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narrow down low-level disk read hack (installers use it as hd-check), thanks to ripsaw; fixes Kick Off 3 regression

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Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@3456
This commit is contained in:
Sebastian Strohhäcker 2009-08-12 21:16:09 +00:00
parent 21612af820
commit b9e085dd52
1 changed files with 10 additions and 7 deletions
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17
src/ints/bios_disk.cpp
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@ -16,7 +16,7 @@
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
/* $Id: bios_disk.cpp,v 1.38 2009-05-27 09:15:42 qbix79 Exp $ */
/* $Id: bios_disk.cpp,v 1.39 2009-08-12 21:16:09 c2woody Exp $ */
#include "dosbox.h"
#include "callback.h"
@ -196,7 +196,7 @@ imageDisk::imageDisk(FILE *imgFile, Bit8u *imgName, Bit32u imgSizeK, bool isHard
active = false;
hardDrive = isHardDisk;
if(!isHardDisk) {
Bitu i=0;
Bit8u i=0;
bool founddisk = false;
while (DiskGeometryList[i].ksize!=0x0) {
if ((DiskGeometryList[i].ksize==imgSizeK) ||
@ -349,12 +349,15 @@ static Bitu INT13_DiskHandler(void) {
CALLBACK_SCF(true);
return CBRET_NONE;
}
if(!any_images && (reg_dh == 0)) { // Inherit the Earth cdrom (uses it as disk test)
reg_ah = 0;
CALLBACK_SCF(false);
return CBRET_NONE;
if (!any_images) {
// Inherit the Earth cdrom (uses it as disk test)
if (((reg_dl&0x80)==0x80) && (reg_dh==0) && ((reg_cl&0x3f)==1)) {
reg_ah = 0;
CALLBACK_SCF(false);
return CBRET_NONE;
}
}
if(driveInactive(drivenum)) {
if (driveInactive(drivenum)) {
reg_ah = 0xff;
CALLBACK_SCF(true);
return CBRET_NONE;