While attempting to program a 12c508 which has already been programmed, I get the same error, 'Code programming error at 0091'. If Vpp is the problem, shouldnt it show up at 0000? I can reprogram the same orignal code with no problems. Thanks, Kevin R. ----- Original Message ----- From: "Wade Carpenter" To: Sent: Saturday, August 25, 2001 11:06 PM Subject: Re: [pic]: what does code error at 0000 mean? > Code error at 0000 means it is unable to modify the flash. It tries to > write the first byte, verifies, and the verify fails. > > I'm fairly new to this as well, but here's what i think it might be: > > Are you using Low-Voltage programming or standard? > > If you are using low-voltage programming, maybe your RB3 pin and VPP are > going high at the wrong times / in the wrong sequence? > > If you are using standard programming, check that your VPP is actually in > spec while you are trying to write to the chip. > > Also, is there any chance code protection was enabled? This could cause the > error as well. > > - Wade > ----- Original Message ----- > From: "rad0" > To: > Sent: Friday, August 24, 2001 9:12 PM > Subject: [pic]: what does code error at 0000 mean? > > > > hello, > > > > trying to program a 16F877 using the EPIC programmer, > > > > I keep getting this message, 'code erroe at location 0000' what > > does this mean? it will read and verify but the blink program > > example will not program..... > > > > I have the configuration set as follows > > > > XT > > off > > per up > > burn out > > flash > > > > > > thanks for your help > > > > -- > > http://www.piclist.com hint: PICList Posts must start with ONE topic: > > [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads > > > > > > -- > http://www.piclist.com hint: The list server can filter out subtopics > (like ads or off topics) for you. See http://www.piclist.com/#topics > > > -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics