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Path: utzoo!linus!gatech!amdcad!sorensen
From: sorensen@amdcad.UUCP (Tim Olson)
Newsgroups: net.micro.apple
Subject: Re: Re: Booting ProDOS on an APPLE ][+
Message-ID: <7319@amdcad.UUCP>
Date: Tue, 10-Dec-85 19:18:42 EST
Article-I.D.: amdcad.7319
Posted: Tue Dec 10 19:18:42 1985
Date-Received: Wed, 11-Dec-85 21:58:53 EST
References: <1648@decwrl.UUCP>
Organization: AMDCAD, Sunnyvale, CA
Lines: 22
Summary: check for "APPLE ]["

|| In the PROM, my version of ProDos 1.0.1 looks for the words
|| "Apple ][", and in the disk drive it looks for a bit pattern in the
|| drive controller card to make sure it is an Apple card.
   
| Dunno about the disk card check, as mine is an Apple.  But the test for 
| modified ROMs is indeed probably restricted to a test for the wprd "APPLE" in
| the right place; my motherboard's ROMs have been modified to eliminate the
| lowercase foldover.  The first pass I made had "APPLE ][" changed, and ProDOS
| wouldn't boot.  I changed that text back, and ProDOS came up. 
| 
| Cheers,
| Dick Binder   (The Stainless Steel Rat)

	Except that ProDOS boots on my Apple ][ (no '+'), which does not
contain the autostart ROM with the "APPLE ][" banner.  It does know that
my machine is a ][ instead of a ][+, so the check may just be to see what
type of apple it is booting on (][, ][+, //e, //c, ...) which all have
differences in their ROMs.

	Tim Olson
	Advanced Micro Devices
	inhp4!amdcad!sorensen