The ST11M and ST11R are 8-bit ST412 interface controllers

ST11M, ST11R

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ST412 Interface Controller

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Installation Guide

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__________________________________________Seagate

Seagate, Seagate Technology and the Seagate logo are registered

trademarks of Seagate Technology, Inc. INSTALLR(tm) is a

trademark of Seagate Technology, Inc.

920 Disc Drive, Scotts Valley, California 95066-4544, USA

Telephone: 408/438-6550

Publication Number: 36095-001, Rev. E

Seagate reserves the right to change, without notice, product

offerings or specifications. This publication, and all material

No part of this publication may be copied without written

permission of Seagate Technology, Inc.

PC AT and PC-DOS are registered trademarks of International

Business Machines Corporation. XT is a trademark of International

Business Machines Corporation.

Disk Manager is a registered trademark of Ontrack Computer

Systems, Inc.

MS-DOS is a registered trademark of Microsoft Corporation.

Introduction:

This installation guide supports the Seagate ST11M MFM and ST11R

RLL Controllers, ROM Version 2.0 or higher.

The ST11M and ST11R are 8-bit ST412 interface controllers

designed for use in PC XT AT systems with DOS-based applications.

Use with other than DOS-based systems is beyond the scope of this

guide. Contact your Distributor/Dealer.

* The ST11M is designed for use with drives employing MFM data

encoding.

* The ST11R is designed for drives using RLL (2,7) data

encoding. Seagate RLL drives are easily recognized by an "R"

after the model number, e.g., ST157R. Seagate Technology, Inc.

assumes no liability for installation of an RLL controller

with an MFM-certified drive.

* The ST11M/ST11R have a unique recording format and therefore

require all attached drives to be installed by one of the

processes described in this guide before operation.

This publication may be used with Seagate Paired Program drives

or as a controller-only installation guide.

Paired Program drives are shipped with a Seagate controller. They

are recognized by a "PR" label on the drive top cover. Paired

drives are shipped formatted with a small DOS partition

containing the installation program, INSTALLR, which will low-

level format and partition your drive. You must supply the DOS

program. The ST11M/ST11R can recognize whether a drive has the

Paired Program software loaded, or has been previously installed.

Paired Program drives with formatted capacities greater than 32

MBytes have Disk Manager partitioning software loaded. This

utility has been customized by Ontrack for Seagate. Refer to

Section 2.1 for special instructions on formatting Paired Program

drives.

Before You Begin...

Inspect the controller, drive, cables, mounting

hardware/accessories, documentation and packaging. If any item is

incorrect, missing or appears damaged, contact your Distributor

or Dealer immediately.

Handling: Improper handling during transit/shipping accounts for

many "installation" problems. Prior to installation, handle your

drive/controller carefully.

Observe Static-Discharge Precautions: Keep the drive/controller

in their static-shielded bags until you are ready to complete the

installation. Use a grounded wrist-strap at your workstation; if

unavailable, ground yourself frequently by touching the metal

chassis of the system before handling any components. Avoid

static-inducing carpeted areas.

Shipping: When transporting or shipping a drive or controller, a

Seagate-approved container must be used. Keep your original box.

They are easily identified by a red label identifying them as a

"Seagate Approved Package."

Shipping a drive in a non-approved container will void the drive

warranty.

Repair centers may refuse receipt of components improperly

packaged or obviously damaged in transit. Contact your

Distributor to purchase additional boxes. Seagate recommends

shipping by an air-ride carrier experienced in handling computer

equipment.

Maintenance: Seagate disc drives do not require any preventative

maintenance. The head/disk assembly is sealed and does not

contain any user-serviceable components. Tampering with the

factory-seal will void the warranty.

1.0 ST11M/ST11R Controller Installation

Caution: Do not handle a drive or controller without observing

static-discharge precautions. A grounded wrist-strap is

preferred; if unavailable, ground yourself frequently by touching

the metal chassis of the system before handling any components.

Do not unpack the drive/controller until you are ready to

complete the installation.

BEFORE ATTEMPTING ANY INSTALLATION, READ THROUGH ALL STEPS AND

VERIFY THAT THE SYSTEM IS POWERED-DOWN.

During the formatting process, you will be asked to enter some

simple drive specifications. Please refer to Figures 1-2 for

formatted capacity and basic specifications. For non-Seagate

drives, refer to the manufacturer's instructions.

Figure 1: Seagate MFM Drive Setup - ST11M

=============================================================

=============================================================

| ST124 | 21.4 | 4 | 615 | 17 | No |

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| ST125 | 21.4 | 4 | 615 | 17 | Yes |

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| ST138 | 32.1 | 6 | 615 | 17 | Yes |

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| ST151 | 42.5 | 5 | 977 | 17 | Yes |

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| ST225 | 21.4 | 4 | 615 | 17 | No |

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| ST251 | 42.8 | 6 | 820 | 17 | Yes |

-------------------------------------------------------------

| ST252 | 42.8 | 6 | 820 | 17 | Yes |

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|ST4053 | 44.5 | 5 | 1024 | 17 | Yes |

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|ST4096 | 80.2 | 9 | 1024 | 17 | Yes |

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Figure 2: Seagate RLL Drive Setup - ST11R

=============================================================

=============================================================

| ST137R| 32.7 | 4 | 615 | 26 | No |

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| ST138R| 32.7 | 4 | 615 | 26 | Yes |

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| ST157R| 49.1 | 6 | 615 | 26 | Yes |

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| ST225R| 21.2 | 2 | 667 | 31 | No |

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| ST238R| 32.7 | 4 | 615 | 26 | No |

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| ST250R| 42.9 | 4 | 667 | 31 | No |

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| ST277R| 65.5 | 6 | 820 | 26 | Yes |

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| ST278R| 65.5 | 6 | 820 | 26 | Yes |

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|ST4144R| 122.7 | 9 | 1024 | 26 | Yes |

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Data Cylinders: User cylinders are calculated from logical zero,

i.e., 0 to 614 equals 615 cylinders.

Write Precompensation (ST225 Only): For optimum performance,

precompensation is recommended starting on cylinder 300. Enter

the information, when prompted.

Interleave: Use optimum interleave as indicated in installation

routine.

Read/Write Head Parking: A PARK program is preloaded on all

Paired Program drives, PARK.EXE or PARK.COM, which the INSTALLR

software will copy to a diskette during installation. The

following drives require parking before the drive/system is

transported: ST124, ST137R, ST225, ST225R, ST238R, ST250R. All

other Seagate drives feature automatic R/W head parking at power-

down.

1.1 Set the Controller BIOS Address

Controllers and add-in boards are installed in the bus slots on

the computer's motherboard. These slots are recognized by the

computer BIOS address number. Each board installed must be

jumpered for a specific address.

C8000H is the default BIOS address for the ST11M/ST11R. If this

address is already occupied by another board, use the jumpers

provided to change the Seagate controller to another address.

Refer to Figure 3.

When installing an ST11M/ST11R controller with a Seagate

ST01/ST02 SCSI Host Adapter, the controller must be at the lowest

address (C8000H).

When installing the ST11M/ST11R in a system already containing a

hard disc controller, the Seagate controller must be jumpered at

a higher BIOS address than the resident controller. If you are

not sure of the other controller's address, try one of the higher

addresses for the Seagate controller.

Controller physical installation will only involve setting the

BIOS address (Figure 3), attaching the cables and inserting the

controller in a system bus slot. It is often easier to attach the

cables before you install the controller.

Figure 3: ST11M/ST11R ST412 Interface Controller

J2-Drive 1 J3-Drive 2 Ú J1

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===============================================================

| Jumper Setting at W1 | BIOS Address | Port Address |

===============================================================

| No Jumpers Installed | C8000H (Default) | 320H - 323H |

----------------------------------------------------------------

| Pins A-B Shorted | D0000H | 324H - 327H |

----------------------------------------------------------------

| Pins C-D Shorted | D8000H | 328H - 32BH |

----------------------------------------------------------------

| Pins A-B and C-D |E0000H (Do not use on| 32CH - 32FH |

| Shorted | an AT-class system) | |

----------------------------------------------------------------

1.2 Controller Physical Installation

CAUTION: VERIFY THAT THE POWER IS OFF.

1. Remove the System Cover (Refer to your system manual).

Access to the screws is usually at the back of the system.

Save the screws. Systems vary, but most require you to slide

the cover forward for removal.

2. Install the Controller into a System Bus Slot.

Verify that all connections are correct and replace the system

cover.

3. Optional Drive Power Connector on the ST11M/ST11R.

Normally, drive power is supplied via a power harness from the

system power supply directly to the drive's J3 DC power

connector. The J5 connector on the ST11M/ST11R can be used to

provide disc drive power in system lacking an extra power

harness or for "Drive-on-a-Card" applications. See connector

J5, Figure 3.

A cable splitter, often called a Y-cable may be used to tap

off the diskette drive power cable. They are available from

most Distributors/Dealers.

2.0 Preparing to Format Your Drive

Please read this section before proceeding to the formatting

instructions. Be sure to back up any drive containing data.

Formatting at any level may result in partial or complete loss of

data. Seagate Technology, Inc. assumes no liability for lost

data.

* Always use the same version of DOS throughout the entire

process. On two-drive systems: Always use the same version of

DOS on both drives. When adding a second drive, it is

sometimes necessary to reformat the first drive.

* DOS assigns a logical identifier (C, D, E...) to each

partition that it recognizes during the boot load. It assigns

these letters to the first partition on each physical drive in

sequential order (e.g., C to Drive 1, D to Drive 2).

Subsequent letters are assigned to the remaining partitions on

Drive 1, followed by Drive 2. See table below for typical

examples:

=======================================

Partition | Drive 1 | Drive 2

=======================================

1 C D

2 E H

3 F I

4 G J

* For optimum performance, format the drive installed in your

system in the same orientation in which it will be used.

2.1 Paired Program Drive Formatting

Paired Program drives are shipped with a small DOS partition

containing Installation software and a README file which has the

latest information for the drive being installed. See Section

3.0.

2.2 Non-Paired Drive Formatting

Seagate non-paired drive do not have installation software or

recognizable format. These drives may be installed by following

the procedures in Section 4.0.

2.3 Paired Drives with Less than 32 Formatted MBytes

You will need one DOS-bootable diskette that has the boot files

from the version of DOS that you plan to sue on your Seagate

drive. This diskette should also contain the FORMAT program

provided with DOS, and sufficient space (approximately 50 KBytes)

to save the installation programs from eh hard drive. The

diskette must not be write-protected.

2.4 Paired Drive with Greater than 32 Formatted MBytes

You will need two diskettes; one DOS-bootable with the version of

DOS you plan to use. The second diskette must have at least 360

KBytes available to save the installation and Disk Manager

programs. The diskettes must not be write-protected.

2.5 CMOS Configuration

If you are installing your drive in a PC AT and a hard drive is

not presently attached or operational, the hard drive count in

CMOS will already be set to zero.

If a standard hard drive is already attached and operating, it

will be the first drive and the Seagate Paired Program drive will

be Drive 2. It is not necessary to change the CMOS hard drive

count when installing with ST11M/ST11R controllers.

2.6 Read/Write Head Parking

A PARK program is preloaded on all Paired Program drives. The

following drives require this program before the drive/system is

transported: ST124, ST137R, ST225, ST225R, ST238R, ST250R. All

other Seagate drives feature automatic head parking at power-

down.

3.0 Paired Program Installations

Read Sections 1-2 before beginning any formatting. The entire

software installation routine is menu-driven and takes from ten

to thirty minutes, depending on drive size. For specific DOS

questions, refer to the DOS manual supplied with your system.

After the format is completed, the read/write heads will be

parked. At the next power-up, the system will boot from the hard

disc.

3.1 Paired Program Formatting

Place a DOS-bootable diskette (to boot simply means to start the

system) in Drive A and switch the power on a follow the

instructions displayed on the screen. If you are installing a

second drive, type:

D:INSTALLR D

If you are installing a drive with Disk Manager software and you

already have a hard disc in your system, you must copy the

DMDRVR.BIN and CONFIG.SYS files from the Disk Manager diskette to

the existing (first, or boot) drive.

If you already have a CONFIG.SYS file on the boot drive, update

the file to include the following line: DEVICE=DMDRVR.BIN

Refer to your DOS manual for instructions on editing the

CONFIG.SYS file. Disk Manager also provides help files which you

may print using the standard DOS print commands.

4.0 Non-Paired Drive Formatting

Use this procedure for non-paired drives or when reformatting a

paired drive whose installation software files were lost or not

copied before formatting.

Be sure to back up any drive containing data. Formatting at any

level may result in partial or complete loss of data. Seagate

Technology, Inc. assumes no liability for lost data.

If you use the DOS DEBUG utility to low-level/primary format the

drive, you must answer "YES" to the question, "Do you want to

enter the defect map which is supplied on your hard disc drive

cover?". Proceed with entering all defects from the defect map.

Important Note: If you use the ST11M/ST11R controller, BIOS

Version 2.0, with a Seagate Paired Program drive, but do not use

the Seagate installation software (INSTALLR), you must manually

enter the Manufacturer's Defect Map (attached to the drive top

cover) during the low-level/primary formatting operation.

Always use the same version of DOS throughout the entire process.

On two-drive systems: Always use the same version of DOS on both

drives. When adding a second drive, it is sometimes necessary to

reformat the first drive.

4.1 Low-level Physical Format Using BIOS Facility

When using DEBUG to format in an AT system, the CMOS or system

setup should be set to 0 (i.e., no hard drive installed).

1. Boot the system from the DOS system diskette.

2. At the A> prompt, insert the DEBUG diskette and type:

DEBUG <enter>

3. To access the controller's format routine, at the "-" prompt

type:

G=XXXX:5 <enter> (Where XXXX is the correct address; refer to

Figure 3.)

Note: Seagate controllers will step you through the process.

Refer to the drive charts Figures 1-2 for correct drive

parameters.

On drives over 32 formatted MBytes, Disk Manager will

automatically partition and high-level format the drive.

Use FDISK and FORMAT on your DOS diskette for drives less than

32 formatted MBytes.

5.0 Troubleshooting Your Installation

If you have a problem getting the initial screen, or later

getting the system to boot:

* Check the cabling between the controller and drive. Pin-1 on

the controller always corresponds to Pin-1 at the drive

connector. Most cables have a contrasting color on the cable

to indicate Pin-1.

* Check the power cable to the drive. Can you heard the drive

spinning up?

* Verify correct Drive Select jumper.

* Verify correct BIOS address for the controller. If you have

more than one board that uses BIOS ROM space, each must be

configured to a different memory address. Addressing multiple

boards at the same memory location can cause problems of a

seemingly indeterminate nature.

* Low-level formatting takes too long or never completes

Format again. Make sure correct drive parameters were entered

and cable connections are correct.

* FDISK or Partitioning Error Messages: "Error reading fixed

disc," or "No fixed disc present"

Check correct drive parameters entered. Turn the system off

and power-up again. Rerun FDISK.

* High-level Format Error Message: "Invalid drive specification"

Run FDISK again to make sure the DOS partition is active.

Check drive parameters and low-level format again.

In AT systems, check that no drive type is entered in the

system CMOS setup for the drive attached to the ST11M/ST11R.

* Drive fails recal or test drive ready

Check installation, cables, and drive select jumper.

* I/O Errors when using Disk Manager:

"Uncorrectable ECC - I/O Error"

"Unrecoverable I/O Error"

If you are formatting a drive in an XT or using the

ST11M/ST11R controller in an AT, low-level format the drive

through DEBUG using the controller's BIOS routine.

* After formatting with Disk Manager, your system does not

recognize the D, E, F... partitions:

First, make sure that you boot from the hard drive. If you

still cannot access these partitions, check that the Disk

Manager device driver, DMDRVR.BIN is in the root director of

the C: (boot) drive. Verify that the CONFIG.SYS file contains

the following line:

DEVICE=DMDRVR.BIN

If you experience problems accessing your DOS partition after

installation, refer to the help files provided with Disk Manager.

For system or DOS help, contact your computer system

manufacturer. For additional installation help, contact your

authorized Seagate Distributor/Dealer.

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The ST11M and ST11R are 8-bit ST412 interface controllers

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