> Im a bootloader kind a guy so MPSIM is new to me but code runs OK, it
> reacts to stimulus just the way I want it. Burning it to a real
> 12c508jw and nothing happens.

By the way, the 12C508 was obsoleted by the 12C508A some time ago.  Unless
this is a very high volume project, I would use the 12F629 instead of the
12C508A anyways.

> Hardware is simple, one trigger input on GP2, 2 DIPs to GND on GP0 and
> GP1 (internal pullups enabled), and finaly one output on GP4. +5 on pin
> 1 and GND on pin 8.
>
> Any ideas?

MCLR tied high?  What is the oscillator configuration?


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