Edward Gisske wrote :

> I am working of a 16C617 project and have been dealing with
> some annoying behavior on Port B. I am using B:3 as a PWM
> output. Everytime  that I write to a*different* Port B pin,...

How ? Using bcf/bsf with PORTB as the target ?

> I have to reinitialize B:3 high...

What does "reinitialize" means ? Re-writing the TRISB reg ?
Or the PORTB reg ?

> to unclamp the PWM output.

In what way is the PWM output "clamped" ?

> Is this some sort of byproduct of the Read:Modify:Write
> issue,

Could be, depends on what you actualy are doing. Can't say
since you don't realy tell us.

> and does anyone know of a handy avoidance technique?

*If* its the R-M-W problem, it's the standard shadow register
thing. But that could be hard if you are doing SW-PWM. But since
you already have a solution, maybe just build that into your
application ?

Best Regards,
Jan-Erik.

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