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From: egisin@orchid.waterloo.edu (Eric Gisin)
Newsgroups: comp.sys.atari.st
Subject: Re: Atari ST, Mac emulator and TOPS network
Message-ID: <11801@orchid.waterloo.edu>
Date: Mon, 23-Nov-87 14:10:07 EST
Article-I.D.: orchid.11801
Posted: Mon Nov 23 14:10:07 1987
Date-Received: Thu, 26-Nov-87 21:13:43 EST
References: <441*woslyng@arc.cdn> <2698@sphinx.uchicago.edu> <416@auvax.UUCP>
Organization: U of Waterloo, Ontario
Lines: 9

In the reference article, Ross Alexander writes about appletalk and the ST's 68901.

I don't think it would be feasible.  Appletalk has a bit rate of 230K,
or about 80K characters per second.
The Mac's serial controller is interrupt driven, but has a 3 byte silo.

The 68901 has a single byte buffer, and would have process interrupts in 12 useconds,
or do polled IO.  It would also have to do bit stuffing on the fly to find flag
sequences. The 68000 is not quite fast enough for all that.