[comp.sys.ibm.pc] Need help with DOS interrupts!!

grx0767@uoft02.utoledo.edu (02/23/90)

hi there,

  i have an important question.  i hope that someone out there can help me!!!
  
  i am trying to replace some interrupt vectors in the interrupt table,
  using the  INT 21H  interrupt call.  i was trying to use int 21h with
  AH=35H and AL=09H  (trying to replace the keyboard function/response) and
  insert the address of my own routine by using INT 21H with AH=25H and 
  AL=09H.  the problem is that when i run it it pukes and locks up the system,
  all interrupts are disabeled.  this is not the result that i want!!  ;')
  i know that it is getting locked up within the interrupt itself and not in
  another part of my code. 

  any suggestion that anyone could offer i would greatly appreciate.  please
  remember though, i am trying to do this with the  INT 21H interrupt call.


						thanks in advance,

						    janet

						    cscon103@uoft02.utoledo.edu