[rescue] Source for new IDPROM chips?

[Andrew Hoerter]

On 7/1/13, Barry Callahan <barryc at rjlsystems.com> wrote:

> The M48T59 series integrates an alarm and a watchdog into the chip --
> which the SUN machine doesn't need.
> Look into the M48T58, which is still a current line, and digikey has stock.

Interesting -- thanks for the reply.  I compared the datasheets, and
they do look almost identical.  I noticed that one pin on the '59
becomes a second chip enable line on the '58, but on the '59 that pin
is apparently supposed to be pulled high so maybe it's not a problem
(or could be hacked around, I suppose).  Have you actually substituted
a '58 with success?

thanks again,
-Andrew