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Article #5362A Rad: using only 16 bit memory...
From: Dylan McNamee
Date: Thu, 20 Sep 1990 17:38
Date: Thu, 20 Sep 1990 17:38
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1426 bytes
I am about to bring the 32 bit memory in my system up to 4 megabytes. This makes me think of creative ways of using the 2 megs of 16 bit memory on my 2091 card. I'd prefer not to run code from the 16 bit memory, so the idea of a 16 bit RAD: seems natural. The static nature of RAD: makes it more handy for this than ram:. Here's a first cut at a scheme for doing this: 1) Allocate all of the 32 bit memory in the system. (Using the routines in MTest seems the easiest, although slow.) I guess this would be doable by checking the address returned for range in 32 bit memory space, and freeing it if it weren't. 2) Create a Rad: disk, which would allocate the 16 bit memory, since that is all that is around. 3) Free the 32 bit memory. This process would only need to be done at system turn on time, since after that, the memory is fixed in rad: Comments? Easier methods? Mistakes (will this indeed work?) dylan dylan@cs.washington.edu
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arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!usc!snorkelwacker!mit-eddie!uw-beaver!uw-june!dylanShow Full Headers
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!usc!snorkelwacker!mit-eddie!uw-beaver!uw-june!dylan From: dylan@cs.washington.edu (Dylan McNamee) Newsgroups: comp.sys.amiga.tech Subject: A Rad: using only 16 bit memory... Message-ID: <13089@june.cs.washington.edu> Date: 20 Sep 90 17:38:16 GMT Reply-To: dylan@june.cs.washington.edu (Dylan McNamee) Organization: University of Washington, Computer Science, Seattle Lines: 25