• Imran Haider (5/5) Nov 21 2001 charset="iso-8859-1"
• Roland (19/21) Nov 22 2001 //declarations

"Imran Haider" <absolute1008 hotmail.com> writes:

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Content-Transfer-Encoding: quoted-printable

Can anyone give me a short example on int_setvector function?   I have =
no idea on how to split the interrupt address into segment and offset.   =
Thanks

Roland <rv ronetech.com> writes:

 Imran Haider a écrit :

 Can anyone give me a short example on int_setvector function?   I have no idea
on how to split the interrupt address into segment and offset.   Thanks

//declarations

static int _cdecl int_handler(INT_DATA* idata);

//trap vector:

if (int_intercept(no_int,int_handler,int_stack_size)!=0) goto err;


//untrap vector (if trap was ok):

int_restore(no_int);

//interrupt handler:

static int _cdecl int_handler(INT_DATA* idata) {
//at entry, if hardware interrupt, cpu flag if is 0 (interrupt locked), PIC
8929 interrupt mask is off
            .
            .
    do what you have to do (!! if hardware asynchronous interrupt there is some
particular knowledge to have !!)
            .
            .
     return 0;            //return 0 if you want to call original interrupt

        or

    return 1            //return 1 if you don't want to call original interrupt
                           //!! if hardware interrupt, you have to send a End
Of Interrupt to Interrupt Controller PIC 8259
}