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- ; This routine shows how to use the diskchange prog, you call with
- ; d0 = drive to check, note: this routine doesnt hang if u specify a
- ; non-existen drive, nor if there is no disk, it will return with
- ; d0 = 0 if a disk is found, or d0 = -1 if there isn't a disk in the drive..
- ;
- ; this routine shows a grey screen for no-disk, and white for drive with disk
- ;
-
- Opt c-
- Section "Disk-in-drive check Example",Code_c
-
- IncDir Df1:
-
- Start Movem.l d0-d7/a0-a6,-(sp)
- Bsr KillSys
-
- Lea CopperList(pc),a0
- Lea HardWare,a6
- Move.l a0,Cop1Lc(a6)
- Move.w #$83c0,DMACon(a6)
-
- CheckLoop Moveq #1,d0 ; Check Drive 1 for a disk
- Bsr DiskChange+$20 ; Do the Check
-
- Tst.l d0 ; If d0=0 then disk founmd
- Beq DiskFound ; Do found routine
-
- NoDiskInDrive Move.w #$333,$Dff180 ; d0=-1 if no disk in drive
- Bra CheckNext ;
-
- DiskFound Move.w #$fff,$Dff180 ; Disk found = White Screen
-
- CheckNext Move.w #40,d7 ;
- WaitLoop Move.l #$05000,d1 ; Quick pause between next
- Bsr WaitVBL ; disk check
- Bsr DoWaitVBL ;
- Dbf d7,WaitLoop ;
-
- Btst #6,$Bfe001 ; Test the mouse, quit if
- Bne CheckLoop ; Pressed...
-
- Bsr ReturnSys
- Movem.l (sp)+,d0-d7/a0-a6
- Moveq #0,d0
- Rts
-
- KillSys Bsr.s SysWait
-
- Move.l $4,a6
- Lea GFXName(pc),a1
- Moveq #0,d0
- Jsr -552(a6)
-
- Lea OldCop1(pc),a5
- Move.l $26(a0),$0(a5)
- Move.l $32(a0),$4(a5)
-
- Lea HardWare,a6
- Move.w IntEnaR(a6),d0
- Move.w DMAConR(a6),d1
- Or.w #$8000,d0
- And.w #$03ff,d1
- Or.w #$8000,d1
- Move.w d0,$8(a5)
- Move.w d1,$a(a5)
-
- Move.w #$7fff,IntEna(a6)
- Move.w #$7fff,DMACon(a6)
- Rts
-
- SysWait Move.w #15,d7
- SysWaitLoop Move.l #$05000,d1
- Bsr.s WaitVBL
- Bsr.s DoWaitVBL
- Dbf d7,SysWaitLoop
- Rts
-
- DoWaitVBL Move.l #$03000,d1
- WaitVBL Movem.l d0-d1/a6,-(sp)
- Lea HardWare,a6
- WaitVBLLoop Move.l VPosR(a6),d0
- And.l #$1ff00,d0
- Cmp.l d1,d0
- Bne.s WaitVBLLoop
- Movem.l (sp)+,d0-d1/a6
- Rts
-
- ReturnSys Lea HardWare,a6
- Move.w OldIntEna(pc),IntEna(a6)
- Move.w OldDMACon(pc),DMACon(a6)
- Move.l OldCop1(pc),Cop1lc(a6)
- Move.l OldCop2(pc),Cop2lc(a6)
- Rts
-
- GFXName Dc.b "graphics.library",0
- Even
- OldCop1 Dc.l 0
- OldCop2 Dc.l 0
- OldIntEna Dc.w 0
- OldDmaCon Dc.w 0
- Screen Dc.l $c0000
-
- Cmv Macro
- Dc.w \2,\1
- EndM
-
- Cwt Macro
- Dc.w (\1*$100)+$01,$fffe
- EndM
-
- Pal Macro
- Dc.w $ffe1,$fffe
- EndM
-
- EndCop Macro
- Dc.w $ffff,$fffe
- EndM
-
- CopperList Cwt $15
- Cmv $0200,BplCon0
- Cmv $00bb,BplCon1
- Cmv $000a,BplCon2
- Cmv $0034,DdfStrt
- Cmv $00c8,DdfStop
- Cmv $1681,DiwStrt
- Cmv $36c1,DiwStop
- Cmv $0,BplMod1
- Cmv $0,BplMod2
-
- CopperCols Cwt $25
- Cmv $0,Color01
-
- Cwt $28
- Cmv $200,BplCon0
-
- EndCop
-
- DiskChange Incbin MyMateMarmite/DiskChange-Seg
-
- ****Custom Chip Registers****
-
- Hardware = $Dff000
-
- ;Control Registers
-
- Dmaconr = $002
- Vposr = $004
- Vhposr = $006
- Joy0dat = $00A
- Joy1dat = $00C
- Clxdat = $00E
- Intenar = $01C
- Intereqr = $01E
- Copcon = $02E
-
- ;Blitter Registers
-
- Bltcon0 = $040
- Bltcon1 = $042
- Bltafwm = $044
- Bltalwm = $046
- Bltcpth = $048
- Bltcptl = $04A
- Bltbpth = $04C
- Bltbptl = $04E
- Bltapth = $050
- Bltaptl = $052
- Bltdpth = $054
- Bltdptl = $056
- Bltsize = $058
- Bltcmod = $060
- Bltbmod = $062
- Bltamod = $064
- Bltdmod = $066
- Bltcdat = $070
- Bltbdat = $072
- Bltadat = $074
-
- ;Copper Registers
-
- Cop1lc = $080
- Cop1lch = $080
- Cop1lcl = $082
- Cop2lc = $084
- Cop2lch = $084
- Cop2lcl = $086
- Copjmp1 = $088
- Copjmp2 = $08A
- Diwstrt = $08E
- Diwstop = $090
- Ddfstrt = $092
- Ddfstop = $094
- Dmacon = $096
- Clxcon = $098
- Intena = $09A
- Intreq = $09C
-
- ;BitPlane Registers
-
- BplCon0 = $100
- BplCon1 = $102
- BplCon2 = $104
- BplMod1 = $108
- BplMod2 = $10a
-
- BplPt0h = $0e0
- BplPt0l = $0e2
- BplPt1h = $0e4
- BplPt1l = $0e6
- BplPt2h = $0e8
- BplPt2l = $0ea
- BplPt3h = $0ec
- BplPt3l = $0ee
- BplPt4h = $0f0
- BplPt4l = $0f2
- BplPt5h = $0f4
- BplPt5l = $0f6
-
- ;Colour Registers
-
- Color00 = $180
- Color01 = $182
- Color02 = $184
- Color03 = $186
- Color04 = $188
- Color05 = $18a
- Color06 = $18c
- Color07 = $18e
- Color08 = $190
- Color09 = $192
- Color10 = $194
- Color11 = $196
- Color12 = $198
- Color13 = $19a
- Color14 = $19c
- Color15 = $19e
- Color16 = $1a0
- Color17 = $1a2
- Color18 = $1a4
- Color19 = $1a6
- Color20 = $1a8
- Color21 = $1aa
- Color22 = $1ac
- Color23 = $1ae
- Color24 = $1b0
- Color25 = $1b2
- Color26 = $1b4
- Color27 = $1b6
- Color28 = $1b8
- Color29 = $1ba
- Color30 = $1bc
- Color31 = $1be
-
- EcsNop = $1fe
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