Connecting an RM05 to a Qbus

From: Ethan Dicks <erd_6502_at_yahoo.com>
Date: Sun Jul 13 23:39:00 2003

--- cvendel_at_att.net wrote:
> Is there an adapter or converter to connect an RMxx drive to a Vax 4000's
> Qbus???

I seriously doubt it, even with a Qniverter.

> I can only find references to the Massbus controller and it was
> meant for the 700 series unibus.

There's real MASSBUS for 700-series machines (i.e., 11/780, 11/750,
8600, but not 11/725 or 11/730)... 32-bit data path and everything.

There's the RH11 Unibus<->MASSBUS adapter, but it probably can't handle
the RM05 data rate - the RM02 is spec'ed for the RH11 (it rotates slower
than the RM03).

You could try a 22-bit Qniverter with an RH11, but I wouldn't hold my
breath. More than one device that works with uVAX-IIs and -IIIs
does not work in the 4000. We found that the hard way at work when
someone tried to use a TLZ04 drive in a VAX-4000 with a Qbus COMBOARD.

> > When replying, please edit your Subject line so it is more specific
> > than "Re: Contents of cctech digest..."
> >
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Please edit the digest out of your messages. I got 52K in my overflowing
in-box.

-ethan
Received on Sun Jul 13 2003 - 23:39:00 BST

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