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17 Bit Software 1: Collection A
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17Bit_Collection_A.iso
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1199.dms
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1199.adf
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pd30.s
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1991-06-07
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19KB
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986 lines
;REQUESTER TEST
execbase =4
openlib =-408
closelib =-414
dmacon =$96
cop1lc =$80
copjmp1 =$88
openlibrary =-30-552
forbid =-30-102
permit =-30-108
open =-30
read =-42
close =-36
mode_old =1005
startlist =38
custom =$dff000
bplcon0 =$100
bplcon1 =$102
bplcon2 =$104
bpl1pth =$0e0
bpl1mod =$108
bpl2mod =$10a
diwstrt =$08e
diwstop =$090
ddfstrt =$092
ddfstop =$094
color00 =$180
color01 =$182
color17 =$1a2
color18 =$1a4
color19 =$1a6
vhposr =$006
opendos:
move.l execbase,a6 ;open the dos library
lea dosname(pc),a1 ;name of library
moveq #0,d0 ;existing file
jsr openlib(a6) ;open library
move.l d0,dosbase ;store base address
openint: ;open intuition library
lea intname(pc),a1 ;name of library
moveq #0,d0 ;existing file
jsr openlib(a6) ;open it
move.l d0,intbase ;store base address
taskoff:
jsr forbid(a6) ;muti-tasking off
copbuild: ;make bitplane copperlist
move.l #bitmap,d2 ;bit plane address no 1
moveq #1,d4 ;2 planes=2 loops to run
move.l cladr,a0 ;copper list address in a0
move.l d2,d1 ;1st bit plane address in d1
move.w #bpl1pth,d3 ;first register to d3
makecl:
move.w d3,(a0)+ ;bplxpth ins ram
addq.w #2,d3 ;next register
swap d1
move.w d1,(a0)+ ;hi word of plane address
move.w d3,(a0)+ ;bplxptl ins ram
addq.w #2,d3 ;next register
swap d1
move.w d1,(a0)+ ;lo word of plane address
add.l #10240,d1 ;plane size for next address
dbf d4,makecl ;continue untill end
bsr cop0build ;display etc
jmp joy2 ;go and check firbutton etc
cop0build:
lea sprtno,a1 ;make sprite0 copperlist
move.l (a1),d1 ;sprite0 address
moveq #0,d4 ;0=1 sprites -1 loop to run
move.l cladr0,a0 ;copper list address in a0
move.w #$120,d3 ;high byte to d3
bsr.s makecl0
add.l #168,(a1)
move.l (a1),d1
moveq #0,d4
bsr.s makecl0
add.l #168,(a1)
move.l (a1),d1
moveq #0,d4
bsr.s makecl0
add.l #168,(a1)
move.l (a1),d1
moveq #0,d4
bsr.s makecl0
move.l #sprite47,d1
moveq #3,d4
bsr.s makecl0
bra.s copset
makecl0:
move.w d3,(a0)+ ;spr0pth stored in ram
addq.w #2,d3 ;next register
swap d1
move.w d1,(a0)+ ;high word of address
move.w d3,(a0)+ ;spr0ptl stored in ram
addq.w #2,d3 ;next register
swap d1
move.w d1,(a0)+ ;lo word of address
dbf d4,makecl0 ;continue till all done
rts ;return done
copset: ;initialise copper list
lea custom,a5 ;register base address
move.l cladr,cop1lc(a5) ;address of copper list
move.w #$2981,diwstrt(a5) ;upper left of screen
move.w #$29c1,diwstop(a5) ;lower right of screen
;ddfs's set for low res
move.w #$0038,ddfstrt(a5) ;start of bit plane dma
move.w #$00d0,ddfstop(a5) ;end of bit plane dma
;0010 (10)=2 bit planes
move.w #%0010001000000000,bplcon0(a5) ;no of planes (2)
clr.w bplcon1(a5) ;no scrolling ?
clr.w bplcon2(a5) ;priority makes no diffrence
clr.w bpl1mod(a5) ;modulo for all planes=null?
clr.w bpl2mod(a5) ;same
clr.w copjmp1(a5) ;load copper list to pc
rts ;end of display
enda:
move.l #grname,a1 ;set for open library
clr.l d0 ;existing file
jsr openlib(a6) ;open graphics library
move.l d0,a4 ;address of graphics base
move.l d0,grbase ;store base address
move.l startlist(a4),cop1lc(a5) ;old copperlist
clr.w copjmp1(a5) ;load into pc
move.w #$83e0,dmacon(a5) ;all dma on
jsr permit(a6) ;enable muti-tasking
endb:
move.l execbase,a6
move.l dosbase(pc),a1 ;close dos.library
jsr closelib(a6)
move.l intbase(pc),a1 ;close intuition library
jsr closelib(a6)
move.l grbase(pc),a1 ;close graphics library
jsr closelib(a6)
rts ;all done finished
dosname:
dc.b 'dos.library',0,0
even
dosbase:
blk.l 1,0
intname:
dc.b "intuition.library",0
even
intbase:
blk.l 1,0
grname:
dc.b "graphics.library",0
even
grbase:
blk.l 1,0
cladr:
dc.l list
cladr0:
dc.l list0
list:
blk.l 4,0 ;BITPLANE COPPER LIST (2*2planes=4)
list0:
blk.l 16,0 ;SPRITE COPPER LIST (2*8sprites=16 lwords)
list2:
;COLOR MAP COPPER LIST
dc.w $0180,$0000,$0182,$0555,$0184,$0E52,$0186,$0AAA
dc.w $0188,$0455,$018A,$0500,$018C,$0060,$018E,$0000
dc.w $0190,$0000,$0192,$0000,$0194,$0000,$0196,$0006
dc.w $0198,$0000,$019A,$0400,$019C,$0000,$019E,$0500
dc.w $01A0,$0000,$01A2,$0f00,$01A4,$0fff,$01A6,$00bf
dc.w $01A8,$0000,$01AA,$0f00,$01AC,$0fff,$01AE,$00bf
dc.w $01B0,$0000,$01B2,$0000,$01B4,$0000,$01B6,$0000
dc.w $01B8,$0000,$01BA,$0000,$01BC,$0000,$01BE,$0000
dc.w $ffff,$fffe
bitmap:
blk.b 20480,0 ;BIT PLANE INFORMATION (2 planes)
even
sprtno:
dc.l sprites
sprites:
blk.b 15456,0 ;sprites A to 20 info
even
sprites1:
blk.b 3360,0 ;sprites 21 to 25 info
even
sprites2:
blk.b 5376,0 ;sprites a to g eqalizer
even
sprite47:
blk.l 42,0 ;4-7 dummy sprite info
even
store:
dc.l sprites
count:
blk.l 1,0
joy2:
btst #6,$bfe001
beq.L out
delay:
move.l #12000,d1
loop1:
sub.l #1,d1
cmp.l #0,d1
bne.s loop1
checkcount:
lea store,a0
move.l (a0),a0
move.l a0,sprtno
add.l #672,a0
move.l a0,store
move.l count,d0
at1: cmp.l #22,d0
beq.s cntup
add.l #1,count
cmp.l #3,d0 ;intro sprite?
bgt.s rebeam ;no so display next
move.l #300000,d1 ;intro frame
loop2: ;delay next frame
sub.l #1,d1 ;decrement count
cmp.l #0,d1 ;end of delay?
bne.s loop2 ;nope then next decrement
cmp.l #3,d0 ;is this the 3rd screen
beq.s setmus ;yes go and run music
rebeam:
bsr.s beamcheck ;check beam postion
jsr cop0build ;go and display sprite
bra.s joy2 ;re-check fire button
beamcheck:
lea custom,a1 ;check the beam position
move.b vhposr(a1),d6 ;
cmp.b #$24,d6 ;on last line ?
bne.s beamcheck ;nope then re-check
rts ;return
cntup: ;top sprite reached
move.l #4,count ;reset counter
move.l #23,at1+2
lea sprites+2016,a0 ;set sprite pointer to start
move.l a0,store ;store for future recall
bra.s rebeam ;go and display next jobby
out:
bsr.L stopmus ;end this part/stop mus
bsr.s scr3set ;transfer new music etc
bra.s changecol ;goto next section
setmus:
bsr.L gomus ;go and set up music
bra.s rebeam ;return to check beam pos
scr3set:
lea mt_data1,a0 ;copy new music to data
move.l mtpoint,a1 ;pointer to go to
move.l #61004,d0 ;number of bytes to copy
copy:
move.b (a0)+,(a1)+
dbf d0,copy
rts
changecol:
bsr.s beamcheck ;check beam position
move.w #$0f90,list2+70 ;set up copper colors
move.w #$01f0,list2+74 ;for new screen
move.w #$0f90,list2+86
move.w #$01f0,list2+90
bsr.L gomus ;restart music
screen3:
lea sprites1,a0 ;set sprites pointer
move.l a0,store ;pointer in store
move.l #0,count ;reset counter to zero
move.l #0,newdo
nextspr:
lea store,a0 ;get stored pointer
move.l (a0),a0 ;from store
move.l a0,sprtno ;save to pointer
move.l count,d0 ;get counter
cmp.l newdo,d0 ;is new reqd same?
beq.s update ;yes so display same
add.l #672,a0 ;setup next sprite
move.l a0,store ;save for next display run
add.l #1,count ;increment counter
cmp.l #5,count ;check counter number
beq.s screen3 ;reset if > last sprite
update:
bsr.L beamcheck ;check beam position
jsr cop0build ;display sprite
next1:
bsr.L beamcheck ;check beam position
move.l #8000,d1 ;load delay to check
next2:
sub.l #1,d1 ;count down delay
bne.s next2 ;not finished yet
next3:
btst #6,$bfe001 ;left button?
beq.s addspr ;yes so update sprite
btst #10,$dff016 ;right button?
beq.s options ;yes so goto options
bra.s nextspr ;no buttons so re-display
addspr:
cmp.l #0,olddo ;check button delay=0?
beq.s incdo ;yes so new press
sub.l #1,olddo ;no so dec counter
cmp.l #0,olddo ;is counter at zero?
bne.L nextspr ;no so display as is
add.l #1,newdo ;yes so update display
bra.L nextspr ;and display new sprite
incdo:
add.l #2,olddo ;set button delay
bra.L nextspr ;and display old jobbie
options:
move.l count,d0 ;check which sprite display
cmp.l #0,d0 ;up when right button
beq.s music0 ;was hit?
cmp.l #1,d0 ;and select music
beq.s music1 ;accordingly
cmp.l #2,d0
beq.s music2
cmp.l #3,d0
beq.s music3
cmp.l #4,d0 ;check quit displayed
beq.s quit ;yes so quit
bra.L nextspr ;no selection re-display
quit:
bsr.L stopmus
jmp enda
olddo:
blk.l 1,0
newdo:
blk.l 1,0
filehd:
blk.l 1,0
mus0:
dc.b "music0",0
even
mus1:
dc.b "music1",0
even
mus2:
dc.b "music2",0
even
mus3:
dc.b "music3",0
even
music0:
move.l #mus0,d1
bra.s loader
music1:
move.l #mus1,d1
bra.s loader
music2:
move.l #mus2,d1
bra.s loader
music3:
move.l #mus3,d1
bra.s loader
loader:
move.l #mode_old,d2 ;load data from disk
move.l dosbase,a6 ;filename in d1
jsr open(a6)
move.l d0,filehd
move.l #$ffffff,d3 ;size of file
move.l #mt_data1,d2 ;destination address
move.l dosbase,a6
move.l filehd(pc),d1
jsr read(a6)
move.l d0,d6
move.l dosbase,a6
move.l filehd(pc),d1
jsr close(a6)
bsr.L stopmus ;stop soundtrack
bsr.L scr3set ;copy new music to buffer
bsr.L gomus ;restart soundtrack
bra.s graphic ;next screen
ec1: ;graphic eqalizer counters
blk.l 1,0 ;holds time value
ec2: ;higher the newer
blk.l 1,0
ec3:
blk.l 1,0
ec4:
blk.l 1,0
graphic:
bsr beamcheck
move.w #$0f00,list2+70
move.w #$0ff0,list2+74
move.w #$00f0,list2+78
move.w #$0f00,list2+86
move.w #$0ff0,list2+90
move.w #$00f0,list2+94
bsr.L cop1info
graphica:
move.l #8000,d0
loop3:
sub.l #1,d0
cmp.l #0,d0
bne.s loop3
btst #6,$bfe001
beq.s back
lea ec1,a1
bsr.s deceqalizer
lea ec2,a1
bsr.s deceqalizer
lea ec3,a1
bsr.s deceqalizer
lea ec4,a1
bsr.s deceqalizer
bsr.s cop1info
bra.s graphica
back:
bsr beamcheck
move.w #$0f90,list2+70
move.w #$01f0,list2+74
move.w #$00bf,list2+78
move.w #$0f90,list2+86
move.w #$01f0,list2+90
move.w #$00bf,list2+94
bra nextspr
deceqalizer:
move.l (a1),d0
cmp.l #0,d0
beq.s nodec
sub.l #1,d0
move.l d0,(a1)
nodec:
rts
cop1info:
jsr beamcheck
move.l cladr0,a0
move.w #$120,d3
lea sprites2,a1 ;base sprite info value
lea ec1,a2 ;get display value
bsr.s cop1build ;make that copper
lea sprites2+168,a1
lea ec2,a2
bsr.s cop1build
lea sprites2+336,a1
lea ec3,a2
bsr.s cop1build
lea sprites2+504,a1
lea ec4,a2
bsr.s cop1build
move.l #sprite47,d1
moveq #3,d4
jsr makecl0
jmp copset
cop1build:
move.l (a2),d0 ;value in display
mulu #672,d0 ;multiply by next block
add.l d0,a1 ;add to base value
move.l a1,d1 ;transfer
moveq #0,d4 ;number of runs = 0
jsr makecl0 ;go to it !
rts
;NOISETRACKER INTERUPT PLAY ROUTINE
;A.R. NELSON 1990
mtpoint:
dc.l mt_data
gomus:
bsr mt_init ;set up music etc
lea inter(pc),a1
moveq #5,d0
move.l 4,a6
jsr -168(a6)
rts ;music up and running
stopmus:
move.l 4,a6 ;stop music etc
moveq #32,d0
lea inter(pc),a1
jsr -174(a6)
move.w #$f,$dff096
clr.l d0
rts ;music stopped return
mt_init:lea mt_data(pc),a0
move.l a0,a1
add.l #$3b8,a1
moveq #$7f,d0
moveq #0,d1
mt_loop:move.l d1,d2
subq.w #1,d0
mt_lop2:move.b (a1)+,d1
cmp.b d2,d1
bgt.s mt_loop
dbf d0,mt_lop2
addq.b #1,d2
lea mt_samplestarts(pc),a1
asl.l #8,d2
asl.l #2,d2
add.l #$43c,d2
add.l a0,d2
move.l d2,a2
moveq #$1e,d0
mt_lop3:clr.l (a2)
move.l a2,(a1)+
moveq #0,d1
move.w 42(a0),d1
asl.l #1,d1
add.l d1,a2
add.l #$1e,a0
dbf d0,mt_lop3
or.b #$2,$bfe001
move.b #$6,mt_speed
clr.w $dff0a8
clr.w $dff0b8
clr.w $dff0c8
clr.w $dff0d8
clr.b mt_songpos
clr.b mt_counter
clr.w mt_pattpos
rts
mt_end: clr.w $dff0a8
clr.w $dff0b8
clr.w $dff0c8
clr.w $dff0d8
move.w #$f,$dff096
rts
spadgewirq:
movem.l d0-d7/a0-a6,-(a7)
bsr mt_music
movem.l (a7)+,d0-d7/a0-a6
moveq #0,d0
rts
mt_music:
movem.l d0-d4/a0-a3/a5-a6,-(a7)
lea mt_data(pc),a0
addq.b #$1,mt_counter
move.b mt_counter,D0
cmp.b mt_speed,D0
blt.s mt_nonew
clr.b mt_counter
bra.L mt_getnew
mt_nonew:
lea mt_voice1(pc),a6
lea $dff0a0,a5
bsr.L mt_checkcom
lea mt_voice2(pc),a6
lea $dff0b0,a5
bsr.L mt_checkcom
lea mt_voice3(pc),a6
lea $dff0c0,a5
bsr.L mt_checkcom
lea mt_voice4(pc),a6
lea $dff0d0,a5
bsr.L mt_checkcom
bra.L mt_endr
mt_arpeggio:
moveq #0,d0
move.b mt_counter,d0
divs #$3,d0
swap d0
cmp.w #$0,d0
beq.s mt_arp2
cmp.w #$2,d0
beq.s mt_arp1
moveq #0,d0
move.b $3(a6),d0
lsr.b #4,d0
bra.s mt_arp3
mt_arp1:moveq #0,d0
move.b $3(a6),d0
and.b #$f,d0
bra.s mt_arp3
mt_arp2:move.w $10(a6),d2
bra.s mt_arp4
mt_arp3:asl.w #1,d0
moveq #0,d1
move.w $10(a6),d1
lea mt_periods(pc),a0
moveq #$24,d7
mt_arploop:
move.w (a0,d0.w),d2
cmp.w (a0),d1
bge.s mt_arp4
addq.l #2,a0
dbf d7,mt_arploop
rts
mt_arp4:move.w d2,$6(a5)
rts
mt_getnew:
lea mt_data(pc),a0
move.l a0,a3
move.l a0,a2
add.l #$c,a3
add.l #$3b8,a2
add.l #$43c,a0
moveq #0,d0
move.l d0,d1
move.b mt_songpos,d0
move.b (a2,d0.w),d1
asl.l #8,d1
asl.l #2,d1
add.w mt_pattpos,d1
clr.w mt_dmacon
lea $dff0a0,a5
lea mt_voice1(pc),a6
bsr.s mt_playvoice
lea $dff0b0,a5
lea mt_voice2(pc),a6
bsr.s mt_playvoice
lea $dff0c0,a5
lea mt_voice3(pc),a6
bsr.s mt_playvoice
lea $dff0d0,a5
lea mt_voice4(pc),a6
bsr.s mt_playvoice
bra.L mt_setdma
mt_playvoice:
move.l (a0,d1.l),(a6)
addq.l #4,d1
moveq #0,d2
move.b $2(a6),d2
and.b #$f0,d2
lsr.b #4,d2
move.b (a6),d0
and.b #$f0,d0
or.b d0,d2
tst.b d2
beq.s mt_setregs
moveq #0,d3
lea mt_samplestarts(pc),a1
move.l d2,d4
subq.l #$1,d2
asl.l #2,d2
mulu #$1e,d4
move.l (a1,d2.l),$4(a6)
move.w (a3,d4.l),$8(a6)
move.w $2(a3,d4.l),$12(a6)
move.w $4(a3,d4.l),d3
tst.w d3
beq.s mt_noloop
move.l $4(a6),d2
asl.w #1,d3
add.l d3,d2
move.l d2,$a(a6)
move.w $4(a3,d4.l),d0
add.w $6(a3,d4.l),d0
move.w d0,8(a6)
move.w $6(a3,d4.l),$e(a6)
move.w $12(a6),$8(a5)
bra.s mt_setregs
mt_noloop:
move.l $4(a6),d2
add.l d3,d2
move.l d2,$a(a6)
move.w $6(a3,d4.l),$e(a6)
move.w $12(a6),$8(a5)
mt_setregs:
move.w (a6),d0
and.w #$fff,d0
beq.L mt_checkcom2
move.b $2(a6),d0
and.b #$F,d0
cmp.b #$3,d0
bne.s mt_setperiod
bsr.L mt_setmyport
bra.L mt_checkcom2
mt_setperiod:
chan:
move.l #8,d0
cmp.l #$dff0a0,a5
beq.s chan1
cmp.l #$dff0b0,a5
beq.s chan2
cmp.l #$dff0c0,a5
beq.s chan3
cmp.l #$dff0d0,a5
beq.s chan4
bra.s non
chan1:
move.l d0,ec1
bra.s non
chan2:
move.l d0,ec2
bra.s non
chan3:
move.l d0,ec3
bra.s non
chan4:
move.l d0,ec4
non:
move.w (a6),$10(a6)
and.w #$fff,$10(a6)
move.w $14(a6),d0
move.w d0,$dff096
clr.b $1b(a6)
move.l $4(a6),(a5)
move.w $8(a6),$4(a5)
move.w $10(a6),d0
and.w #$fff,d0
move.w d0,$6(a5)
move.w $14(a6),d0
or.w d0,mt_dmacon
bra.L mt_checkcom2
mt_setdma:
move.w #$12c,d0
mt_wait:dbf d0,mt_wait
move.w mt_dmacon,d0
or.w #$8000,d0
move.w d0,$dff096
move.w #$12c,d0
mt_wai2:dbf d0,mt_wai2
lea $dff000,a5
lea mt_voice4(pc),a6
move.l $a(a6),$d0(a5)
move.w $e(a6),$d4(a5)
lea mt_voice3(pc),a6
move.l $a(a6),$c0(a5)
move.w $e(a6),$c4(a5)
lea mt_voice2(pc),a6
move.l $a(a6),$b0(a5)
move.w $e(a6),$b4(a5)
lea mt_voice1(pc),a6
move.l $a(a6),$a0(a5)
move.w $e(a6),$a4(a5)
add.w #$10,mt_pattpos
cmp.w #$400,mt_pattpos
bne.s mt_endr
mt_nex: clr.w mt_pattpos
clr.b mt_break
addq.b #1,mt_songpos
and.b #$7f,mt_songpos
move.b mt_songpos,d1
cmp.b mt_data+$3b6,d1
bne.s mt_endr
clr.b mt_songpos
mt_endr:tst.b mt_break
bne.s mt_nex
movem.l (a7)+,d0-d4/a0-a3/a5-a6
rts
mt_setmyport:
move.w (a6),d2
and.w #$fff,d2
move.w d2,$18(a6)
move.w $10(a6),d0
clr.b $16(a6)
cmp.w d0,d2
beq.s mt_clrport
bge.s mt_rt
move.b #$1,$16(a6)
rts
mt_clrport:
clr.w $18(a6)
mt_rt: rts
mt_myport:
move.b $3(a6),d0
beq.s mt_myslide
move.b d0,$17(a6)
clr.b $3(a6)
mt_myslide:
tst.w $18(a6)
beq.s mt_rt
moveq #0,d0
move.b $17(a6),d0
tst.b $16(a6)
bne.s mt_mysub
add.w d0,$10(a6)
move.w $18(a6),d0
cmp.w $10(a6),d0
bgt.s mt_myok
move.w $18(a6),$10(a6)
clr.w $18(a6)
mt_myok:move.w $10(a6),$6(a5)
rts
mt_mysub:
sub.w d0,$10(a6)
move.w $18(a6),d0
cmp.w $10(a6),d0
blt.s mt_myok
move.w $18(a6),$10(a6)
clr.w $18(a6)
move.w $10(a6),$6(a5)
rts
mt_vib: move.b $3(a6),d0
beq.s mt_vi
move.b d0,$1a(a6)
mt_vi: move.b $1b(a6),d0
lea mt_sin(pc),a4
lsr.w #$2,d0
and.w #$1f,d0
moveq #0,d2
move.b (a4,d0.w),d2
move.b $1a(a6),d0
and.w #$f,d0
mulu d0,d2
lsr.w #$6,d2
move.w $10(a6),d0
tst.b $1b(a6)
bmi.s mt_vibmin
add.w d2,d0
bra.s mt_vib2
mt_vibmin:
sub.w d2,d0
mt_vib2:move.w d0,$6(a5)
move.b $1a(a6),d0
lsr.w #$2,d0
and.w #$3c,d0
add.b d0,$1b(a6)
rts
mt_nop: move.w $10(a6),$6(a5)
rts
mt_checkcom:
move.w $2(a6),d0
and.w #$fff,d0
beq.s mt_nop
move.b $2(a6),d0
and.b #$f,d0
tst.b d0
beq.L mt_arpeggio
cmp.b #$1,d0
beq.s mt_portup
cmp.b #$2,d0
beq.L mt_portdown
cmp.b #$3,d0
beq.L mt_myport
cmp.b #$4,d0
beq.L mt_vib
move.w $10(a6),$6(a5)
cmp.b #$a,d0
beq.s mt_volslide
rts
mt_volslide:
moveq #0,d0
move.b $3(a6),d0
lsr.b #4,d0
tst.b d0
beq.s mt_voldown
add.w d0,$12(a6)
cmp.w #$40,$12(a6)
bmi.s mt_vol2
move.w #$40,$12(a6)
mt_vol2:move.w $12(a6),$8(a5)
rts
mt_voldown:
moveq #0,d0
move.b $3(a6),d0
and.b #$f,d0
sub.w d0,$12(a6)
bpl.s mt_vol3
clr.w $12(a6)
mt_vol3:move.w $12(a6),$8(a5)
rts
mt_portup:
moveq #0,d0
move.b $3(a6),d0
sub.w d0,$10(a6)
move.w $10(a6),d0
and.w #$fff,d0
cmp.w #$71,d0
bpl.s mt_por2
and.w #$f000,$10(a6)
or.w #$71,$10(a6)
mt_por2:move.w $10(a6),d0
and.w #$fff,d0
move.w d0,$6(a5)
rts
mt_portdown:
clr.w d0
move.b $3(a6),d0
add.w d0,$10(a6)
move.w $10(a6),d0
and.w #$fff,d0
cmp.w #$358,d0
bmi.s mt_por3
and.w #$f000,$10(a6)
or.w #$358,$10(a6)
mt_por3:move.w $10(a6),d0
and.w #$fff,d0
move.w d0,$6(a5)
rts
mt_checkcom2:
move.b $2(a6),d0
and.b #$f,d0
cmp.b #$e,d0
beq.s mt_setfilt
cmp.b #$d,d0
beq.s mt_pattbreak
cmp.b #$b,d0
beq.s mt_posjmp
cmp.b #$c,d0
beq.s mt_setvol
cmp.b #$f,d0
beq.s mt_setspeed
rts
mt_setfilt:
move.b $3(a6),d0
and.b #$1,d0
asl.b #$1,d0
and.b #$fd,$bfe001
or.b d0,$bfe001
rts
mt_pattbreak:
not.b mt_break
rts
mt_posjmp:
move.b $3(a6),d0
subq.b #$1,d0
move.b d0,mt_songpos
not.b mt_break
rts
mt_setvol:
cmp.b #$40,$3(a6)
ble.s mt_vol4
move.b #$40,$3(a6)
mt_vol4:move.b $3(a6),$8(a5)
rts
mt_setspeed:
move.b $3(a6),d0
and.w #$1f,d0
beq.s mt_rts2
clr.b mt_counter
move.b d0,mt_speed
mt_rts2:rts
mt_sin:
dc.b $00,$18,$31,$4a,$61,$78,$8d,$a1,$b4,$c5,$d4,$e0,$eb,$f4,$fa,$fd
dc.b $ff,$fd,$fa,$f4,$eb,$e0,$d4,$c5,$b4,$a1,$8d,$78,$61,$4a,$31,$18
mt_periods:
dc.w $0358,$0328,$02fa,$02d0,$02a6,$0280,$025c,$023a,$021a,$01fc,$01e0
dc.w $01c5,$01ac,$0194,$017d,$0168,$0153,$0140,$012e,$011d,$010d,$00fe
dc.w $00f0,$00e2,$00d6,$00ca,$00be,$00b4,$00aa,$00a0,$0097,$008f,$0087
dc.w $007f,$0078,$0071,$0000,$0000
mt_speed: dc.b $6
mt_songpos: dc.b $0
mt_pattpos: dc.w $0
mt_counter: dc.b $0
mt_break: dc.b $0
mt_dmacon: dc.w $0
mt_samplestarts:blk.l $1f,0
mt_voice1: blk.w 10,0
dc.w $1
blk.w 3,0
mt_voice2: blk.w 10,0
dc.w $2
blk.w 3,0
mt_voice3: blk.w 10,0
dc.w $4
blk.w 3,0
mt_voice4: blk.w 10,0
dc.w $8
blk.w 3,0
inter:
dc.l 0,0
dc.b 2,127
dc.l 0,0
dc.l spadgewirq
mt_data:
blk.b 67414,0
mt_data1:
blk.b 61004,0
done: