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Article #28892

Ultimate in Pexec? Clarification.

#28892
From: Neil Forsyth
Date: Tue, 13 Oct 1987 10:49
35 lines
2094 bytes
With reference to my Ultimate in Pexec problem:

I probably didn't make myself clear about how I wanted to execute the program.
I want to double click on a loader program that will load the main program,
relocate it, restore the default system vectors and memory move it if required.

Also I don't want to know what the vectors are now but what the system would
like them to be. Event driven software invariably grabs vectors and bombs this
weird program.

In effect how do I give a program a boot-up like environment without the boot?

I guess I always go for the impossible.

Speaking of which:
Neochrome uses screen interrupts to get more colours on the screen & The Pawn
(Magnetic Scrolls Graphic Adventure) uses them to mix low and medium resolution
modes on the screen. I have done both but would like to use this technique to
create segmented video ram ie. Non continuous video RAM. Anyone got any ideas?

Neil Forsyth

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 Neil Forsyth                           JANET:  neil@uk.ac.hw.cs
 Dept. of Computer Science              ARPA:   neil@cs.hw.ac.uk
 Heriot-Watt University                 UUCP:   ..!ukc!cs.hw.ac.uk!neil
 Edinburgh
 Scotland
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Path: arc1-ca.pugleaf.net!utzoo!mnetor!uunet!mcvax!ukc!its63b!hwcs!neil
From: neil@cs.hw.ac.uk (Neil Forsyth)
Newsgroups: comp.sys.atari.st
Subject: Ultimate in Pexec? Clarification.
Message-ID: <1471@brahma.cs.hw.ac.uk>
Date: Tue, 13-Oct-87 05:49:09 EST
Article-I.D.: brahma.1471
Posted: Tue Oct 13 05:49:09 1987
Date-Received: Sun, 25-Oct-87 22:02:58 EST
Organization: Computer Science, Heriot-Watt U., Scotland
Lines: 35
Keywords: Chasing dreams?