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RunRealFar and RunRealInt have been fixed.

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Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@150
This commit is contained in:
Sjoerd van der Berg 2002-08-13 04:53:31 +00:00
parent d0b600b420
commit 44c0b660fc
1 changed files with 14 additions and 21 deletions
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35
src/cpu/callback.cpp
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@ -32,7 +32,7 @@
CallBack_Handler CallBack_Handlers[CB_MAX];
static Bitu call_runint16,call_idle,call_default,call_runfar16;
static Bitu call_stop,call_idle,call_default;
static Bitu illegal_handler(void) {
E_Exit("Illegal CallBack Called");
@ -73,23 +73,24 @@ static Bitu stop_handler(void) {
void CALLBACK_RunRealFar(Bit16u seg,Bit16u off) {
real_writew((Bit16u)CB_SEG,(call_runfar16<<4)+1,off);
real_writew((Bit16u)CB_SEG,(call_runfar16<<4)+3,seg);
reg_sp-=4;
real_writew(Segs[es].value,reg_sp,call_stop<<4);
real_writew(Segs[es].value,reg_sp+2,CB_SEG);
Bit32u oldeip=reg_eip;
Bit16u oldcs=Segs[cs].value;
reg_eip=call_runfar16<<4;
SetSegment_16(cs,CB_SEG);
reg_eip=off;
SetSegment_16(cs,seg);
DOSBOX_RunMachine();
reg_eip=oldeip;
SetSegment_16(cs,oldcs);
}
void CALLBACK_RunRealInt(Bit8u intnum) {
real_writeb((Bit16u)CB_SEG,(call_runint16<<4)+1,intnum);
Bit32u oldeip=reg_eip;
Bit16u oldcs=Segs[cs].value;
reg_eip=call_runint16<<4;
reg_eip=call_stop<<4;
SetSegment_16(cs,CB_SEG);
Interrupt(intnum);
DOSBOX_RunMachine();
reg_eip=oldeip;
SetSegment_16(cs,oldcs);
@ -139,20 +140,12 @@ void CALLBACK_Init(void) {
for (i=0;i<CB_MAX;i++) {
CallBack_Handlers[i]=&illegal_handler;
}
/* Setup the Software interrupt handler */
call_runint16=CALLBACK_Allocate();
CallBack_Handlers[call_runint16]=stop_handler;
real_writeb((Bit16u)CB_SEG,(call_runint16<<4),0xCD);
real_writeb((Bit16u)CB_SEG,(call_runint16<<4)+2,0xFE);
real_writeb((Bit16u)CB_SEG,(call_runint16<<4)+3,0x38);
real_writew((Bit16u)CB_SEG,(call_runint16<<4)+4,call_runint16);
/* Setup the Far Call handler */
call_runfar16=CALLBACK_Allocate();
CallBack_Handlers[call_runfar16]=stop_handler;
real_writeb((Bit16u)CB_SEG,(call_runfar16<<4),0x9A);
real_writeb((Bit16u)CB_SEG,(call_runfar16<<4)+5,0xFE);
real_writeb((Bit16u)CB_SEG,(call_runfar16<<4)+6,0x38);
real_writew((Bit16u)CB_SEG,(call_runfar16<<4)+7,call_runfar16);
/* Setup the Stop Handler */
call_stop=CALLBACK_Allocate();
CallBack_Handlers[call_stop]=stop_handler;
real_writeb((Bit16u)CB_SEG,(call_stop<<4)+0,0xFE);
real_writeb((Bit16u)CB_SEG,(call_stop<<4)+1,0x38);
real_writew((Bit16u)CB_SEG,(call_stop<<4)+2,call_stop);
/* Setup the idle handler */
call_idle=CALLBACK_Allocate();
CallBack_Handlers[call_idle]=stop_handler;