Just got the Picstart Plus Processor upgrade kit with the PIC18FXXXX 
flash processor, installed it and uploaded the latest firmware 42003. I 
expected that I could now program any old or new PIC with MPLAB.

Well a PIC16F877 worked OK, so did a PIC16F88 and the old PIC17C44 that 
the old firmware was stored in. Then I tried a PIC16F57 and Picstart 
refuses to program this chip.

If I read a new or erased chip it finds all zeros instead of 0FFh and 
says it is code protected. If I try to program it, the Picstart takes 
forever and then announces that all locations are zeros and the part is 
code protected. I turned off code protection in the config bits. It 
actually acts as if the chip weren't there. If I remove it the same 
events occur.

The PIC16F57 is a new part but MPLAB V6.60 says Picstart can program it.

I was happy to find it because it would replace the obselete PIC16C57 in 
an 11 year old instrument without any hardware or software changes. Now 
I'm back to square one. Anyone else having problems with the Picstart 
upgrade?

Eric Strauts

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