"Renfroe, Patrick B (Contractor-NTA)" a �crit :
> I have an ISA board using interrupt 5. I am trying to set up an interrupt
> handler for this board that uses system interrupt 13. The following code
> was used to do this in dos.
>
> /* Port addresses for the 8259A interrupt controller */
>
> #define INT_MASK_PORT 0x0021
> #define INT_CONTROLLER 0x0020
> #define SPECIFIC_EOI_IR5 0x0065
>
> /******************************************************/
>
> void interrupt HS_Int_Handler (...) {
> .
> .
> handler code
> .
> .
> }
>
> Orig_Int_13_Handler = dos_getvect (13);
> _dos_setvect (13, HS_Int_Handler);
> outportb (INT_MASK_PORT, inportb (INT_MASK_PORT) & ~IRQ_5);
> outportb (INT_CONTROLLER, SPECIFIC_EOI_IR5);
> _enable();
> .
> .
> .
> collect data
> .
> .
> .
> //Disable interrupt from HS
> outportb (INT_MASK_PORT, inportb (INT_MASK_PORT) | IRQ_5);
> _dos_setvect (13, Orig_Int_13_Handler);
> outportb(INT_CONTROLLER, SPECIFIC_EOI_IR5);
> _enable
>
> How do I do this in rtlinux??
>
> Thanks for any help,
> Patrick
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Hi
Here's a piece of help
#include <asm/io.h>
#define ADR 0Xxxxxxxxx
char cVal;
inportb => cVal = inb (ADR);
outportb => outb (cVal, ADR);
- Nicolas
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