> ok, great. Hopefully I can find the specs for the remote and
> validate what sort of lengths of time I'm going to be dealing with

I've looked up some old 877 code I used to characterise and then
simulate the output from a Philips SAA3001 IR transmitter used
as a 2-wire keyboard encoder

Its timing is based on a 455kHz ceramic oscillator, which gives
a base Tosc of 2.2us. Pulse width is Tosc x 4, "0" space is Tosc
x (2 x 1152), "1" space is Tosc x (3 x 1152), inter-burst space is
Tosc x 55296

The PIC runs at 20MHz -> 200ns IC. INT is set to trigger on the
rising edge of the first pulse, the period of which is counted by
TMR1. During this time the polarity of INT is flipped to trigger
on the falling edge of the pulse, at which point TMR1 is saved
to RAM. It's cleared and measures the period of the following
"0" or "1" space. This pulse-space measuring continues until a
TMR1 roll-over occurs, which means that the data burst has
finished and it's into the inter-burst period. On the next INT IRQ
(which is the rising edge of the first pulse of the next burst),
measuring ceases and the RAM values are saved to EEPROM
(after compensation for non-counting instruction cycles) so they
can be read in MPLAB to determine the 01 pattern

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