Need Shugart 851 manual

From: Don Maslin <donm_at_cts.com>
Date: Sat Mar 2 01:01:51 2002

On Thu, 28 Feb 2002, Joe wrote:

> I need a Shugart 851 8" floppy drive manual. Does anyone have one that
> hey'll loan me or make a copy of it for me? Or does anyone have a pointer
> to an on-line copy?
>
> I have a bunch of 851 drives and I need to see how to configure them to
> use in place of Shugart 800 drives.

Been offline a few days, Joe, so missed a timely response. This should
give you a pretty good picture of the jumper settings.

                                                 - don


                    CUSTOMER CUT/ADD TRACE OPTIONS
BRD TRACE SHIPPED FROM FACT.
LOC DESIGNATOR DESCRIPTION OPEN SHORT
5E 5E Terminations for Multiplex Inp. Plugged
4F DS1 Drive Select 1 Input Pin Plugged
4F DS2,3,4 Drive Select 2.3.4 Input Pins X
4F 1B,2B,3B,4B Side Select Opt. Using Drv Sel X
3F RR Radial Ready X
3F RI Radial Index & Sector X
4F R (Shunt 4F)* Option Shunt for Ready Output X
3F 2S Two Sided Status Output X
2F 850/851 Sector Option Enable 850 851
4F I (Shunt 4F)* Index Output X
4F S (Shunt 4F)* Sector Output X
3F DC Disk Change Option X
4F HL (Shunt 4F)* Stepper Power From Head Load X
4D DS Stepper Power From Drive Select X
5C WP Inhibit Write When Write Protected X
5C NP Allow Write When Write Protected X
3E D Alternate Input-In Use X
5B M Multi-Media Option Plugged
5C DL Door Lock Latch Option X
4F A,B,X(Shunt 4F)* Radial Head Load X
3E C Alternate Input-Head Load X
4F Z (Shunt 4F)* In Use From Drive Select X
5C Y In Use From Head Load X
5E S1 Side Select Option Using Dir Sel X
5E S2 Standard Side Select Option Plugged
5E S3 Side Select Option Using Drv Sel X
8E TS,FS** Data Sepaation Option Select TS FS Plugged
3E IW Write Current Switch Plugged***
3C RS Ready Standard Plugged
3C RM Ready Modified X
5C HLL Head Load Latch X
6E IT In Use Terminator Plugged
3E HI Head Load or In Use to In Use Ckt X
8D F**** Remove for MFM encode, Inst M2FM X
7D AF***** Install for FM or MFM encoding Plugged
7D NF***** Install for M2FM encoding X

*A 16-pin programmable shunt is **The SA851 offers a standard data
provided for the eight most separator as in the SA801, and an
commonly used cut track options. optional data separator which
These traces are usually shorted properly separates data and clock
as shipped from the factory. bits through the soft-sectored IBM
The traces can be opened with a standard format and address mark
knife blade or small screw driver. area. Trace FS offers the standard
                                     separator and Trace TS offers the
 ****MLC 10 only optional separator. Either may be
*****MLC 11 only selected through a shorting plug.

                                     ***Write current switch is plugged
                                     to the interface.

                       16 15 14 13 12 11 10 9
                       | | | | | | | |
  Shunt F4 > | | | | | | | |
                      Z| HL| A| B| X| I| R| S|
                       1 2 3 4 5 6 7 8
Received on Sat Mar 02 2002 - 01:01:51 GMT