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From: lsr@apple.UUCP (Larry Rosenstein)
Newsgroups: comp.sys.mac
Subject: Re: Multi-tasking Finder (finally)
Message-ID: <1541@apple.UUCP>
Date: Wed, 19-Aug-87 20:22:06 EDT
Article-I.D.: apple.1541
Posted: Wed Aug 19 20:22:06 1987
Date-Received: Sat, 22-Aug-87 07:22:05 EDT
References: <1659@leadsv.UUCP> <1478@apple.UUCP> <1584@watcgl.waterloo.edu>
Reply-To: lsr@apple.UUCP (Larry Rosenstein)
Organization: Advanced Technology Group, Apple Computer
Lines: 35
Keywords: MacWorld Finder announcement

In article <1584@watcgl.waterloo.edu> kdmoen@watcgl.waterloo.edu (Doug Moen) writes:
>
>Does MultiFinder load fonts and da's into the system folder dynamically,
>as needed, and purge them as needed, or does it try to load every font and
>da into memory at once?  I have a 1Mb MacPlus, with about 800K worth of
>fonts and desk accessories in my system folder.  If the latter is true,
>then I am afraid that MultiFinder is useless to me, unless I am prepared
>to purchase a memory upgrade, or live with a completely stripped system
>file.

It only loads the resources as you use them.  Basically, resources that come
out of the System file are loaded in the System Heap, rather than the
Application Heap.

The System Heap under Multifinder is expandable, because application are
loaded towards the other end of memory as much as possible.  So if you start
opening DAs, the System Heap will start growing; as you close them, it will
shrink again.  (The about box in the Finder shows the current memory usage;
as you open and close DAs you can see the size of the System memory grow and
shrink.) 

The point I made before about the number of DAs, is that the System resource
map has to be loaded in the System Heap as well, so every DA and font
requires additional map space.  For example, the names of resources are in
the resource map.

-- 
Larry Rosenstein

Object Specialist
Apple Computer

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