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From: grr@cbmvax.cbm.UUCP (George Robbins)
Newsgroups: sci.electronics,comp.misc,comp.sys.cbm
Subject: Re: SmartWatctch Help
Message-ID: <1860@cbmvax.cbmvax.cbm.UUCP>
Date: Sun, 10-May-87 16:21:40 EDT
Article-I.D.: cbmvax.1860
Posted: Sun May 10 16:21:40 1987
Date-Received: Mon, 11-May-87 03:09:08 EDT
References: <849@killer.UUCP>
Reply-To: grr@cbmvax.UUCP (George Robbins)
Organization: Commodore Technology, West Chester, PA
Lines: 19
Keywords: Dallas Semiconductor SmartWatch C-128 6502
Xref: mnetor sci.electronics:688 comp.misc:499 comp.sys.cbm:430

In article <849@killer.UUCP> sentinel@killer.UUCP (The Sentinel) writes:
> 
>     Hello.  I recently picked up a Dallas Semiconductor SmartWatch, and
> installed it in my Commodore 128.  This is a "no-slot clock" which plugs
> into the board underneath a ROM, and is transparent until you need it.
> 
>     However, I have a problem.  It won't do anything.  No matter what I do
> I can't access it.

My understanding is that these devices require some ritual address sequence
to become activated.  You may need to write a machine language subroutine
to access the clock, since accessing from basic would involve other possible
ROM accesses.  Also check that the pin-out expected by the clock device is
compatible with the C128 ROM socket...

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