Subject: Re: MUX serial cards.
To: None <email@example.com>
From: Jason Thorpe <firstname.lastname@example.org>
Date: 07/24/1996 08:53:17
On Wed, 24 Jul 1996 09:40:32 -0500
> I picked up a couple of these serial cards that look to be the short length.
> (they're at home and I didn't write down the number)
> They've got three RJ-11? jacks and a DB 25 female port.
> a) are they of any use? (since my 340's slot is full)
> b) can they be used in a 330? (since flip has one :) )
> c) does anybody want one?
That's a 4-port DCM card. From dmesg on my hp380:
NetBSD 1.2A (BASALT) #0: Sat Jun 22 13:12:55 PDT 1996
HP9000/380/425 (25MHz MC68040 CPU+MMU+FPU, 4k on-chip physical I/D caches)
[ . . . ]
dcm0 at scode13 ipl 3 flags 0xe
[ . . . ]
I use port 0 for my PPP link (it's the only port with modem control).
The rest are usable for terminals. Port 1 can be used as the console if
the remote switch it set on the card.
The serial performance on the dcm card is certainly better than the
built-in serial on the lower-end 300s... The 345/375/380/400-series have
a FIFO on the built-in port, so the gain is a little less.
Anyhow, they're certainly usable, as long as you have DIO slot available :-)
Somewhere in the port-hp300 archives is a pinout of the RJ ports, so you
can make serial cables for them.
-- save the ancient forests - http://www.bayarea.net/~thorpej/forest/ --
Jason R. Thorpe email@example.com
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