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Add beta 2 patch: Fix inherit the earth harddisk size detection.

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Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@2757
This commit is contained in:
Peter Veenstra 2007-01-12 20:59:04 +00:00
parent 89d0cd5778
commit 46d89dc3b3
1 changed files with 13 additions and 7 deletions
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20
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 1.30 2007-01-08 19:45:41 qbix79 Exp $ */
/* $Id: bios_disk.cpp,v 1.31 2007-01-12 20:59:04 qbix79 Exp $ */
#include "dosbox.h"
#include "callback.h"
@ -253,7 +253,7 @@ Bit32u imageDisk::getSectSize(void) {
static Bitu GetDosDriveNumber(Bitu biosNum) {
switch(biosNum) {
case 0x0:
case 0x0:
return 0x0;
case 0x1:
return 0x1;
@ -300,15 +300,16 @@ static Bitu INT13_DiskHandler(void) {
int i,t;
last_drive = reg_dl;
drivenum = GetDosDriveNumber(reg_dl);
bool any_images = false;
for(Bitu i = 0;i < MAX_DISK_IMAGES;i++) {
if(imageDiskList[i]) any_images=true;
}
//drivenum = 0;
//LOG_MSG("INT13: Function %x called on drive %x (dos drive %d)", reg_ah, reg_dl, drivenum);
switch(reg_ah) {
case 0x0: /* Reset disk */
{
bool any_images = false;
for(Bitu i = 0;i < MAX_DISK_IMAGES;i++) {
if(imageDiskList[i]) any_images=true;
}
/* if there aren't any diskimages (so only localdrives and virtual drives)
* always succeed on reset disk. If there are diskimages then and only then
* do real checks
@ -344,6 +345,11 @@ 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(driveInactive(drivenum)) {
reg_ah = 0xff;
CALLBACK_SCF(true);
@ -367,7 +373,7 @@ static Bitu INT13_DiskHandler(void) {
}
}
reg_ah = 0x00;
CALLBACK_SCF(false);
CALLBACK_SCF(false);
break;
case 0x3: /* Write sectors */