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From: rjnoe@ihlts.UUCP (Roger Noe)
Newsgroups: net.micro.hp
Subject: Re: HP-41 info needed
Message-ID: <530@ihlts.UUCP>
Date: Tue, 7-Aug-84 12:15:24 EDT
Article-I.D.: ihlts.530
Posted: Tue Aug  7 12:15:24 1984
Date-Received: Wed, 8-Aug-84 19:42:22 EDT
References: <165@dataio.UUCP>
Organization: AT&T Bell Labs, Naperville, IL
Lines: 21

The Extended Function/Memory module can indeed be used for storing programs.
Beyond this, you can add up to two Extended Memory modules (with the quad
memory module already in place this will fill up your four ports).  I have
forgotten just how much memory this would give you, but it's quite a lot
for a handheld computer.  Extended memory must be "swapped in" to main memory
(using Extended Functions) before programs contained there can be run.

Other options (besides the magnetic cards) include the digital cassette drive
which can store enormous amounts of data.  I think this might require use
of the HP-IL loop, but I'm not sure about that.  I have yet to fill up my
quad memory although I have at times used all four ports, what with the
Extended Functions/Memory module, the PPC ROM, and alternating between my
optical wand and application pacs.

There is no conflict between main memory (bascially what a HP-41CV starts with)
and Extended Memory.  I have used the Extended Functions module and I like it.
The documentation leaves something to be desired, however.
-- 
"It's only by NOT taking the human race seriously that I retain what
    fragments of my once considerable mental powers I still possess."
Roger Noe			ihnp4!ihlts!rjnoe