Things that make you go hmmmmm

I have solid hardware working with a 16F887, least solid in the
fact the IO works fine.  I took the same board, and replaced it
with a 18F4420, as its the only part I could identify that its pretty
much a drop in replacement, in as much as pin definitions, etc.

So the code ports over, and with eliminating the page boundary calls
and other minor things, its cycling and doing its thing, almost.

The ports that are outputs work fine, the drive what they are supposed
to drive.  But the inputs are not working, so thats what makes
me go hmmmmm......

Yes I've checked the TRIS registers, they are setup correctly. I
have probed at the pins and I see the input changing from 0 to 1,
so we are good there.  Ive also made sure that PORTB is set for digital
and ADCON1 has all digital.

Just wierd...doesn't seem to want to see inputs...


      
-- 
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist