MCUmall EPROM BIOS Chip Burner Forum
MCUmall EPROM BIOS Chip Burner Forum
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 Reading Problem

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T O P I C    R E V I E W
grawley Posted - 02/28/2007 : 18:15:12
I can read a PC file into the buffer. I can erase the chip. I can write the buffer to the chip, then erase the buffer and read the chip and see that the chip was written successfully.

I am trying to read a AT89C55WD with an unknown program. I can read the electronic ID. However, this chip and duplicate chips read empty. These chips operate in the circuit. How do I read the program?
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ZLM Posted - 03/03/2007 : 13:32:24
It seems the chip been set the lock bit.
If that is the case, then there is no way to read it out.

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