Starting the real time clock on virgin systems
Eric W. Biederman
ebiederman at lnxi.com
Wed Dec 11 03:49:01 CET 2002
steven james <pyro at linuxlabs.com> writes:
> Greetings,
>
> if the init is what I think it is ( setting bit 5 in RTC index 0x0a, the
> divider), it should be the same for all RTC. The part that tends to differ
> is the PnP stuff. The index accesses from port 0x70-71 tend to stick to
> standards.
Detecting battery failure also tends to vary to the extent that
on some tyan motherboard via chipset systems the only way I have found
so far is a cmos checksum. The cmos clear jumper is actually a cmos
corrupt jumper on that board. On other boards cmos clear tends to set
a magic bit.
Eric
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