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From: alan@shodha.enet.dec.com ( Alan's Home for Wayward Notes File.)
Newsgroups: comp.sys.dec
Subject: Re: KA820 processor's serial lines, what use?
Summary: Something slow.
Message-ID: <3035@shodha.enet.dec.com>
Date: 27 Apr 91 01:22:47 GMT
References: <1991Apr26.181122.12239@iplmail.orl.mmc.com>
Organization: Digital Equipment Corp. - Colorado Springs, CO.
Lines: 21

In article <1991Apr26.181122.12239@iplmail.orl.mmc.com>, carlm@iplmail.orl.mmc.com (carl morris) writes:
> [ A customer has noticed the serial ports available on the KA820
>   family of processors and wants to know what to do with them. ]

	Well, on ULTRIX they are /dev/console, /dev/ttyc1, /dev/ttyc2
	and /dev/ttyc3.  Since they are probably very DZ like serial
	lines, I would guess that each character input or output will
	require an interrupt.  Maybe not, but lots of DEC history
	suggests this will be the case.  It's also likely they have
	little if any modem control.

	You could probably use them for terminals or printer, but
	you wouldn't want to run them very fast.

	p.s.  I don't know what the VMS name would be.  Maybe CSA[1-3]?

>                          Thanks for any suggestions -- Carl


-- 
Alan Rollow				alan@nabeth.cxn.dec.com