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Runrealint uses a table with 0xcd 0x00-0xff instructions now

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Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@1438
This commit is contained in:
Sjoerd van der Berg 2003-11-18 20:46:01 +00:00
parent 8f5af81299
commit 57a32fa94e
1 changed files with 13 additions and 3 deletions
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16
src/cpu/callback.cpp
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@ -16,7 +16,7 @@
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
/* $Id: callback.cpp,v 1.17 2003-11-09 16:44:07 finsterr Exp $ */
/* $Id: callback.cpp,v 1.18 2003-11-18 20:46:01 harekiet Exp $ */
#include <stdlib.h>
#include <stdio.h>
@ -98,9 +98,8 @@ void CALLBACK_RunRealFar(Bit16u seg,Bit16u off) {
void CALLBACK_RunRealInt(Bit8u intnum) {
Bit32u oldeip=reg_eip;
Bit16u oldcs=SegValue(cs);
reg_eip=call_stop<<4;
reg_eip=(CB_MAX*16)+(intnum*6);
SegSet16(cs,CB_SEG);
Interrupt(intnum);
DOSBOX_RunMachine();
reg_eip=oldeip;
SegSet16(cs,oldcs);
@ -223,6 +222,17 @@ void CALLBACK_Init(Section* sec) {
for (i=0;i<0x40;i++) {
real_writed(0,i*4,CALLBACK_RealPointer(call_default));
}
/* Setup block of 0xCD 0xxx instructions */
PhysPt rint_base=CB_BASE+CB_MAX*16;
for (i=0;i<=0xff;i++) {
phys_writeb(rint_base,0xCD);
phys_writeb(rint_base+1,i);
phys_writeb(rint_base+2,0xFE);
phys_writeb(rint_base+3,0x38);
phys_writew(rint_base+4,call_stop);
rint_base+=6;
}
real_writed(0,0x67*4,CALLBACK_RealPointer(call_default));
//real_writed(0,0xf*4,0); some games don't like it
}