MikroElektronika put out this bug workaround for some PIC16s:

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Bug ID: #03800000
Submitted by: Donovan Rogall

Severity: medium (affects mikroC PRO for PIC v3.80)
Status: Fixed, changes will affect following release

Description:
PIC16 interrupt context saving instructions do not backup higher nibble of
STATUS register.

Workaround:
Instead of using default interrupt routine name:


Code: Select all

void interrupt()

use any other function name, and org the function to interrupt vector
address:


Code: Select all

void interrupt_routine() org 0x04


_________________
mikroElektronika Product Manager
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Allen

> -----Original Message-----
> From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] On Behalf
Of
> Richard R. Pope
> Sent: Monday, July 21, 2014 5:58 AM
> To: Microcontroller discussion list - Public.
> Subject: Re: [Pic] Making a special timer!
>=20
> Jan-Erik,
>      I thought the compiler saved the context info automatically. Yes, I
> am using XC8. So I have a complete program that is ready to test. I'll
> probably do that tomorrow. The code as I have it compiles with no errors
> and I believe that my logic is correct. I should be able to look at
> these signals with my scope and I can hook it up to my counters and
> display chips. This is looking good. Thanks everyone for all of your
> help. It is greatly appreciated.
> rich!
>=20
> On 7/21/2014 4:48 AM, Jan-Erik Soderholm wrote:
> > You have to check your compiler docs.
> >
> > I'm sure XC8 does.
> >
> > The MicroC docs (I might not have the latest, if you are
> > using MikroC, verify this) says that W, STATUS, FSR, PCLATH
> > are saved by the compiler.
> >
> > My MicrkC docs doesn't say anything about the newer PIC16's,
> > but that wasn't of any interest to you anyway, right? :-)
> >
> > Jan-Erik.
> >
> >
> >
> >
>=20
> --
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> View/change your membership options at
> http://mailman.mit.edu/mailman/listinfo/piclist


--=20
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