i did see your original post (remember you the sender don't normally see you
own posts) unless you set repo.

my only guess would point to your programmer, maybe if you tried to
reprogram the chips with the same data on a good production programmer the
chips might work. if this fails i would contact microchip with the model
number and date codes from the chips and see if there have been abnormal
failures reported from the same batch.

michael

-----Original Message-----
From: Tobias <tobias@EUNET.NO>
To: PICLIST@MITVMA.MIT.EDU <PICLIST@MITVMA.MIT.EDU>
Date: Wednesday, June 03, 1998 5:40 PM
Subject: 2. try! 12c508 prog. problems!


>Hello,
>
>After almost 24 hours my message has not appered, so I resend it:
>
>
>Hello all,
>
>I have some problems programming pic12c508 DIL chips. From one tube (60
>pcs), 18 didnt work after programming, thats 30%, and I have no idea what
>could be wrong.
>
>I have programmed all in same way, with same source code, and on same PC...
>I am using win3.11, picstart plus programmer and mplab, all chips are
>programmed ok. I suspect the internal osc. to be the problem (Have not made
>any tests), all chips are programmed with internal masterclear and int.
>osc. (source uses int. osc.)
>
>Anybody have had the same problem ????
>What could be wrong here..
>
>
>best regards,
>tobias