Simulated disk drive for RT-11?
ajp166 at bellatlantic.net
Mon Jun 6 20:20:36 CDT 2005
>Subject: Re: Simulated disk drive for RT-11?
> From: David Betz <dbetz at xlisper.mv.com>
> Date: Mon, 06 Jun 2005 15:24:52 -0400
> To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org>
>Is there a description somewhere of all of the BA11-?? variants? It
>seems that there are many of them and they are of various sizes and
>shapes. In fact, I think that the cabinet my 11/23-AH is mounted in is
>a BA11 of some sort (a BA11-AH maybe?) but it is nowhere near as small
>as this BA11-VA that you describe. I've found various lists of QBus
>modules on the net but no list of the various boxes that DEC produced.
>Can someone point me to one?
Don't know of one on line. I have the set "LSI-11 Systems Service
Manuals" as my reference.
>And, I'll repeat my question, does anyone have one of these small -11
>QBus boxes they'd like to sell or trade? It seems that the BA23 might
>be a good choice as well.
Basically all of the BA11 boxes are rack sized and vary only in power
supply, backplane configuration and some variation in front pannel.
The BA-11-va is one of a few small boxes. Another choice is the BA23
in the floor standing case.
Actually a BA11 rack box is only twice the size of the BA11-va and
can be used as a desktop case. I've done this with the drives just
sitting on top stealing power from the BA11 supply. The options of
such a configuration are much greater due to larger backplane. I've
seen one such done this way with a wood (Plywood) case surrounding a
BA11-N and twice the height to allow a floppy and a RD52. Much
smaller than a rack and still very useful.
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