On Sun, 7 Jun 1998, Tony Duell wrote:
Does anybody know anything about these
"thrid-party Macintoshes?" I'm
familiar with the Outbound computers, I have never even heard of any
other early Mac clones. Any info?
How about Atari STs and Amigas running Macintosh emulators? :) :) :)
Wasn't there a thing called a 'Magic Sack' or something that was a cartridge
for the ST which you put the ROMs from a Mac into. One version had a Mac
disk controller (IWM) chip in it as well, I think.
A-Max on the Amiga had a similar arrangement. The disk controller was
necessary for using the multi-speed drives (which seems to be just about
the only format an Amiga can't read).
Problem was, it needed genuine Apple Mac ROMs. The
only way to get those,
at least at first, was to strip them out of a Mac.
I think actual ROMs were used because of legal issues, not because they
were actually needed. At least on the Amiga, we could use a ROM image
from disk instead.
One funky thing about A-Max running on an Amiga 1000 was that it was able
(by use of a special bootblock on the A-Max disk) to overwrite the
Kickstart in the Writable Control Store. This meant that my 512K A1000
had as much memory available as a Mac 512K, even with the 128K ROM and
emulator loaded. And there was also a RAM disk available at the same
time, of about 128K.
The BAD thing about (at least that version of) A-Max was that it took
over the entire system. This is obviously necessary if Kickstart is going
to be removed, but even when this wasn't done, the machine essentially
became a Macintosh. AmigaOS was no longer running.
I think this may have been fixed in later versions. Other, more recent,
emulators allow both operating systems to coexist quite nicely.
Oh, BTW, the experience I had with A-Max was with a pirate version, so
it's possible the commercial version couldn't work without actual ROMs. I
hope I can be forgiven that transgression as I was still a teenager at the
time. :)
I think MagicSac on the Atari was on the market a year or two earlier than
A-Max on the Amiga.
-tony
Doug Spence
ds_spenc(a)alcor.concordia.ca
http://alcor.concordia.ca/~ds_spenc/