[time-nuts] HP8568B firware eproms anyone ?

Rick Karlquist richard at karlquist.com
Wed Oct 18 18:21:27 EDT 2006

I work for Agilent.  In my lab I have both an 8568B and an
8566B.  How would I read out the contents of the eproms?
I don't know much about eproms.

I looked up that part number; it is an AMD27C256-200DC.
There are a bunch of reliability reports on it, so that
sort of confirms that yours may likely have failed.

Rick Karlquist

Poul-Henning Kamp wrote:
> My HP8568B has started to do weird things, and as far as I can find
> out, the A15U37 Eprom is hosed.
> According to the label, the HP partno for the contents is 85660-80080
> The chip has a HP partno of 1818-3329 but looks like a regular
> AMD27256 Eprom to me.
> Anybody out there with a 8568B who are also able to email me the
> contents of the four eproms on A15 ?
> I'm not sure if the firmware of the 8566B is different from the 8568B,
> anyone know ?
> I think this is the second report of eprom failures I recall on the
> list, should we start to make a EEPROM library for futures sake ?
> Poul-Henning
> --
> Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
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