Why should the beginning when writing new int9 pushf? Cause 9 in press the keyboard interrupt should not be already pushf push cs push IP in so don't call pushf twice?
O great god answer, thank you very much!!!!!!

CodePudding user response:

Is a call far instruction and combined to form the interruption of the action, you said to call by the original int9 routines last iret returned to correctly; The interrupt occurs when operating, you say is what your int9 interrupt routines to balance the last iret, shortage of missed the point, the program I'm afraid to fly,