HP 21MX Ethernet/SCSI card?
jws at jwsss.com
Wed Feb 18 11:16:21 CST 2015
On 2/18/2015 7:43 AM, Jay West wrote:
> Johannes wrote...
> I just got HP 2109 E-series which I bought from eBay last week.
> Congrats! I love those machines :)
> I was planning to make own tape emulator interface for it, but I found
> mystery card from it, and it could solve some of data transfering
> Here's pictures of
the Symbios 53C710 near the connector has info that indicates that it
may be an Symbios chip developed for HP for the HP 9000. So it could be
either a custom instrument card, or it may if you are luck be general
enough to get to any SCSI.
Give these systems use with HP test equipment, I know that such as the
16500B and 16500C have SCSI ports which allow the 16505 access the
analyzer chassis. This may be a card developed for the 2109 system by
HP for a custom or limited run job.
> In all my years I have never seen such a card for HP21XX machines.
> Absolutely no clue.
> It seems to be from 1995 what I can guess from chip date codes, but theres
> no any manufacturers logos. As you can see pic, there is RJ45 and SCSI
> connectors. Is this somekind of emulator board for disk drive..? Can it used
> with PC (like old NetBEUI protocol) or is this for some
> Computer itself is from Navy's Radcom station (made by Grumman Aerospace
> Division), maybe somebody knows more of this system...
> I'd have to see the card in person to guess, but I wouldn't think the RJ45
> would be Ethernet. Serial management port maybe? Just a WAG...
> If you're thinking of home-brewing something, I'd suggest starting with a
> Microcircuit Interface board. Those boards were designed to be general
> purpose interfaces and are a great starting point. Bob Shannon has a paper
> tape reader/punch emulator device that works fantastic that uses one, and I
> think there is an IDE drive interface floating around that may use a MCI
> board as well...
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