At 09:53 AM 10/13/99 -0400, you wrote:
>>Another wrinkle: I was hoping to use the same cable for a 16C774
>>(whenever I can get my hands on one), but on that chip the 2 pairs are
>>different, one pair is analog Vdd and Vss.
>
>I have treat them as AVdd and AVss anyway.
>
>No, I don't believe they are connected internally.
>
>Yes, we changed a Parallax programmer to only put 5V on the line and
>modified it to work on RB.3 in LVP mode - it works.  We are planning on
>using this to burn already-installed equipment in a TV set (www.icommsys.com).
>
>Andy
>

Interesting... I tried yesterday to use the parallax programmer to program
a 16f876 in LVP mode.  I jumpered the following connections from the
programmer : Vdd, Vss, PGC, PGD, and tied the program 'active' pin and Mclr
to 5V.  My programming software claimed there was no part there.  As a
result of our rather narrow design cycle, I have put fixing this off to the
debug phase and any changes for the 2nd turn of the board.  Are there other
pins I need to connect for the parallax programmer to recognize the part?
I'm considering just using some sort of clamp or bed of nails type thing to
go directly onto all pins of the part for our prototypes.  Eventually the
whole circuit will be potted, so I have attempted to bring the appropriate
pins out.

Is there some 'Gotcha!' that I'm not considering for LVP mode?

Thanks.

-Erik Reikes