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
Azog-Thoth@cup.portal.com (William Thomas Daugustine) (02/24/90)
In artical <582.25e449cd@uoft02.utoledo.edu> janet cscon103euoft02.utoledo.edu asks: ----- 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 ----- Perhaps if you posted your message to comp.sys.ibm instead of comp.os.cpm, you would get a better response. Since Im still using CP/M these days, I have no contact with the MS-DOS world, and prefer it that way. Maybe some of the other people who subscribe to this newsgroup feel the same way. . +------------------------------------------+---------------------+ | Billy D'Augustine (201)989-8161 | The author is not | | Azog-Thoth@cup.portal.com | responsable for | | sun!portal!cup.portal.com!Azog-Thoth | typgraphic errors! | +------------------------------------------+---------------------+