IBM LPFK reverse engineering

[Scanning]

Philip,

Could you execute a small loop in RAM that iterates the flash and pukes the
code byte by byte onto the serial bus ?

/ steven

> Philip Pemberton wrote:
> > I don't think there's much that can be done with the LPFK without
> > desoldering the 8051 chip and reading out the program. Catch is, the
> > chip has probably had its encryption table programmed, and probably the
> > lock bits as well...
>
> I was right.
> The 8051 has both lock bits programmed. Zero activity in program mode, all
> outputs Hi-Z.
>
> :(
>
> Any experienced reverse engineers in the audience, or IBM collectors with
> information / drivers / docs for the LPFK?
>
> Thanks,
> --
> Phil.