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Article View: alt.sys.pdp8
Article #45

Re: Another OS/8 trivia question

#45
From: Charles Lasner
Date: Tue, 13 Oct 1992 19:47
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In article <1992Oct13.171324.3141@pony.Ingres.COM> kerry@Ingres.COM (Kerry Kurasaki) writes:

>
>And the bonus question:
>
>	What should the value be at that location and what is the
>	significance of that value?
>
>Gee, you guys ARE good!

If bit[0] of 07777 is a one, batch is running.  If you want to interact with
it, the source of the BAT handler is useful info for this.  Look in the PDP-8
archives for it on ftp.telebit.com where it is or will be soon.

Bits[6-8] are the software core size where 000 and 111 both mean 32K is
available because they both mean the highest field available is 7.

Bits[3-4] are the date base group year bits currently, where each increment
is 8 years starting at 1970-77 going to 1994-2001.  Since it's getting
close to the end of the world, I want a definition for all the bits so I
can at least double the lifetime, if not quadruple it.  So please find me
a bit or two, preferably in that word.  Anyone know what all of the other
6 bits mean?

cjl
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Message-ID: <1992Oct13.194705.6091@news.columbia.edu>
Path: arc1-ca.pugleaf.net!sparky!uunet!destroyer!sol.ctr.columbia.edu!news.columbia.edu!watsun.cc.columbia.edu!lasner
References: <1992Oct12.182840.22117@pony.Ingres.COM> <1992Oct13.032611.7348@tigger.jvnc.net> <1992Oct13.171324.3141@pony.Ingres.COM>

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From: lasner@watsun.cc.columbia.edu (Charles Lasner)
Subject: Re: Another OS/8 trivia question
Message-ID: <1992Oct13.194705.6091@news.columbia.edu>
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References: <1992Oct12.182840.22117@pony.Ingres.COM> <1992Oct13.032611.7348@tigger.jvnc.net> <1992Oct13.171324.3141@pony.Ingres.COM>
Date: Tue, 13 Oct 1992 19:47:05 GMT
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