DEC CD-Rom Drive RRD40-DA Questions!!

From: Netdiablo <ndiablo_at_diablonet.net>
Date: Mon Apr 30 17:47:41 2001

> I found this on Ebay. Is this really SCSI? I thought it ran off of a
> special board made just fot it.... the M7552?

> In fact is this one of the same drives that was given away on the list?
> I don't recall, who gave it away, but I recall him mentioning a cd being
> stuck in it, just like this one!

> http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=1233983573

> I would buy it, but am unsure of exactly what it is.

> Chad Fernandez
> Michigan, USA

This is an external DEC 1X CD-ROM drive, SCSI, 512 byte sectors. It uses
a really strange type of caddy that was probably never used anywhere
else.
It took me a little while to figure out how to load/unload these things
:)

It works nicely as a 512 byte sector CD-ROM for getting those older
workstations running, but it is EXTREMELY slow.

Technically, I think that inside this enclosure is an interface
converter
board that changes the proprietary CD-ROM interface to SCSI. Kind of
reminiscent of those external TK50 cubes for the uVAX 2000 that
contained
boards to convert the special TK50->TQK50 interface to SCSI.

--Sean Caron (root_at_diablonet.net) | http://www.diablonet.net
Received on Mon Apr 30 2001 - 17:47:41 BST

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