Quote Originally Posted by Christopher4187
...Like I said before, all outputs work on portc by themselves but when combines with other outputs, portc.0 through portc.3 has problems.
Call me slow, but I still do not understand. My suggested code in post #6 does activate combined pins of PORTC. If that worked, then I would try this:

PORTA = 255
pause 1000
PORTB = 255
pause
For X = 0 to 15
PORTC = X
Pause 100
NEXT X
Pause 10000
end

and see if it is still weird.

I was suspecting R-M-W issues as hinted in my subject line of post #6. Your code is full of R-M-W opportunity where the code above is not. If you still get weird results, you can rule out R-M-W issues. If your problem goes away, then it could be R-M-W.

My question about what you had connected was exactly where Steve went – possibly to much current but it seems you have ruled that out.

Paul Borgmeier
Salt Lake City, Utah
USA