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correct trap-flag handling in rep_movs instructions (fixes J-Bird booter);

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handle reading of zero sectors through int13 correctly (fixes Metropolis booter)


Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@2367
This commit is contained in:
Sebastian Strohhäcker 2005-11-04 21:22:06 +00:00
parent 8d663041b0
commit 2233eb6662
2 changed files with 12 additions and 1 deletions
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1
src/cpu/core_normal/string.h
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@ -34,6 +34,7 @@ static void DoString(STRING_OP type) {
CPU_Cycles=0;
LOADIP; //RESET IP to the start
} else {
if ((count<=1) && (CPU_Cycles<=1)) CPU_Cycles--;
/* Won't interrupt scas and cmps instruction since they can interrupt themselves */
count_left=0;
}

12
src/ints/bios_disk.cpp
View file

@ -16,7 +16,7 @@
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
/* $Id: bios_disk.cpp,v 1.23 2005-10-22 10:28:57 c2woody Exp $ */
/* $Id: bios_disk.cpp,v 1.24 2005-11-04 21:22:06 c2woody Exp $ */
#include "dosbox.h"
#include "callback.h"
@ -318,6 +318,11 @@ static Bitu INT13_DiskHandler(void) {
}
break;
case 0x2: /* Read sectors */
if (reg_al==0) {
reg_ah = 0x01;
CALLBACK_SCF(true);
return CBRET_NONE;
}
if(driveInactive(drivenum)) {
reg_ah = 0xff;
CALLBACK_SCF(true);
@ -368,6 +373,11 @@ static Bitu INT13_DiskHandler(void) {
CALLBACK_SCF(false);
break;
case 0x04: /* Verify sectors */
if (reg_al==0) {
reg_ah = 0x01;
CALLBACK_SCF(true);
return CBRET_NONE;
}
if(driveInactive(drivenum)) return CBRET_NONE;
/* TODO: Finish coding this section */