MCUmall EPROM BIOS Chip Burner Forum
MCUmall EPROM BIOS Chip Burner Forum
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 Locked EPROM?
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DrFatz

4 Posts

Posted - 06/18/2008 :  05:27:40  Show Profile  Reply with Quote
I am trying to read a 27C256B. When I read the chip in everything says its working just fine. The software verifies the chip type and loads all of the information into a buffer and then opens up the data in a hex editor. The problem is all of the data comes up as 00. Is there a problem with my EPROM or is this because there is some kind of encryption on the chip?

Thanks for the help!
Reply #1

DrFatz

4 Posts

Posted - 06/18/2008 :  12:43:36  Show Profile  Reply with Quote
I don't want to erase it because it has information on it that I am trying to read. However, every time I read it I get all 00 which is odd and I am wondering if you can lock an EPROM.
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Reply #2

DrFatz

4 Posts

Posted - 06/20/2008 :  04:48:53  Show Profile  Reply with Quote
I managed to read another chip, so I am wondering if its simply damaged.
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