Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!tut.cis.ohio-state.edu!purdue!sage.cc.purdue.edu!aj0
From: aj0@sage.cc.purdue.edu (Eric Mulholland)
Newsgroups: comp.sys.apple
Subject: Re: IIgs Software Reboot
Message-ID: <3388@sage.cc.purdue.edu>
Date: 16 Dec 89 02:05:37 GMT
References: <1960244@mtsg.ubc.ca>
Reply-To: aj0@sage.cc.purdue.edu (Eric Mulholland)
Organization: Purdue University
Lines: 32

In article <1960244@mtsg.ubc.ca> Les_Ferch.@MTSG.UBC.CA writes:
>I completely agree.  The reason I was looking for reboot code is to write a
>program or programs that will automatically (and hopefully properly) switch
>my operating environment on my hard drive between plain ProDOS 8 and GS/OS.

[stuff on renaming files]

    A program called Smartboot 8/16 appeared in Nibble last summer.  I
don't remember which issue exactly though.  The program puts a special
boot block on the disk.  When the disk is booted, it checks the caps
lock key to see which postion it is in.  Depending on that, it will
either load PRODOS or SYSTEM/P8.  So just setting the caps key to the
operating system you want and rebooting, you get the operating system
of choice.  The article included three listings: hex dump, assembly
source and a basic program to install it (copy it onto block zero).
    I have it installed on my America Online disk so I can boot into
either version of the program.  Since the two versions use the same
data files, there is no problems.  Even though customer service say
this can NOT be done (according to a friend that called asking), I
HAVE been doing this for months now.  I perfer the look of the GSOS
version of the program but the games only work from the ProDOS 8 version.
    Having the source code to it, the caps lock test can be changed to
do whatever test you like (ex: calling a subroutine on a mindreader
card plugged into slot 8).  I typed in both listings just so I could
compare the two binaries to verify my typing skills.  After looking at
the source a bit, I see a few routines that can be shorter, but for
the moment, "it works," so why bother making changes (yet).
-- 
     ____
 Y_,_|[]|   Eric Mulholland
{|_|_|__|   aj0@sage.cc.purdue.edu
//oo--OO    ...!pur-ee!sage.cc!aj0