Then you're left with Paul's other questions ...Along with ...Does your chip program without error?
What configs did you set?
Are you using a 6mhz crystal?
Is the oscillator config set to HS or H4? (16C745 doesn't have XT mode)
What size capacitors are on the crystal? (normally 22pf)
Is it a valid crystal, and is it actually oscillating?
Is there a pull-up resistor on MCLR?
Do you have 5V to VDD?
Are both VSS pins connected to ground?
Sorry for the basic questions but, it doesn't matter how good the program is, if the hardware isn't running.
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