The O2 rtc is a Dallas Semiconducter part (DS1687-5), it can be obtained
from www.maxim-ic.com .  The 5 indicates 5 volt, they also have a 3 in
(3 volt of course) the same form.

At one point I had pin-outs and schem. but not sure where that is now. 
Never had a chip reader though...

I fried one and had to replace it.  I have extras if anyone ends up
frying theirs...

jg


On Thu, 2003-01-09 at 05:57, Antti Kantee wrote:
> On Wed Jan 08 2003 at 15:57:35 +0900, Christopher SEKIYA wrote:
> > According to the DS17287 docs, the century byte is located in bank 1, offset
> > 0x48.  Probably should initialize the clock to bank 1 and leave it there,
> > possibly split off ds17287-specific clock get/set routines from the stock
> > mcclock routines as there's no century provision in the base code.
> 
> Are you sure it's a ds17287? I remember the IRIX headers hint something
> to that direction, but at least on my O2 the top of chip says: DS1678-5.
> (the physical top, that is). Feel free to peek inside of yours and see
> what it ate.
> 
> Of course it could be that these chips are compatible enough, but I
> don't have time to check that right now.
> 
>   - antti
> 
> -- 
> Antti Kantee <pooka@iki.fi>                     Of course he runs NetBSD
> http://www.iki.fi/pooka/                          http://www.NetBSD.org/
>                  "connoisseurs do not chill their malts."
> 
>