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Setup some more register to startup default when booting. Fixes BuckRogers booter

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Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@2290
This commit is contained in:
Peter Veenstra 2005-08-24 21:12:24 +00:00
parent f4c9569dbf
commit 147e30b948
1 changed files with 14 additions and 3 deletions
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17
src/dos/dos_programs.cpp
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@ -16,7 +16,7 @@
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
/* $Id: dos_programs.cpp,v 1.40 2005-08-11 18:57:48 qbix79 Exp $ */
/* $Id: dos_programs.cpp,v 1.41 2005-08-24 21:12:24 qbix79 Exp $ */
#include <stdlib.h>
#include <string.h>
@ -32,6 +32,9 @@
#include "dos_inc.h"
#include "bios.h"
#if C_DEBUG
Bitu DEBUG_EnableDebugger(void);
#endif
void MSCDEX_SetCDInterface(int intNr, int forceCD);
@ -281,7 +284,6 @@ static void MEM_ProgramStart(Program * * make) {
extern Bit32u floppytype;
class BOOT : public Program {
private:
FILE *getFSFile(Bit8u * filename, Bit32u *ksize, Bit32u *bsize) {
@ -392,7 +394,16 @@ public:
SegSet16(cs, 0);
reg_ip = 0x7c00;
SegSet16(ds, 0);
SegSet16(ss, 0);//Buckrogers Booter
reg_esp = 0x400;
SegSet16(es, 0);
reg_esi = 0;
reg_ecx = 1;
reg_ebp = 0;
reg_eax = 0;
reg_ebx= 0x7c00; //Real code is probably uses bx to load the image
//DEBUG_EnableDebugger();
/* Most likely a PCJr ROM */