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added basic handlers for int 25 and int 26

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Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@708
This commit is contained in:
Peter Veenstra 2003-03-03 20:34:05 +00:00
parent 712de9cd78
commit 24c3854149
1 changed files with 34 additions and 2 deletions
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36
src/dos/dos.cpp
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@ -33,7 +33,7 @@ DOS_Block dos;
DOS_InfoBlock dos_infoblock;
Bit8u dos_copybuf[0x10000];
static Bitu call_20,call_21,call_27,call_28,call_29;
static Bitu call_20,call_21,call_25,call_26,call_27,call_28,call_29;
void DOS_SetError(Bit16u code) {
dos.errorcode=code;
@ -860,7 +860,29 @@ static Bitu DOS_27Handler(void)
if (DOS_ResizeMemory(dos.psp,&para)) DOS_Terminate(true);
return CBRET_NONE;
}
static Bitu DOS_25Handler(void) {
if(Drives[reg_al]==0){
reg_ax=0x8002;
CALLBACK_SCF(true);
}else{
CALLBACK_SCF(false);
reg_ax=0;
if((reg_cx != 1) ||(reg_dx != 1))
LOG(LOG_DOSMISC,"int 25 called but not as diskdetection");
}
return CBRET_NONE;
}
static Bitu DOS_26Handler(void) {
LOG(LOG_DOSMISC,"int 26 called: hope for the best!");
if(Drives[reg_al]==0){
reg_ax=0x8002;
CALLBACK_SCF(true);
}else{
CALLBACK_SCF(false);
reg_ax=0;
}
return CBRET_NONE;
}
static Bitu DOS_28Handler(void) {
return CBRET_NONE;
}
@ -885,6 +907,14 @@ void DOS_Init(Section* sec) {
CALLBACK_Setup(call_21,DOS_21Handler,CB_IRET_STI);
RealSetVec(0x21,CALLBACK_RealPointer(call_21));
call_25=CALLBACK_Allocate();
CALLBACK_Setup(call_25,DOS_25Handler,CB_RETF);
RealSetVec(0x25,CALLBACK_RealPointer(call_25));
call_26=CALLBACK_Allocate();
CALLBACK_Setup(call_26,DOS_21Handler,CB_RETF);
RealSetVec(0x26,CALLBACK_RealPointer(call_26));
call_27=CALLBACK_Allocate();
CALLBACK_Setup(call_27,DOS_27Handler,CB_IRET);
RealSetVec(0x27,CALLBACK_RealPointer(call_27));
@ -919,5 +949,7 @@ void DOS_Init(Section* sec) {
/* shutdown function */
sec->AddDestroyFunction(&DOS_ShutDown);
}