>> Is there any real application for these damned functions???
>> 
> Think of keypads

Pretty sure IOC is a legacy function of the earliest PICs for interfacing
a 4 x 4 keypad on PortB. Drive from the lower nybble and detection
by the upper. I've considered using it a few times but found it would be
troublesome. Plan B usually is something like diode-OR inputs to an
interrupt pin and then poll

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