk_vibshift(a5)
vib_cont tst.b d3
bne.s nonvib
move.b d4,d1
beq.s nonvib
and.w #$0f,d1
beq.s plr_chgvibspd
move.w d1,trk_vibrsz(a5)
plr_chgvibspd and.b #$f0,d4
beq.s nonvib
lsr.b #3,d4
and.b #$3e,d4
move.b d4,trk_vibrspd(a5)
nonvib move.b trk_vibroffs(a5),d0
lsr.b #2,d0
and.w #$1f,d0
moveq #0,d1
lea sinetable(pc),a0
move.b 0(a0,d0.w),d0
ext.w d0
muls trk_vibrsz(a5),d0
move.b trk_vibshift(a5),d1
asr.w d1,d0
move.b trk_vibrspd(a5),d1
add.b d1,trk_vibroffs(a5)
move.l #AUDIO_CONST,d1
move.l d1,d4
tst.w trk_prevper(a5)
beq.s 1$
divu trk_prevper(a5),d4
add.w d0,d4
beq.s 1$
divu d4,d1
sub.w trk_prevper(a5),d1
move.w d1,trk_vibradjust(a5)
1$
fx_04rts rts
; **************************************** Effect 06 ******
fx_06: tst.b d3
bne.s fx_06nocnt0
btst #5,msng_flags(a4)
bne.s fx_04rts
fx_06nocnt0 bsr.s plr_volslide ;Volume slide
bra.s nonvib ;+ Vibrato
; **************************************** Effect 07 ******
fx_07 tst.b d3
bne.s nontre
move.b d4,d1
beq.s nontre
and.w #$0f,d1
beq.s plr_chgtrespd
move.w d1,trk_tremsz(a5)
plr_chgtrespd and.b #$f0,d4
beq.s nontre
lsr.b #2,d4
and.b #$3e,d4
move.b d4,trk_tremspd(a5)
nontre move.b trk_tremoffs(a5),d0
lsr.b #3,d0
and.w #$1f,d0
lea sinetable(pc),a0
move.b 0(a0,d0.w),d1
ext.w d1
muls trk_tremsz(a5),d1
asr.w #7,d1
move.b trk_tremspd(a5),d0
add.b d0,trk_tremoffs(a5)
add.b trk_prevvol(a5),d1
bpl.s tre_pos
moveq #0,d1
tre_pos cmp.b #64,d1
ble.s tre_no2hi
moveq #64,d1
tre_no2hi move.b d1,trk_tempvol(a5)
rts
; ********* VOLUME SLIDE FUNCTION *************************
plr_volslide move.b d4,d0
moveq #0,d1
move.b trk_prevvol(a5),d1 ;move previous vol to d1
and.b #$f0,d0
bne.s crescendo
sub.b d4,d1 ;sub from prev. vol
voltest0 bpl.s novolover64
moveq #0,d1 ;volumes under zero not accepted
bra.s novolover64
crescendo: lsr.b #4,d0
add.b d0,d1
voltest cmp.b #64,d1
ble.s novolover64
moveq #64,d1
novolover64 move.b d1,trk_prevvol(a5)
volsl_rts rts
; **************************************** Effect 0D/0A ***
fx_0a:
fx_0d: tst.b d3
bne.s plr_volslide
btst #5,msng_flags(a4)
beq.s plr_volslide
rts
; **************************************** Effect 05 ******
fx_05: tst.b d3
bne.s fx_05nocnt0
btst #5,msng_flags(a4)
bne.s fx_05rts
fx_05nocnt0 bsr.s plr_volslide
bra.s fx_03nocnt0
fx_05rts rts
; **************************************** Effect 1A ******
fx_1a tst.b d3
bne.s volsl_rts
move.b trk_prevvol(a5),d1
add.b d4,d1
bra.s voltest
; **************************************** Effect 1B ******
fx_1b tst.b d3
bne.s volsl_rts
move.b trk_prevvol(a5),d1
sub.b d4,d1
bra.s voltest0
; **************************************** Effect 03 ******
fx_03: tst.b d3
bne.s fx_03nocnt0
btst #5,msng_flags(a4)
bne.s fx_03rts
fx_03nocnt0 move.w trk_porttrgper(a5),d0 ;d0 = target period
beq.s fx_03rts
move.w trk_prevper(a5),d1 ;d1 = curr. period
move.b trk_prevportspd(a5),d4 ;get prev. speed
cmp.w d0,d1
bhi.s subper ;curr. period > target period
move.l #AUDIO_CONST,d1
move.l d1,d0
tst.w trk_prevper(a5)
beq.s fx_03rts
divu trk_prevper(a5),d0
sub.w d4,d0
bls.s targreached ;carry or zero set
divu d0,d1
cmp.w trk_porttrgper(a5),d1
bcs.s targnreach
bra.s targreached
subper: move.l #AUDIO_CONST,d1
move.l d1,d0
tst.w trk_prevper(a5)
beq.s fx_03rts
divu trk_prevper(a5),d0
add.w d4,d0
beq.s targreached
divu d0,d1
cmp.w trk_porttrgper(a5),d1
bhi.s targnreach
targreached: move.w trk_porttrgper(a5),d1 ;eventually push target period
clr.w trk_porttrgper(a5) ;now we can forget everything
targnreach: move.w d1,trk_prevper(a5)
fx_03rts rts
; **************************************** Effect 13 ******
fx_13: cmp.b #3,d3
bge.s fx_13rts ;if counter < 3
neg.w d4
move.w d4,trk_vibradjust(a5) ;subtract effect qual...
fx_13rts rts
; *********************************************************
fx_0c: tst.b d3
bne.s fx_13rts
dvc_0 move.b trk_prevvol(a5),d1
rts
; **************************************** Effect 10 ******
fx_10:
IFNE MIDI
tst.b d3
bne.s fx_13rts
move.w d4,d0
bra.w _InitMIDIDump
ENDC
IFEQ MIDI
rts
ENDC
; **************************************** Effect 18 ******
fx_18 cmp.b d4,d3
bne.s fx_18rts
clr.b trk_prevvol(a5)
fx_18rts rts
; **************************************** Effect 1F ******
fx_1f move.b d4,d1
lsr.b #4,d4 ;note delay
beq.s nonotedelay
cmp.b d4,d3 ;compare to counter
blt.s fx_18rts ;tick not reached
bne.s nonotedelay
bra playfxnote ;trigger note
nonotedelay and.w #$0f,d1 ;retrig?
beq.s fx_18rts
moveq #0,d0
move.b d3,d0
divu d1,d0
swap d0 ;get modulo of counter/tick
tst.w d0
bne.s fx_18rts
bra playfxnote ;retrigger
; **************************************** Effect 20 ******
XREF Mix_FX20
fx_20 tst.b d3
bne.s fx_20rts
move.b d4,d0
ext.w d0
jmp Mix_FX20(pc)
fx_20rts rts
; **************************************** Effect 0F ******
; see below...
; *********************************************************
; *******************************************************************
; UpdatePerVol: Update audio registers (period & volume) after FX
; *******************************************************************
; args: a6 = DB d7 = channel #
; a5 = track data
; scratches: d0, d1, a0, d5
UpdatePerVol cmp.w maxaudiotrk-DB(a6),d7
bge.s plr_upv_rts
move.w trk_prevper(a5),d5
IFNE SYNTH
move.l trk_synthptr(a5),d0
beq.s plr_upv_nosynth
move.l a1,-(sp)
bsr.w synth_start
move.l (sp)+,a1
ENDC
plr_upv_nosynth add.w trk_vibradjust(a5),d5
sub.w trk_arpadjust(a5),d5
clr.l trk_vibradjust(a5) ;clr both adjusts
moveq #0,d0
move.b trk_tempvol(a5),d0
bpl.s plr_upv_setvol
move.b trk_prevvol(a5),d0
plr_upv_setvol st trk_tempvol(a5)
; -------- GetRelVol: Calculate track volume -----------------------------
; track # = d7, note vol = d0, song = a4
IFNE RELVOL
mulu trk_trackvol(a5),d0 ;d0 = master v. * track v. * volume
lsr.w #8,d0
ENDC
XREF _MixSetTrkPeriod,_MixSetTrkVol
move.l a1,-(sp)
jsr _MixSetTrkVol(pc)
movea.l (sp)+,a1
move.w d5,d1
jmp _MixSetTrkPeriod(pc)
plr_upv_rts rts
; **** a separate routine for handling command 0F
fx_0f cmp.b #$f1,d4
bne.s no0ff1
cmp.b #3,d3
beq.s playfxnote
rts
no0ff1: cmp.b #$f2,d4
bne.s no0ff2
cmp.b #3,d3
beq.s playfxnote
rts
no0ff2: cmp.b #$f3,d4
bne.s no0ff3
move.b d3,d0
beq.s cF_rts
and.b #1,d0 ;is 2 or 4
bne.s cF_rts
playfxnote: moveq #0,d1
move.b trk_currnote(a5),d1 ;get note # of curr. note
beq.s cF_rts
move.b trk_noteoffcnt(a5),d0 ;get hold counter
bmi.s pfxn_nohold ;no hold, or hold over
add.b d3,d0 ;increase by counter val
bra.s pfxn_hold
pfxn_nohold move.b trk_inithold(a5),d0 ;get initial hold
bne.s pfxn_hold
st d0
pfxn_hold move.b d0,trk_noteoffcnt(a5)
movem.l a1/a3/d2-d3/d5-d6,-(sp)
moveq #0,d3
move.b trk_previnstr(a5),d3 ;and prev. sample #
movea.l trk_previnstra(a5),a3
bsr _PlayNote
movem.l (sp)+,a1/a3/d2-d3/d5-d6
cF_rts rts
no0ff3: cmp.b #$f4,d4 ;triplet cmd 1
bne.s no0ff4
moveq #0,d0
move.b msng_tempo2(a4),d0
divu #3,d0
cmp.b d0,d3
beq.s playfxnote
rts
no0ff4 cmp.b #$f5,d4 ;triplet cmd 2
bne.s no0ff5
moveq #0,d0
move.b msng_tempo2(a4),d0
divu #3,d0
add.w d0,d0
cmp.b d0,d3
beq.s playfxnote
rts
no0ff5 cmp.b #$f7,d4
bne.s no0ff7
IFNE MIDI
tst.b d3
bne.s 1$
tst.b sysx-DB(a6)
beq.s 1$
addq.w #1,blkdelay-DB(a6)
ENDC
1$ rts
no0ff7 cmp.b #$f8,d4 ;f8 = filter off
beq.s plr_filteroff
cmp.b #$f9,d4 ;f9 = filter on
bne.s cF_rts
bclr #1,$bfe001
bset #0,msng_flags(a4)
rts
plr_filteroff: bset #1,$bfe001
bclr #0,msng_flags(a4)
rts
; -------- AUDIO DMA ROUTINE ---------------------------------------------
_StartDMA: ;Only used for triggering MIDI notes
IFNE MIDI
lea bytesinnotebuff-DB(a6),a0
move.w (a0)+,d0
bne.w _AddMIDId
rts
ENDC
_SetTempo:
XREF _SetMixTempo
movea.l a4,a0
jmp _SetMixTempo(pc)
IFNE MIDI
MIDIFX add.b d0,d0 ;* 2
move.w midicmd_table(pc,d0.w),d0
jmp midifx(pc,d0.w)
midifx
midicmd_table dc.w mfx_00-midifx,mfx_01-midifx,mfx_02-midifx,mfx_03-midifx,mfx_04-midifx
dc.w mfx_05-midifx,mfx_rts-midifx,mfx_rts-midifx,mfx_rts-midifx,mfx_rts-midifx
dc.w mfx_0a-midifx,mfx_rts-midifx,mfx_rts-midifx,mfx_0d-midifx,mfx_0e-midifx
dc.w mfx_0f-midifx
dc.w mfx_10-midifx,mfx_rts-midifx,mfx_rts-midifx,mfx_13-midifx
dc.w mfx_rts-midifx,mfx_rts-midifx,mfx_rts-midifx,mfx_17-midifx
dc.w mfx_rts-midifx,mfx_rts-midifx,mfx_rts-midifx,mfx_rts-midifx
dc.w mfx_rts-midifx,mfx_rts-midifx,mfx_rts-midifx,fx_1f-midifx
dc.w mfx_rts-midifx,mfx_rts-midifx,mfx_rts-midifx,mfx_rts-midifx,mfx_rts-midifx,mfx_rts-midifx,mfx_rts-midifx,mfx_rts-midifx
dc.w mfx_rts-midifx,mfx_rts-midifx,mfx_rts-midifx,mfx_rts-midifx,mfx_rts-midifx,mfx_rts-midifx,mfx_rts-midifx,mfx_rts-midifx
dc.w mfx_rts-midifx,mfx_31-midifx,mfx_32-midifx,mfx_33-midifx,mfx_34-midifx,mfx_35-midifx,mfx_36-midifx,mfx_37-midifx
dc.w mfx_38-midifx,mfx_39-midifx,mfx_3A-midifx,mfx_3B-midifx,mfx_3C-midifx,mfx_3D-midifx,mfx_3E-midifx,mfx_3F-midifx
mfx_01 lea prevmidipbend-DB(a6),a0
moveq #0,d1
move.b trk_prevmidich(a5),d1 ;get previous midi channel
add.b d1,d1 ;UWORD index
tst.b d4 ;x100??
beq.s resetpbend
move.w 0(a0,d1.w),d0 ;get previous pitch bend
lsl.w #3,d4 ;multiply bend value by 8
add.w d4,d0
cmp.w #$3fff,d0
bls.s bendpitch
move.w #$3fff,d0
bendpitch: move.w d0,0(a0,d1.w) ;save current pitch bend
lsr.b #1,d1 ;back to UBYTE
or.b #$e0,d1
lea noteondata-DB(a6),a0
move.b d1,(a0) ;midi command & channel
move.b d0,1(a0) ;lower value
and.b #$7f,1(a0) ;clear bit 7
lsr.w #7,d0
and.b #$7f,d0 ;clr bit 7
move.b d0,2(a0) ;higher 7 bits
moveq #3,d0
bra.w _AddMIDId
mfx_02 lea prevmidipbend-DB(a6),a0
moveq #0,d1
move.b trk_prevmidich(a5),d1
add.b d1,d1
tst.b d4
beq.s resetpbend ;x200??
move.w 0(a0,d1.w),d0
lsl.w #3,d4
sub.w d4,d0
bpl.s bendpitch ;not under 0
moveq #0,d0
bra.s bendpitch
resetpbend: tst.b d3 ;d3 = counter (remember??)
bne.s mfx_rts
move.w #$2000,d0
bra.s bendpitch
mfx_rts rts
mfx_13
mfx_03 tst.b d3
bne.s mfx_rts
lea prevmidipbend-DB(a6),a0
moveq #0,d1
move.b trk_prevmidich(a5),d1
add.b d1,d1
move.b d4,d0
add.b #128,d0
lsl.w #6,d0
bra.s bendpitch
mfx_0d tst.b d3
bne.s mfx_rts
lea noteondata+1-DB(a6),a0 ;CHANNEL AFTERTOUCH
move.b d4,(a0) ;value
bmi.s mfx_rts
move.b trk_prevmidich(a5),-(a0)
or.b #$d0,(a0)
moveq #2,d0
bra.w _AddMIDId
mfx_0a tst.b d3
bne.s mfx_rts
lea noteondata+2-DB(a6),a0 ;POLYPHONIC AFTERTOUCH
and.b #$7f,d4
move.b d4,(a0)
move.b trk_prevmidin(a5),-(a0)
ble.s mfx_rts
move.b trk_prevmidich(a5),-(a0)
or.b #$A0,(a0)
moveq #3,d0
bra.w _AddMIDId
mfx_17 moveq #$07,d0 ;07 = VOLUME
bra.s pushctrldata
mfx_04 moveq #$01,d0 ;01 = MODULATION WHEEL
bra.s pushctrldata
mfx_0e moveq #$0a,d0
pushctrldata tst.b d3 ;do it only once in a note
bne.s mfx_rts2 ;(when counter = 0)
pushctrld_nochk lea noteondata+2-DB(a6),a0 ;push "control change" data,
move.b d4,(a0) ;second databyte
bmi.s mfx_rts2 ;$0 - $7F only
move.b d0,-(a0) ;1st databyte
move.b trk_prevmidich(a5),-(a0) ;MIDI channel
or.b #$b0,(a0) ;command (B)
moveq #3,d0
bra.w _AddMIDId
mfx_05 and.b #$7f,d4 ;set contr. value of curr. MIDI ch.
move.b trk_prevmidich(a5),d6
lea midicontrnum-DB(a6),a0
adda.w d6,a0
move.b d4,(a0)
mfx_rts2 rts
mfx_0f cmp.b #$fa,d4 ;hold pedal ON
bne.s nomffa
moveq #$40,d0
moveq #$7f,d4
bra.s pushctrldata
nomffa cmp.b #$fb,d4 ;hold pedal OFF
bne.w fx_0f
moveq #$40,d0
moveq #$00,d4
bra.s pushctrldata
mfx_00 tst.b d4
beq.s mfx_rts2
and.b #$7f,d4
move.b trk_prevmidich(a5),d6
lea midicontrnum-DB(a6),a0
move.b 0(a0,d6.w),d0
bra.s pushctrldata
mfx_10 tst.b d3
bne.s mfx_rts2
move.w d4,d0
bra.w _InitMIDIDump
; *** Command 3cxx handling
mfx_31 moveq #0,d0
bra.s mfx_3x
mfx_32 moveq #sizeof_mcs,d0
bra.s mfx_3x
mfx_33 moveq #sizeof_mcs*2,d0
bra.s mfx_3x
mfx_34 moveq #sizeof_mcs*3,d0
bra.s mfx_3x
mfx_35 moveq #sizeof_mcs*4,d0
bra.s mfx_3x
mfx_36 moveq #sizeof_mcs*5,d0
bra.s mfx_3x
mfx_37 moveq #sizeof_mcs*6,d0
bra.s mfx_3x
mfx_38 moveq #sizeof_mcs*7,d0
bra.s mfx_3x
mfx_39 moveq #sizeof_mcs*8,d0
bra.s mfx_3x
mfx_3A moveq #sizeof_mcs*9,d0
bra.s mfx_3x
mfx_3B moveq #sizeof_mcs*10,d0
bra.s mfx_3x
mfx_3C moveq #sizeof_mcs*11,d0
bra.s mfx_3x
mfx_3D moveq #sizeof_mcs*12,d0
bra.s mfx_3x
mfx_3E moveq #sizeof_mcs*13,d0
bra.s mfx_3x
mfx_3F moveq #sizeof_mcs*14,d0
mfx_3x tst.b d3 ;counter?
bne.w mcs_notype5
lea cmd3xsettings-DB(a6),a0
adda.w d0,a0
move.w mcs_controller(a0),d1
move.b mcs_type(a0),d0
bne.s mcs_notype0
; *** MCS type: STD (MSB)
cmp.w #$7F,d1
bhi.s 1$
move.b d1,d0
bra pushctrld_nochk
1$ rts
mcs_notype0 subq.b #1,d0
bne.s mcs_notype1
; *** MCS type: STD (LSB)
cmp.w #$7F,d1
bhi.s 1$
cmp.w #$1F,d1
bhi.s 2$
add.w #$20,d1 ;if contr. num was 0 - 1F, add $20 to get contr. LSB
2$ move.b d1,d0
bra pushctrld_nochk
1$ rts
mcs_notype1 subq.b #1,d0
bne.s mcs_notype2
; *** MCS type: RPN (MSB)
move.l d2,-(sp)
move.w d1,d2
addq.w #1,d2 ;ctrlr num + 1
lea noteondata-DB(a6),a0
moveq #0,d0
move.b trk_prevmidich(a5),d0
lea prevmidiptype-DB(a6),a1
bclr #0,0(a1,d0.w) ;test last parameter: RPN or NRPN?, set RPN
lea prevmidipn-DB(a6),a1 ;load parameter address in A1
adda.w d0,a1
adda.w d0,a1
bne.s 1$ ;NRPN... send full ident
cmp.w (a1),d2 ;the same parameter number?
bne.s 1$ ;no.. send param. number
or.b #$B0,d0
move.b d0,(a0)+
moveq #3,d0
bra.s 2$
1$ move.w d2,(a1)
or.b #$B0,d0
move.b d0,(a0)+
move.b #$64,(a0)+ ;RPN LSB
move.b d1,(a0)
and.b #$7F,(a0)+ ;lower 7 bits of ctrlr number
lsr.w #7,d1
move.b #$65,(a0)+ ;RPN MSB
move.b d1,(a0)+
moveq #7,d0
2$ move.b #$06,(a0)+ ;data entry, MSB
move.b d4,(a0)
lea noteondata-DB(a6),a0
move.l (sp)+,d2
bra.w _AddMIDId
mcs_notype2 subq.b #1,d0
bne.s mcs_notype3
; *** MCS type: RPN (LSB)
move.l d2,-(sp)
move.w d1,d2
addq.w #1,d2 ;ctrlr num + 1
lea noteondata-DB(a6),a0
moveq #0,d0
move.b trk_prevmidich(a5),d0
lea prevmidiptype-DB(a6),a1
bclr #0,0(a1,d0.w) ;test last parameter: RPN or NRPN?, set RPN
lea prevmidipn-DB(a6),a1 ;load parameter address in A1
adda.w d0,a1
adda.w d0,a1
bne.s 1$ ;NRPN... send full ident
cmp.w (a1),d2 ;the same parameter number?
bne.s 1$ ;no.. send param. number
or.b #$B0,d0
move.b d0,(a0)+
moveq #3,d0
bra.s 2$
1$ move.w d2,(a1)
or.b #$B0,d0
move.b d0,(a0)+
move.b #$64,(a0)+ ;RPN LSB
move.b d1,(a0)
and.b #$7F,(a0)+ ;lower 7 bits of ctrlr number
lsr.w #7,d1
move.b #$65,(a0)+ ;RPN MSB
move.b d1,(a0)+
moveq #7,d0
2$ move.b #$26,(a0)+ ;data entry, LSB
move.b d4,(a0)
lea noteondata-DB(a6),a0
move.l (sp)+,d2
bra.w _AddMIDId
mcs_notype3 subq.b #1,d0
bne.s mcs_notype4
; *** MCS type: NRPN (MSB)
move.l d2,-(sp)
move.w d1,d2
addq.w #1,d2 ;ctrlr num + 1
lea noteondata-DB(a6),a0
moveq #0,d0
move.b trk_prevmidich(a5),d0
lea prevmidiptype-DB(a6),a1
bset #0,0(a1,d0.w) ;test last parameter: RPN or NRPN?, set NRPN
lea prevmidipn-DB(a6),a1 ;load parameter address in A1
adda.w d0,a1
adda.w d0,a1
beq.s 1$ ;RPN... send full ident
cmp.w (a1),d2 ;the same parameter number?
bne.s 1$ ;no.. send param. number
or.b #$B0,d0
move.b d0,(a0)+
moveq #3,d0
bra.s 2$
1$ move.w d2,(a1)
or.b #$B0,d0
move.b d0,(a0)+
move.b #$62,(a0)+ ;NRPN LSB
move.b d1,(a0)
and.b #$7F,(a0)+ ;lower 7 bits of ctrlr number
lsr.w #7,d1
move.b #$63,(a0)+ ;NRPN MSB
move.b d1,(a0)+
moveq #7,d0
2$ move.b #$06,(a0)+ ;data entry, MSB
move.b d4,(a0)
lea noteondata-DB(a6),a0
move.l (sp)+,d2
bra.w _AddMIDId
mcs_notype4 subq.b #1,d0
bne.s mcs_notype5
; *** MCS type: NRPN (MSB)
move.l d2,-(sp)
move.w d1,d2
addq.w #1,d2 ;ctrlr num + 1
lea noteondata-DB(a6),a0
moveq #0,d0
move.b trk_prevmidich(a5),d0
lea prevmidiptype-DB(a6),a1
bset #0,0(a1,d0.w) ;test last parameter: RPN or NRPN?, set NRPN
lea prevmidipn-DB(a6),a1 ;load parameter address in A1
adda.w d0,a1
adda.w d0,a1
beq.s 1$ ;RPN... send full ident
cmp.w (a1),d2 ;the same parameter number?
bne.s 1$ ;no.. send param. number
or.b #$B0,d0
move.b d0,(a0)+
moveq #3,d0
bra.s 2$
1$ move.w d2,(a1)
or.b #$B0,d0
move.b d0,(a0)+
move.b #$62,(a0)+ ;NRPN LSB
move.b d1,(a0)
and.b #$7F,(a0)+ ;lower 7 bits of ctrlr number
lsr.w #7,d1
move.b #$63,(a0)+ ;NRPN MSB
move.b d1,(a0)+
moveq #7,d0
2$ move.b #$26,(a0)+ ;data entry, MSB
move.b d4,(a0)
lea noteondata-DB(a6),a0
move.l (sp)+,d2
bra.w _AddMIDId
mcs_notype5 rts
_ResetMIDI: movem.l d2/a2/a6,-(sp)
movea.l 4.w,a6 ;ExecBase
jsr -$78(a6) ;Disable()
lea DB,a6
; Clear preset memory
lea prevmidicpres-DB(a6),a0
moveq #7,d2
RM_loop0 clr.l (a0)+ ;force presets to be set again
dbf d2,RM_loop0
clr.b lastcmdbyte
; Reset pitchbenders & modulation wheels
lea midiresd-DB(a6),a2
move.b #$e0,(a2)
move.b #$b0,3(a2)
moveq #15,d2
respbendl: movea.l a2,a0
moveq #6,d0
bsr.w _AddMIDId
addq.b #1,(a2)
addq.b #1,3(a2)
dbf d2,respbendl
lea prevmidipbend-DB(a6),a2
moveq #15,d2
1$ move.w #$2000,(a2)+
dbf d2,1$
; Clear parameters (set to undefined)
lea prevmidipn-DB(a6),a2
lea prevmidiptype-DB(a6),a0
moveq #15,d2
2$ clr.w (a2)+
clr.b (a0)+
dbf d2,2$
; Clear dump variables
clr.b sysx-DB(a6)
lea dumpqueue-DB(a6),a0
move.l a0,dqreadptr-DB(a6)
move.l a0,dqwriteptr-DB(a6)
clr.w dqentries-DB(a6)
; Enable & exit
movea.l 4.w,a6
jsr -$7e(a6) ;Enable()
movem.l (sp)+,d2/a2/a6
rts
ENDC
; *************************************************************************
; *************************************************************************
; *********** P U B L I C F U N C T I O N S ***********
; *************************************************************************
; *************************************************************************
XDEF _InitModuleM,_PlayModuleM
XDEF _InitPlayerM,_RemPlayerM,_StopPlayerM
XDEF _ContModuleM
; *************************************************************************
; InitModule(a0 = module) -- extract expansion data etc.. from a module
; *************************************************************************
_InitModuleM: movem.l a2-a3/d2,-(sp)
move.l a0,-(sp)
beq IM_exit ;0 => xit
IFNE RELVOL
movea.l mmd_songinfo(a0),a1 ;MMD0song
move.b msng_mastervol(a1),d0 ;d0 = mastervol
ext.w d0
lea trackdataptrs,a2
cmp.b #'2',3(a0) ;MMD2?
bcs.s IM_mmd01
move.w msng_numtracks(a1),d1
subq.w #1,d1
movea.l msng_trkvoltbl(a1),a1
bra.s IM_loop0
IM_mmd01 lea msng_trkvol(a1),a1 ;a1 = trkvol
moveq #MAX_MMD1_TRACKS-1,d1
IM_loop0 move.b (a1)+,d2 ;get vol...
ext.w d2
move.l (a2)+,a3 ;pointer to track data
mulu d0,d2 ;mastervol * trackvol
lsr.w #4,d2
move.w d2,trk_trackvol(a3)
dbf d1,IM_loop0
ENDC
IFNE SYNTH
lea trackdataptrs,a2
moveq #63,d1
IM_loop1 move.l (a2)+,a3
clr.l trk_synthptr(a3)
clr.b trk_synthtype(a3)
dbf d1,IM_loop1
ENDC
lea holdvals,a2
movea.l a0,a3
move.l mmd_expdata(a0),d0 ;expdata...
beq IM_clrhlddec ;none here
move.l d0,a1
move.l 4(a1),d0 ;exp_smp
beq IM_clrhlddec ;again.. nothing
move.l d0,a0 ;InstrExt...
move.w 8(a1),d2 ;# of entries
beq IM_clrhlddec
; perhaps >63 instruments are supported in the future... just in case...
cmp.w #63,d2
ble.s 1$
moveq #63,d2
1$ move.l a4,-(sp)
lea rptrptlen,a4
subq.w #1,d2 ;-1 (for dbf)
move.w 10(a1),d0 ;entry size
movea.l mmd_songinfo(a3),a3 ;MMD0song
IFNE MIDI
lea 4*63(a2),a1 ;pointer to ext_midipsets...
ENDC
IM_loop2 clr.b 2*63(a2) ;clear finetune
cmp.w #3,d0
ble.s IM_noftune
move.b 3(a0),126(a2) ;InstrExt.finetune -> finetune
IM_noftune clr.b 3*63(a2) ;clear flags
cmp.w #6,d0
blt.s IM_noflags
move.b 5(a0),3*63(a2) ;InstrExt.flags -> flags
bra.s IM_gotflags
IM_noflags cmp.w #1,inst_replen(a3)
bls.s IM_gotflags
bset #0,3*63(a2)
IM_gotflags clr.b 6*63(a2) ;Initally OUTPUT_STD
cmp.w #9,d0
blt.s IM_noopdev
move.b 8(a0),6*63(a2) ;get InstrExt.output_device
IM_noopdev cmp.w #18,d0
blt.s IM_nolongrpt
move.l 10(a0),(a4)+ ;rpt
move.l 14(a0),(a4)+ ;rptlen
bra.s IM_gotlongrpt
IM_nolongrpt moveq #0,d1
move.w inst_repeat(a3),d1
add.l d1,d1
move.l d1,(a4)+
moveq #0,d1
move.w inst_replen(a3),d1
add.l d1,d1
move.l d1,(a4)+
IM_gotlongrpt
IFNE MIDI
cmp.w #2,d0
ble.s IM_nsmnoff
tst.b 2(a0) ;suppress MIDI note off?
beq.s IM_nsmnoff
bset #7,inst_midich(a3)
IM_nsmnoff move.b inst_midipreset(a3),d1
ext.w d1
move.w d1,(a1)
cmp.w #8,d0
ble.s IM_nolongpset
move.w 6(a0),(a1) ;-> ext_midipsets
btst #1,5(a0)
beq.s IM_nolongpset
bset #6,inst_midich(a3)
IM_nolongpset addq.l #2,a1
ENDC
move.b 1(a0),63(a2) ;InstrExt.decay -> decay
move.b (a0),(a2)+ ;InstrExt.hold -> holdvals
adda.w d0,a0 ;ptr to next InstrExt
addq.l #8,a3 ;next instrument...
dbf d2,IM_loop2
move.l (sp)+,a4
bra.s IM_exit
IM_clrhlddec move.w #5*63+2*63+4*126-1,d0 ;no InstrExt => clear holdvals/decays
1$ clr.b (a2)+ ;..and finetunes/flags/ext_psets etc..
dbf d0,1$
movea.l (sp),a0
; -------- For (very old) MMDs, with no InstrExt, set flags/SSFLG_LOOP,
; -------- also copy inst_midipreset to ext_midipsets.
movea.l mmd_songinfo(a0),a3
lea flags,a2
lea rptrptlen,a0
IFNE MIDI
lea ext_midipsets,a1
ENDC
moveq #62,d0
IM_loop4 cmp.w #1,inst_replen(a3)
bls.s IM_noreptflg
bset #0,(a2)
IM_noreptflg addq.l #1,a2
IFNE MIDI
move.b inst_midipreset(a3),d1
ext.w d1
move.w d1,(a1)+
ENDC
moveq #0,d1
move.w inst_repeat(a3),d1
add.l d1,d1
move.l d1,(a0)+
move.w inst_replen(a3),d1
add.l d1,d1
move.l d1,(a0)+
addq.l #8,a3 ;next inst
dbf d0,IM_loop4
IM_exit
; -------- Get MIDI command 3x settings (if they exist)
IFNE MIDI
movea.l (sp),a0
lea cmd3xsettings,a2
move.l mmd_expdata(a0),d0
beq.s IM_c3_clr
move.l d0,a0
move.l 64(a0),d0 ;mmdcmd3x
beq.s IM_c3_clr
move.w 2(a0),d0 ;num_of_settings
cmp.w #15,d0
bhi.s 1$
moveq #15,d0
1$ move.l 4(a0),d1 ;ctrlr types
beq.s IM_c3_clr
movea.l d1,a1
move.l 8(a0),d1 ;ctrlr numbers
beq.s IM_c3_clr
movea.l d1,a3
subq.w #1,d0
bmi.s IM_c3_clr
2$ move.b (a1)+,d1
ext.w d1
move.w d1,(a2)+
move.w (a3)+,(a2)+
dbra d0,2$
bra.s IM_c3_exit
IM_c3_clr moveq #15-1,d0
1$ clr.l (a2)+
dbra d0,1$
IM_c3_exit
ENDC
; -------- Exit
addq.l #4,sp
movem.l (sp)+,a2-a3/d2
rts
; *************************************************************************
; InitPlayerM() -- allocate interrupt, audio, serial port etc...
; *************************************************************************
_InitPlayerM:
IFNE MIDI
bsr.w _GetSerial
tst.l d0
bne.s IP_error
ENDC
bsr.w _AudioInit
tst.l d0
bne.s IP_error
rts
IP_error bsr.s _RemPlayerM
moveq #-1,d0
rts
; *************************************************************************
; RemPlayerM() -- free interrupt, audio, serial port etc..
; *************************************************************************
_RemPlayerM: movem.l a5/a6,-(sp)
lea DB,a5
tst.b audiodevopen-DB(a5)
beq.s RP_notimer ;timer is not ours
bsr.s _StopPlayerM
bsr.w FreeMixBuffers
clr.w _mix_channels-DB(a5)
movea.l 4.w,a6 ;ExecBase
jsr -$78(a6) ;Disable()
movea.l _chinfo-DB(a5),a1
clr.l _chinfo-DB(a5)
jsr -$2B2(a6) ;FreeVec
movea.l _voltable-DB(a5),a1
clr.l _voltable-DB(a5)
jsr -$2B2(a6) ;FreeVec
jsr -$7E(a6) ;Enable()
movea.l _frqtblmem-DB(a5),a1
clr.l _frqtblmem-DB(a5)
jsr -$2B2(a6) ;FreeVec
RP_notimer: bsr.w _AudioRem
IFNE MIDI
bsr.w _FreeSerial
ENDC
movem.l (sp)+,a5/a6
rts
; *************************************************************************
; StopPlayerM() -- stop the music
; *************************************************************************
_StopPlayerM: move.l a6,-(sp)
lea DB,a6
tst.b audiodevopen-DB(a6)
beq.s SP_end ;res. alloc fail.
bsr.w StopMix
move.l _module-DB(a6),d0
beq.s SP_nomod
move.l d0,a0
clr.w mmd_pstate(a0)
clr.l _module-DB(a6)
SP_nomod
IFNE MIDI
clr.b lastcmdbyte-DB(a6)
ENDC
bsr.w SoundOff
SP_end movea.l (sp)+,a6
rts
_ContModuleM tst.b audiodevopen
beq.s SP_end
move.l a0,-(sp)
bsr.w SoundOff
move.l (sp)+,a0
moveq #0,d0
bra.s contpoint
; *************************************************************************
; PlayModuleM(a0 = module) -- initialize & play it!
; *************************************************************************
_PlayModuleM: st d0
contpoint movem.l a0/d0,-(sp)
bsr _InitModuleM
movem.l (sp)+,a0/d0
movem.l a4/a6,-(sp)
lea DB,a6
tst.b audiodevopen-DB(a6)
beq PM_err ;resource allocation failure
move.l a0,d1
beq PM_err ;module failure
clr.l _module-DB(a6)
IFNE MIDI
clr.b lastcmdbyte-DB(a6)
ENDC
move.w _modnumm,d1
beq.s PM_modfound
PM_nextmod tst.l mmd_expdata(a0)
beq.s PM_modfound
move.l mmd_expdata(a0),a1
tst.l (a1)
beq.s PM_modfound ;no more modules here!
move.l (a1),a0
subq.w #1,d1
bgt.s PM_nextmod
PM_modfound cmp.b #'T',3(a0)
bne.s PM_nomodT
move.b #'0',3(a0) ;change MCNT to MCN0
PM_nomodT movea.l mmd_songinfo(a0),a1 ;song
move.l a1,_sng_struct-DB(a6)
movea.l a1,a4
move.b msng_tempo2(a1),mmd_counter(a0) ;init counter
tst.b msng_flags2(a1)
bpl.w PM_err ;does not use mixing... FAIL!
btst #0,msng_flags(a1)
bne.s PM_filon
bset #1,$bfe001
bra.s PM_filset
PM_filon bclr #1,$bfe001
PM_filset tst.b d0
beq.s PM_noclr
clr.l mmd_pline(a0)
clr.l rptline-DB(a6)
clr.w blkdelay-DB(a6)
; ---------- Set 'pblock' and 'pseq' to correct values...
PM_noclr move.w mmd_psecnum(a0),d1
move.l a2,-(sp) ;need extra register
movea.l msng_sections(a1),a2
add.w d1,d1
move.w 0(a2,d1.w),d1 ;get sequence number
add.w d1,d1
add.w d1,d1
move.w d1,mmd_pseq(a0)
movea.l msng_pseqs(a1),a2
movea.l 0(a2,d1.w),a2 ;PlaySeq...
move.w mmd_pseqnum(a0),d1
add.w d1,d1
move.w 42(a2,d1.w),d1 ;and the correct block..
move.l (sp)+,a2
move.w d1,mmd_pblock(a0)
move.w #-1,mmd_pstate(a0)
move.l a0,_module-DB(a6)
bsr.w InitMix
tst.l d0
bne.s PM_err
move.l d2,-(sp)
moveq #0,d2
move.b _mix14bit-DB(a6),d2
XREF _StartAmigaMix
jsr _StartAmigaMix(pc)
move.l (sp)+,d2
moveq #0,d0
movem.l (sp)+,a4/a6
rts
PM_err moveq #1,d0
movem.l (sp)+,a4/a6
rts
; *************************************************************************
_AudioInit: movem.l a4/a6/d3,-(sp)
lea DB,a4
movea.l 4.w,a6
lea utilityname-DB(a4),a1
moveq #0,d0
jsr -$228(a6) ;OpenLibrary()
move.l d0,UtBase
beq.s initerr
; +=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+ alloc signal bit
IFNE AUDDEV
moveq #-1,d0
jsr -$14a(a6) ;AllocSignal()
tst.b d0
bmi.s initerr
move.b d0,sigbitnum-DB(a4)
; +=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+ prepare IORequest
lea allocport-DB(a4),a1
move.b d0,15(a1) ;set mp_SigBit
move.l a1,-(sp)
suba.l a1,a1
jsr -$126(a6) ;FindTask(0)
move.l (sp)+,a1
move.l d0,16(a1) ;set mp_SigTask
lea reqlist-DB(a4),a0
move.l a0,(a0) ;NEWLIST begins...
addq.l #4,(a0)
clr.l 4(a0)
move.l a0,8(a0) ;NEWLIST ends...
; +=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+ open audio.device
lea allocreq-DB(a4),a1
lea audiodevname-DB(a4),a0
moveq #0,d0
moveq #0,d1
movea.l 4.w,a6
jsr -$1bc(a6) ;OpenDevice()
tst.b d0
bne.w initerr
ENDC
st audiodevopen-DB(a4)
moveq #0,d0
initret: movem.l (sp)+,a4/a6/d3
rts
initerr: moveq #1,d0
bra.s initret
_AudioRem: movem.l a5-a6,-(sp)
lea DB,a5
movea.l 4.w,a6
move.l UtBase,d0
beq.s 1$
move.l d0,a1
jsr -$19E(a6) ;CloseLibrary
clr.l UtBase
1$
IFNE AUDDEV
tst.b audiodevopen-DB(a5)
beq.s rem2
move.w #$000f,$dff096 ;stop audio DMA
; +=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+ close audio.device
lea allocreq-DB(a5),a1
jsr -$1c2(a6) ;CloseDevice()
clr.b audiodevopen-DB(a5)
rem2: moveq #0,d0
move.b sigbitnum-DB(a5),d0
bmi.s rem3
; +=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+ free signal bit
jsr -$150(a6) ;FreeSignal()
st sigbitnum-DB(a5)
rem3:
ENDC
movem.l (sp)+,a5-a6
rts
InitFreqTables movem.l a2-a3/d2/a6,-(sp)
move.l #6*12*2*16,d0
moveq #1,d1 ;MEMF_PUBLIC
movea.l 4.w,a6
jsr -$2AC(a6) ;AllocVec
move.l d0,_frqtblmem
beq.s ift_err
lea _freq_tables,a2
movea.l d0,a3
moveq #0,d2
1$ move.l a3,(a2)+
move.l d2,d0
subq.l #8,d0
movea.l UtBase,a0
move.l #509916,d1 ;finetune difference
jsr -$8A(a0) ;SMult32()
add.l #68583572,d0 ;C-1 freq * 65536
movea.l a3,a0
move.w $128(a6),d1 ;SysBase->AttnFlags
btst #4,d1 ;68881?
beq.s 2$
XREF _FillFreqTable_FP
jsr _FillFreqTable_FP(pc)
bra.s 3$
2$ move.l #69433,d1 ;12th root of 2 * 65536
XREF _FillFreqTable
jsr _FillFreqTable(pc)
3$ lea 6*12*2(a3),a3
addq.l #1,d2
cmp.w #16,d2
blt.s 1$
ift_end moveq #0,d0
movem.l (sp)+,a2-a3/d2/a6
rts
ift_err moveq #1,d0
movem.l (sp)+,a2-a3/d2/a6
rts
; DB in A6
FillVolTables movem.l d2-d5,-(sp)
tst.l _voltable-DB(a6)
beq.s fvt_crtnew
move.w msng_channels(a4),d0
cmp.w _prevnumch-DB(a6),d0
bne.s fvt_crtnew
move.w msng_voladj(a4),d0
cmp.w _prevadj-DB(a6),d0
bne.s fvt_crtnew
move.l msng_flags3(a4),d0
move.l d0,d1
and.b #1,d0 ;get FLAG3_STEREO
cmp.b _prevstereo-DB(a6),d0
bne.s fvt_crtnew
and.b #2,d1 ;get FLAG3_FREEPAN
cmp.b _prevfreepan-DB(a6),d1
beq.w fvt_end
fvt_crtnew tst.l _voltable-DB(a6)
bne.s 1$
move.l #64*256*2,d0
moveq #1,d1 ;MEMF_PUBLIC
move.l a6,d5
movea.l 4.w,a6
jsr -$2AC(a6) ;AllocVec
move.l d5,a6
move.l d0,_voltable-DB(a6)
beq.w fvt_err
1$ move.w msng_channels(a4),d2
move.w d2,_prevnumch-DB(a6)
move.w msng_voladj(a4),_prevadj-DB(a6)
move.l msng_flags3(a4),d0
move.l d0,d1
and.b #1,d0 ;stereo
move.b d0,_prevstereo-DB(a6)
and.b #2,d1 ;freepan
move.b d1,_prevfreepan-DB(a6)
; if(sng->sg->mix_stereo && !sng->sg->mix_freepan && numch > 1) numch /= 2;
tst.b d0
beq.s fvt_nohalf
tst.b d1
bne.s fvt_nohalf
cmp.w #1,d2
ble.s fvt_nohalf
lsr.w #1,d2
fvt_nohalf
; fill volume table
mulu #6400,d2
movea.l _voltable-DB(a6),a0 ;destination
movea.l UtBase-DB(a6),a1
moveq #0,d3 ;volcnt
fvt_outloop moveq #0,d4 ;svalcnt
move.w d3,d5
addq.w #1,d5 ;volcnt + 1...
mulu msng_voladj(a4),d5 ;* adj
fvt_inloop move.b d4,d0
lsl.w #8,d0
muls d5,d0
move.l d2,d1
jsr -$96(a1) ;SDivMod32()
move.w d0,(a0)+
addq.w #1,d4
cmp.w #256,d4
blt.s fvt_inloop
addq.w #1,d3
cmp.w #64,d3
blt.s fvt_outloop
; channel shift:
moveq #0,d5 ;newchshift
move.w msng_channels(a4),d0
cmp.w #2,d0
blo.s 1$
beq.s 2$
addq.w #2,d5
cmp.w #4,d0
bls.s 1$
addq.w #1,d5
cmp.w #8,d0
bls.s 1$
addq.w #1,d5
cmp.w #16,d0
bls.s 1$
addq.w #1,d5
cmp.w #32,d0
bls.s 1$
2$ addq.w #1,d5
1$ btst #0,msng_flags3+3(a4)
beq.s fvt_nostrshft
btst #1,msng_flags3+3(a4)
bne.s fvt_nostrshft
tst.w d5
beq.s fvt_nostrshft
subq.w #1,d5
fvt_nostrshft move.w msng_voladj(a4),d1
; test vol adj. above 100
tst.w d5
beq.s fvt_noabvol
cmp.w #200,d1
blo.s fvt_noabvol
subq.w #1,d5
beq.s fvt_noabvol
cmp.w #400,d1
blo.s fvt_noabvol
subq.w #1,d5
beq.s fvt_noabvol
cmp.w #800,d1
blo.s fvt_noabvol
subq.w #1,d5
fvt_noabvol
; test vol adj. below 100
cmp.w #100,d1
bhs.s fvt_nobevol
addq.w #1,d5
cmp.w #50,d1
bhs.s fvt_nobevol
addq.w #1,d5
cmp.w #25,d1
bhs.s fvt_nobevol
addq.w #1,d5
cmp.w #13,d1
bhs.s fvt_nobevol
addq.w #1,d5
cmp.w #7,d1
bhs.s fvt_nobevol
addq.w #1,d5
cmp.w #4,d1
bhs.s fvt_nobevol
addq.w #1,d5
cmp.w #2,d1
bhs.s fvt_nobevol
addq.w #1,d5
fvt_nobevol move.w d5,_chshift-DB(a6)
fvt_end moveq #0,d0
movem.l (sp)+,d2-d5
rts
fvt_err moveq #1,d0
movem.l (sp)+,d2-d5
rts
; DB in A6
AllocEchoBuffer ;echo length in d0
movem.l d2/d3,-(sp)
move.w _actualrate_hz-DB(a6),d1
mulu d1,d0
movea.l UtBase-DB(a6),a0
moveq #0,d1
move.w #1000,d1
jsr -$9c(a0) ;UDivMod32()
move.l d0,d2 ;ebsz
move.l d2,d3
add.l d3,d3 ;actsz
btst #FLAG3B_STEREO,msng_flags3+3(a4)
beq.s 1$
add.l d3,d3
1$ move.l d3,d0
moveq #1,d1 ;PUBLIC
bset #16,d1 ;CLEAR
move.l a6,d3
movea.l 4.w,a6
jsr -$2AC(a6) ;AllocVec
move.l d3,a6
move.l d0,_echobuffer-DB(a6)
move.l d2,_echobuffsz-DB(a6)
clr.l _echord-DB(a6)
movem.l (sp)+,d2/d3
rts
; DB in A6
FreeEchoBuffer move.l a6,-(sp)
move.l _echobuffer-DB(a6),a1
clr.l _echobuffer-DB(a6)
movea.l 4.w,a6
jsr -$2B2(a6) ;FreeVec
move.l (sp)+,a6
rts
; DB in A6
AllocMixBuffers movem.l d2/a2/a3/a6,-(sp)
movea.l a6,a3
moveq #2,d2 ;number of chip mem buffers
btst #FLAG3B_STEREO,msng_flags3+3(a4)
beq.s 1$
add.l d2,d2 ;stereo... two buffers
1$ tst.b _mix14bit-DB(a3)
beq.s 2$
add.l d2,d2 ;14bit... 4/8 buffers
2$ lea _chipbuff-DB(a3),a2
movea.l 4.w,a6
subq.w #1,d2
3$ move.l _mixbuffsize-DB(a3),d0
moveq #3,d1 ;CHIP, PUBLIC
bset #16,d1 ;CLEAR
jsr -$2AC(a6) ;AllocVec
move.l d0,(a2)+
beq.s amb_err
dbra d2,3$
move.l _mixbuffsize-DB(a3),d0
add.l d0,d0
btst #FLAG3B_STEREO,msng_flags3+3(a4)
beq.s 4$
add.l d0,d0
4$ move.l d0,d2
moveq #1,d1 ;PUBLIC
bset #16,d1 ;CLEAR
jsr -$2AC(a6) ;AllocVec
move.l d0,_mixbuff-DB(a3)
beq.s amb_err
move.l d2,d0
moveq #1,d1 ;PUBLIC
bset #16,d1 ;CLEAR
jsr -$2AC(a6) ;AllocVec
move.l d0,_mixbuff+4-DB(a3)
beq.s amb_err
move.l _mixbuffsize-DB(a3),_buffsize-DB(a3)
movem.l (sp)+,d2/a2/a3/a6
moveq #0,d0
rts
amb_err bsr.s FreeMixBuffers
movem.l (sp)+,d2/a2/a3/a6
moveq #1,d0
rts
FreeMixBuffers movem.l a2/a3/d2/a6,-(sp)
lea DB,a3
moveq #7,d2
lea _chipbuff-DB(a3),a2
movea.l 4.w,a6
1$ move.l (a2),a1
clr.l (a2)+
jsr -$2B2(a6) ;FreeVec
dbra d2,1$
move.l _mixbuff-DB(a3),a1
jsr -$2B2(a6) ;FreeVec
move.l _mixbuff+4-DB(a3),a1
jsr -$2B2(a6) ;FreeVec
clr.l _mixbuff-DB(a3)
clr.l _mixbuff+4-DB(a3)
clr.l _buffsize-DB(a3)
movem.l (sp)+,a2/a3/d2/a6
rts
; InitMix... song ptr in A4, DB in A6
InitMix: move.l a6,-(sp)
bsr AllocMixBuffers
tst.l d0
bne.w initm_err
clr.w _currleft
clr.w _currleftfract
bsr InitFreqTables
tst.l d0
bne.w initm_err
; --- set audio hardware
lea $DFF000,a0
move.w #$0780,$9A(a0) ;INTENA
move.w #$F,$96(a0) ;DMACON
move.l #3579545,d0
move.l _mixfreq-DB(a6),d1
divu d1,d0 ;d0 = period
move.l _buffsize-DB(a6),d1
lsr.l #1,d1 ;d1 = buffer length
move.w d1,$A4(a0)
move.w d1,$B4(a0)
move.w d1,$C4(a0)
move.w d1,$D4(a0)
move.w d0,$A6(a0)
move.w d0,$B6(a0)
move.w d0,$C6(a0)
move.w d0,$D6(a0)
moveq #64,d1
move.w d1,$A8(a0)
move.w d1,$B8(a0)
tst.b _mix14bit-DB(a6)
beq.s 5$
moveq #1,d1
5$ move.w d1,$C8(a0)
move.w d1,$D8(a0)
move.l #3579545,d1
divu d0,d1
move.w d1,_actualrate_hz-DB(a6)
move.w d1,d0
clr.w d1
divu d0,d1
move.w d1,_actualrate_fract-DB(a6)
; --- allocate channel structures (if not already allocated)
move.w msng_channels(a4),d0
bne.s 4$
moveq #4,d0 ;0 -> 4
4$ cmp.w _mix_channels-DB(a6),d0
beq.s 1$
movea.l a6,a0
move.l a6,-(sp)
movea.l 4.w,a6 ;ExecBase
jsr -$78(a6) ;Disable()
movea.l _chinfo-DB(a0),a1
clr.l _chinfo-DB(a0)
jsr -$7E(a6) ;Enable()
clr.w _mix_channels-DB(a0)
mulu #ci_sizeof,d0
moveq #1,d1 ;MEMF_PUBLIC
jsr -$2AC(a6) ;AllocVec
movea.l (sp)+,a6
move.l d0,_chinfo-DB(a6)
beq.s initm_err
move.w msng_channels(a4),_mix_channels-DB(a6)
bne.s 1$
move.w #4,_mix_channels-DB(a6)
1$ move.w _mix_channels-DB(a6),d0
mulu #ci_sizeof,d0
movea.l _chinfo-DB(a6),a1
movea.l a1,a0
subq.w #1,d0
2$ clr.b (a1)+
dbra d0,2$
move.w _mix_channels-DB(a6),d0
subq.w #1,d0
3$ bset #CHFLAGB_MUTED,ci_flags(a0)
bset #CHFLAGB_STARTSYN,ci_flags(a0)
lea ci_sizeof(a0),a0
dbra d0,3$
bsr.w FillVolTables
tst.l d0
bne.s initm_err
XREF _SetMixVars
jsr _SetMixVars(pc)
movea.l a4,a0
jsr _SetMixTempo(pc)
tst.b msng_m_echo(a4)
beq.s initm_noecho
cmp.b #2,msng_m_echo(a4)
bhi.s initm_noecho ;unknown echo type!
moveq #0,d0
move.w msng_m_echolen(a4),d0
bsr.w AllocEchoBuffer
initm_noecho move.l (sp)+,a6
moveq #0,d0
rts
initm_err bsr.s StopMix
move.l (sp)+,a6
moveq #1,d0
rts
StopMix: move.w #$0080,$DFF09A ;INTENA = INTF_AUD0
move.w #$F,$DFF096 ;stop audio DMA
bsr.w FreeMixBuffers
bra.w FreeEchoBuffer
IFNE MIDI
_GetSerial: movem.l a5-a6,-(sp) ;Get serial port for MIDI
lea DB,a5
bsr.s GetSer2
tst.l d0 ;got the port??
beq.s rgser ;yes
movea.l 4.w,a6 ;no..try to flush serial.device:
jsr -$84(a6) ;Forbid
lea $15e(a6),a0 ;ExecBase->DeviceList
lea serdev-DB(a5),a1 ;"serial.device"
jsr -$114(a6) ;FindName
tst.l d0
beq.s serdnotf ;no serial.device!!
move.l d0,a1
jsr -$1b6(a6) ;RemDevice
serdnotf: jsr -$8a(a6) ;and Permit
bsr.s GetSer2 ;now try it again...
rgser: movem.l (sp)+,a5-a6
rts
GetSer2: movea.l 4.w,a6
moveq #0,d0
lea miscresname-DB(a5),a1
jsr -$1f2(a6) ;OpenResource()
move.l d0,miscresbase-DB(a5)
tst.l d0
beq.s gserror
move.l d0,a6
lea medname-DB(a5),a1
moveq #0,d0 ;serial port
jsr -$6(a6) ;AllocMiscResource()
tst.l d0
bne.s gserror
lea medname-DB(a5),a1
moveq #1,d0 ;serial bits
jsr -$6(a6)
tst.l d0
beq.s gs2_allocok
moveq #0,d0
jsr -$c(a6) ;bits failed -> Free serial port
bra.s gserror
gs2_allocok move.w $dff01c,d0
btst #0,d0
sne intrson-DB(a5)
moveq #0,d0 ;TBE
lea serinterrupt-DB(a5),a1
move.l 4.w,a6
jsr -$a2(a6) ;SetIntVector()
move.l d0,prevtbe-DB(a5)
move.w #$8001,$dff09a ;TBE on
move.w #114,$dff032 ;set baud rate (SERPER)
st serportalloc-DB(a5)
moveq #0,d0
rts
gserror: moveq #-1,d0
rts
_FreeSerial: movem.l a5-a6,-(sp)
lea DB,a5
tst.l miscresbase-DB(a5)
beq.s retfs
tst.b serportalloc-DB(a5)
beq.s retfs
wmb_loop move.w $dff018,d0 ;WAIT until all data sent
btst #12,d0 ;test TSRE bit of SERDAT
beq.s wmb_loop
move.w #$0001,$dff09a ;disable TBE
movea.l 4.w,a6
move.l prevtbe-DB(a5),a1
moveq #0,d0
jsr -$a2(a6) ;SetIntVector()
fs_noptbe movea.l miscresbase-DB(a5),a6
moveq #0,d0 ;serial port
jsr -$c(a6) ;FreeMiscResource()
moveq #1,d0 ;serial bits
jsr -$c(a6)
clr.b serportalloc-DB(a5)
clr.b lastcmdbyte-DB(a5)
retfs: movem.l (sp)+,a5-a6
rts
; Message number in d0.
_InitMIDIDump: tst.b serportalloc
beq.s idd_rts
movem.l a1/a5/a6,-(sp) ;a1 = data pointer, d1 = length
lea DB,a5
movea.l 4.w,a6 ;ExecBase
jsr -$78(a6) ;Disable()
cmp.w #16,dqentries-DB(a5) ;dump queue full?
bge.s idd_exit ;exit without doing anything
lea dqwriteptr-DB(a5),a1
movea.l (a1),a0
move.w d0,(a0)+ ;store message number
cmpa.l a1,a0 ;queue end?
bne.s idd_noresetbuff
lea dumpqueue-DB(a5),a0 ;reset write pointer
idd_noresetbuff move.l a0,(a1) ;and write it back.
addq.w #1,dqentries-DB(a5)
tst.b sysx-DB(a5) ;already sending data?
bne.s idd_exit ;yes. Don't initiate new send.
clr.b lastcmdbyte-DB(a5)
bsr StartNewDump
move.w $dff018,d0 ;SERDATR
btst #13,d0
beq.s idd_exit
move.w #$8001,$dff09c ;request TBE
idd_exit jsr -$7e(a6) ;Enable()
movem.l (sp)+,a1/a5/a6
idd_rts rts
SerIntHandler: move.w #$4000,$9a(a0) ;disable..(Interrupts are enabled anyway)
move.w #1,$9c(a0) ;clear intreq bit
tst.b sysx-buffptr(a1) ;sysx??
bne.s sih_sysx
move.w bytesinbuff-buffptr(a1),d0 ;bytesinbuff
beq.s exsih ;buffer empty
movea.l readbuffptr-buffptr(a1),a5 ;get buffer read pointer
move.w #$100,d1 ;Stop bit
move.b (a5)+,d1 ;get byte
move.w d1,$30(a0) ;and push it to SERDAT
cmpa.l a1,a5 ;shall we reset ptr?
bne.s norrbuffptr ;not yet..
lea -256(a1),a5
norrbuffptr subq.w #1,d0 ;one less bytes in buffer
move.w d0,bytesinbuff-buffptr(a1) ;remember it
move.l a5,readbuffptr-buffptr(a1) ;push new read ptr back
exsih move.w #$c000,$9a(a0)
rts
sih_sysx move.w #$100,d1
movea.l sysxptr-buffptr(a1),a5 ;data pointer
move.b (a5)+,d1
move.l a5,sysxptr-buffptr(a1)
move.w d1,$30(a0) ;-> SERDAT
subq.l #1,sysxleft-buffptr(a1) ;sub data left length
bne.s exsih ;not 0w
lea DB,a5
clr.b lastcmdbyte-DB(a5)
bsr.s StartNewDump
bra.s exsih
StartNewDump: tst.w dqentries-DB(a5) ;queue empty?
beq.s snd_exit2
movea.l dqreadptr-DB(a5),a1 ;get read pointer
move.w (a1)+,d0 ;get message number (D0)
cmpa.l #dqwriteptr,a1 ;queue end?
bne.s snd_noresetbuff
lea dumpqueue-DB(a5),a1 ;reset write pointer
snd_noresetbuff move.l a1,dqreadptr-DB(a5) ;and write it back.
subq.w #1,dqentries-DB(a5)
; then attempt to search the given message (# in D0)
move.l _module-DB(a5),d1
beq.s StartNewDump
move.l d1,a1
move.l mmd_expdata(a1),d1
beq.s StartNewDump
move.l d1,a1
move.l 52(a1),d1 ;exp_dump
beq.s StartNewDump
move.l d1,a1
cmp.w (a1),d0
bge.s StartNewDump
addq.l #8,a1 ;points to MMDDump ptr table
add.w d0,d0
add.w d0,d0 ;number *= 4
adda.w d0,a1
movea.l (a1),a1
; initialize send variables (msg addr. in A0)
snd_found move.l (a1)+,sysxleft-DB(a5) ;length
move.l (a1),sysxptr-DB(a5) ;data pointer
st sysx-DB(a5)
rts
snd_exit2 clr.b sysx-DB(a5) ;finish dump
rts
_AddMIDIData move.l a6,-(sp)
lea DB,a6
bsr.s _AddMIDId
move.l (sp)+,a6
rts
_AddMIDId movem.l a1-a3/a5,-(sp)
tst.b serportalloc-DB(a6)
beq.s retamd1
movea.l 4.w,a5
lea $dff09a,a3
move.w #$4000,(a3) ;Disable interrupts
addq.b #1,$126(a5) ;ExecBase->IDNestCnt
lea buffptr-DB(a6),a2 ;end of buffer (ptr)
move.w -130(a3),d1 ;-130(a3) = $dff018 (SERDATR)
btst #13,d1
beq.s noTBEreq
move.w #$8001,2(a3) ;request TBE [2(a3) = $dff09c]
noTBEreq movea.l (a2),a1 ;buffer pointer
subq.w #1,d0 ;-1 for DBF
adddataloop move.b (a0)+,d1 ;get byte
bpl.s norscheck ;this isn't a status byte
cmp.b #$ef,d1 ;ignore system messages
bhi.s norscheck
cmp.b lastcmdbyte-DB(a6),d1 ;same as previous status byte?
beq.s samesb ;yes, skip
move.b d1,lastcmdbyte-DB(a6) ;no, don't skip but store.
norscheck move.b d1,(a1)+ ;push to midi send buffer
addq.w #1,8(a2)
samesb cmpa.l a2,a1 ;end of buffer??
bne.s noresbuffptr ;no.
lea sendbuffer-DB(a6),a1 ;reset
noresbuffptr dbf d0,adddataloop
move.l a1,(a2) ;push back new buffer ptr
subq.b #1,$126(a5)
bge.s retamd1
move.w #$c000,(a3) ;enable interrupts again
retamd1 movem.l (sp)+,a1-a3/a5
rts
ENDC
DATA
DB: ;Data base pointer
IFNE MIDI
sendbuffer ds.b 256
buffptr dc.l sendbuffer
readbuffptr dc.l sendbuffer
bytesinbuff dc.w 0
sysx dc.b 0
lastcmdbyte dc.b 0
sysxptr dc.l 0
sysxleft dc.l 0
dumpqueue ds.w 16
dqwriteptr dc.l dumpqueue
dqreadptr dc.l dumpqueue
dqentries dc.w 0
ENDC
miscresbase dc.l 0
timerdiv dc.l 470000
audiodevopen dc.b 0
IFNE AUDDEV
sigbitnum dc.b -1
ENDC
IFNE MIDI
serportalloc dc.b 0
ENDC
even
IFNE MIDI
preschgdata dc.l 0
noteondata dc.l 0
ENDC
_module dc.l 0
IFNE MIDI
bytesinnotebuff dc.w 0
noteonbuff ds.b (MAX_NUMTRACKS+2)*3
even
intrson dc.b 0,0
prevtbe dc.l 0
ENDC
IFNE MIDI
serinterrupt dc.w 0,0,0,0,0
dc.l serintname,buffptr,SerIntHandler
ENDC
IFNE AUDDEV
allocport dc.l 0,0 ;succ, pred
dc.b 4,0 ;NT_MSGPORT
dc.l 0 ;name
dc.b 0,0 ;flags = PA_SIGNAL
dc.l 0 ;task
reqlist dc.l 0,0,0 ;list head, tail and tailpred
dc.b 5,0
allocreq dc.l 0,0
dc.b 0,127 ;NT_UNKNOWN, use maximum priority (127)
dc.l 0,allocport ;name, replyport
dc.w 68 ;length
dc.l 0 ;io_Device
dc.l 0 ;io_Unit
dc.w 0 ;io_Command
dc.b 0,0 ;io_Flags, io_Error
dc.w 0 ;ioa_AllocKey
dc.l challocmask ;ioa_Data
dc.l 1 ;ioa_Length
dc.w 0,0,0 ;ioa_Period, Volume, Cycles
dc.w 0,0,0,0,0,0,0,0,0,0 ;ioa_WriteMsg
audiodevname dc.b 'audio.device',0
challocmask dc.b $F
ENDC
utilityname dc.b 'utility.library',0
IFNE MIDI
serintname dc.b 'OMEDSerialInterrupt',0
miscresname dc.b 'misc.resource',0
serdev dc.b 'serial.device',0
medname dc.b 'OctaMED Pro modplayer',0
ENDC
even
IFNE MIDI
midiresd dc.b $e0,$00,$40,$b0,$01,$00
midicontrnum ds.b 16
prevmidicpres dc.l 0,0,0,0,0,0,0,0 ; 16 * 2 bytes
; last MIDI RPN/NRPN (+1, zero = undefined)
prevmidipn ds.w 16
; last MIDI parameter type: RPN = 0, NRPN = 1
prevmidiptype ds.b 16
prevmidipbend dc.w $2000,$2000,$2000,$2000,$2000,$2000,$2000,$2000
dc.w $2000,$2000,$2000,$2000,$2000,$2000,$2000,$2000
cmd3xsettings ds.l 15 ;first word = ctrlr type, 2nd word = ctrlr num
sizeof_mcs EQU 4 ;the size of an entry
mcs_type EQU 0
mcs_controller EQU 2
ENDC
; TRACK-data structures (see definitions at the end of this file)
trackdatas ds.b TRACKDATASZ*64
XDEF trackdataptrs
; Build pointer table. This works on Devpac assembler, other assemblers
; may need modifications.
trackdataptrs
TRKCOUNT SET 0
REPT 64
dc.l trackdatas+TRKCOUNT
TRKCOUNT SET TRKCOUNT+TRACKDATASZ
ENDR
nextblock dc.b 0 ;\ DON'T SEPARATE
nxtnoclrln dc.b 0 ;/
numtracks dc.w 0 ;\ DON'T SEPARATE
numlines dc.w 0 ;/
numpages dc.w 0
nextblockline dc.w 0
rptline dc.w 0 ;\ DON'T SEPARATE
rptcounter dc.w 0 ;/
blkdelay dc.w 0 ;block delay (PT PatternDelay)
fxplineblk dc.l 0 ;for reading effects
XDEF maxaudiotrk
maxaudiotrk dc.w 4 ;max. track number accepting non-MIDI play
; Fields in struct InstrExt (easier to access this way rather than
; searching through the module).
XDEF flags,rptrptlen
holdvals ds.b 63
decays ds.b 63
finetunes ds.b 63
flags ds.b 63
ext_midipsets ds.w 63
outputdevs ds.b 63
CNOP 0,4
rptrptlen ds.l 126
; ---- user-settable variables
XDEF _mixbuffsize,_mixfreq,_mix14bit
_mixbuffsize dc.l 1024
_mixfreq dc.l 15000
_mix14bit ds.b 1
ds.b 3 ;pad
; ---- non-user-settable variables
XDEF _chipbuff,_mixbuff,_buffsize,_actualrate_hz
XDEF _actualrate_fract,_chinfo,_freq_tables
XDEF _mix_channels,_echobuffer,_echobuffsz,_voltable
XDEF _echord,_chshift,_sng_struct,UtBase
XREF _currleft,_currleftfract,_passlength,_passfract
_chipbuff ds.l 8
_mixbuff ds.l 2
_buffsize ds.l 1
_chinfo ds.l 1
_frqtblmem ds.l 1
_freq_tables ds.l 16
_voltable ds.l 1
UtBase ds.l 1
_echobuffer ds.l 1
_echobuffsz ds.l 1
_echord ds.l 1
_sng_struct ds.l 1
_actualrate_hz dc.w 1
_actualrate_fract
ds.w 1
_mix_channels ds.w 1
_prevnumch ds.w 1
_prevadj ds.w 1
_chshift ds.w 1
_prevstereo ds.b 1
_prevfreepan ds.b 1
IFND __G2
section "datachip",data,chip ;for A68k
ENDC
IFD __G2
section "datachip",data_c ;this is for Devpac 2
ENDC
XDEF _modnumm
_chipzero dc.l 0
_modnumm dc.w 0 ;number of module to play
END