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One quick way is to use the Configure Menu in MPLAB (after you compile)
and select Configuration Bits, and change it from "HS" to "HS oscillator,
PLL enabled". Then program the ...

Also, your compiler version is not compiling the H4 fuse correctly.
It's actually compiling it for the HS fuse. Because of that, your PIC
will run at 1/4 of the desired speed. It's a bug in your v ...

Yeah I have the "Configuration Bits set in code" box ticked.
I will double check that I am indeed compiling for run and not debug.
I am running this on a custom homemade board.

Tha ...

Oh my bad! Here is what I compiled:

#include"18f2680.h"
#include <can-18xxx8.c>

#fuses H4, NOLVP, NOMCLR, BROWNOUT, BORV43, NOWDT,NOPBADEN, PROTECT, CPB, WRTC, EBTRB, EBTR, C ...

The compiler version is 3.224

And here is an LED loop I wrote to debug some code in another project. So hopefully you meant something like this:

#define LED_Debug PIN_A5

while(1& ...

Update: I tried the NOFCMEN fuse anyways and disconnected the clock circuit. My board, however, still ran. :confused:

Thanks for your reply! I double checked my code and the reason I didn't use NOFCMEN is because when I check the configuration bits in MPLAB, the fail-safe is disabled by default.

Does the chi ...

I am currently developing using a PIC18F2680 and I wanted to increase the clock speed via an external crystal. I fabricated the external crystal circuit according to the datasheet with (2)15pf capaci ...