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|
**************************************************************************
** **
** MYEXEC - Verschiedene Routinen die so manches Programm braucht **
** **
** by Christian A. Weber, Zurich/Switzwerland **
** **
**************************************************************************
** **
** Modification History **
** -------------------- **
** **
** 18-May-89 CHW Recreated this file! **
** 20-Jun-89 CHW Supports 1MB CHIP RAM **
** 29-Jun-89 CHW Auf Genim2 umgeschrieben **
** 22-Aug-89 CHW AddHead() added **
** 27-Aug-89 CHW AddHead() rettet nun die Register (!^%#$@) **
** 13-Sep-89 CHW CopyMem() rettet nun D0 (grmbl!) **
** 06-Nov-89 CHW SetCache() added **
** 27-Nov-89 CHW FastMem support routines added **
** 04-Feb-90 CHW Zero-Handler & other Guru handlers added **
** 11-Feb-90 CHW Supervisor-Stack ist jetzt im FAST-RAM **
** 28-Mar-90 CHW ColdReboot() implementiert, ABORT springt dahin **
** 18-Sep-90 CHW CheckMem() implementiert und so **
** 20-Oct-90 CHW Config-File entfernt, MainPrg muss am Anfang sein **
** 30-Dec-90 CHW Gecrunchte Files werden automatisch entcruncht **
** 06-Jan-91 CHH BufLoadFile testet ob genug RAM vorhanden ist **
** 11-Feb-91 CHH BufReadFile eingebaut **
** 18-Feb-91 CHW Multitasking-fähige Version **
** 06-May-91 CHW Diskroutine kann jetzt schreiben **
** **
**************************************************************************
IDNT Exec
SECTION text,CODE
INCLUDE "MyExec.i"
INCLUDE "exec/macros.i"
INCLUDE "zeropage.i"
INCLUDE "hardware/custom.i"
INCLUDE "hardware/dmabits.i"
INCLUDE "hardware/intbits.i"
STACKSIZE: EQU 5432 ; Grösse des Super-Stacks
ROMCRACKEXCEPT: EQU $fc2ff4+(2*6) ; ROMCrack Exception-Einspr.
ROMCRACKSPEC: EQU $fc2ff4+(4*6) ; ROMCrack Special-Einsprung
INITMAGIC: EQU 'INIT' ; steht vor InitExecFunc()
FFSMAGIC: EQU $444f5301
FN_MAINPRG: EQU $01030010 ; Disk 1, Track 3, 1. File
**************************************************************************
XREF _custom,__H2_end
XREF InitChipMemFunc,InitFastMemFunc
XREF AllocMemFunc,AllocClearMemFunc
XREF AllocFastMemFunc,AllocFastClearMemFunc
XREF AvailMemFunc,AvailFastMemFunc,CheckMemFunc
XREF FreeMemFunc,ClearMemFunc,CopyMemQuickFunc,CopyMemFunc
XREF InitKeyFunc,GetKeyFunc,WaitKeyFunc,FlushKeyBufFunc
XREF SetMapFunc,SetResetHandlerFunc,SetCheatTextFunc
XREF RawDoFmtFunc,_RawPrintfFunc
XREF RandomizeFunc,RandomFunc
XREF InitDiskFunc,SetNoDiskHandlerFunc,ReadFileFunc
XREF WriteFileFunc,LoadFileFunc,LoadFastFileFunc
XREF LoadSegFunc,UnLoadSegFunc,SendPacketFunc
XREF InitRAMLib,BufReadFileFunc,BufLoadFileFunc
XREF DeleteFileNodeFunc,DeleteFileListFunc
XREF WaitBlit,InitDrawBob,AddBob,RemBob,RemAllBobs
XREF RestoreBobList,DrawBobList
XREF RestoreOneBob,DrawOneBob
XREF AnimateOneBob,MoveOneBob,TestPoint
XREF SetMovePrg,SetAnimPrg,SetGlobalClip
XREF HandleCollision,CollOneBob,FlashBob,GetBobData
IFD SYSTEM
XREF ExitKeyFunc
XREF InitCDFunc,ExitCDFunc,PlayCDTrackFunc,WaitCDTrackFunc
ENDC
XDEF __MyExecBase,_InitExec,_idstring
XDEF InitExecFunc,ColdRebootFunc,SetCacheFunc,DebugFunc
XDEF NewListFunc,EnqueueFunc,RemoveFunc
XDEF AddHeadFunc,AddTailFunc,RemHeadFunc
XDEF DisableFunc,EnableFunc
**************************************************************************
*** Die Zero-Page mit den vielen Vektoren
__MyExecBase:
Null: DC.L 0 ; $00 := 0 für Sprites usw.
BRA.W JumpZero ; $04 Falls jemand nach 0 springt ...
DC.L Guru2Handler ; $08
DC.L Guru3Handler ; $0C
DC.L Guru4Handler ; $10
DC.L Guru5Handler ; $14
DC.L Guru6Handler ; $18
DC.L Guru7Handler ; $1C
DC.L Guru8Handler ; $20
DC.L Guru9Handler ; $24
DC.L GuruAHandler ; $28
DC.L GuruBHandler ; $2C
DC.L GuruCHandler ; $30
DC.L GuruDHandler ; $34
DC.L GuruEHandler ; $38
DC.L GuruFHandler ; $3C
DCB.L 9,0 ; $40-$60 ; Reserved exceptions
DC.L DebugFunc ; $64 ; Interrupt Level 1
DC.L CiaAServer ; $68 ; Interrupt Level 2
DC.L VBLServer ; $6C ; Interrupt Level 3
DC.L DebugFunc ; $70 ; Interrupt Level 4
DC.L DebugFunc ; $74 ; Interrupt Level 5
DC.L CiaBServer ; $78 ; Interrupt Level 6
DC.L ColdRebootFunc ; $7C ; Interrupt Level 7
DCB.L 16,0 ; $80-$BC ; Trap-Vectors 0-15
DC.B "CHW!" ; $C0 ; Kennung für Booter!
DCB.L 15,0 ; $C4-$FC ; Reserviert
*** Tada! Die ExecBase-Struktur
DC.L 0 ; Nicht debuggen!
DC.L 'ICH!' ; ROMCrackMagic für Mem
DC.L $1d0000 ; ROMCrackBSS
DC.L $1e0000 ; ROMCrackChipMem
DC.L ROMCrackText ; ROMCrack's Debug-Text
*** Private Einträge
DCB.B mh_SIZEOF,0 ; MemoryRegionHeader
DCB.B mh_SIZEOF,0 ; FastMemoryRegionHeader
DC.L 0 ; RAMDiskBase
DC.L 0 ; RAMDiskSize
DC.L FN_MAINPRG ; MainPrgName
DC.L $affebad,356789 ; LastRnd1,LastRnd2
DCB.B lh_SIZEOF,0 ; DiskList
DCB.B lh_SIZEOF,0 ; FileList (für RAMLib)
DC.W 0 ; Product-Code
DC.B -1 ; IDNestCnt
DC.B 0 ; ExecFlags
*** Erlaubte Einträge
DC.L 0 ; SuperStackUpper
DC.W 0 ; AttnFlags
DC.W 0 ; SystemBplcon0
DC.B 0 ; VBlankFrequency
DC.B 0 ; expad2
DC.B 0 ; ActualKey
DC.B 0 ; ActualQualifiers
DC.B 0 ; ActualASCIIKey
DC.B 0 ; CheatFlag
DCB.B lh_SIZEOF,0 ; BobList
DC.L 0 ; TripleScreen: Zeiger auf 3. BitMap
DC.W 0 ; SignalSet (für Bobroutine)
DC.L 0 ; UserData1
DC.L 0 ; UserData2
DCB.B 6,0 ; exreserved, pad auf LONG
DC.W 0 ; LONG-Align
DC.W $4EF9 ; VBL-Jmp
DC.L 0 ; VBL-Vektor
DC.W 0 ; LONG-Align
DC.W $4EF9 ; Copper-Jmp
DC.L 0 ; Copper-Vektor
DCB.L 2*5,0 ; Cia-Interruptvektoren
DC.L INITMAGIC ; Steht vor InitExecFunc()
_InitExec:
BRA.W InitExecFunc ; MUSS 1. Funktion sein: FinalBooter.S
BRA.W ColdRebootFunc ; MUSS 2. Funktion sein: FinalBooter.S
BRA.W InitChipMemFunc
BRA.W InitFastMemFunc
BRA.W InitDiskFunc
BRA.W InitKeyFunc
BRA.W SetCacheFunc
BRA.W DebugFunc
BRA.W AllocMemFunc
BRA.W AllocClearMemFunc
BRA.W AllocFastMemFunc
BRA.W AllocFastClearMemFunc
BRA.W FreeMemFunc
BRA.W AvailMemFunc
BRA.W AvailFastMemFunc
BRA.W CheckMemFunc
BRA.W CopyMemFunc
BRA.W CopyMemQuickFunc
BRA.W ClearMemFunc
BRA.W DisableFunc
BRA.W EnableFunc
BRA.W OwnBlitterFunc
BRA.W DisownBlitterFunc
BRA.W NewListFunc
BRA.W EnqueueFunc
BRA.W RemoveFunc
BRA.W AddHeadFunc
BRA.W AddTailFunc
BRA.W RemHeadFunc
BRA.W GetKeyFunc
BRA.W WaitKeyFunc
BRA.W FlushKeyBufFunc
BRA.W SetMapFunc
BRA.W SetResetHandlerFunc
BRA.W SetCheatTextFunc
BRA.W RawDoFmtFunc
BRA.W _RawPrintfFunc
BRA.W PlayCDTrackFunc
BRA.W WaitCDTrackFunc
BRA.W RandomizeFunc
BRA.W RandomFunc
BRA.W SetNoDiskHandlerFunc
BRA.W ReadFileFunc
BRA.W WriteFileFunc
BRA.W LoadFileFunc
BRA.W LoadFastFileFunc
BRA.W LoadSegFunc
BRA.W UnLoadSegFunc
BRA.W BufReadFileFunc
BRA.W BufLoadFileFunc
BRA.W DeleteFileNodeFunc
BRA.W DeleteFileListFunc
BRA.W SendPacketFunc
BRA.W WaitBlit
BRA.W InitDrawBob
BRA.W AddBob
BRA.W RemBob
BRA.W RemAllBobs
BRA.W RestoreBobList
BRA.W DrawBobList
BRA.W RestoreOneBob
BRA.W DrawOneBob
BRA.W AnimateOneBob
BRA.W MoveOneBob
BRA.W TestPoint
BRA.W SetMovePrg
BRA.W SetAnimPrg
BRA.W SetGlobalClip
BRA.W HandleCollision
BRA.W CollOneBob
BRA.W FlashBob
BRA.W GetBobData
IFNE (*-Null)-__EXECBASESIZE
Fail "ExecBase structure size mismatch!"
ENDC
BRA.W UndefdFunc
BRA.W UndefdFunc
BRA.W UndefdFunc
BRA.W UndefdFunc
DCB.B 7,0
VersTag: DC.B 0,"$VER: "
_idstring:
ROMCrackText: DC.B "GAME EXEC Operating System V4.4 (16-Apr-92)",0
DC.B "Copyright (c) 1989 - 1992 by Christian A. Weber,"
DC.B "Bruggerweg 2, CH-8037 Zuerich, Switzerland.",10,0
DC.B "All Rights Reserved.",10,0
DC.B "Greetings to Chris Haller, René Straub, Roman Werner",10,0
DCB.B 27,0
ExceptText: DC.B "Exception "
exno: DC.B "xx",0
JumpZeroText: DC.B "Caught jump to 0",0
UndefdText: DC.B "Undef'd routine",0
EVEN
**************************************************************************
** E X E C - I N I T I A L I S I E R U N G
**************************************************************************
*** SYSTEM:
*** D0=AttnFlags, D1=SystemBplcon0, D2=VBlankFrequency,
*** D3=Product Code, A0=CHIPRAM-Base, A1=CHIPRAM-Ende,
*** A2=FASTRAM-Base, A3=FASTRAM-Ende D4=MainPrg-Name
*** SONST:
*** D0=AttnFlags, D1=SystemBplcon0, D2=VBlankFrequency,
*** D3=Product Code, A0=RAMDiskBase, A1=RAMDiskSize,
*** A2=FASTRAM-Base, A3=FASTRAM-Ende A7=CHIPRAM-Ende-8
InitExecFunc:
IFD SYSTEM
SMSG <"CHIP=$%06lx-$%06lx, FAST=$%08lx-$%08lx">,a0,a1,a2,a3
ELSE
move #$2700,sr
SMSG <"CHIP=$%06lx-$%06lx, FAST=$%08lx-$%08lx">,a0,a7,a2,a3
ENDC
lea _custom,a5
lea __MyExecBase(PC),a6
*** System-Status initialisieren (NUR 1x , NICHT BEI RESTART!)
tst.b meb_VBlankFrequency(a6) ; ExecBase schon installiert?
bne.s .NotFirst ; ja --->
move.w d0,meb_AttnFlags(a6)
move.w d1,meb_SystemBplcon0(a6)
move.b d2,meb_VBlankFrequency(a6)
move.w d3,meb_ProductCode(a6)
IFND DISKVERSION
move.l d4,meb_MainPrgName(a6)
ENDC
IFD SYSTEM
move.l (SP)+,ColdRebootJmp+2 ; Return-Adresse
move.l a0,meb_ChipMRHeader+mh_Lower(a6)
move.l a1,meb_ChipMRHeader+mh_Upper(a6)
ELSEIF
move.l a0,meb_RAMDiskBase(a6) ; Muss 0 sein falls kein RAM!
move.l a1,meb_RAMDiskSize(a6) ; Muss 0 sein falls kein RAM!
move.l #__H2_end,d0 ; Ende von Exec's BSS
addq.l #7,d0
andi.b #$f8,d0 ; Modulo-8 aufrunden
move.l d0,meb_ChipMRHeader+mh_Lower(a6)
move.l SP,meb_ChipMRHeader+mh_Upper(a6)
ENDC
move.l a2,meb_FastMRHeader+mh_Lower(a6)
move.l a3,meb_FastMRHeader+mh_Upper(a6)
*** StackPointer initialisieren (ins FAST-RAM falls vorhanden)
lea meb_FastMRHeader+mh_Upper(a6),a0
tst.l (a0)
bne.s 1$ ; FAST-RAM vorhanden --->
lea meb_ChipMRHeader+mh_Upper(a6),a0
1$:
move.l (a0),d0 ; Alte Obergrenze
move.l d0,meb_SuperStackUpper(a6) ; nach StackPointer
sub.l #STACKSIZE,d0 ; Stack-Grösse wegzählen
move.l d0,(a0) ; Neue Obergrenze setzen
*** VBL und Copper-Interrupt-Server installieren falls SYSTEM
IFD SYSTEM
move.l a6,-(SP)
movea.l 4,a6
moveq #INTB_VERTB,d0
lea MyVertInt(PC),a1
JSRLIB AddIntServer
moveq #INTB_COPER,d0
lea MyCopInt(PC),a1
JSRLIB AddIntServer
movea.l (SP)+,a6
bsr InitCDFunc
ENDC
.NotFirst:
SMSG <"New stack pointer:$%08lx">,meb_SuperStackUpper(a6)
*** Speicherverwaltung initialisieren
movea.l meb_SuperStackUpper(a6),SP ; StackPointer holen
movea.l meb_ChipMRHeader+mh_Lower(a6),a0
move.l meb_ChipMRHeader+mh_Upper(a6),d0
sub.l a0,d0 ; D0 := Länge
jsr meb_ClearMem(a6)
jsr meb_InitChipMem(a6)
movea.l meb_FastMRHeader+mh_Lower(a6),a0
move.l meb_FastMRHeader+mh_Upper(a6),d0
sub.l a0,d0 ; D0 := Länge
beq.s 2$ ; Kein FAST-RAM --->
jsr meb_ClearMem(a6)
jsr meb_InitFastMem(a6)
2$:
IFD DEBUG
jsr meb_CheckMem(a6) ; a little testing ...
SMSG <"Memory init complete.">
ENDC
*** Jenes Zeugs initialisieren
IFND SYSTEM
move.w #$7fff,intena(a5) ; Alle Interrupts off
move.w #$7fff,intreq(a5) ; Interrupt-Requests löschen
move #$2000,sr ; Interrupt Level 0
move.w #INTF_SETCLR|INTF_INTEN|INTF_VERTB|INTF_COPER,intena(a5)
move.w #$7fff,dmacon(a5) ; Alle DMAs off
move.w #DMAF_SETCLR|DMAF_MASTER,dmacon(a5)
ENDC
jsr meb_InitKey(a6) ; Tastatur on
jsr meb_InitDisk(a6) ; Diskroutine on
bsr InitRAMLib ; RAMLib initialisieren
*** 1. File einladen & starten
move.l meb_MainPrgName(a6),d0 ; 1. Modul
jsr meb_LoadSeg(a6)
movea.l d0,a0 ; Muss A0 sein, User weiss es!
SMSG <"Jumping to MainPrg at $%08lx (tada!?)">,a0
jmp (a0) ; A6 muss MyExecBase sein!
**************************************************************************
*** System resetten (wir sind im Supervisor)
ColdRebootFunc:
IFD SYSTEM
bsr ExitCDFunc
bsr ExitKeyFunc
move.l a6,-(SP)
movea.l 4,a6
moveq #INTB_VERTB,d0
lea MyVertInt(PC),a1
JSRLIB RemIntServer
moveq #INTB_COPER,d0
lea MyCopInt(PC),a1
JSRLIB RemIntServer
movea.l (SP)+,a6
ColdRebootJmp: jmp (1$).L ; Zum Patchen
1$:
ENDC
IFD DISKVERSION
btst #AFB_68020,meb_AttnFlags+1(a6) ; MMU ?
beq.s 2$ ; nein --->
clr.l -(SP) ; Code für MMU off
move.l SP,a0
dc.w $f010,$4000 ; pmove (a0),tc
2$: nop
nop
lea 2,a0
RESET
jmp (a0)
ENDC
IFD RAMVERSION
jmp $1FFFFA ; ABORT
ENDC
**************************************************************************
* Level 3 Interrupt Server
IFD SYSTEM
VBLServer: EQU 0
MyVertInt: dc.l 0,0
dc.b 0,60
dc.l _idstring
dc.l __MyExecBase
dc.l 1$
* D1/A0-A1/A5-A6 = Scratch
1$: lea _custom,a5
movea.l a1,a6 ; _MyExecBase
tst.l meb_VBLIntVector(a6)
beq.s 2$
jsr meb_VBLIntJump(a6)
2$: movea.l a5,a0 ; Custom für Gfx-IntServer
moveq.l #0,d0 ; Set Z bit
rts
MyCopInt: dc.l 0,0
dc.b 0,60
dc.l _idstring
dc.l __MyExecBase
dc.l 1$
1$: lea _custom,a5
movea.l a1,a6 ; _MyExecBase
tst.l meb_CopperIntVector(a6)
beq.s 2$
jsr meb_CopperIntJump(a6)
2$: moveq.l #0,d0 ; Set Z bit
rts
ELSEIF
VBLServer: movem.l a5/a6,-(SP)
lea _custom,a5 ; User weiss das!
lea __MyExecBase(PC),a6 ; User weiss das!
btst.b #INTB_VERTB,intreqr+1(a5)
beq.s 2$
tst.l meb_VBLIntVector(a6)
beq.s 1$
jsr meb_VBLIntJump(a6)
1$: move.w #INTF_VERTB,intreq(a5)
2$:
btst.b #INTB_COPER,intreqr+1(a5)
beq.s 4$
tst.l meb_CopperIntVector(a6)
beq.s 3$
jsr meb_CopperIntJump(a6)
3$: move.w #INTF_COPER,intreq(a5)
4$:
movem.l (SP)+,a5/a6
rte
ENDC
**************************************************************************
* CIA Interrupt Server
IFD SYSTEM
CiaAServer: EQU 0
CiaBServer: EQU 0
ELSEIF
CiaAServer: movem.l d0/d2/a0/a2/a5/a6,-(SP) ; ACHTUNG: unten gleich!
lea _custom,a5 ; User weiss das!
lea __MyExecBase(PC),a6 ; User weiss das!
move.w #$0008,intreq(a5) ; Interruptrequest löschen
move.b $bfed01,d2 ; ICAA ICR auslesen
lea meb_CiaATimerAVector(a6),a2 ; Vektor-Basis
bra.s CiaCommon
CiaBServer: movem.l d0/d2/a0/a2/a5/a6,-(SP) ; ACHTUNG: oben gleich!
lea _custom,a5 ; User weiss das!
lea __MyExecBase(PC),a6 ; User weiss das!
move.w #$2000,intreq(a5) ; Interruptrequest löschen
move.b $bfdd00,d2 ; ICAB ICR auslesen
lea meb_CiaBTimerAVector(a6),a2 ; Vektor-Basis
;; bra.s CiaCommon
CiaCommon: lsr.b #1,d2 ; Timer A Interrupt ?
bcc.s 1$ ; Nein --->
move.l (a2),d0 ; Vektor gültig ?
beq.s 1$ ; nein --->
movea.l d0,a0
jsr (a0)
1$:
lsr.b #1,d2 ; Timer B Interrupt ?
bcc.s 2$ ; Nein --->
move.l 4(a2),d0 ; Vektor gültig ?
beq.s 2$ ; nein --->
movea.l d0,a0
jsr (a0)
2$:
lsr.b #1,d2 ; Alarm Interrupt ?
bcc.s 3$ ; Nein --->
move.l 8(a2),d0 ; Vektor gültig ?
beq.s 3$ ; nein --->
movea.l d0,a0
jsr (a0)
3$:
lsr.b #1,d2 ; Serial Interrupt ?
bcc.s 4$ ; Nein --->
move.l 12(a2),d0 ; Vektor gültig ?
beq.s 4$ ; nein --->
movea.l d0,a0
jsr (a0)
4$:
lsr.b #1,d2 ; Flag Interrupt ?
bcc.s 5$ ; Nein --->
move.l 16(a2),d0 ; Vektor gültig ?
beq.s 5$ ; nein --->
movea.l d0,a0
jsr (a0)
5$:
movem.l (SP)+,d0/d2/a0/a2/a5/a6
rte
ENDC
**************************************************************************
** E X C E P T I O N - H A N D L E R
**************************************************************************
*** Die Einsprünge von den ZeroPage-Vektoren:
GuruHandler: bsr.s CalcGuru
;;Guru1Handler: bsr.s CalcGuru
Guru2Handler: bsr.s CalcGuru
Guru3Handler: bsr.s CalcGuru
Guru4Handler: bsr.s CalcGuru
Guru5Handler: bsr.s CalcGuru
Guru6Handler: bsr.s CalcGuru
Guru7Handler: bsr.s CalcGuru
Guru8Handler: bsr.s CalcGuru
Guru9Handler: bsr.s CalcGuru
GuruAHandler: bsr.s CalcGuru
GuruBHandler: bsr.s CalcGuru
GuruCHandler: bsr.s CalcGuru
GuruDHandler: bsr.s CalcGuru
GuruEHandler: bsr.s CalcGuru
GuruFHandler: bsr.s CalcGuru
nop ; Damit letzter Offset != 0
CalcGuru: subi.l #GuruHandler,(SP) ; Vektornummer erzeugen
lsr.w 2(SP)
cmpi.w #$4ef9,ROMCRACKSPEC ; Ist's unsere Kickstart?
bne.s 1$ ; Nein --->
jmp ROMCRACKEXCEPT
1$: move.l #ExceptText,meb_ROMCrackDebugText+__MyExecBase
move.w 2(SP),d0
lsr.w #4,d0
add.b #'0',d0
move.b d0,exno
move.w 2(SP),d0
and.w #15,d0
add.b #'0',d0
move.b d0,exno+1
bra ColdRebootFunc
**************************************************************************
* Handler für JMP 0
JumpZero: move.l #JumpZeroText,meb_ROMCrackDebugText+__MyExecBase
bra.s DebugFunc
*** ROMCrack aufrufen
UndefdFunc: move.l #UndefdText,$110
DebugFunc: cmpi.w #$4ef9,ROMCRACKSPEC ; Ist's unsere Kickstart?
bne.s 1$ ; Nein --->
jmp ROMCRACKSPEC
1$: bra ColdRebootFunc
**************************************************************************
** E X E C - R O U T I N E N
**************************************************************************
**************************************************************************
* Cache D0 setzen
SetCacheFunc:
IFD SYSTEM
XREF @SetCACR
bra @SetCACR
ELSEIF
btst.b #AFB_68020,meb_AttnFlags+1(a6) ; Cache vorhanden ?
beq.s 1$ ; nein --->
dc.w $4E7B,$0002 ; movec d0,cacr
1$: rts
ENDC
**************************************************************************
* Blitter reservieren
OwnBlitterFunc:
IFD SYSTEM
XREF _GfxBase
move.l a6,-(SP)
movea.l _GfxBase,a6
JSRLIB OwnBlitter
JSRLIB WaitBlit
movea.l (SP)+,a6
ELSEIF
PlayCDTrackFunc:
WaitCDTrackFunc:
ENDC
rts
**************************************************************************
* Blitter freigeben
DisownBlitterFunc:
IFD SYSTEM
move.l a6,-(SP)
movea.l _GfxBase,a6
JSRLIB WaitBlit
JSRLIB DisownBlitter
movea.l (SP)+,a6
ENDC
rts
**************************************************************************
* Neue Liste initialisieren, A0: Liste
NewListFunc: move.l a0,lh_Head(a0)
addq.l #lh_Tail,(a0) ; Head zeigt auf Tail
clr.l lh_Tail(a0) ; Tail ist immer 0
move.l a0,lh_TailPred(a0) ; TailPred zeigt auf Head
rts
**************************************************************************
* Node in Liste einfügen (nach Priorität), A0: Liste, A1: Node
EnqueueFunc: movem.l d0-d1/a0,-(SP)
bsr.s DisableFunc
move.b ln_Pri(a1),d1
move.l lh_Head(a0),d0
1$: movea.l d0,a0
move.l ln_Succ(a0),d0
beq.s 2$ ; Ende der Liste --->
cmp.b ln_Pri(a0),d1 ; Priorität kleiner oder gleich ?
ble.s 1$ ; ja ---> weitersuchen
2$: move.l ln_Pred(a0),d0
move.l a1,ln_Pred(a0)
move.l a0,ln_Succ(a1)
move.l d0,ln_Pred(a1)
movea.l d0,a0
move.l a1,ln_Succ(a0)
bsr.s EnableFunc
movem.l (SP)+,d0-d1/a0
rts
**************************************************************************
* Node aus Liste entfernen, A1: Node
RemoveFunc: movem.l a0/a1,-(SP)
bsr.s DisableFunc
movea.l ln_Succ(a1),a0
movea.l ln_Pred(a1),a1
move.l a0,ln_Succ(a1)
move.l a1,ln_Pred(a0)
bsr.s EnableFunc
movem.l (SP)+,a0/a1
rts
**************************************************************************
* Node an den Anfang der Liste anhängen, A0: Liste, A1: Node
AddHeadFunc: movem.l d0/a0/a1,-(SP)
bsr.s DisableFunc
move.l lh_Head(a0),d0
move.l a1,lh_Head(a0)
movem.l d0/a0,ln_Succ(a1)
movea.l d0,a0
move.l a1,ln_Pred(a0)
bsr.s EnableFunc
movem.l (SP)+,d0/a0/a1
rts
**************************************************************************
* Interrupts sperren mit IDNestCnt und so
DisableFunc:
IFD SYSTEM
move.l a6,-(SP)
movea.l 4,a6
JSRLIB Disable
movea.l (SP)+,a6
ELSEIF
move.w #$4000,$dff09a ; Master interrupt off
addq.b #1,meb_IDNestCnt(a6) ; INC counter
ENDC
rts
**************************************************************************
* Interrupts zulassen mit IDNestCnt und so
EnableFunc:
IFD SYSTEM
move.l a6,-(SP)
movea.l 4,a6
JSRLIB Enable
movea.l (SP)+,a6
ELSEIF
subq.b #1,meb_IDNestCnt(a6)
bge.s 1$
move.w #$c000,$dff09a
1$:
ENDC
rts
**************************************************************************
* Node ans Ende der Liste anhängen, A0: Liste, A1: Node
AddTailFunc: movem.l d0/a0/a1,-(SP)
bsr.s DisableFunc
lea lh_Tail(a0),a0
move.l ln_Pred(a0),d0
move.l a1,ln_Pred(a0)
move.l a0,ln_Succ(a1)
move.l d0,ln_Pred(a1)
move.l d0,a0
move.l a1,ln_Succ(a0)
bsr.s EnableFunc
movem.l (SP)+,d0/a0/a1
rts
**************************************************************************
* Ersten Node aus Liste entfernen, A0: Liste gibt D0: Node, CCR
RemHeadFunc: movem.l a0/a1,-(SP)
bsr.s DisableFunc
move.l lh_Head(a0),a1
move.l ln_Succ(a1),d0
beq.s 1$
move.l d0,lh_Head(a0)
exg d0,a1
move.l a0,ln_Pred(a1)
1$: bsr.s EnableFunc
movem.l (SP)+,a0/a1
tst.l d0
rts
**************************************************************************
END
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