Path: utzoo!mnetor!uunet!cbmvax!grr
From: grr@cbmvax.UUCP (George Robbins)
Newsgroups: comp.sys.amiga.tech
Subject: Re: Idea
Message-ID: <3687@cbmvax.UUCP>
Date: 24 Apr 88 16:47:20 GMT
References: <8804231647.AA09390@jade.berkeley.edu>
Reply-To: grr@cbmvax.UUCP (George Robbins)
Organization: Commodore Technology, West Chester, PA
Lines: 19

In article <8804231647.AA09390@jade.berkeley.edu> SLMYQ@USU.BITNET writes:
> This most likely wouldn't work, but here goes...
> 
> The T.O.D. (Time Of Day) clocks in the 8520s on the Amiga aren't used, right?
> Would it be possible to hook up a battery and a little switching circuitry to
> one of the 8520s and use it's TOD clock as a battery backed clock?  Or would
> a RESET signal clear it?  Would it be at all practical?

Uh...no....

The TOD clocks *are* used, although they are used more a binary interval
counters than TOD clocks.  The 8520's are NMOS, not low-power CMOS, so
ignoreing other issues, it wouldn't be all that easy to provide battery
back up.

-- 
George Robbins - now working for,	uucp: {uunet|ihnp4|rutgers}!cbmvax!grr
but no way officially representing	arpa: cbmvax!grr@uunet.uu.net
Commodore, Engineering Department	fone: 215-431-9255 (only by moonlite)