* 
* Copyright (C) 1996-1997 Id Software, Inc. 
* 
* This program is free software; you can redistribute it and/or 
* modify it under the terms of the GNU General Public License 
* as published by the Free Software Foundation; either version 2 
* of the License, or (at your option) any later version. 
* 
* This program is distributed in the hope that it will be useful, 
* but WITHOUT ANY WARRANTY; without even the implied warranty of 
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.   
* 
* See the GNU General Public License for more details. 
* 
* You should have received a copy of the GNU General Public License 
* along with this program; if not, write to the Free Software 
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA. 
* 

**
**  MMU hack for Amiga 68k
**  Written by Frank Wille <frank@phoenix.owl.de>
**


        XDEF    _MMUHackOn
        XDEF    _MMUHackOff

        mc68040


_MMUHackOn:
        movem.l d0-a6,-(sp)
        move.l  $4.w,a6
        jsr     -150(a6)                ;SuperState
        move.l  d0,-(sp)
        jsr     -120(a6)                ;Disable
        cpusha  bc
        movec   DTT0,d0
        move.l  d0,OldDTT0
        movec   DTT1,d0
        move.l  d0,OldDTT1
        move.l  #$c040,d0
        movec   d0,DTT0
        move.l  #$0fc020,d0
        movec   d0,DTT1
        jsr     -126(a6)                ;Enable
        move.l  (sp)+,d0
        jsr     -156(a6)                ;UserState
        movem.l (sp)+,d0-a6
        rts

_MMUHackOff:
        movem.l d0-a6,-(sp)
        move.l  $4.w,a6
        jsr     -150(a6)                ;SuperState
        move.l  d0,-(sp)
        jsr     -120(a6)                ;Disable
        cpusha  bc
        move.l  OldDTT0,d0
        movec   d0,DTT0
        move.l  OldDTT1,d0
        movec   d0,DTT1
        jsr     -126(a6)                ;Enable
        move.l  (sp)+,d0
        jsr     -156(a6)                ;UserState
        movem.l (sp)+,d0-a6
        rts

OldDTT0:
        dc.l    0
OldDTT1:
        dc.l    0