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Date: Fri, 7 Feb 1997 07:03:27 +1100
From: Bruce Evans <bde@zeta.org.au>
Message-Id: <199702062003.HAA01985@godzilla.zeta.org.au>
To: hackers@freebsd.org, pst@jnx.com
Subject: Re: serial ports at 230k
Cc: bde@freebsd.org
Sender: owner-hackers@freebsd.org
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>Does anyone have any experience with running 16550A's at 230kbps under FreeBSD?
>Yes, I know, the driver doesn't support it currently, but has anyone played?

Not me.  I checked the PC16550D specs recently.  The maximum speed is
1.5Mbps like I remembered.

If you only care about remote gdb throughput to an sio port on a
FreeBSD host, note that the protocol is non-streaming so it is limited
to 1 packet per clock tick (30Kbps effective throughput at best) by the
host's pseudo-DMA timeout routine.

Bruce