Re: A89: Detecting the ROM version

To: assembly-89@lists.ticalc.org
Subject: Re: A89: Detecting the ROM version
From: KeysDezes@aol.com
Date: Wed, 29 Dec 1999 22:34:15 EST
Reply-To: assembly-89@lists.ticalc.org

Here's the method I found:

_main:
    move.l  $300000,d0
    cmp.l   #$4E56FFCC,d0
    beq v1_00_rom
    cmp.l   #$77044EB9,d0
    beq v1_05_rom
    bra other_rom

v1_00_rom:
    move.b  #$00,d0
    bra found_rom

v1_05_rom:
    move.b  #$01,d0
    bra found_rom

other_rom:
    bra err

found_rom
    move.b  d0,rom_ver
    bra start

I don't know how to recognize 2.03; this just goes to err if it isn't 1.00 or 
1.05.  At the present time, you could just assume that it's 2.03... Start the 
main program at start.  I got this one from David Hart.

                                            Grant Elliott
                                            <A 
HREF="http://www.crosswinds.net/~proganon">Programmers Anonymous</A>

In a message dated 12/29/99 10:27:46 PM Eastern Standard Time, 
lexlugger@dethstar.de writes:

> Does anyone know how I can detect the ROM version. For the next version of
>  LexOS it is important that I can detect the current ROM version in order to
>  provide the correct RAM addresses. Obvoiusly I cannot use DoorsOS to get 
the
>  correct ROM version.

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