From: "Michael Schuster" Organization: LS f. Elektr. Energieversorgung To: djgpp AT delorie DOT com Date: Tue, 17 Dec 1996 10:48:27 MEZ Subject: Hardware Interrupts with C Message-Id: Hi out there! After all I solved my hardware interrupt problem I postet to this group by myself. I've written the wrapper and other relating stuff preparing the interrupt as described in libc - info. The Interrupt was ok, but when leaving the program, it crashed, and I never knew why. In my interrupt routine an short array was filled with values by inportb (myport). When I defined the array e.g. with short data[11][120]; and used it in the IR, the program crashed when leaving the IR or stopping it within the programm. After declaring with short **data; and malloc'ed the pointer the IR works stable, and now works with allegro and rhide pretty good. Does anyone know why the difference in behaviour? Anyway, if someone needs a "hardware interrupt preparing routine" contact me. I don't think that my code is wonderful but it helps if you have to do this stuff. start( irq_number): Installs an proteced mode IR, driven by the Hardware IR with number irq_number. halt(irq_number): Halts the interrupt irq_number, does not uninstall it; re_start (irq_number): restarts an installed IR close_int(irq_number): uninstalls the handler and stops the IR my_handler(): Your function, which your IR executes. ********************************************** Michael Schuster E-mail: Schuster AT eev DOT e-technik DOT uni-erlangen DOT de Universitaet Erlangen/Nuernberg Lehrstuhl fuer Elektrische Energieversorgung Cauerstrasse 4 91058 Erlangen http://www.eev.e-technik.uni-erlangen.de/ **********************************************