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init.i
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; startup code to kill system and set up copperlist and vblank interrupt
section code
include include/libraries.i
include include/hardware.i
Execbase = 4
init
movem.l d0-a6,-(a7)
move.l (Execbase).w,a6
lea System(pc),a5
move.l sp,Userstack(a5)
jsr SuperState(a6)
move.w $128(a6),d1
btst #0,d1
beq.b .noexcpu
movec vbr,d1
move.l d1,Vecbase(a5)
.noexcpu
move.l d0,d1
moveq #14,d2
sub.l d2,d1
move.l d1,Superstack(a5)
jsr UserState(a6)
lea .gfxname(pc),a1
moveq #33,d0
jsr Openlib(a6)
move.l d0,Gfxbase(a5)
beq.w exit
move.l d0,a6
move.l 34(a6),Viewscr(a5)
move.l 38(a6),Oldcopper(a5)
suba.l a1,a1
jsr LoadView(a6)
jsr WaitTOF(a6)
jsr WaitTOF(a6)
jsr OwnBlitter(a6)
jsr WaitBlit(a6)
move.l (Execbase).w,a6
jsr Forbid(a6)
cmpi.b #50,530(a6)
seq.b Frequency(a5)
********************************
movem.l Setup(pc),d0/d1/a4/a6
lea Hardware(a5),a1
move.w Dmaconr(a6),(a1)
or.w d1,(a1)+
move.w Intenar(a6),(a1)
or.w d1,(a1)+
move.w Intreqr(a6),(a1)
or.w d1,(a1)+
move.w Adkconr(a6),(a1)
or.w d1,(a1)
********************************
move.w d0,Dmacon(a6)
move.l d0,Intena(a6)
move.w d0,Adkcon(a6)
********************************
move.w #$0020,BEAMCON0(a6)
lea SPR0POS(a6),a0
moveq #0,d1
move.w d1,COLOR00(a6)
moveq #14-1,d0
.loop
move.l d1,(a0)+
dbf d0,.loop
bsr.w killdrives
********************************
move.w LisaID(a6),d0
cmpi.b #$f8,d0
sne.b Agaflag(a5)
********************************
move.l Vecbase(a5),a1
move.l $6c(a1),Lvl3vec(a5)
lea Lvl3irq(pc),a0
move.l a0,$6c(a1)
move.w #$c020,Intena(a6)
********************************
move.l a5,inita5store
move.l a6,inita6store
move.w #$83c0,Dmacon(a6) ; Turn on needed DMA
movem.l (a7)+,d0-a6
rts
.gfxname dc.b "graphics.library",0
even
deinit
movem.l d0-a6,-(a7)
movea.l inita5store,a5
movea.l inita6store,a6
move.l #$7fff7fff,d0
move.w d0,Dmacon(a6)
move.l d0,Intena(a6)
move.w d0,Adkcon(a6)
move.l Vecbase(a5),a1
move.l Lvl3vec(a5),$6c(a1)
move.l Oldcopper(a5),Cop1lch(a6)
move.w d0,Copjmp1(a6)
lea Hardware(a5),a1
move.w (a1)+,Dmacon(a6)
move.w (a1)+,Intena(a6)
move.w (a1)+,Intreq(a6)
move.w (a1),Adkcon(a6)
********************************
move.l Gfxbase(a5),a6
move.l Viewscr(a5),a1
jsr LoadView(a6)
jsr DisownBlitter(a6)
move.l a6,a1
move.l (Execbase).w,a6
jsr Closelib(a6)
jsr Permit(a6)
exit
moveq #0,d0
movem.l (a7)+,d0-a6
rts
killdrives
moveq #3,d0
.mop1
bclr d0,$100(a4)
bsr.b .pause
bset #7,$100(a4)
bsr.b .pause
bset d0,$100(a4)
bsr.b .pause
addq.b #1,d0
cmpi.b #7,d0
bne.b .mop1
rts
.pause
moveq #2-1,d1
.mop2
move.b Vhposr(a6),d2
.mop3
cmp.b Vhposr(a6),d2
beq.b .mop3
dbf d1,.mop2
rts
********************************
Setup:
dc.l $7fff7fff
dc.l $80008000
dc.l $bfd000
dc.l $dff000
inita5store dc.l 0
inita6store dc.l 0
rsreset
Agaflag: rs.b 1
Frequency: rs.b 1
Hardware: rs.w 4
Gfxbase: rs.l 1
Viewscr: rs.l 1
Oldcopper: rs.l 1
Lvl3vec: rs.l 1
Vecbase: rs.l 1
Userstack: rs.l 1
Superstack: rs.l 1
Sys_sizeof: rs.b 0
System:
ds.b Sys_sizeof