Need Shugart 851 manual

From: Don Maslin <donm_at_cts.com>
Date: Sun Mar 3 17:14:50 2002

On Sun, 3 Mar 2002, Richard Erlacher wrote:

> I think what's of concern to Joe, Don, is that Intel apparently used some of
> the "radial" options that require the drive be jumpered specifically for those
> options. Nearly all drive makers supported those options, since they allowed
> the system to do such things such as overlap seeks, test the RDY signal on two
> drives separately, and the like. In the interest of improving system
> performance, most "major" system vendors used these features, though they were
> seldom used in the low-end, such as the S-100 market because they caused a
> huge support burden. The low-end controller/system vendors tended to
> recommend configurations compatible with the factory default settings provided
> with the most common drive, the SA800. With controllers like what Joe's
> using, it's unlikely the thing will work properly with an SA-800 drive with
> the default settings. The use of these options is certainly not "cobbled up"
> as the drive vendors provided an extensive repertoire of thoroughly documented
> options for these drives.
>
> In the case of the Shugart drives, i.e. SA-80x and SA-85x, the jumpers for
> corresponding options had the same designations, IIRC, though the circuitry
> was not always the same. If the controller manual is available, it may
> specify a set of jumpers for the SA-80x, which may, ultimately, work OK with
> the SA-85x. However, I'd want to ensure that the Intel controller has the
> firmware/software support for two-sided drives. It's quite possible that it
> does not.
>
> Dick

Sounds reasonable.
                                                - don

> ----- Original Message -----
> From: "Don Maslin" <donm_at_cts.com>
> To: <classiccmp_at_classiccmp.org>
> Sent: Saturday, March 02, 2002 10:04 PM
> Subject: Re: Need Shugart 851 manual
>
>
> >
> >
> > On Sat, 2 Mar 2002, Joe wrote:
> >
> > > Thanks for posting these. I know that I just asked for the jumper
> > > settings but I think I'm going to need more. I want to replace some
> Shugart
> > > 800s in my Intel MDS with the Shugarts 851s and I've been studying the
> > > interface, wiring and S 800 setup and Intel has cobbled up a truely
> > > bizzarre setup and I think I'm going to need the whole OEM setup manual
> for
> > > the 851 so that I can find out where to make some of the circuit
> > > modifications. A couple of people have already promised to get me a copy.
> > > Thanks.
> >
> > Joe, in a `normal' Shugart drive installation, a switch from SA-800/1 to
> > the SA-850/1 is almost a dropin replacement. If it is more than that,
> > Intel must have engaged in some `hanky-panky' with their circuitry.
> >
> > Good luck!
> > - don
> >
> >
> >
>
>
Received on Sun Mar 03 2002 - 17:14:50 GMT