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Added some logical drive map ioctl functions.

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Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@417
This commit is contained in:
Sjoerd van der Berg 2002-10-25 15:40:17 +00:00
parent e6a9638b74
commit 8dd0a0f8cc
1 changed files with 51 additions and 24 deletions
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75
src/dos/dos_ioctl.cpp
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@ -26,16 +26,20 @@
#define MAX_DEVICE 20
static DOS_File * dos_devices[MAX_DEVICE];
bool DOS_IOCTL(Bit8u call,Bit16u entry) {
Bit32u handle=RealHandle(entry);
if (handle>=DOS_FILES) {
DOS_SetError(DOSERR_INVALID_HANDLE);
return false;
};
if (!Files[handle]) {
DOS_SetError(DOSERR_INVALID_HANDLE);
return false;
};
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;
}
}
switch(reg_al) {
case 0x00: /* Get Device Information */
reg_dx=Files[handle]->GetInformation();
@ -44,23 +48,46 @@ bool DOS_IOCTL(Bit8u call,Bit16u entry) {
LOG_DEBUG("DOS:IOCTL:07:Fakes output status is ready for handle %d",handle);
reg_al=0xff;
return true;
case 0x0D: {
PhysPt ptr = SegPhys(ds)+reg_dx;
Bit8u drive = reg_bl ? reg_bl : DOS_GetDefaultDrive()+1; // A=1, B=2, C=3...
switch (reg_cl) {
case 0x60 : mem_writeb(ptr ,0x03); // special function
mem_writeb(ptr+1,(drive>=3)?0x05:0x14); // fixed disc(5), 1.44 floppy(14)
mem_writew(ptr+2,drive>=3); // 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;
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;
}
return true;
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;
}
break;
default:
LOG_ERROR("DOS:IOCTL Call %2X Handle %2X unhandled",reg_al,handle);
LOG_ERROR("DOS:IOCTL Call %2X unhandled",reg_al);
return false;
};
return false;