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Added int 27 handler (tsr)

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Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@490
This commit is contained in:
Ulf Wohlers 2002-11-08 14:13:54 +00:00
parent 5a4c1e320a
commit 38117780b5
1 changed files with 12 additions and 1 deletions
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13
src/dos/dos.cpp
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@ -32,7 +32,7 @@ DOS_Block dos;
DOS_InfoBlock dos_infoblock;
Bit8u dos_copybuf[0x10000];
static Bitu call_20,call_21;
static Bitu call_20,call_21,call_27;
void DOS_SetError(Bit16u code) {
dos.errorcode=code;
@ -840,6 +840,13 @@ static Bitu DOS_20Handler(void) {
return CBRET_NONE;
}
static Bitu DOS_27Handler(void)
{
// Terminate & stay resident
Bit16u para = (reg_dx/16)+((reg_dx % 16)>0);
if (DOS_ResizeMemory(dos.psp,&para)) DOS_Terminate(true);
return CBRET_NONE;
}
void DOS_Init(Section* sec) {
MSG_Add("DOS_CONFIGFILE_HELP","Setting a memory size to 0 will disable it.\n");
@ -851,6 +858,10 @@ void DOS_Init(Section* sec) {
CALLBACK_Setup(call_21,DOS_21Handler,CB_IRET);
RealSetVec(0x21,CALLBACK_RealPointer(call_21));
call_27=CALLBACK_Allocate();
CALLBACK_Setup(call_27,DOS_27Handler,CB_IRET);
RealSetVec(0x27,CALLBACK_RealPointer(call_27));
DOS_SetupFiles(); /* Setup system File tables */
DOS_SetupDevices(); /* Setup dos devices */
DOS_SetupTables();