Is there any good reason that I can't get the RA4 input to work with PULSIN? I am using a PIC18F1220 with a 20MHZ resonator. PULSIN works fine on any PORTB pin, but won't fly on RA4. RA4 works as a simple digital input; slow on/off transitions; but when looking at the output from a R/C receiver (digital proportional signals), it counts zero pulses. Like I said, all the hardware/software works fine on port B.

I went through two days of hell trying to configure this thing, but apparently that is now working (CONFIG statement in the P18F1220.INC file, which gives warning errors). I have experience using this same code and logic on three other PICs. I am just trying to convert it over to this one.

Any help would be appreciated. And yes I have searched and searched and read all of the config links, PIC data sheets, etc. Thanks in advance.