From owner-freebsd-stable  Wed Jun  9 15:48:44 1999
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Date: Wed, 9 Jun 1999 18:48:41 -0400 (EDT)
From: "Mike O'Dell" <mo@servo.ccr.org>
Message-Id: <199906092248.SAA48361@servo.ccr.org>
To: freebsd-stable@freebsd.org
Subject: sending breaks on com ports....
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welllllll, back in the days before hacked drivers that would
wiggle the break bit in the DH-11 registers, we did the following,
assuming the port was set for some relatively speedy speed (4800 or 9600):

	(1) set the port to the slowest baud rate it supports - probably 50 baud
	(2) set the mode for 8 bits no parity
	(3) write a buffer of 0x00 to the port

usually worked just fine

	-mo


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