[volt-nuts] HP-3458A NVRAM

[Randy Evans]

Actually, it could make a difference depending on when the processor tries
to access the memory on start up.  The Maxim app note mentions that many
legacy programs designed for the DS1220Y may not work with the DS122AD,
hence the reason for the question.  I really would like to hear from
someone that has actually successfully replaced the DS1220Y with the
DS1220AD, since the DS1220Y is no longer avaialble..

On Fri, Nov 10, 2017 at 5:20 AM, Poul-Henning Kamp <phk at phk.freebsd.dk>
wrote:

> --------
> In message <CANwu9JbdybQPrSOrQn6xRM0M5YpaL2t40i33+bZMJcDJjO=fqg at mail.
> gmail.com>
> , Randy Evans writes:
>
> >Does anyone know if the DS1220AD will work as a direct replacement for
> >the DS1220Y
> >NVRAM chip currently installed in the HP-3458A?  There is a timing
> >difference between the two devices, as explained in Maxim AN 202.
>
> I don't think that difference will make any difference.
>
>
> --
> Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
> phk at FreeBSD.ORG         | TCP/IP since RFC 956
> FreeBSD committer       | BSD since 4.3-tahoe
> Never attribute to malice what can adequately be explained by incompetence.
>