Esteban Traid wrote:
>
> Hi,
> I have a 16C73B I was playing with for some time, but now when I try to
> program it and read it back it comes as all 00.
> Any Ideas on what this can be?
> May it be that I have (by error) set the code protection on? How would the
> chip read if I had done so?
> Any other ideas?
> Thanks,
>
> Esteban.

It sounds like you have accidently code protected the device.

It will read 0000's when code protected.

--
Best regards

Tony

http://www.picnpoke.com
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