dosbox-wii/src/dos/dos_ioctl.cpp

103 lines
3.0 KiB
C++
Raw Normal View History

2009-05-02 23:03:37 +02:00
/*
* Copyright (C) 2002 The DOSBox Team
*
* 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 Library 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.
*/
#include <string.h>
#include "dosbox.h"
#include "callback.h"
#include "mem.h"
#include "cpu.h"
#include "dos_inc.h"
#define MAX_DEVICE 20
static DOS_File * dos_devices[MAX_DEVICE];
2009-05-02 23:20:05 +02:00
bool DOS_IOCTL(void) {
Bitu handle;Bit8u drive;
if (reg_al<8) { /* call 0-7 use a file handle */
handle=RealHandle(reg_bx);
if (handle>=DOS_FILES) {
DOS_SetError(DOSERR_INVALID_HANDLE);
return false;
}
if (!Files[handle]) {
DOS_SetError(DOSERR_INVALID_HANDLE);
return false;
}
}
2009-05-02 23:03:37 +02:00
switch(reg_al) {
case 0x00: /* Get Device Information */
reg_dx=Files[handle]->GetInformation();
return true;
case 0x07: /* Get Output Status */
LOG_DEBUG("DOS:IOCTL:07:Fakes output status is ready for handle %d",handle);
reg_al=0xff;
return true;
2009-05-02 23:20:05 +02:00
case 0x08: /* Check if block device removable */
drive=reg_bl;if (!drive) drive=dos.current_drive;else drive--;
if (Drives[drive]) {
if (drive<2) reg_ax=0; /* Drive a,b are removable if mounted */
else reg_ax=1;
return true;
} else {
DOS_SetError(DOSERR_INVALID_DRIVE);
return false;
2009-05-02 23:12:18 +02:00
}
2009-05-02 23:20:05 +02:00
case 0x0D: /* Generic block device request */
{
PhysPt ptr = SegPhys(ds)+reg_dx;
drive=reg_bl;if (!drive) drive=dos.current_drive;else drive--;
switch (reg_cl) {
case 0x60: /* Get Device parameters */
mem_writeb(ptr ,0x03); // special function
mem_writeb(ptr+1,(drive>=2)?0x05:0x14); // fixed disc(5), 1.44 floppy(14)
mem_writew(ptr+2,drive>=2); // nonremovable ?
mem_writew(ptr+4,0x0000); // num of cylinders
mem_writeb(ptr+6,0x00); // media type (00=other type)
break;
default :
LOG_ERROR("DOS:IOCTL Call 0D:%2X Drive %2X unhandled",reg_cl,drive);
return false;
}
return true;
}
case 0xE: /* Get Logical Drive Map */
drive=reg_bl;if (!drive) drive=dos.current_drive;else drive--;
if (Drives[drive]) {
reg_al=0; /* Only 1 logical drive assigned */
return true;
} else {
DOS_SetError(DOSERR_INVALID_DRIVE);
return false;
2009-05-02 23:12:18 +02:00
}
2009-05-02 23:20:05 +02:00
break;
2009-05-02 23:03:37 +02:00
default:
2009-05-02 23:20:05 +02:00
LOG_ERROR("DOS:IOCTL Call %2X unhandled",reg_al);
2009-05-02 23:03:37 +02:00
return false;
};
return false;
};
bool DOS_GetSTDINStatus(void) {
Bit32u handle=RealHandle(STDIN);
if (Files[handle]->GetInformation() & 64) return false;
return true;
};