Corne

     I have had the same problem. It seems that there is a bug in the MPLAB
     and PICSTART Plus software such that the code protect register is
     occasionally blown in error. When this happens the chip is no longer
     useable. Because this bug is known by MicroChip, you may be able to
     shame them into replacing the affected chips. Lots of luck.

     Joe


______________________________ Reply Separator _________________________________
Subject: Erasing PIC 14000
Author:  pic microcontroller discussion list <PICLIST@MITVMA.MIT.EDU> at SMTP
Date:    3/17/97 2:49 AM


Hi Dudes
I am having a problem erasing my Pic 14000 widowed device.
I have two of them and both doesn't want to be erased by the
UV light.I have programmed both of them at most ten times,if that much.
Now the MPLAB software just tells me the device is not clean, and I
have been placing them under the light for about 15mins or longer.
It doesn't get damaged that quiqly ,even when you leve it in the eraser
too long??Or does it ?

Thanks
Corne