Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sun-barr!ccut!wnoc-tyo-news!toumon!wucc!ytsuji
From: ytsuji@wucc.waseda.ac.jp (Y.Tsuji)
Newsgroups: comp.sys.atari.st
Subject: Re: Spectre GCR / ST Disks
Summary: Aladin v.3 cannot cope with GCR
Message-ID: <5486@wucc.waseda.ac.jp>
Date: 19 Apr 91 22:04:37 GMT
References: <1991Apr16.170332.6533@mgc.uucp>
Sender: news@wucc.waseda.ac.jp
Organization: The Centre for Informatics, WASEDA Univ.
Lines: 15

You are right in saying that without additional hardware ATARI ST
cannot emulate a MAC. So, without a GCR controller board, one can 
import MAC files either via 1.44MB disks or via serial line.
mc68010 is slightly better than mc68000 in that it can restart a
bus error cycle( access to non-existent address -- usually an I/O
address --, a bus error, subroutine call to an emulator, restart).
But if the I/O address or ROM address overlaps, mc68010 is not the
right chip and moreover MAC is now an mc68030 machine, which cannot
be emulated by machines lacking an MMU. Therefore, if I were you,
I should be waiting till ATARI TT with a MAC-II emulator on its VME board
will become affordable for poor people. The mc68030 is ideal for emulation
because it can cope with the address overlap (all the additional
hardware can have convenient addresses).

I do wish a SUN emulator for TT to appear soon.