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@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!!! >
