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- ;============================================================================
- ; pro8player.a
- ; ~~~~~~~~~~~
- ; $VER: pro8player 6.0 (08.03.1995)
- ;
- ; The music player routine for MMD0/MMD1/MMD2 MED/OctaMED
- ; eight channel modules.
- ;
- ; Copyright © 1995 Teijo Kinnunen and RBF Software.
- ;
- ; Written by Teijo Kinnunen.
- ; Comments/questions/bug reports can be sent to:
- ; Teijo Kinnunen
- ; Oksantie 19
- ; FIN-86300 OULAINEN
- ; FINLAND
- ; email: kinnunen@stekt.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@cix.compulink.co.uk)
- ;
- ;============================================================================
-
- ;****** Feature control ******
- ;
- AUDDEV EQU 1 ;1 = allocate channels using audio.device
- CHECK EQU 1 ;1 = do range checkings (track, sample in mem etc.)
- IFFMOCT EQU 1 ;1 = play IFF multi-octave samples correctly
- HOLD EQU 1 ;1 = handle hold/decay
- PLAYMMD0 EQU 1 ;1 = play old MMD0 modules
- ;============================================================================
-
- ; 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_actplayline EQU 48
- mmd_counter EQU 50
- mmd_songsleft EQU 51
-
- ; The Song structure
- ; Instrument data here (504 bytes = 63 * 8)
- msng_numblocks EQU 504
- msng_songlen EQU 506
- msng_playseq EQU 508
- msng_deftempo EQU 764
- msng_playtransp EQU 766
- msng_flags EQU 767
- msng_flags2 EQU 768
- msng_tempo2 EQU 769
- ; msng_trkvol applies to MMD0/MMD1 only.
- msng_trkvol EQU 770
- msng_mastervol EQU 786
- msng_numsamples EQU 787
- ; Fields below apply to MMD2 modules only.
- msng_pseqs EQU 508
- msng_sections EQU 512
- msng_trkvoltbl EQU 516
- msng_numtracks EQU 520
- msng_numpseqs EQU 522
-
- ; 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
- ac_end EQU $0C
- ac_rest EQU $10
- ac_mask EQU $14
- ac_rhw EQU $16
-
- TDSZ EQU 52
-
- SECTION "text",CODE
-
- ;**************************************************************************
- ;*
- ;* 8 CHANNEL PLAY ROUTINE
- ;*
- ;**************************************************************************
-
- ; This code does the magic 8 channel thing (mixing).
- MAGIC_8TRK MACRO
- move.b 0(a3,d6.w),d3
- add.l d1,d6
- addx.w d0,d6
- add.b 0(a4,d7.w),d3
- add.l d2,d7
- move.b d3,(a1)+
- addx.w d0,d7
- ENDM
-
- _ChannelO8 clr.w trk_prevper(a5)
- movea.l trk_audioaddr(a5),a0
- clr.w ac_per(a0)
- xco8 rts
-
- _PlayNote8: ;d7(w) = trk #, d1 = note #, d3(w) = instr # a3 = addr of instr
- movea.l mmd_smplarr(a2),a0
- add.w d3,d3 ;d3 = instr.num << 2
- add.w d3,d3
- move.l 0(a0,d3.w),d5 ;get address of instrument
- IFNE CHECK
- beq.s xco8
- ENDC
- inmem8: add.b msng_playtransp(a4),d1 ;add play transpose
- add.b inst_strans(a3),d1 ;and instr. transpose
- IFNE CHECK
- tst.b inst_midich(a3)
- bne.s xco8 ;MIDI
- ENDC
- clr.b trk_vibroffs(a5) ;clr vibrato offset
- move.l d5,a0
- subq.b #1,d1
- IFNE CHECK
- tst.w 4(a0)
- bmi.s xco8 ;Synth
- ENDC
- tlwtst08: tst.b d1
- bpl.s notenot2low8
- add.b #12,d1 ;note was too low, octave up
- bra.s tlwtst08
- notenot2low8: cmp.b #62,d1
- ble.s endpttest8
- sub.b #12,d1 ;note was too high, octave down
- endpttest8:
- moveq #0,d2
- moveq #0,d3
- moveq #6,d4 ;skip (stereo+hdr) offset
- lea _periodtable+32-DB(a6),a1
- move.b trk_finetune(a5),d2 ;finetune value
- add.b d2,d2
- add.b d2,d2 ;multiply by 4...
- ext.w d2 ;extend
- movea.l 0(a1,d2.w),a1 ;period table address
- move.w 4(a0),d0 ;(Instr hdr in a0)
- btst #5,d0
- beq.s gid_nostereo
- move.b d7,d5
- and.b #3,d5
- beq.s gid_nostereo ;ch 0/4 = play left (norm.)
- cmp.b #3,d5
- beq.s gid_nostereo ;also for ch 3/7
- add.l (a0),d4 ;play right channel
- gid_nostereo
- IFNE IFFMOCT
- and.w #$F,d0
- bne.s gid_notnormal ;note # in d1 (0 - ...)
- ENDC
- gid_cont_ext move.l a1,trk_periodtbl(a5)
- add.b d1,d1
- move.w 0(a1,d1.w),d5 ;put period to d5
- move.l a0,d0
- move.l (a0),d1 ;length
- add.l d4,d0 ;skip hdr and stereo
- add.l d0,d1 ;sample end pointer
- move.w inst_repeat(a3),d2
- move.w inst_replen(a3),d3
- IFNE IFFMOCT
- bra gid_setrept
- gid_addtable dc.b 0,6,12,18,24,30
- gid_divtable dc.b 31,7,3,15,63,127
- gid_notnormal cmp.w #7,d0
- blt.s gid_not_ext
- suba.w #48,a1
- bra.s gid_cont_ext
- gid_not_ext move.l d7,-(sp)
- moveq #0,d7
- move.w d1,d7
- divu #12,d7 ;octave #
- move.l d7,d5
- cmp.w #6,d7 ;if oct > 5, oct = 5
- blt.s nohioct
- moveq #5,d7
- nohioct swap d5 ;note number in this oct (0-11) is in d5
- move.l (a0),d1
- cmp.w #6,d0
- ble.s nounrecit
- moveq #6,d0
- nounrecit add.b gid_addtable-1(pc,d0.w),d7
- move.b gid_divtable-1(pc,d0.w),d0
- divu d0,d1 ;get length of the highest octave
- swap d1
- clr.w d1
- swap d1
- move.l d1,d0 ;d0 and d1 = length of the 1st oct
- move.w inst_repeat(a3),d2
- move.w inst_replen(a3),d3
- moveq #0,d6
- move.b shiftcnt(pc,d7.w),d6
- lsl.w d6,d2
- lsl.w d6,d3
- lsl.w d6,d1
- move.b mullencnt(pc,d7.w),d6
- mulu d6,d0 ;offset of this oct from 1st oct
- add.l a0,d0 ;add base address to offset
- add.l d4,d0 ;skip header + stereo
- add.l d0,d1
- move.l a1,trk_periodtbl(a5)
- add.b octstart(pc,d7.w),d5
- add.b d5,d5
- move.w 0(a1,d5.w),d5
- move.l (sp)+,d7
- bra.s gid_setrept
- shiftcnt: dc.b 4,3,2,1,1,0,2,2,1,1,0,0,1,1,0,0,0,0
- dc.b 3,3,2,2,1,0,5,4,3,2,1,0,6,5,4,3,2,1
- mullencnt: dc.b 15,7,3,1,1,0,3,3,1,1,0,0,1,1,0,0,0,0
- dc.b 7,7,3,3,1,0,31,15,7,3,1,0,63,31,15,7,3,1
- octstart: dc.b 12,12,12,12,24,24,0,12,12,24,24,36,0,12,12,24,36,36
- dc.b 0,12,12,24,24,24,12,12,12,12,12,12,12,12,12,12,12,12
- ENDC
- gid_setrept add.l d2,d2
- add.l d0,d2 ;rep. start pointer
- cmp.w #1,d3
- bhi.s gid_noreplen2
- moveq #0,d3 ;no repeat
- bra.s gid_cont
- gid_noreplen2 add.l d3,d3
- add.l d2,d3 ;rep. end pointer
-
- gid_cont moveq #0,d4
- move.w trk_soffset(a5),d4
- add.l d4,d0
- cmp.l d0,d1
- bhi.s pn_nooffsovf8
- sub.l d4,d0
- pn_nooffsovf8 movea.l trk_audioaddr(a5),a1 ;base of this channel's regs
- move.l d0,(a1) ;put it in ac_ptr
- moveq #0,d4
- move.b trk_previnstr(a5),d4
- lea flags-DB(a6),a0
- btst #0,0(a0,d4.w) ;test flags.SSFLG_LOOP
- bhi.s repeat8
-
- tst.b trk_split(a5)
- beq.s pn8_nosplit0
- clr.l ac_rest(a1)
- subq.l #1,d1
- move.l d1,ac_end(a1)
- bra.s retsn18
-
- pn8_nosplit0 sub.l d0,d1
- lsr.l #1,d1
- move.w d1,ac_len(a1)
- move.l #_chipzero,ac_rest(a1)
- move.w #1,ac_end(a1)
- bra.s retsn18
-
- repeat8: tst.b trk_split(a5)
- bne.s pn8_split1
- move.l d3,d1
- sub.l d0,d1
- lsr.l #1,d1
- move.w d1,ac_len(a1)
- move.l d2,ac_rest(a1) ;remember rep. start
- sub.l d2,d3
- lsr.l #1,d3
- move.w d3,ac_end(a1) ;remember rep. length
- bra.s retsn18
-
- pn8_split1 move.l d2,ac_rest(a1)
- move.l d3,ac_end(a1)
- retsn18: move.w d5,ac_per(a1) ;getinsdata puts period to d5
- move.w d5,trk_prevper(a5)
- retsn28: rts
-
- _IntHandler8: movem.l d2-d7/a2-a4,-(sp)
- lea DB,a6
- lea trksplit-DB(a6),a2
- move.w currchsize2-DB(a6),d4
- ; ================ 8 channel handling (buffer swap) ======
- move.w #1600,d0
- not.b whichbuff-DB(a6) ;swap buffer
- bne.s usebuff1
- tst.b (a2)+
- beq.s tnspl0
- move.l a1,$a0(a0)
- move.w d4,$a4(a0)
- tnspl0 lea 1600(a1),a5
- tst.b (a2)+
- beq.s tnspl1
- move.l a5,$b0(a0)
- move.w d4,$b4(a0)
- tnspl1 adda.w d0,a5
- tst.b (a2)+
- beq.s tnspl2
- move.l a5,$c0(a0)
- move.w d4,$c4(a0)
- tnspl2 adda.w d0,a5
- tst.b (a2)
- beq.s buffset
- move.l a5,$d0(a0)
- move.w d4,$d4(a0)
- bra.s buffset
- usebuff1 lea 800(a1),a1
- tst.b (a2)+
- beq.s tnspl0b
- move.l a1,$a0(a0)
- move.w d4,$a4(a0)
- tnspl0b lea 1600(a1),a5
- tst.b (a2)+
- beq.s tnspl1b
- move.l a5,$b0(a0)
- move.w d4,$b4(a0)
- tnspl1b adda.w d0,a5
- tst.b (a2)+
- beq.s tnspl2b
- move.l a5,$c0(a0)
- move.w d4,$c4(a0)
- tnspl2b tst.b (a2)
- beq.s buffset
- adda.w d0,a5
- move.l a5,$d0(a0)
- move.w d4,$d4(a0)
- buffset move.w #1<<7,$9c(a0)
- lea tmpvol-DB(a6),a2
- move.b (a2)+,$a9(a0)
- move.b (a2)+,$b9(a0)
- move.b (a2)+,$c9(a0)
- move.b (a2),$d9(a0)
- tst.b _hq-DB(a6)
- beq.s nohq
- move.l #2031616,d3 ;124 * 16384
- bra.s startfillb
- nohq move.l #3719168,d3 ;227 * 16384
- ; ============== fill buffers ============
- startfillb moveq #0,d4 ;mask for DMA
- lea track0hw-DB(a6),a2
- tst.b trksplit-DB(a6)
- bne.s tspl0c
- bsr.w pushregs
- bra.s tnspl0c
- tspl0c bsr.s fillbuf
- movea.l a5,a1
- tnspl0c lea track1hw-DB(a6),a2
- tst.b trksplit+1-DB(a6)
- bne.s tspl1c
- bsr.w pushregs
- bra.s tnspl1c
- tspl1c bsr.s fillbuf
- movea.l a5,a1
- tnspl1c lea track2hw-DB(a6),a2
- tst.b trksplit+2-DB(a6)
- bne.s tspl2c
- bsr.w pushregs
- bra.s tnspl2c
- tspl2c bsr.s fillbuf
- movea.l a5,a1
- tnspl2c lea track3hw-DB(a6),a2
- tst.b trksplit+3-DB(a6)
- bne.s tspl3c
- bsr.w pushregs
- bra.w do_play8
- tspl3c bsr.s fillbuf
- bra.w do_play8
- ; =========================================================
- ;calculate channel A period
- fillbuf: move.l d3,d7
- move.w ac_per(a2),d6
- beq.s setpzero0
- move.l d7,d2
- divu d6,d2
- moveq #0,d1
- move.w d2,d1
- add.l d1,d1
- add.l d1,d1
- ;get channel A addresses
- move.l ac_end(a2),a5
- move.l (a2),d0
- beq.s setpzero0
- chA_dfnd move.l d0,a3 ;a3 = start address, a5 = end address
- ;calc bytes before end
- mulu currchsize-DB(a6),d2
- clr.w d2
- swap d2
- ; d2 = # of bytes/fill
- add.l a3,d2 ;d2 = end position after this fill
- sub.l a5,d2 ;subtract sample end
- bmi.s norestart0
- move.l ac_rest(a2),d0
- beq.s rst0end
- move.l d0,(a2)
- move.l d0,a3
- bra.s norestart0
- rst0end clr.l (a2)
- setpzero0 lea zerodata-DB(a6),a3
- moveq #0,d1
- norestart0
- ;channel B period
- move.w SIZE4TRKHW+ac_per(a2),d6
- beq.s setpzero0b
- divu d6,d7
- moveq #0,d2
- move.w d7,d2
- add.l d2,d2
- add.l d2,d2
- ;channel B addresses
- move.l SIZE4TRKHW+ac_end(a2),a5
- move.l SIZE4TRKHW(a2),d0
- beq.s setpzero0b
- move.l d0,a4
- mulu currchsize-DB(a6),d7
- clr.w d7
- swap d7
- add.l a4,d7
- sub.l a5,d7
- bmi.s norestart0b
- move.l SIZE4TRKHW+ac_rest(a2),d0
- beq.s rst0endb
- move.l d0,SIZE4TRKHW(a2)
- move.l d0,a4
- bra.s norestart0b
- rst0endb clr.l SIZE4TRKHW(a2)
- setpzero0b lea zerodata-DB(a6),a4
- moveq #0,d2
- norestart0b moveq #0,d6
- moveq #0,d7
- moveq #0,d0
- move.w d3,-(sp)
- swap d1
- swap d2
- lea 1600(a1),a5 ;get addr. of next buffer
- tst.b _hq-DB(a6)
- bne.w magic_hq
- move.w currchszcnt-DB(a6),d5
- do8trkmagic
- MAGIC_8TRK ;20 times..
- MAGIC_8TRK
- MAGIC_8TRK
- MAGIC_8TRK
- MAGIC_8TRK
- MAGIC_8TRK
- MAGIC_8TRK
- MAGIC_8TRK
- MAGIC_8TRK
- MAGIC_8TRK
- MAGIC_8TRK
- MAGIC_8TRK
- MAGIC_8TRK
- MAGIC_8TRK
- MAGIC_8TRK
- MAGIC_8TRK
- MAGIC_8TRK
- MAGIC_8TRK
- MAGIC_8TRK
- MAGIC_8TRK
-
- dbf d5,do8trkmagic ;do until cnt zero
- end8trkmagic swap d6
- swap d7
- clr.w d6
- clr.w d7
- swap d6
- swap d7
- add.l d6,(a2)
- add.l d7,SIZE4TRKHW(a2)
- move.w (sp)+,d3
- rts
- ; The following code is executed only in HQ-mode
- magic_hq move.w currchsize2-DB(a6),d5
- lsr.w #1,d5
- subq.w #1,d5
- dohq8trkmagic ;this runs quite efficiently in a cache
- MAGIC_8TRK
- MAGIC_8TRK
- MAGIC_8TRK
- MAGIC_8TRK
- dbf d5,dohq8trkmagic
- bra.s end8trkmagic
-
- _Wait1line: move.l d0,-(sp)
- moveq #$79,d0
- wl0: move.b $dff007,d1
- wl1: cmp.b $dff007,d1
- beq.s wl1
- dbf d0,wl0
- move.l (sp)+,d0
- rts
- ; ========== this channel is not splitted
- pushregs move.l ac_rhw(a2),a3 ;address of real hardware
- tst.w ac_per(a2)
- beq.s pregs_stop
- move.w ac_per(a2),ac_per(a3) ;push new period
- move.l (a2),d0 ;ac_ptr
- beq.s pregs_nonewp
- move.w ac_mask(a2),d1
- move.w d1,$96(a0) ;stop DMA of curr. channel
- or.w d1,d4
- clr.l (a2)+
- move.l d0,(a3)+ ;to real ac_ptr
- move.w (a2),(a3) ;push ac_len
- pregs_nonewp lea 800(a1),a1 ;next buffer
- rts
- pregs_stop move.w ac_mask(a2),d1
- move.w d1,$96(a0)
- bra.s pregs_nonewp
- ; ========== should we start DMA of non-splitted channels?
- do_play8 tst.w d4
- beq.s do_play8_b ;no.
- bsr.s _Wait1line
- bset #15,d4
- move.w d4,$96(a0)
- bsr.s _Wait1line
- lsr.b #1,d4
- bcc.s plr_nos8dma0
- move.l track0hw+ac_rest-DB(a6),$a0(a0)
- move.w track0hw+ac_end-DB(a6),$a4(a0)
- plr_nos8dma0 lsr.b #1,d4
- bcc.s plr_nos8dma1
- move.l track1hw+ac_rest-DB(a6),$b0(a0)
- move.w track1hw+ac_end-DB(a6),$b4(a0)
- plr_nos8dma1 lsr.b #1,d4
- bcc.s plr_nos8dma2
- move.l track2hw+ac_rest-DB(a6),$c0(a0)
- move.w track2hw+ac_end-DB(a6),$c4(a0)
- plr_nos8dma2 lsr.b #1,d4
- bcc.s do_play8_b
- move.l track3hw+ac_rest-DB(a6),$d0(a0)
- move.w track3hw+ac_end-DB(a6),$d4(a0)
- ; ========== player starts here...
- do_play8_b movea.l _module8-DB(a6),a2
- move.l a2,d0
- beq.w plr_exit
- move.l mmd_songinfo(a2),a4
- moveq #0,d3
- lea mmd_counter(a2),a0
- move.b (a0),d3
- addq.b #1,d3
- cmp.b msng_tempo2(a4),d3
- bge.s plr_pnewnote8 ;play new note
- move.b d3,(a0)
- bra.w nonewnote ;do just fx
- ; --- new note!! first get address of current block
- plr_pnewnote8: clr.b (a0)
- tst.w blkdelay-DB(a6)
- beq.s plr_noblkdelay8
- subq.w #1,blkdelay-DB(a6)
- bne.w nonewnote
- ; -------- GET ADDRESS OF NOTE DATA --------------------------------------
- plr_noblkdelay8 move.w mmd_pblock(a2),d0
- bsr.w GetNoteDataAddr
- moveq #0,d7 ;number of track
- moveq #0,d4
- IFNE PLAYMMD0
- cmp.b #'1',3(a2)
- sge d5 ;d5 set -> >= MMD1
- ENDC
- lea trackdata8-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
- IFNE PLAYMMD0
- tst.b d5
- bne.s plr_mmd1_1
- move.b (a3)+,d0
- move.b (a3),d3
- addq.l #2,a3
- lsr.b #4,d3
- bclr #7,d0
- beq.s plr_bseti4
- bset #4,d3
- plr_bseti4 bclr #6,d0
- beq.s plr_bseti5
- bset #5,d3
- plr_bseti5 move.b d0,trk_currnote(a5)
- beq.s plr_nngok
- move.b d0,(a5)
- bra.s plr_nngok
- plr_mmd1_1
- ENDC
- 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
- ; ---------------- check if there's an instrument number
- plr_nngok 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,d1
- asl.w #3,d3
- lea 0(a4,d3.w),a0 ;a0 contains now address of it
- move.l a0,trk_previnstra(a5)
- move.b inst_strans(a0),trk_stransp(a5)
- ; ---------------- set volume to 64
- movea.l trk_audioaddr(a5),a0
- movea.l ac_vol(a0),a0 ;ptr to volume hardware register
- moveq #64,d0
- move.b d0,(a0)
- move.b d0,trk_prevvol(a5)
- ; ---------------- remember some values of this instrument
- lea holdvals-DB(a6),a0
- adda.w d1,a0
- IFNE HOLD
- move.b (a0),trk_inithold(a5) ;hold
- ENDC
- move.b 2*63(a0),trk_finetune(a5) ;finetune
- ; ---------------- 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 trackdata8-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 _PlayNote8 ;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_exit movem.l (sp)+,d2-d7/a2-a4
- moveq #1,d0
- rts
-
- 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...
- cmp.b #'2',3(a2) ;MMD2?
- bne.s plr_noMMD2_0
- ; ********* 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
- bpl.s plr_changeblk ;neg. values for future expansion
- bra.s plr_skipseq ;(skip them)
- ; ********* BELOW CODE FOR MMD0/MMD1 ONLY *******************************
- plr_noMMD2_0 move.w mmd_pseqnum(a2),d0 ;get play sequence number
- tst.b nextblock-DB(a6)
- bmi.s plr_noadvseq_b ;Bxx sets nextblock to -1
- addq.w #1,d0 ;advance sequence number
- plr_noadvseq_b cmp.w msng_songlen(a4),d0 ;is this the highest seq number??
- blt.s plr_notagain_b ;no.
- moveq #0,d0 ;yes: restart song
- plr_notagain_b move.b d0,mmd_pseqnum+1(a2) ;remember new playseq-#
- lea msng_playseq(a4),a0 ;offset of sequence table
- move.b 0(a0,d0.w),d0 ;get number of the block
- ; ********* BELOW CODE FOR BOTH FORMATS *********************************
- 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 trackdata8-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
- IFNE PLAYMMD0
- cmp.b #'1',3(a2)
- bge.s plr_mmd1_2
- move.b (a0),d7 ;# of tracks
- move.w d0,d1
- add.w d0,d0 ;d0 * 2
- add.w d1,d0 ;+ d0 = d0 * 3
- mulu d7,d0
- lea 2(a0,d0.w),a3
- subq.b #1,d7
- plr_chkholdb movea.l (a5)+,a1 ;track data
- tst.b trk_noteoffcnt(a1) ;hold??
- bmi.s plr_holdendb ;no.
- move.b (a3),d1 ;get the 1st byte..
- bne.s plr_hold1b
- move.b 1(a3),d1
- and.b #$f0,d1
- beq.s plr_holdendb ;don't hold
- bra.s plr_hold2b
- plr_hold1b and.b #$3f,d1 ;note??
- beq.s plr_hold2b ;no, cont hold..
- move.b 1(a3),d1
- and.b #$0f,d1 ;get cmd
- subq.b #3,d1 ;is there command 3 (slide)
- bne.s plr_holdendb ;no -> end holding
- plr_hold2b add.b d3,trk_noteoffcnt(a1) ;continue holding...
- plr_holdendb addq.l #3,a3 ;next note
- dbf d7,plr_chkholdb
- rts
- plr_mmd1_2
- ENDC
- 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 trackdata8-DB(a6),a1
- plr_loop1_1 movea.l (a1)+,a5
- clr.b trk_fxtype(a5)
- move.b (a3),d0 ;command #
- beq.s plr_loop1_end
- moveq #0,d4
- move.b 1(a3),d4 ;data byte
- IFNE PLAYMMD0
- cmp.b #3,d6 ;if adv == 3 -> MMD0
- bne.s doprefx_mmd12mask
- and.w #$0F,d0
- bra.s doprefx_mmd0maskd
- doprefx_mmd12mask
- ENDC
- and.w #$1F,d0
- doprefx_mmd0maskd
- bsr.s DoPreFX
- or.b d0,trk_fxtype(a5)
- plr_loop1_end adda.w d6,a3 ;next track...
- addq.w #1,d7
- cmp.w numtracks-DB(a6),d7
- blt.s plr_loop1_1
- addq.w #1,d5
- cmp.w numpages-DB(a6),d5
- bls.s plr_loop1
- rts
-
- ; *******************************************************************
- ; DoPreFX: Perform effects that must be handled before note playing
- ; *******************************************************************
- ; args: a6 = DB d0 = command number (w)
- ; a5 = track data d5 = note number
- ; a4 = song d4 = data
- ; d7 = track #
- ; returns: d0 = 0: play - d0 = 1: don't play
-
- rtplay MACRO
- moveq #0,d0
- rts
- ENDM
- rtnoplay MACRO
- moveq #1,d0
- rts
- ENDM
-
- DoPreFX: add.b d0,d0 ;* 2
- move.w f_table(pc,d0.w),d0
- jmp fst(pc,d0.w)
- f_table dc.w fx-fst,fx-fst,fx-fst,f_03-fst,fx-fst,fx-fst,fx-fst,fx-fst
- dc.w f_08-fst,f_09-fst,fx-fst,f_0b-fst,f_0c-fst,fx-fst,fx-fst,f_0f-fst
- dc.w fx-fst,fx-fst,fx-fst,fx-fst,fx-fst,f_15-fst,f_16-fst,fx-fst
- dc.w fx-fst,f_19-fst,fx-fst,fx-fst,fx-fst,f_1d-fst,f_1e-fst,f_1f-fst
- fst
- ; ---------------- tempo (F)
- f_0f tst.b d4 ;test effect qual..
- beq fx0fchgblck ;if effect qualifier (last 2 #'s)..
- cmp.b #$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 _End8Play
- addq.l #8,sp ;2 subroutine levels
- bra.w plr_exit
- f_ffe_no8 rtplay
- notcmdfe: cmp.b #$fd,d4 ;change period
- bne.s isfxff
- ; ---------------- FFD, change the period, don't replay the note
- move.l trk_periodtbl(a5),d1 ;period table
- beq.s f_1frts
- movea.l d1,a0
- move.b trk_currnote(a5),d0
- subq.b #1,d0 ;sub 1 to make "real" note number
- IFNE CHECK
- bmi.s f_1frts
- ENDC
- add.b msng_playtransp(a4),d0
- add.b trk_stransp(a5),d0
- add.w d0,d0
- bmi.s f_1frts
- move.w 0(a0,d0.w),trk_prevper(a5) ;get & push the period
- rtnoplay
- isfxff: cmp.b #$ff,d4 ;note off??
- bne.s f_ff_rts
- bsr.w _ChannelO8
- f_ff_rts rtplay
- ; ---------------- F00, called Pattern Break in ST
- fx0fchgblck: move.b #1,nextblock-DB(a6)
- bra.s f_ff_rts
- ; ---------------- change volume
- f_0c btst #4,msng_flags(a4) ;look at flags
- bne.s volhex8
- move.b d4,d1 ;get again
- lsr.b #4,d4 ;get number from left
- mulu #10,d4 ;number of tens
- and.b #$0f,d1 ;this time don't get tens
- add.b d1,d4 ;add them
- volhex8
- IFNE CHECK
- cmp.b #64,d4
- bhi.s go_nocmd8
- ENDC
- movea.l trk_audioaddr(a5),a0
- movea.l ac_vol(a0),a0
- move.b d4,(a0)
- go_nocmd8 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
- ; ---------------- note off time set??
- f_08
- IFNE HOLD
- and.b #$0f,d4
- 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
- cmp.b #'2',3(a2)
- beq.s chk0b_mmd2
- cmp.w msng_songlen(a4),d4
- bhi.s f_0b_rts
- bra.s chk0b_end
- 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 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
-
- ; *******************************************************************
- ; DoFX: Handle effects, hold/fade etc.
- ; *******************************************************************
- DoFX moveq #0,d3
- move.b mmd_counter(a2),d3
- IFNE HOLD
- lea trackdata8-DB(a6),a1
- ; Loop 1: Hold/Fade handling
- moveq #0,d7 ;clear track count
- dofx_loop1 movea.l (a1)+,a5
- ; *******************************************************************
- ; HoldAndFade: Handle hold/fade
- ; *******************************************************************
- ; args: a5 = track data
- ; a6 = DB
- ; d7 = track #
- ; scratches: d0, d1, a0, a1
-
- HoldAndFade tst.b trk_noteoffcnt(a5)
- bmi.s plr_haf_dofx
- subq.b #1,trk_noteoffcnt(a5)
- bpl.s plr_haf_dofx
- bsr.w _ChannelO8 ;hold time expired
- plr_haf_dofx 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
- IFNE PLAYMMD0
- cmp.b #'1',3(a2)
- bge.s dofx_sbd_nommd0
- bsr.w StoreBlkDimsMMD0
- bra.s dofx_sbd_mmd0
- dofx_sbd_nommd0
- ENDC
- 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 trackdata8-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
- IFNE PLAYMMD0
- cmp.b #3,d6 ;if adv == 3 -> MMD0
- bne.s dofx_mmd12mask
- and.w #$0F,d0
- bra.s dofx_mmd0maskd
- dofx_mmd12mask
- ENDC
- and.w #$1F,d0
- dofx_mmd0maskd 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 trackdata8-DB(a6),a1
- dofx_loop3 movea.l (a1)+,a5
- ; *******************************************************************
- ; UpdatePerVol: Update audio registers (period & volume) after FX
- ; *******************************************************************
- UpdatePerVol move.w trk_prevper(a5),d1
- add.w trk_vibradjust(a5),d1
- movea.l trk_audioaddr(a5),a0
- sub.w trk_arpadjust(a5),d1
- clr.l trk_vibradjust(a5) ;clr both adjusts
- move.w d1,ac_per(a0)
- dofx_lend3 addq.w #1,d7
- cmp.w numtracks-DB(a6),d7
- blt.s dofx_loop3
- 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
- IFNE PLAYMMD0
- cmp.b #'1',3(a2)
- blt.s GetCmdPtrMMD0
- ENDC
- 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
- IFNE PLAYMMD0
- GetCmdPtrMMD0 moveq #0,d0
- move.b (a0),d0 ;get numtracks
- mulu d0,d2 ;line # * numtracks
- move.w d2,d0
- add.w d2,d2
- add.w d0,d2 ; *= 3...
- lea 3(a0,d2.l),a0 ;offs: 2 = header, 1 = note
- moveq #3,d6
- rts
- ENDC
-
- ; *******************************************************************
- ; 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
- IFNE PLAYMMD0
- cmp.b #'1',3(a2)
- blt.s GetNDAddrMMD0
- ENDC
- 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 (a3),d0
- lea 8(a3,d0.l),a3 ;address of current note
- rts
-
- IFNE PLAYMMD0
- GetNDAddrMMD0 bsr.w StoreBlkDimsMMD0
- move.w numlines-DB(a6),d1
- move.w mmd_pline(a2),d0
- cmp.w d1,d0 ;check if block end exceeded...
- bls.s plr_nolinex2
- move.w d1,d0
- plr_nolinex2 move.w d0,d1
- add.w d0,d0
- add.w d1,d0 ;d0 = d0 * 3
- moveq #0,d1
- move.b (a3),d1 ;numtracks
- mulu d1,d0
- lea 2(a3,d0.l),a3 ;address of current note
- rts
- ENDC
-
- ; *******************************************************************
- ; StoreBlockDims: Store block dimensions
- ; *******************************************************************
- ; args: a0 = block ptr, a6 = DB
-
- StoreBlockDims move.w (a0)+,d0
- cmp.w #8,d0
- ble.s sbd_lt8
- moveq #8,d0
- sbd_lt8 move.w d0,numtracks-DB(a6) ;numtracks & lines
- move.w (a0)+,numlines-DB(a6)
- 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
-
- IFNE PLAYMMD0
- StoreBlkDimsMMD0
- clr.w numpages-DB(a6)
- moveq #0,d0
- move.b (a0)+,d0 ;numtracks
- cmp.w #8,d0
- ble.s sbd_lt8_2
- moveq #8,d0
- sbd_lt8_2 move.w d0,numtracks-DB(a6)
- move.b (a0),d0 ;numlines
- move.w d0,numlines-DB(a6)
- rts
- 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)
- 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_xx-fxs,fx_0d-fxs,fx_xx-fxs
- dc.w fx_0f-fxs
- dc.w fx_xx-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
- fxs:
- ; **************************************** Effect 01 ******
- fx_01 tst.b d3
- bne.s fx_01nocnt0
- btst #5,msng_flags(a4) ;FLAG_STSLIDE??
- bne.s fx_01rts
- fx_01nocnt0 move.w trk_prevper(a5),d0
- sub.w d4,d0
- cmp.w #113,d0
- bge.s fx_01noovf
- move.w #113,d0
- fx_01noovf move.w d0,trk_prevper(a5)
- fx_xx ;fx_xx is just a RTS
- fx_01rts rts
- ; **************************************** Effect 11 ******
- fx_11 tst.b d3
- bne.s fx_11rts
- sub.w d4,trk_prevper(a5)
- fx_11rts rts
- ; **************************************** Effect 02 ******
- fx_02 tst.b d3
- bne.s fx_02nocnt0
- btst #5,msng_flags(a4)
- bne.s fx_02rts
- fx_02nocnt0 add.w d4,trk_prevper(a5)
- fx_02rts rts
- ; **************************************** Effect 12 ******
- fx_12 tst.b d3
- bne.s fx_12rts
- add.w d4,trk_prevper(a5)
- fx_12rts 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
- move.b sinetable(pc,d0.w),d0
- ext.w d0
- muls trk_vibrsz(a5),d0
- move.b trk_vibshift(a5),d1
- asr.w d1,d0
- move.w d0,trk_vibradjust(a5)
- move.b trk_vibrspd(a5),d0
- add.b d0,trk_vibroffs(a5)
- fx_04rts rts
- 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
- ; **************************************** 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 movea.l trk_audioaddr(a5),a0
- movea.l ac_vol(a0),a0
- move.b d1,(a0)
- 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
- add.w d4,d1 ;add the period
- cmp.w d0,d1
- bge.s targreached
- bra.s targnreach
- subper: sub.w d4,d1 ;subtract
- cmp.w d0,d1 ;compare current period to target period
- bgt.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
- ; **************************************** 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 #$0f,d1 ;retrig?
- beq.s fx_18rts
- moveq #0,d0
- move.b d3,d0
- divu d1,d0
- swap d0 ;get modulo of counter/tick
- tst.w d0
- bne.s fx_18rts
- bra playfxnote ;retrigger
- ; **************************************** Effect 0F ******
- ; see below...
- ; *********************************************************
-
- ; **** a separate routine for handling command 0F
- fx_0f cmp.b #$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/d3/d6,-(sp)
- moveq #0,d3
- move.b trk_previnstr(a5),d3 ;and prev. sample #
- movea.l trk_previnstra(a5),a3
- bsr _PlayNote8
- movem.l (sp)+,a1/a3/d3/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 #$f8,d4 ;f8 = filter off
- beq.s plr_filteroff
- cmp.b #$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
-
- _SetTempo: move.l _module8-DB(a6),d1
- beq.s ST_x
- movea.l d1,a0
- movea.l mmd_songinfo(a0),a0
- move.w d0,msng_deftempo(a0)
- tst.w d0
- ble.s ST_maxszcnt
- cmp.w #9,d0
- bls.s ST_nodef8tempo
- ST_maxszcnt moveq #10,d0
- ST_nodef8tempo add.b #9,d0
- move.b d0,currchszcnt-DB+1(a6)
- tst.b msng_flags(a0) ;test SLOWHQ compatibility flag
- lea eightchsizes-10-DB(a6),a0
- bmi.s ST_slowhq ;SLOWHQ set
- tst.b _hq-DB(a6)
- beq.s ST_nohq
- move.b 10(a0,d0.w),d0 ;get buffersize / 4
- add.w d0,d0 ;->buffersize / 2
- bra.s ST_hqcont
- ST_slowhq move.b 0(a0,d0.w),d0
- add.w d0,d0
- bra.s ST_hqcont
- ST_nohq move.b 0(a0,d0.w),d0 ;get buffersize / 2
- ST_hqcont move.w d0,currchsize2-DB(a6)
- asl.w #3,d0 ;get buffersize * 4
- move.w d0,currchsize-DB(a6)
- ST_x rts
-
- _Rem8chan: move.l a6,-(sp)
- lea DB,a6
- move.b eightrkon-DB(a6),d0
- beq.s no8init
- clr.b eightrkon-DB(a6)
- move.w #1<<7,$dff09a
- move.l prevaud-DB(a6),d0
- beq.s no8init
- move.l d0,a1
- move.l 4,a6
- moveq #7,d0
- jsr -$a2(a6)
- no8init move.l (sp)+,a6
- rts
-
- _End8Play: tst.b play8
- beq.s noend8play
- move.w #1<<7,$dff09a
- move.w #$F,$dff096
- clr.b play8
- noend8play rts
-
- ; *************************************************************************
- ; *************************************************************************
- ; *********** P U B L I C F U N C T I O N S ***********
- ; *************************************************************************
- ; *************************************************************************
-
- xdef _PlayModule8
- xdef _InitPlayer8,_RemPlayer8,_StopPlayer8
- xdef _ContModule8
-
- ; *************************************************************************
- ; InitModule8(a0 = module) -- extract expansion data etc.. from the module
- ; *************************************************************************
-
- _InitModule8: movem.l a2-a3/a6/d2,-(sp)
- lea DB,a6
- move.l a0,d0
- beq.w IM_exit ;0 => xit
- lea holdvals-DB(a6),a2
- movea.l mmd_songinfo(a0),a3
- move.l mmd_expdata(a0),d0 ;expdata...
- beq.s IM_clrhlddec ;none here
- move.l d0,a1
- move.l 4(a1),d0 ;exp_smp
- beq.s IM_clrhlddec ;again.. nothing
- move.l d0,a0 ;InstrExt...
- move.w 8(a1),d2 ;# of entries
- beq.s IM_clrhlddec
- subq.w #1,d2 ;- 1 (for dbf)
- move.w 10(a1),d0 ;entry size
- IM_loop1 clr.b 63(a2) ;clear finetune
- cmp.w #3,d0
- ble.s IM_noftune
- move.b 3(a0),63(a2)
- IM_noftune clr.b 126(a2) ;clear flags
- cmp.w #6,d0
- blt.s IM_noflags
- move.b 5(a0),126(a2) ;InstrExt.flags -> flags
- bra.s IM_gotflags
- IM_noflags cmp.w #1,inst_replen(a3)
- bls.s IM_gotflags
- bset #0,126(a2)
- IM_gotflags move.b (a0),(a2)+ ;InstrExt.hold -> holdvals
- adda.w d0,a0 ;ptr to next InstrExt
- addq.l #8,a3 ;next instrument...
- dbf d2,IM_loop1
- bra.s IM_exit
- IM_clrhlddec moveq #125,d0 ;no InstrExt => clear holdvals/decays
- IM_loop2 clr.b (a2)+
- dbf d0,IM_loop2
- ; -------- For (very old) MMDs, with no InstrExt, set flags/SSFLG_LOOP.
- lea flags,a2
- moveq #62,d0
- IM_loop4 cmp.w #1,inst_replen(a3)
- bls.s IM_noreptflg
- bset #0,(a2)
- IM_noreptflg addq.l #1,a2
- addq.l #8,a3 ;next inst
- dbf d0,IM_loop4
- IM_exit movem.l (sp)+,a2-a3/a6/d2
- rts
-
-
- ; *************************************************************************
- ; ContModule8(a0 = module) -- continue playing
- ; *************************************************************************
- _ContModule8 bsr.w _End8Play
- moveq #0,d0
- bra.s contpoint8
- ; *************************************************************************
- ; PlayModule8(a0 = module) -- init and play a module
- ; *************************************************************************
- _PlayModule8: st d0
- contpoint8 move.l a6,-(sp)
- lea DB,a6
- movem.l a0/d0,-(sp)
- bsr _InitModule8
- movem.l (sp)+,a0/d0
- IFNE AUDDEV
- tst.b audiodevopen-DB(a6)
- beq PM_end ;resource allocation failure
- ENDC
- move.l a0,d1
- beq.w PM_end ;module failure
- bsr.w _End8Play
- clr.l _module8-DB(a6)
- clr.l tmpvol-DB(a6)
- move.w _modnum8,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.b msng_tempo2(a1),mmd_counter(a0) ;init counter
- 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 cmp.b #'2',3(a0)
- bne.s PM_oldpbset
- 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
- bra.s PM_setblk
- PM_oldpbset move.w mmd_pseqnum(a0),d1
- add.w #msng_playseq,d1
- move.b 0(a1,d1.w),d1 ;get first playseq entry
- ext.w d1
- PM_setblk move.w d1,mmd_pblock(a0)
- move.w #-1,mmd_pstate(a0)
- move.l a0,_module8-DB(a6)
- move.l mmd_expdata(a0),d0
- beq.s PM_start
- movea.l d0,a0
- lea 36(a0),a0 ;track split mask
- bsr.s _SetChMode
- PM_start bsr.s _Start8Play
- PM_end move.l (sp)+,a6
- rts
-
- _SetChMode ;a0 = address of 4 UBYTEs
- movem.l a2/d2,-(sp)
- lea trksplit-DB(a6),a2
- lea t038+trk_split-DB(a6),a1
- moveq #3,d0
- moveq #0,d1
- scm_loop lsr.b #1,d1
- move.b (a0)+,d2
- beq.s scm_split
- moveq #0,d2
- bra.s scm_nosplit
- scm_split or.b #8,d1
- st d2
- scm_nosplit move.b d2,(a1)
- move.b d2,4*TDSZ(a1)
- lea TDSZ(a1),a1
- move.b d2,(a2)+
- dbf d0,scm_loop
- move.w d1,chdmamask-DB(a6)
- movem.l (sp)+,a2/d2
- rts: rts
-
- _Start8Play: ;d0 = pstate
- lea _audiobuff,a0
- move.w #1600-1,d1
- clrbuffloop: clr.l (a0)+ ;clear track buffers
- dbf d1,clrbuffloop
- move.l _module8-DB(a6),d0
- beq.s rts
- move.l d0,a0
- movea.l mmd_songinfo(a0),a0
- move.w msng_deftempo(a0),d0 ;get deftempo
- bsr.w _SetTempo
- lea $dff000,a0
- move.w currchsize2-DB(a6),d0
- move.w d0,$a4(a0) ;set audio buffer sizes
- move.w d0,$b4(a0) ;according to tempo selection
- move.w d0,$c4(a0)
- move.w d0,$d4(a0)
- tst.b _hq-DB(a6)
- bne.s s8p_hq
- move.w #227,d1
- bra.s s8p_nohq
- s8p_hq move.w #124,d1
- s8p_nohq move.w d1,$a6(a0)
- move.w d1,$b6(a0)
- move.w d1,$c6(a0)
- move.w d1,$d6(a0)
- move.l #_audiobuff,$a0(a0)
- move.l #_audiobuff+800,$b0(a0)
- move.l #_audiobuff+1600,$c0(a0)
- move.l #_audiobuff+2400,$d0(a0)
- moveq #64,d1
- move.w d1,$a8(a0)
- move.w d1,$b8(a0)
- move.w d1,$c8(a0)
- move.w d1,$d8(a0)
- clr.b whichbuff-DB(a6)
- movea.l 4,a1
- move.w #$4000,$9a(a0)
- addq.b #1,$126(a1)
- lea track0hw-DB(a6),a1
- moveq #7,d1
- clrtrkloop clr.l (a1)
- clr.w ac_per(a1)
- adda.w #SIZE4TRKHW/4,a1
- dbf d1,clrtrkloop
- move.w #$F,$dff096 ;audio DMA off
- bsr.w _Wait1line ;wait until all stopped
- st play8-DB(a6)
- move.w #$8080,$9a(a0)
- move.w chdmamask-DB(a6),d1
- bset #15,d1
- move.w d1,$96(a0)
- movea.l 4,a1
- subq.b #1,$126(a1)
- bge.s x8play
- move.w #$c000,$9a(a0)
- x8play rts
- ; *************************************************************************
- ; InitPlayer8() -- allocate interrupt, audio, serial port etc...
- ; *************************************************************************
- _InitPlayer8: bsr.s _AudioInit
- tst.l d0
- bne.s IP_error
- rts
- IP_error bsr.s _RemPlayer8
- moveq #-1,d0
- rts
- ; *************************************************************************
- ; StopPlayer8() -- stop music
- ; *************************************************************************
- _StopPlayer8: move.l _module8,d0
- beq.s SP_nomod
- movea.l d0,a0
- clr.w mmd_pstate(a0)
- clr.l _module8
- SP_nomod bra.w _End8Play
-
- ; *************************************************************************
- ; RemPlayer8() -- free interrupt, audio, serial port etc..
- ; *************************************************************************
- _RemPlayer8: bsr.s _StopPlayer8
- ; vvvvvvvvvvvvvvvv to _AudioRem
- ; *************************************************************************
- _AudioRem: movem.l a5-a6,-(sp)
- lea DB,a5
- bsr.w _Rem8chan
- IFNE AUDDEV
- movea.l 4,a6
- tst.b audiodevopen-DB(a5)
- beq.s rem2
- clr.b audiodevopen-DB(a5)
- move.w #$000f,$dff096 ;stop audio DMA
- ; +=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+ close audio.device
- lea allocreq-DB(a5),a1
- jsr -$1c2(a6) ;CloseDevice()
- rem2: moveq #0,d0
- move.b sigbitnum-DB(a5),d0
- bmi.s rem3
- ; +=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+ free signal bit
- jsr -$150(a6) ;FreeSignal()
- st sigbitnum-DB(a5)
- ENDC
- rem3: movem.l (sp)+,a5-a6
- rts
-
- _AudioInit: movem.l a4/a6/d2-d3,-(sp)
- lea DB,a4
- movea.l 4.w,a6
- IFNE AUDDEV
- moveq #0,d2
- ; +=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+ alloc signal bit
- moveq #1,d2
- moveq #-1,d0
- jsr -$14a(a6) ;AllocSignal()
- tst.b d0
- bmi.w 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
- moveq #2,d2
- lea allocreq-DB(a4),a1
- lea audiodevname-DB(a4),a0
- moveq #0,d0
- moveq #0,d1
- jsr -$1bc(a6) ;OpenDevice()
- tst.b d0
- bne.w initerr
- st.b audiodevopen-DB(a4)
- ENDC
- move.w #1<<7,$dff09a ;Init 8 channel stuff
- moveq #7,d0 ;Audio channel 0 interrupt
- lea audiointerrupt-DB(a4),a1
- jsr -$a2(a6) ;SetIntVector()
- move.l d0,prevaud-DB(a4)
- st eightrkon-DB(a4)
- moveq #0,d0
- initret: movem.l (sp)+,a4/a6/d2-d3
- rts
- initerr: move.l d2,d0
- bra.s initret
-
- DATA
- XDEF _hq
- DB: ;Data base pointer
- IFNE AUDDEV
- sigbitnum dc.b -1
- audiodevopen dc.b 0
- allocm dc.b $F,0
- ENDC
- chdmamask dc.w 0
- trksplit dc.b 0,0,0,0
- even
- 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 allocm ;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
- ENDC
- even
-
- zerodata dc.w 0
- whichbuff dc.w 0
-
- track0hw dc.l 0,0,tmpvol,0,0
- dc.w $0001,$df,$f0a0
- track1hw dc.l 0,0,tmpvol+1,0,0
- dc.w $0002,$df,$f0b0
- track2hw dc.l 0,0,tmpvol+2,0,0
- dc.w $0004,$df,$f0c0
- track3hw dc.l 0,0,tmpvol+3,0,0
- dc.w $0008,$df,$f0d0
- track4hw dc.l 0,0,tmpvol,0,0
- dc.w 0,0,0
- track5hw dc.l 0,0,tmpvol+1,0,0
- dc.w 0,0,0
- track6hw dc.l 0,0,tmpvol+2,0,0
- dc.w 0,0,0
- track7hw dc.l 0,0,tmpvol+3,0,0
- dc.w 0,0,0
- SIZE4TRKHW equ 4*$1A
-
- tmpvol dc.b 0,0,0,0
-
- audintname dc.b 'OctaMED AudioInterrupt',0
- even
- audiointerrupt dc.w 0,0,0,0,0
- dc.l audintname,_audiobuff,_IntHandler8
- prevaud dc.l 0
- play8 dc.b 0
- eightrkon dc.b 0
-
- t038: ds.b 18
- dc.l track0hw
- ds.b 52-(18+4+1)
- dc.b $ff
- ds.b 18
- dc.l track1hw
- ds.b 52-(18+4+1)
- dc.b $ff
- ds.b 18
- t238 dc.l track2hw
- ds.b 52-(18+4+1)
- dc.b $ff
- ds.b 18
- dc.l track3hw
- ds.b 52-(18+4+1)
- dc.b $ff
- t4158 ds.b 18
- dc.l track4hw
- ds.b 52-(18+4+1)
- dc.b $ff
- ds.b 18
- dc.l track5hw
- ds.b 52-(18+4+1)
- dc.b $ff
- ds.b 18
- t6158 dc.l track6hw
- ds.b 52-(18+4+1)
- dc.b $ff
- ds.b 18
- dc.l track7hw
- ds.b 52-(18+4+1)
- dc.b $ff
-
- trackdata8 dc.l t038,t038+TDSZ,t038+2*TDSZ,t038+3*TDSZ
- dc.l t4158,t4158+TDSZ,t4158+2*TDSZ,t4158+3*TDSZ
-
- blkdelay dc.w 0 ;block delay (PT PatternDelay)
-
- eightchsizes dc.b 110,120,130,140,150,160,170,180,190,200
- dc.b 101,110,119,128,137,146,156,165,174,183 ;HQ sizes
- currchsize dc.w 0 ;<< 3
- currchsize2 dc.w 0
- currchszcnt dc.w 0
-
- nextblock dc.b 0 ;\ DON'T SEPARATE
- nxtnoclrln dc.b 0 :/
- numtracks dc.w 0
- numlines dc.w 0
- numpages dc.w 0
- nextblockline dc.w 0
- rptline dc.w 0
- rptcounter dc.w 0
- _module8 dc.l 0
- fxplineblk dc.l 0
- _hq dc.b 1
-
- EVEN
- holdvals ds.b 63
- finetunes ds.b 63
- flags ds.b 63
- EVEN
-
- IFNE IFFMOCT
- dc.w 3424,3232,3048,2880,2712,2560,2416,2280,2152,2032,1920,1812
- dc.w 1712,1616,1524,1440,1356,1280,1208,1140,1076,1016,960,906
- ENDC
- per0 dc.w 856,808,762,720,678,640,604,570,538,508,480,453
- dc.w 428,404,381,360,339,320,302,285,269,254,240,226
- dc.w 214,202,190,180,170,160,151,143,135,127,120,113
- dc.w 214,202,190,180,170,160,151,143,135,127,120,113
- dc.w 214,202,190,180,170,160,151,143,135,127,120,113
- dc.w 214,202,190,180,170,160,151,143,135,127,120,113
- IFNE IFFMOCT
- dc.w 3400,3209,3029,2859,2699,2547,2404,2269,2142,2022,1908,1801
- dc.w 1700,1605,1515,1430,1349,1274,1202,1135,1071,1011,954,901
- ENDC
- per1 dc.w 850,802,757,715,674,637,601,567,535,505,477,450
- dc.w 425,401,379,357,337,318,300,284,268,253,239,225
- dc.w 213,201,189,179,169,159,150,142,134,126,119,113
- dc.w 213,201,189,179,169,159,150,142,134,126,119,113
- dc.w 213,201,189,179,169,159,150,142,134,126,119,113
- dc.w 213,201,189,179,169,159,150,142,134,126,119,113
- IFNE IFFMOCT
- dc.w 3376,3187,3008,2839,2680,2529,2387,2253,2127,2007,1895,1788
- dc.w 1688,1593,1504,1419,1340,1265,1194,1127,1063,1004,947,894
- ENDC
- per2 dc.w 844,796,752,709,670,632,597,563,532,502,474,447
- dc.w 422,398,376,355,335,316,298,282,266,251,237,224
- dc.w 211,199,188,177,167,158,149,141,133,125,118,112
- dc.w 211,199,188,177,167,158,149,141,133,125,118,112
- dc.w 211,199,188,177,167,158,149,141,133,125,118,112
- dc.w 211,199,188,177,167,158,149,141,133,125,118,112
- IFNE IFFMOCT
- dc.w 3352,3164,2986,2819,2660,2511,2370,2237,2112,1993,1881,1776
- dc.w 1676,1582,1493,1409,1330,1256,1185,1119,1056,997,941,888
- ENDC
- per3 dc.w 838,791,746,704,665,628,592,559,528,498,470,444
- dc.w 419,395,373,352,332,314,296,280,264,249,235,222
- dc.w 209,198,187,176,166,157,148,140,132,125,118,111
- dc.w 209,198,187,176,166,157,148,140,132,125,118,111
- dc.w 209,198,187,176,166,157,148,140,132,125,118,111
- dc.w 209,198,187,176,166,157,148,140,132,125,118,111
- IFNE IFFMOCT
- dc.w 3328,3141,2965,2799,2641,2493,2353,2221,2097,1979,1868,1763
- dc.w 1664,1571,1482,1399,1321,1247,1177,1111,1048,989,934,881
- ENDC
- per4 dc.w 832,785,741,699,660,623,588,555,524,495,467,441
- dc.w 416,392,370,350,330,312,294,278,262,247,233,220
- dc.w 208,196,185,175,165,156,147,139,131,124,117,110
- dc.w 208,196,185,175,165,156,147,139,131,124,117,110
- dc.w 208,196,185,175,165,156,147,139,131,124,117,110
- dc.w 208,196,185,175,165,156,147,139,131,124,117,110
- IFNE IFFMOCT
- dc.w 3304,3119,2944,2778,2622,2475,2336,2205,2081,1965,1854,1750
- dc.w 1652,1559,1472,1389,1311,1238,1168,1103,1041,982,927,875
- ENDC
- per5 dc.w 826,779,736,694,655,619,584,551,520,491,463,437
- dc.w 413,390,368,347,328,309,292,276,260,245,232,219
- dc.w 206,195,184,174,164,155,146,138,130,123,116,109
- dc.w 206,195,184,174,164,155,146,138,130,123,116,109
- dc.w 206,195,184,174,164,155,146,138,130,123,116,109
- dc.w 206,195,184,174,164,155,146,138,130,123,116,109
- IFNE IFFMOCT
- dc.w 3280,3096,2922,2758,2603,2457,2319,2189,2066,1950,1841,1738
- dc.w 1640,1548,1461,1379,1302,1229,1160,1095,1033,975,920,869
- ENDC
- per6 dc.w 820,774,730,689,651,614,580,547,516,487,460,434
- dc.w 410,387,365,345,325,307,290,274,258,244,230,217
- dc.w 205,193,183,172,163,154,145,137,129,122,115,109
- dc.w 205,193,183,172,163,154,145,137,129,122,115,109
- dc.w 205,193,183,172,163,154,145,137,129,122,115,109
- dc.w 205,193,183,172,163,154,145,137,129,122,115,109
- IFNE IFFMOCT
- dc.w 3256,3073,2901,2738,2584,2439,2302,2173,2051,1936,1827,1725
- dc.w 1628,1537,1450,1369,1292,1220,1151,1087,1026,968,914,862
- ENDC
- per7 dc.w 814,768,725,684,646,610,575,543,513,484,457,431
- dc.w 407,384,363,342,323,305,288,272,256,242,228,216
- dc.w 204,192,181,171,161,152,144,136,128,121,114,108
- dc.w 204,192,181,171,161,152,144,136,128,121,114,108
- dc.w 204,192,181,171,161,152,144,136,128,121,114,108
- dc.w 204,192,181,171,161,152,144,136,128,121,114,108
- IFNE IFFMOCT
- dc.w 3628,3424,3232,3051,2880,2718,2565,2421,2285,2157,2036,1922
- dc.w 1814,1712,1616,1525,1440,1359,1283,1211,1143,1079,1018,961
- ENDC
- per_8 dc.w 907,856,808,762,720,678,640,604,570,538,508,480
- dc.w 453,428,404,381,360,339,320,302,285,269,254,240
- dc.w 226,214,202,190,180,170,160,151,143,135,127,120
- dc.w 226,214,202,190,180,170,160,151,143,135,127,120
- dc.w 226,214,202,190,180,170,160,151,143,135,127,120
- dc.w 226,214,202,190,180,170,160,151,143,135,127,120
- IFNE IFFMOCT
- dc.w 3588,3387,3197,3017,2848,2688,2537,2395,2260,2133,2014,1901
- dc.w 1794,1693,1598,1509,1424,1344,1269,1197,1130,1067,1007,950
- ENDC
- per_7 dc.w 900,850,802,757,715,675,636,601,567,535,505,477
- dc.w 450,425,401,379,357,337,318,300,284,268,253,238
- dc.w 225,212,200,189,179,169,159,150,142,134,126,119
- dc.w 225,212,200,189,179,169,159,150,142,134,126,119
- dc.w 225,212,200,189,179,169,159,150,142,134,126,119
- dc.w 225,212,200,189,179,169,159,150,142,134,126,119
- IFNE IFFMOCT
- dc.w 3576,3375,3186,3007,2838,2679,2529,2387,2253,2126,2007,1894
- dc.w 1788,1688,1593,1504,1419,1339,1264,1193,1126,1063,1003,947
- ENDC
- per_6 dc.w 894,844,796,752,709,670,632,597,563,532,502,474
- dc.w 447,422,398,376,355,335,316,298,282,266,251,237
- dc.w 223,211,199,188,177,167,158,149,141,133,125,118
- dc.w 223,211,199,188,177,167,158,149,141,133,125,118
- dc.w 223,211,199,188,177,167,158,149,141,133,125,118
- dc.w 223,211,199,188,177,167,158,149,141,133,125,118
- IFNE IFFMOCT
- dc.w 3548,3349,3161,2984,2816,2658,2509,2368,2235,2110,1991,1879
- dc.w 1774,1674,1580,1492,1408,1329,1254,1184,1118,1055,996,940
- ENDC
- per_5 dc.w 887,838,791,746,704,665,628,592,559,528,498,470
- dc.w 444,419,395,373,352,332,314,296,280,264,249,235
- dc.w 222,209,198,187,176,166,157,148,140,132,125,118
- dc.w 222,209,198,187,176,166,157,148,140,132,125,118
- dc.w 222,209,198,187,176,166,157,148,140,132,125,118
- dc.w 222,209,198,187,176,166,157,148,140,132,125,118
- IFNE IFFMOCT
- dc.w 3524,3326,3140,2963,2797,2640,2492,2352,2220,2095,1978,1867
- dc.w 1762,1663,1570,1482,1399,1320,1246,1176,1110,1048,989,933
- ENDC
- per_4 dc.w 881,832,785,741,699,660,623,588,555,524,494,467
- dc.w 441,416,392,370,350,330,312,294,278,262,247,233
- dc.w 220,208,196,185,175,165,156,147,139,131,123,117
- dc.w 220,208,196,185,175,165,156,147,139,131,123,117
- dc.w 220,208,196,185,175,165,156,147,139,131,123,117
- dc.w 220,208,196,185,175,165,156,147,139,131,123,117
- IFNE IFFMOCT
- dc.w 3500,3304,3118,2943,2778,2622,2475,2336,2205,2081,1964,1854
- dc.w 1750,1652,1559,1472,1389,1311,1237,1168,1102,1041,982,927
- ENDC
- per_3 dc.w 875,826,779,736,694,655,619,584,551,520,491,463
- dc.w 437,413,390,368,347,328,309,292,276,260,245,232
- dc.w 219,206,195,184,174,164,155,146,138,130,123,116
- dc.w 219,206,195,184,174,164,155,146,138,130,123,116
- dc.w 219,206,195,184,174,164,155,146,138,130,123,116
- dc.w 219,206,195,184,174,164,155,146,138,130,123,116
- IFNE IFFMOCT
- dc.w 3472,3277,3093,2920,2756,2601,2455,2317,2187,2064,1949,1839
- dc.w 1736,1639,1547,1460,1378,1301,1228,1159,1094,1032,974,920
- ENDC
- per_2 dc.w 868,820,774,730,689,651,614,580,547,516,487,460
- dc.w 434,410,387,365,345,325,307,290,274,258,244,230
- dc.w 217,205,193,183,172,163,154,145,137,129,122,115
- dc.w 217,205,193,183,172,163,154,145,137,129,122,115
- dc.w 217,205,193,183,172,163,154,145,137,129,122,115
- dc.w 217,205,193,183,172,163,154,145,137,129,122,115
- IFNE IFFMOCT
- dc.w 3448,3254,3072,2899,2737,2583,2438,2301,2172,2050,1935,1827
- dc.w 1724,1627,1536,1450,1368,1292,1219,1151,1086,1025,968,913
- ENDC
- per_1 dc.w 862,814,768,725,684,646,610,575,543,513,484,457
- dc.w 431,407,384,363,342,323,305,288,272,256,242,228
- dc.w 216,203,192,181,171,161,152,144,136,128,121,114
- dc.w 216,203,192,181,171,161,152,144,136,128,121,114
- dc.w 216,203,192,181,171,161,152,144,136,128,121,114
- dc.w 216,203,192,181,171,161,152,144,136,128,121,114
-
- _periodtable
- dc.l per_8,per_7,per_6,per_5,per_4,per_3,per_2,per_1,per0
- dc.l per1,per2,per3,per4,per5,per6,per7
-
- IFND __G2
- section "datachip",bss,chip ;for A68k
- ENDC
- IFD __G2
- section "datachip",bss_c ;this is for Devpac 2
- ENDC
-
- XDEF _modnum8
- _audiobuff: ds.w 400*8
- _modnum8: ds.w 1
- _chipzero: ds.w 1
-
- ; macros for entering offsets
- DEFWORD MACRO
- \1 EQU OFFS
- OFFS SET OFFS+2
- ENDM
- DEFBYTE MACRO
- \1 EQU OFFS
- OFFS SET OFFS+1
- ENDM
- DEFLONG MACRO
- \1 EQU OFFS
- OFFS SET OFFS+4
- ENDM
-
- OFFS SET 0
- ; the track-data structure definition:
- DEFBYTE trk_prevnote ;previous note number (0 = none, 1 = C-1..)
- DEFBYTE trk_previnstr ;previous instrument number
- DEFBYTE trk_prevvol ;previous volume
- DEFBYTE trk_noteoffcnt ;note-off counter (hold)
- DEFBYTE trk_inithold ;default hold for this instrument
- DEFBYTE trk_stransp ;instrument transpose
- DEFWORD trk_soffset ;new sample offset | don't sep this and 2 below!
- DEFBYTE trk_finetune ;finetune
- DEFBYTE trk_miscflags ;bit: 7 = cmd 3 exists, 0 = cmd E exists
- DEFBYTE trk_currnote ;note on CURRENT line (0 = none, 1 = C-1...)
- DEFBYTE trk_fxtype ;fx type: 0 = norm, 1 = none, -1 = MIDI
- DEFLONG trk_previnstra ;address of the previous instrument data
- DEFWORD trk_prevper ;previous period
- DEFLONG trk_audioaddr ;hardware audio channel base address
- DEFLONG trk_sampleptr ;pointer to sample
- DEFWORD trk_samplelen ;length (>> 1)
- DEFWORD trk_porttrgper ;portamento (cmd 3) target period
- DEFBYTE trk_vibshift ;vibrato shift for ASR instruction
- DEFBYTE trk_vibrspd ;vibrato speed/size (cmd 4 qualifier)
- DEFWORD trk_vibrsz ;vibrato size
- DEFLONG trk_periodtbl ;pointer to period table
- DEFWORD trk_prevportspd ;portamento (cmd 3) speed
- DEFBYTE trk_split ;0 = this channel not splitted (OctaMED V2)
- DEFBYTE trk_vibroffs ;vibrato table offset \ DON'T SEPARATE
- DEFBYTE trk_tremoffs ;tremolo table offset /
- DEFBYTE trk_tremspd ;tremolo speed
- DEFWORD trk_tremsz ;tremolo size
- DEFWORD trk_vibradjust ;vibrato +/- change from base period \ DON'T SEPARATE
- DEFWORD trk_arpadjust ;arpeggio +/- change from base period/
- DEFBYTE trk_tempvol ;temporary volume (for tremolo)
- DEFBYTE pad
-
- END