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p-interp.lha
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p-interp-0.4
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UnitIo.c
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2001-06-09
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/*
P-Code interpreter (to run the apple pascal system)
Copyright (C) 2000 Mario Klebsch
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
$Log: UnitIo.c,v $
Revision 1.5 2001/05/23 21:16:41 mario
Turtlegraphics wurde als eigener Prozess ausgelagert.
Revision 1.4 2001/05/21 19:06:48 mario
Mode-Parameter bei den Disk-IO-Routinen entfernt
Revision 1.3 2001/05/20 20:14:40 mario
Neues Gerät PRINTER: implementiert
Revision 1.2 2001/05/20 13:12:02 mario
CVS-Idents und Logs eingefügt
*/
#ident "$Id: UnitIo.c,v 1.5 2001/05/23 21:16:41 mario Exp $";
#include <stdio.h>
#include "psystem.h"
#include "Memory.h"
#include "Diskio.h"
#include "Term.h"
void IoError(word Result)
{
MemWr(IORSLT, Result);
}
void UnitRead(word Unit, word Addr, Integer AddrOffset,
word Len, word Block, word Mode)
{
IoError(0);
switch(Unit)
{
case 1:
case 2:
while (Len--)
{
char ch=TermRead();
if (Unit==1)
TermWrite(ch, 0);
MemWrByte(Addr, AddrOffset++, ch);
}
break;
case 4:
case 5:
case 9:
case 10:
case 11:
case 12:
DiskRead(Unit, Addr, AddrOffset, Len, Block);
break;
default:
IoError(2);
break;
}
}
void PrinterWrite(byte ch, word Mode);
void UnitWrite(word Unit, word Addr, Integer AddrOffset,
word Len, word Block, word Mode)
{
IoError(0);
switch(Unit)
{
case 1:
case 2:
while (Len--)
TermWrite(MemRdByte(Addr, AddrOffset++), Mode);
break;
case 4:
case 5:
case 9:
case 10:
case 11:
case 12:
DiskWrite(Unit, Addr, AddrOffset, Len, Block);
break;
case 6:
while (Len--)
PrinterWrite(MemRdByte(Addr, AddrOffset++), Mode);
break;
default:
IoError(2);
break;
}
}
void PrinterClear(void);
void GraphicsClear(void);
void UnitClear(word Unit)
{
IoError(0);
switch(Unit)
{
case 1:
case 2:
break;
case 4:
case 5:
case 11:
case 12:
DiskClear(Unit);
break;
case 3:
PrinterClear();
#ifdef TURTLEGRAPHICS
GraphicsClear();
#endif
break;
case 6:
PrinterClear();
break;
default:
IoError(9);
break;
}
}
void UnitStat(word Unit, word Addr, Integer Offset, word Dummy)
{
IoError(0);
switch(Unit)
{
case 1:
case 2:
MemWr(Addr, TermStat());
break;
case 4:
case 5:
case 11:
case 12:
DiskStat(Unit);
break;
default:
IoError(9);
break;
}
}
word UnitBusy(word Unit)
{
IoError(0);
return(0);
}
void UnitWait(word Unit)
{
IoError(0);
}