Re: Emulex SC70 information

From: Tom Uban (tuban_at_ubanproductions.com)
Date: 12/22/03 

Date: 22 Dec 2003 09:22:46 -0800

Paul Repacholi <prep@prep.synonet.com> wrote in message news:<87vfoak7ss.fsf@prep.synonet.com>...
> tuban@ubanproductions.com (Tom Uban) writes:
>
> > Is anyone left who knows about the Emulex SC70 (SC71 or SC72) RH70
> > massbus SMD disk controllers? I have an 11/70 and a CDC9762 and have
> > the opportunity to get an SC70 to mate the two. Since the condition
> > of the SC70 is unknown, ideally I would like to locate a schematic
> > set for it.
>
> I should have the SC70 manuals here some where. A SC 70 is OK for
> a 9762, but I *think* you need the right mapping roms to go
> with your disk type.
>
> What is the part number on the ROMS on the SC70?

I am looking at my Emulex Controller Handbook (Issue number 2, April 1981)
and reading about the SC70 vs SC71. I guess my assumption about the board
in the SC70 being similar to the SC72 may have been in error. Here is what
it has to say:

"There are three basic microcode models - designated Models
A, B, and C - which correspond to an existing DEC
controller design. In the original SCXX controller designs
- SC01, SC11 and SC70 - the basic models have multiple
microcode versions which handle the different disk drive
configurations supported by the controller. Each of these
models/versions can apply to any of the hardware designs -
SC01, SC11, SC70 - although not all possibilities have been
implemented for practical reasons. Any controller may be
reconfigured to any model/version by changing only the
microcode PROM chips.

In later Emulex controller designs - SC21 and SC71 -
the same basic models (A, B, C) are provided, but drive
configuration is accomplished by means of a configuration
PROM and option switches on the board. Therefore,
different operating modes required to adapt the controller
to a drive are inherent to the microcode for each model, and
different PROM sets are not required to support different
drive types."

The book goes on to describe each of the A, B, and C models and
says that the model B3 (which is what I am getting) is exactly
the one which I need for my CDC9762!

I would still like to get a set of manuals for the SC70...

--tom