Hello friends,

currently i'm entering the wonderful world of PIC. For the beginning,
i just want to start with a simple '84 programmer and a proto-board.
Now ZIF sockets for 18 pins are very difficult to get and they are very
expensive. So i want to use a in circuit programmer using the serial
mode. From the archive i got some advices, to disable the oscillator (in
my case a 4Mhz crystal) and to set a resitor between Vdd and Vpp.

Now to the difficult part: To aviod an additional power supply i want to
use the design of a RS232-attached programmer. Has someone experience
with this design and in circuit programming?

Thanks in advance.

  Gerrit

--
Dipl.-Ing. Gerrit Gehnen
gehnen@hni.uni-paderborn.de
Heinz Nixdorf Institut
Rechnerintegrierte Produktion
Uni-GH Paderborn
Tel. +49/5251/60-6262 Fax. +49/5251/60-6268       ...und das war's auch
schon