Subject: Re: Modem?
To: None <macbsd-general@NetBSD.ORG>
From: Henry B. Hotz <>
List: macbsd-general
Date: 08/25/1995 17:53:26
>Unfortunately the Mac won't let you easily have ospeed <> ispeed.
>There is only one baud rate generator on the 8530. I think (I'll
>need to look at the hardware ref at home) that we might be able to
>use an external data clock, but that would be the only way to get two
>different speeds. :-(

Just happened to have the manual handy.  The above is correct.

Each serial port has its own, but Rxd and Txd share the same one unless
referenced to an external source.  Also the BRG can only be sent to an
external pin if neither Rxd nor Txd are referenced to the BRG.  (Don't know

Henry B. Hotz (h)

The opinions expressed are my own,
not Loral's, and not Librascope's.