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From: pbrody@udenva.UUCP (Paul Brody )
Newsgroups: comp.sys.amiga
Subject: Programming questions
Message-ID: <4119@udenva.UUCP>
Date: Fri, 21-Aug-87 16:04:40 EDT
Article-I.D.: udenva.4119
Posted: Fri Aug 21 16:04:40 1987
Date-Received: Sun, 23-Aug-87 06:43:25 EDT
Organization: U of Denver
Lines: 40



	I am asking this question for a programmer friend of mine who is 
currently working on a new piece of software for the Amiga. He is having
some trouble with getting access to the KS1.2 protected ram.

Question:

Where, on the KS1.2 disk, is the code that writes to the memory, (F80000
being the believed location in memory) that write protects the KS1.2 ram ?

The purpose being to put some NOPS on the KS1.2 disk that will disable the
code and consequently leave the KS1.2 ram unprotected.

Question #2:

What is the purpose of the memory overlay bit on the 8520 chip ? When he
tries to use it he gets a Guru error of FF17, which is undocumented.

Any replies on either of these two questions would be GREATLY appreciated.
If there is sufficient interest in the topic I will summarize and post
replies.

Please send reples to:

pbrody@udenva
===============================================================================
||	The above is not representative of the opinions of the Universtiy    ||
||				of Denver				     ||
||									     ||
||	Paul Brody							     ||
||	pbrody@udenva							     ||
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===============================================================================
||	The above is not representative of the opinions of the Universtiy    ||
||				of Denver				     ||
||									     ||
||	Paul Brody							     ||
||	pbrody@udenva							     ||
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