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Thread: Compiled HEX versus dumped HEX
www.piclist.com/techref/microchip/devices.htm?key=pic
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face BY : Albert Noah email (remove spam text)



Hello,

I have what will probably seem like a stupid question but here it goes:

I built a programmer (http://www.jdm.homepage.dk/newpics.htm) and programmed
a 16F84 with the PP.EXE program. The programmer programmed the chip and then
verified it successfully. (Or so the software says).

I did a read on the chip and had it dump to a file. Below are a few lines of
the original and the dumped hex file starting at line 1 of each.

Original Hex
:020000000528D1
:08000800052885008B01093079
:100010006600C23062000611031EE22864005830F8
:10002000B6209F20120803110310493A031D05282A

Saved Hex
:100000000528FF3FFF3FFF3F052885008B01093092
:100010006600C23062000611031EE22864005830F8
:10002000B6209F20120803110310493A031D05282A

The original hex lines 3 and 4 are the same as the saved hex lines 2 and 3
but the header? is different. Is this normal? If this is normal can I burn
the saved hex to a chip and it operate like the original hex?

The reason I ask is that I will be building this project this weekend but I
want to know if it is the chip or the circuit if I have problems.

I hate to bother you with such a simple question but I am new to pics and am
learning slowly.

Thanks to everyone for your tips and all the great information that comes
through the list.

Albert

<018a01bfc678$8e493200$1d010101@sdf.sdf> 7bit

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