Important Notice

The pages on this site contain documentation for very old MS-DOS software, purely for historical purposes. If you're looking for up-to-date documentation, particularly for programming, you should not rely on the information found here, as it will be woefully out of date.

 ◄Detail►                                    ◄Up► ◄Contents► ◄Index► ◄Back►
────────────────────────────────────────────────────────────────────────────
 
  Interrupt:   01h
 
  Title:       Single Step
 
  Description:                                          [PC] [AT] [PS/2]
 
     When trap flag is set, the processor invokes Int 01h after
     executing each instruction.
 
     This interrupt should not be called directly. Default service is
     interrupt return (IRET). To trap Int 01h calls, a program must set
     up a handler routine to gain control when the interrupt occurs.
 
     Input     Output
 
     None      None
                                    -♦-