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Yep that did it. Adding a clear_interrupt(INT_RA0) did the trick:

Code:
void main()
{
init();
do {
clear_interrupt(INT_RA);
enable ...

I think the problem is that the external pin wake-up interrupt does not have a handler and/or the interrupt flag never gets cleared. It works fine to wake the chip up but when the timer0 int is set up ...

Is there something missing in this handler? It does repeatedly toggle the output as expected.

#int_timer0
T0ISR()
{
output_toggle(PIN_A2);
}

...

setup_tim ...

Thanks PCM. That explains it.

I have a loop that takes pin input from timer1, reads eeprom and outputs highs and lows on pins to flash LEDs with delays from delay_ms and delay_us, but if I set u ...

I have A0 set up to wake up a 16F18323 which works fine:
enable_interrupts(INT_RA0);

This works without using enable_interrupts(GLOBAL).

But a timer0 overflow interrupt (during non-slee ...

Got it working. After disabling most of the functions controlled by PMD0:

PMD0 = 0b11111110; // all off except pin change interrupt

Then restoring PMD0 after wakeup from a pin change:

s ...

one hint...
to reduce power, be sure to disable any peripherals you're not using.
another
be sure output pins are either high or low NOT 'floating'.

The '636 draws sleep current that I can't mea ...

temtronic, PCM Programmer and Ttelmah:

Thank you all again for taking the time to help with this project... both now and ten years ago!

All is working now after configuring PPS and getting timer ...

since your original PIC doesn't have 'single pulse ' mode, simply use the timer1 as before.

BTW since that PIC is 'PPS', be 100% sure that's all setup before you cut 'real code'.......

Yes, I d ...

The timer 1 block diagram on page 265 of the '18323 datasheet shows the T1GSPM bit enabling single pulse mode when low, but the text says otherwise:

Timer1 Gate Single-Pulse mode is first enabled ...

It wakes from int on A0:
do {
dummy=input(BUTTON); //Pin A0
clear_interrupt(INT_RA);
enable_interrupts(INT_RA0);
SENSOR_POWER = 0;
s ...

Well it's time to switch chips. The code is from 10 years ago when Ttelmah, PCM programmer and temtronic all helped me. Here's the link if you're curious:
#include <16F636.h>
#include "p ...

Better check STOCK !
Yes, already ordered the next one up, the 16F18324. Thanks for looking into it.

Now for the task of migrating code from the PIC16F636, but that will most likely be a new threa ...

The newer 18323 one is almost half the price and ran the code. Ha... but now they'll need a $300 programmer (ICD4)!

They can use the far cheaper Pickit4.

Ahh... didn't know about this one. It l ...

I was using a 16f636, but it got expensive and this project is for educational (as in "cheap") use. The newer 18323 one is almost half the price and ran the code. Ha... but now they'll need ...