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From: jgreco@archimedes.math.uwm.edu (Joe Greco)
Newsgroups: comp.sys.cbm
Subject: Re: 1764 -> 2megs+
Message-ID: <2968@uwm.edu>
Date: 20 Mar 90 05:56:16 GMT
References: <1990Mar20.053409.5057@sun.soe.clarkson.edu>
Sender: news@uwm.edu
Organization: University of Wisconsin, Milwaukee - Department of Mathematics
Lines: 21

In article <1990Mar20.053409.5057@sun.soe.clarkson.edu> shikascs@clutx.clarkson.edu (Glo) writes:
> o Does anyone know how the 1764 can be expanded to 2megs or more?

No, but I am seeking enlightenment in this area myself.  I would hazard a
guess that the 2meg limit is a limitation on how many RAM chips can be put
on the 17xx PCB rather than a limitation of the technique...

> o What is the directory limit on a 1764 using the latest version of RAMDOS?
>    (number of entires per REU)

Last time I tried, it was well in the thousands (RAMDOS 3.2, which has been
superseded).  Try it:
for a=1 to 999999:open 2,31,2,"0:file"+stR(a)+",s,w":close2:print a:next
and notice that things slow down as there are more entries.

I believe the ultimate limit would probably be 2^16 entries, although
I could be wrong.  I believe it is safe to say that this is not a point
that needs to be considered for most applications  :-)  Seems to be more
of a function of available RAM.

... Joe