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Clear less bios area as potentially overwrites dos stuff if the bios would become restartable

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Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@2303
This commit is contained in:
Peter Veenstra 2005-09-08 13:08:52 +00:00
parent ad7700fa3b
commit dd97f1a4bd
1 changed files with 4 additions and 3 deletions
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7
src/ints/bios.cpp
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@ -16,7 +16,7 @@
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
/* $Id: bios.cpp,v 1.43 2005-07-30 14:41:31 qbix79 Exp $ */
/* $Id: bios.cpp,v 1.44 2005-09-08 13:08:52 qbix79 Exp $ */
#include "dosbox.h"
#include "mem.h"
@ -595,7 +595,8 @@ private:
public:
BIOS(Section* configuration):Module_base(configuration){
/* Clear the Bios Data Area */
for (Bit16u i=0;i<1024;i++) real_writeb(0x40,i,0);
/* till where does this bios Area run ? Some dos stuff is at 0x70 */
for (Bit16u i=0;i<0x200;i++) real_writeb(0x40,i,0);
/* Setup all the interrupt handlers the bios controls */
/* INT 8 Clock IRQ Handler */
//TODO Maybe give this a special callback that will also call int 8 instead of starting
@ -707,7 +708,7 @@ public:
// look http://www.bioscentral.com/misc/bda.htm
//Bitu config=0x4400; //1 Floppy, 2 serial and 1 parrallel
Bitu config = 0;
Bitu config = 0x0;
// set number of parallel ports
// if(ppindex == 0) config |= 0x8000; // looks like 0 ports are not specified