[comp.sys.mac] ROM Version & Machine Type

jinsley@mntgfx.MENTOR.COM (Jim Insley) (07/08/87)

I have a few question reguarding the Mac's Rom version and
the machine type that the Toolbox call ENVIRONS returns.

In Inside Mac IV, it says that the ROM version for the old
macs is 105, and that the 128K ROM's have a version number
of 117.  On my Mac SE, I get a version number of 118 - 
(256K ROM's version number?).  First of all can I use the
following test to determine the Rom type:

  ROM version < 117        64K ROM   old Mac 128K & 512K
  ROM version = 117       128K ROM   Mac Plus and 512K Enh.
  ROM version = 118       256K ROM   Mac SE or Mac II

I also wish to determine what kind of Mac that is being
used.  IM IV says that the machine number returned from
ENVIRONS returns:

  machine = 0   -  Mac XL
  machine = 1   -  Mac 128K, 512K, 512E, Mac Plus

My Mac SE return '3'.  What does a Mac II return?
Are there any other ways to determine the machine type
or determine the specific machine?

Maybe this is documented in Inside Mac V  -  Is this
available yet, or when will it be available?

Any help is appreciated.

ALSO - Does anybody have a list of resources that can
be removed from System 4.1 so that is still runs on an
SE, but without all of the Mac II stuff in it?
The System is absolutely HUGE!!!

Tom Carstensen