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From: aiv@euraiv1.UUCP (Eelco van Asperen)
Newsgroups: comp.sys.att
Subject: accessing the clock/calendar chip on PC6300
Message-ID: <590@euraiv1.UUCP>
Date: Fri, 4-Sep-87 08:24:59 EDT
Article-I.D.: euraiv1.590
Posted: Fri Sep  4 08:24:59 1987
Date-Received: Sun, 6-Sep-87 02:40:59 EDT
Organization: Erasmus University EF/AIV,Rotterdam,Netherlands
Lines: 17
Keywords: clock chip; ATT PC6300/Olivetti M24


Hi, I'm trying to access the real-time clock/calendar chip in the 
Olivetti M24 I use (aka. ATT PC6300) and I'm kinda puzzled on the
way years are handled. According to the Hardware Architecture Guide,
the chip does _not_ know about years; this is consistent with the
results of a program I wrote to read the chip's ports. So: *how* 
does MS-DOS remember it's 1987 ?  Is there some undocumented port 
they use ?

Eelco van Asperen.

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