Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!rutgers!apple!oliveb!felix!dhw68k!thecloud
From: thecloud@dhw68k.cts.com (Ken McLeod)
Newsgroups: comp.sys.mac
Subject: Re: Mac 128K Roms
Keywords: rom, 128K
Message-ID: <20567@dhw68k.cts.com>
Date: 4 Mar 89 11:50:38 GMT
References: <499@hippo.UUCP>
Reply-To: thecloud@dhw68k.cts.com.cts.com (Ken McLeod)
Organization: Wolfskill & Dowling residence; Anaheim, CA (USA)
Lines: 32

In article <499@hippo.UUCP> michael@hippo.UUCP (Michael Hodgkins) writes:
>I just upgraded a 512K Mac to a 512KE, ie., an 800K internal drive
>and 128K Roms.  I keep on hearing about two different versions of
>the 128K Roms that were used in the Mac+.  What was the difference
>between these Roms?  How do you tell which of the 128K Roms one has
>without opening the Mac?  If you don't have the "better" version of
>the 128K Rom is there any provision for having this upgraded and, if
>so, who pays?  Thanks.

 1) There were actually FOUR different versions of the Mac+ ROM, not 2.
    According to various sources (including the infamous Tech Note on
    this subject), they are:

    128K (original) - "Lonely Hearts"   * problem booting w/SCSI devices
    128K revision 1 - "Lonely Hearse"   * rare; in very few machines
    128K revision 2 - "Lonely Heifer"   * most beige Pluses have these
    128K revision 3 - "Loud Harmonicas" * current; platinum Pluses have these

 2) You can use the MacEnvy cdev to determine which revision of the
    ROM is in your machine. A debugger and a copy of the "Mac Plus ROMs"
    Tech Note will tell you the same thing.

 3) If you have a ROM prior to Lonely Heifer, there is a provision for
    getting it upgraded free. Unfortunately, I don't remember the service
    program number, although I believe it was posted here quite recently.

-ken
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