> > You need to save everything you use which the main program might use.
> > So if you use PCLATH then yes you must save it and restore it.
>
>     thanks, it's a good answer... :)
>
>     I've made some experiments and after some thought I'm now using (you
> will find it very similar to the Microchip code on the PICs datasheets):
>
>         #INT_GLOBAL
>         void interrupt(void)
>         {
>             static byte s1_save;
>             static byte s2_save;
>             static byte s3_save;
>
>             #asm
>             // save registers
>             MOVWF s1_save
>             SWAPF STATUS,W
>             BCF   STATUS,RP0
>             BCF   STATUS,RP1
>             MOVWF s2_save
>             MOVF  PCLATH,W
>             MOVWF s3_save
>             CLRF  PCLATH
>             #endasm
>
>             if (INTCON.RTCC) {
>                 INTCON.RTCC = 0;
>                 // do that thing you do...
>             }
>
>             #asm
>             // restore registers
>             BCF   STATUS,RP0
>             BCF   STATUS,RP1
>             MOVF  s3_save,W
>             MOVWF PCLATH
>             SWAPF s2_save,W
>             MOVWF STATUS
>             SWAPF s1_save,F
>             SWAPF s1_save,W
>             #endasm
>         }
>
>     Best regards,
>
>     Brusque

> Hello,
>
>     is anyone here using the #INT_GLOBAL pragma in CCS-PICC?
>     If yes, how do you do context saving?
>     Do I need to save only the W and STATUS registers?
>     Or do I need to save PCLATH also?
>
>     Thank you very much,
>
>     Brusque
>
> -----------------------------------
> Edson Brusque
> Research and Development
> C.I.Tronics Lighting Designers Ltda
> (47) 323-2685  /  (47) 9993-6453
> Blumenau  -  SC  -  Brazil
> http://www.citronics.com.br
> -----------------------------------
>
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> Brusque,
> conetxt saving is handled automatically by the compiler!
>
> Edson Brusque wrote:
>
> > Hello,
> >
> >     is anyone here using the #INT_GLOBAL pragma in CCS-PICC?
> >     If yes, how do you do context saving?
> >     Do I need to save only the W and STATUS registers?
> >     Or do I need to save PCLATH also?
> >
> >     Thank you very much,
> >
> >     Brusque
> >
> > -----------------------------------
> > Edson Brusque
> > Research and Development
> > C.I.Tronics Lighting Designers Ltda
> > (47) 323-2685  /  (47) 9993-6453
> > Blumenau  -  SC  -  Brazil
> > http://www.citronics.com.br
> > -----------------------------------
> >
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> >
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>
> Seyi Odeinde
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> Earth-Ocean Systems
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