# include <dos.h> char far* CtrlAltPtr=(char far*)0x417; void interrupt (*OldKeyboardInterruptFunction)( ); void interrupt NewKeyboardInterruptFunction( ); int main( ) { OldKeyboardInterruptFunction=getvect(0x09); setvect(0x09,NewKeyboardInterruptFunction); keep(0,(_SS+(_SP/16)-_psp)); return 0; } //------------------ NewKeyboardInterruptFunction( ) ------------------// void interrupt NewKeyboardInterruptFunction( ) { *CtrlAltPtr=0x0C; (*OldKeyboardInterruptFunction)( ); } [/Code]