24 Sep
2023
24 Sep
'23
9:36 a.m.
There are solutions to the dying DS chips. I have seen replacement with
newer ones (but sometimes those have old cells too), surgery to replace the
internal cell https://www.youtube.com/watch?v=kZJDlNoJk7M, and replacement
with a clone https://www.tindie.com/search/?q=dallas.
However the critical thing would be to replace the data with something that
doesn't hang on booting (perhaps even incorrect information from another
unit would be close).
On Sun, Sep 24, 2023 at 5:23 PM erik--- via cctalk <cctalk(a)classiccmp.org>
wrote:
Just checked the datasheets: The NVRAMs of the
UltraBooks I know of are
the DS1643 and the DS1553. Both should be similar enough to be read/write
by any reader that supports the DS1643 or the DS1553. Of course I'd offer
creating an modified Arduino doing the task, to test it and to supply it to
anyone who is willing to dump his NVRAM!!!