Posted on May 26, 2004 at 12:42I use STPC consumer II on a PC104. I have got DOS6.22 and I work with TURBOC. I want to use IRQ12 as a hardware interrupt. A square signal is connect on the ISA IRQ12 Pin.
My C program run ok on an old STPC Client but not on STPC consumer II. The program build but when I run it, the program doesn't jump on the interrupt function.
#include
#include
#include
void interrupt int_timer(void);
void interrupt (*old_int12)(void);
#define irq12 0x74 // Adresse de irq12 : Timer
unsigned char compteur = 1;
void interrupt int_timer(void)
{
compteur++;
outportb(0x20,0x20); //PIC1 EOI
outportb(0xA0,0x20); //PIC2 EOI
}
void main(void)
{
disable();
old_int12 = getvect(irq12);
setvect(irq12,int_timer);
outportb(0x20+1,inportb(0x20+1) & ~0x04);
outportb(0xA0+1,inportb(0xA0+1) & ~0x10);
enable();
getch();
printf(''compteur : %i'', compteur);
setvect(irq12,old_int12); // IRQ12 ==> Timer
}
if you met this problem, would you help me ?
