MCUmall EPROM BIOS Chip Burner Forum
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 How to read protected code ?

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T O P I C    R E V I E W
dipark Posted - 01/06/2006 : 20:26:34
Hi all,
I am new to pic programming.
I have installed TOP 2005 yesterday.

I worked several pic mcus with successful result.
But I have a problem with code protected mcu( I think it may be protected).

It is 16F84A, and programmed code is a simple electronic keyer for HAM made by one of ham friends who is not reachable now.
The probelem is,
It has a side tone output of 1000 Hz, and it is too high frequency for my use. So I want to change it to 500 or 600 Hz.
I tried to read that mcu on top 2005.
But the read data is only 00 or FF, meaning no data read.

If I press [read config] button, the return shows all check box is checked in [config] window box.

How can I read the program source and data from this mcu ?

I will make some code changes to fit my taste and I will use it for only my personal use.
So any help will be greatly aprreciated.

Dongil


Dongil Park, M.D.
1   L A T E S T    R E P L I E S    (Newest First)
ZLM Posted - 01/08/2006 : 18:56:13
No way to read the code on the chip if it is been protected.
In most of comercial product, they just want to protect their copy right.

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