Are you using any of the Analog pins? You must convert them to digital I/O
first with this code.

        BSF STATUS,RP0
        MOVLW 07H
        MOVWF 01FH
        BCF STATUS,RP0

Maybe this might help.

-Jim



>
>
>At 01:10 PM 6/9/99 +1000, you wrote:
>>Hi...
>>
>>I'm testing a project that uses a 16C74A. I've used the 16F84 quite a bit
>>but this is my first try using the 16C74 with a HS osc at 16Mhz.
>>
>>Problem:
>>I cant even get an led to flash. I know the code is correct. I set the osc
>>to HS.
>>
>>Question:
>>Are the two VDD and VSS pins connected internally???
>>I got 12ohms between the 2 Vss pins but several Mohms between the Vdd pins.
>>Is this correct??
>>Should I connect these pins externally???
>>Is there something else that could be causing the problem?
>>
>>Any help would be much appreciated. (the frustration's building)
>>
>>Thanks,
>>Stewart Pye
>>
>>
>Larry G. Nelson Sr.
>mailto:L.Nelson@ieee.org
>http://www.ultranet.com/~nr
>
Regards,

Jim Robertson
NEWFOUND ELECTRONICS
________________________________________
Email: newfound@pipeline.com.au
http://www.new-elect.com
MPLAB compatible PIC programmers.
________________________________________