Re: [Linux-7110-psion] SA1100 driver

[Matthew Lewis/M. <Mat...@mo...>]

> I've commented before that the Psions seem to have fairly good
> clocks - it is one of their good features, and perhaps one reason
> that they are relatively expensive.  I gather that the time of most
> laptops drifts fairly significantly.

The Series5 achieved this accuracy by calibrating each machine in the
factory and writing the information to the EEPROM.  Epoc read this and
adjusted the clock as required.

The netBook did the same thing, and although I don't know for sure, I
would be astonished if the 5mx didn't do exactly the same thing too.

The S5 EEPROM also included initial touch-screen calibration data, and
IIRC, language/keyboard flags (for machines with multi-locale ROMs -
not sure if this was actually used in practice).

-Matthew.