Thanks Alan, I got it working.  Used your info with only a slight mod.
Now I have to get my circuit working without unplugging the
programmer.

Andre, I am using the PS+ only for proto's.  Onother company will do
the production.  Thanks for your feedback

Regards

Chris A

----- Original Message -----
From: "Alan Gorham" <alan@MICROTIMA.CO.UK>
To: <PICLIST@MITVMA.MIT.EDU>
Sent: Wednesday, 13 February, 2002 18:12 PM
Subject: Re: [PIC]: ICSP


>
>Would it be possible to use the PS+ with an adapter cable to
programme
>the SOIC's in-circuit, and if so, could somebody please give me some
>pointers on how to go about it?
>
>TYIA
>
>Regards
>
>Chris Albrecht
>

Hi Chris
I use the PS+ and an adapter to program a 16F874.
One or two things I picked up from the list are:

a) Ensure you have the latest version of MPLAB and also the PS+
firmware.
     I had problems with MPLAB v5.00 and PS+ v2.01 and had to upgrade
for
ICSP.

b) Refer to page 136 of the 16f87x manual for details of which I/O
pins will
be used for ICSP.
     Typically, RB6, RB7 are the serial data and clock pins and
/MCLR/Vpp
will have the programming
     voltage applied to it. You have to isolate the /MCLR pin from Vcc
when
in programming mode.
     Page 512 of the PIC midrange manual shows the connection you need
better than I can explain.

I use a 5-pin header in my application PCB to connect my ICSP lead to.

Hope this gives you a small start anyway!

Alan

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