Xref: utzoo comp.dcom.modems:4599 sci.electronics:8056
Path: utzoo!utgpu!attcan!uunet!intercon!amanda@intercon.com
From: amanda@intercon.com (Amanda Walker)
Newsgroups: comp.dcom.modems,sci.electronics
Subject: Re: SW56/ISDN for Macintoshes??
Message-ID: <1473@intercon.com>
Date: 1 Oct 89 20:31:09 GMT
References: <1989Sep29.114152.4344@ux1.cso.uiuc.edu> <2439@ucsfcca.ucsf.edu>
Sender: news@intercon.com
Reply-To: amanda@intercon.com (Amanda Walker)
Organization: InterCon Systems Corporation
Lines: 18

In article <2439@ucsfcca.ucsf.edu>, jst@cca.ucsf.edu (Joe Stong) writes:
> I'm curious whether they are
> "settable" to exactly 56K baud using the internal clocks.  The mac is
> capable of getting external clocking, possibly with some minor change
> (the people who do FastTalk AppleTalk do this)
> 
>  All you may need is a cable if you're using a 56K baud modem that can
> supply a clock signal.

Doing 57600 baud async is no problem with the standard Mac serial ports.
I'm not sure if you can get 57344, which would be exactly 56 * 1024.
57600 seems to be what most people mean by "56K baud", though, since it's
exactly 3 * 19200.  You should be able to run sync at up to 1mbps,
although you won't have much processor time left :-).

--
Amanda Walker
amanda@intercon.com