The person that said he got PORTC pull-ups to work on a 16F1503, has a total of 1 post on that forum.
Completely unreliable source.

The register, and the pull-ups do not exist in hardware.
No amount of messing with the code will change that fact.

Attempting to write to that address will result in errors from the assembler.
You can use the FSR's to indirectly write to address 020E ... but no pull-ups will activate on PORTC, because they're not there.
And when you read it back it returns all 0's.
I have actually done that with a 16F1503.

Quote Originally Posted by Aussie Barry
I am not sure who to believe.
I'm Crushed!