[volt-nuts] 3458A NVRAM
phk at phk.freebsd.dk
Tue Dec 19 08:32:44 EST 2017
In message <email@example.com>, "David C. Partridge" writes:
>I'm looking at the A5 board in my 3458A.
>The DS1220Y and the two DS1230Y NVRAMs have 1997 dates, so should likely be
>replaced. I *think* the Ramtron FM1608-120-P is a direct "drop-in"
>replacement in this application for the DS1230Y. Is that right? If so I'll
>get some in from eBay.
Make sure to read out a backup copy of the NVRAM via GPIP before you start
desoldering the CALRAM, there seems to be about 25% chance that it looses
contents during desoldering.
See the function "nvram" here for details:
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
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