So I have these 12f chips, with 5 outputs and one input.

I figure I should connect something up to the input, so I can have some
control over what happens on the outputs.  switches and serial data are
both interesting, but the immediate idea is to connect an IRRC receiver
there, so I can control my PIC with my TV's remote.

This is an ideal application, I would think, for interrupts.  Set the
input to interrupt on change to get the "leading edge" of the sequence,
then use the timer to get several subsequent interrupts at where the
data bits ought to be, and go back to 'change on interrupt' when it's
all done.  Piece of cake...

Except when i read the documentation more carefully, I see that the IoC
interrupt is cleared by any IO to the port, and my outputs are being
driven all the time.  There is even a caveat that IoC interrupts may be
missed entirely if the transition occurs during an IO instruction to the
port.  Hmmph.  That doesn't sound good.  Does anyone have any
experience with how much trouble this is likely to be in real life?
You can assume that the output pins are driving a multiplexed array of
LEDs, and the IRRC would be used to select a particular pattern, or
something like that.  So it's not CRITICAL that the commands be
detected immediately, but it would be annoying to have the commands
detected a couple bits late a significant percentage of the time...

Thanks
Bill W

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