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- INSTALLING THE ST01 HOST ADAPTOR
- WITH A SEAGATE SCSI DISC DRIVE
-
- I. Introduction
-
- Seagate reserves the right to change, without notice, the specifications
- contained in this file.
-
- The ST01 provides the connection between the IBM PC XT/AT* (or compatible)
- and up to two Seagate SCSI drives.
-
- *IBM PC XT/AT are registered trademarks of International Business Machine
- Corporation.
-
- -The ST01's onboard software will assist you with the required formatting
- operation.
-
- -Drive's with more than 32 formatted megabytes require device driver
- software for formatting. Seagate currently ships partitioning software
- only with drives greater than 32 formatted megabytes.
-
- Before attempting installation read through these instructions and verify
- that the system is powered-down.
-
-
- II.ST01 AND Disc Drive Installation
-
- 1. Remove the top cover from the system. Retain the screws.
-
- 2. Set the SCSI ID jumper on the disc drive. The ST01 recognizes devices
- by their SCSI ID number.
-
- -If you are installing one drive, the ID number is O (no jumper). The
- drive is shipped with ID set to zero.
-
- -A second physical drive must be set as ID number 1. ID number 1 is
- selected by placing a shorting jumper on the set of shorting pins
- furthest away from the 50 pin cable connector on the drive. If you are
- installing two drives, remove the resistor termination packs from the
- first drive.
-
- -Note: If the drive has a parity jumper, it must remain shorted. The
- parity jumper is the set of pins closest to the 50-pin cable connection on
- the drive.
-
- 3. Remove the ST01 from the protective covering and pull the rubber
- strips from between the connector pins. Observe static-discharge
- precautions and do not touch the board components or edge-connectors.
-
- 4. Set the starting address on the ST01.
-
- -CA000 is the default BIOS address. If there is a board already installed
- at this address in the system, use the jumpers to change to another
-
-
-
-
-
- address. See table 1.
-
- Table 1: ST01 Host Adaptor
-
- There are four possible starting addresses for the ST01 BIOS
-
-
- Configuration Address
-
- No jumpers installed CA000 (default)
- Pins A-B shorted (top 2 pins) C8000
- Pins C-D shorted (bottom 2 pins) CE000
- Pins A-B & C-D shorted: DE000
-
-
-
- -A two-pin jumper is provided near the bottom of the Host Adaptor to
- disable the zero-wait-state (0WS)logic for some PC XT/AT look-alikes that
- do not use the 0WS control line. If the default configuration does not
- work properly, remove the jumper to disable this line.
-
- 5. Connect the cable to the ST01. You may find it easier to attach the
- cable before you install the ST01 in the system.
-
- -Pin-1 on the ST01 corresponds to pin-1 at the drive connector. Note that
- some cables have a contrasting-color stripe to indicate pin-1.
-
- 6. Install the ST01 into an available bus slot. For PC XT applications
- only: DO NOT USE slot number eight, which is next to the power supply.
-
- 7. Install the drive in the left-drive bay, if possible, to be sure that
- the power supply does not obstruct the cable.
-
- -For ease of installation attach the cable to the drive before you slide
- it completely back and into position.
-
- -Minimum required for mounting: 4, 6-32 UNC-2B x 0.31 inch screws. Snug
- the screws down evenly to approximately 8-inch pounds. DO NOT
- OVER-TIGHTEN.
-
- 8. Connect the drive DC power line.
-
- 9. Verify that all connections are correct and replace the system cover.
- Go to section III for the required formatting operation.
-
- III. Formatting a Drive with the ST01
-
- At power-on the ST01's onboard program will assist you by means of
- help-screens. Follow the short steps. You will need the DOS* diskettes
- and manual which came with your system. VERIFY CORRECT INSTALLATION, TURN
- ON THE SYSTEM AND FOLLOW THE SCREEN INSTRUCTIONS.
-
- *DOS is a registered trademark of Microsoft Corporation.
-
-
-
-
-
-
- 1. You will be instructed to run the DEBUG program followed by the
- starting address.
-
- 2. When the low-level format is complete, you will be instructed to run
- the FDISK and FORMAT programs. Some versions of DOS have different names
- for these two programs. See your DOS manual.
-
- -The FDISK program will instruct you to strike any key to restart the
- system. Disregard this instruction. INSTEAD, PRESS THE CTRL-ALT-DEL KEYS
- SIMULTANEOUSLY TO RESTART THE SYSTEM. Striking keys other than Ctrl-Alt-
- Del may prevent booting form the hard disc. If you accidentally press
- other keys, rerun the formatting program, using the DEBUG program.
-
- 3. If you have a problem getting the system to boot:
-
- - Check cabling: Pin-1 on the ST01 corresponds to pin-1 at the drive.
-
- - Verify correct SCSI ID number set at the drive.(See section II)
-
- - Verify correct address and 0WS jumper setting on the ST01.(See Table 1)
-
- IV. Read/Write Head Parking Utility
-
- If you are transporting the system or shipping the disc drive, and wish
- to park the read/write heads, run the DEBUG.com program and type g=CA000
- followed by Return.
-
- This routine applies only to the ST225N. All other Seagate intelligent
- drives will automatically park the heads at power-down.
-
- Note: IF YOU HAVE CHANGED THE ST01 BIOS ADDRESS JUMPER (TABLE 1), YOU
- MUST ENTER THIS ADDRESS IN PLACE OF CA000.
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