As I said I don't have a NOPP programmer but the P16PRO and to program my
PIC16F84's in circuit I need to attach my oscilloscope probes to the
programmming clock and data pins, this would be a few tens of picoFarads I
guess. If I don't do this the extra cable length from my programmer to the
SMD circuit is too much and I get the same error (except the PICALL.exe
application issues the error)

My extra cable length is only 10cm but it's enough to stop it working.

I have yet to fully investigate this and suspect this will be cured with the
addition of a 50->100pF capacitor somewhere? Something to simulate the scope
probe loading.

I don't know if that helps but it's a fine line between programming a PIC
and not in my case and I've found this simple technique does work for me. I
have no problems with DIL chips programmed within the ZIF socket; only when
I program my SMD's on a seperate PCB to my problems start.

Someone else may be able to explain exactly why but I think it's adjusting
the timing of the signals and maybe filtering some noise off to get it to
work.

Rgds

Pete

> -----Original Message-----
> From: ext mervin [mailto:mervin@MIDSOUTH.RR.COM]
> Sent: Tuesday, February 20, 2001 2:42 PM
> To: PICLIST@MITVMA.MIT.EDU
> Subject: Re: [PIC] 16f84-10p or 04p
>
>
> Peter
> Do you mean you had to increase the size of the c1 & c2 0.1
> mfd cap or add
> another?
> Did you originally get the same error message?
> "Error: expecting 0x000, found 0x3fff."

--
http://www.piclist.com hint: To leave the PICList
mailto:piclist-unsubscribe-request@mitvma.mit.edu