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-
- READ THIS FIRST
-
- INSTALLATION GUIDE
-
- WD1004A-WX1
- Winchester Disk Controller Board
-
- FEBRUARY 1989
-
- COPYRIGHT 1989 WESTERN DIGITAL CORPORATION ALL RIGHTS RESERVED
-
- INFORMATION FURNISHED BY WESTERN DIGITAL CORPORATION IS BELIEVED TO BE
- ACCURATE. HOWEVER, NO RESPONSIBILITY IS ASSUMED BY WESTERN DIGITAL CORPORATION
- FOR ITS USE; NOR FOR ANY INFRINGEMENT OF PATENTS OR OTHER RIGHTS OF THIRD
- PARTIES WHICH MAY RESULT FROM ITS USE. NO LICENSE IS GRANTED BY IMPLICATION OR
- OTHERWISE UNDER ANY PATENT OR PATENT RIGHTS OF WESTERN DIGITAL CORPORATION.
- WESTERN DIGITAL CORPORATION RESERVES THE RIGHT TO CHANGE SPECIFICATIONS AT ANY
- TIME WITHOUT NOTICE.
-
- Radio Frequency Interference Statement
-
- This Western Digital product has been verified to comply with the limits for a
- Class B computing device pursuant to subpart J of Part 15 of FCC rules. This
- does not guarantee that interference will not occur in individual
- installations. Western Digital is not responsible for any television, radio, or
- other interference caused by unauthorized modifications of this product.
-
- If interference problems do occur, please consult the system equipment owner's
- manual for suggestions. Some of these suggestions include relocation of the
- computer system away from the television or radio or placing the computer AC
- power connection on a different circuit or outlet.
-
- This digital apparatus does not exceed the Class B limits for radio noise for
- digital apparatus set out in the Radio Interference Regulations of the Canadian
- Department of Communications.
-
- If you require further information or other technical support, please contact
- your authorized dealer:
-
- Trademarks used in this text: Filecard is a registered trademark
- of Western Digital Corporation.
-
- IBM is a registered trademark of International Business Machines Corporation.
- Seagate is a registered trademark of Seagate Technology. MS-DOS is a registered
- trademark of Microsoft Corporation.
-
- **************************************************************************
- INTRODUCTION
- **************************************************************************
-
- The WD1004A-WX1 board is easy to install. The following is a summary of the
- installation steps.
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- 1. Preliminary: set jumpers, drive configuration
- 2. Install hardware: drive, board, connect cables
- 3. Install software: use debug, low level format, etc.
- 4. Check installation: start system, use new board & drive
-
- CAUTION
-
- Handle the controller board by the ends of the board.
- Some of the chips are static sensitive and damage may
- occur if the board is incorrectly handled.
-
- **************************************************************************
- ABOUT THIS GUIDE
- **************************************************************************
-
- Angle brackets < > refer to a key. Therefore the symbol <Enter> refers to the
- Enter key.
-
- This guide was written using the IBM XT computer as a model. Sometimes specific
- examples, such as errors, refer to the IBM error code numbers. Therefore if
- you have an XT compatible computer, your error numbers may be different.
-
- About Menu Screens:
-
- Because computer manufacturers are always updating their products, and this
- installation guide covers installing WD1004A-WX1 controller boards in many XT
- compatible computers, some of the menu screens may not be exactly the same on
- your system. Always follow the instructions on your computer screen.
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- 1
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- SOME PRELIMINARY STEPS
-
- Before you begin the actual installation of the hardware and software, there
- are some preliminary steps that you need to do.
-
- GATHER SUPPLIES
-
- The installation requires that you gather the following tools and
- supplies.
-
- -- screwdriver
-
- -- XT compatible computer with space to hold the internal drive
-
- -- MFM hard disk drive(s)* with ST506 interface
-
- -- interface cables (20-pin data cables & 34-pin control cable)
-
- -- DOS version 2.0 or later (DOS 3.1 or later recommended)
-
- -- installation manual for XT compatible computer
-
- -- installation manual for hard disk drive
-
- **************************************************************************
- IDENTIFY DRIVE
- **************************************************************************
-
- The WD1004A-WX1 board works with any hard disk drive that has the ST506/412
- drive interface and no more than 1024 cylinders and 16 heads. The Seagate 225
- hard disk drive unit is such a drive.
-
- Look in your drive manual to verify that you have an ST506/412 MFM drive or
- check with your dealer.
-
- Then check the drive manual for the drive parameters, such as those listed in
- Table 1-1. You'll need this information for the low level format.
-
- Formatted Number of Number of Pre-Comp Step
- Capacity Heads Cylinders RWC Rate
-
- 21MB 4 615 307/none 75nsec
-
- This board does not work with RLL drives. If you have an RLL drive you need
- either the WD1004A-27X or WD1004-27X board.
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- **************************************************************************
- IDENTIFY BOARD
- **************************************************************************
-
- Figure 1-1 shows the connector locations (J1, J2, J3, J4, and J5) on the
- WD1004A-WX1 board and the location of the jumpers (W17 to W22, R23, and W25 to
- W28). The (J4) drive power connector is on the WD1004A-WX1 board to connect
- power to FileCard drives.
-
- BIOS ROM Incompatibility
-
- BIOS is an acronym for Basic Input Output System. ROM is an acronym for Read
- Only Memory. The BIOS ROM is a program on a computer chip that tells your
- computer how to operate devices attached to your computer.
-
- Some XT compatible computers do not operate with the Western Digital BIOS ROM
- because of an incompatibility. Most of these computers are listed in Appendix
- A. Check Table A-1 on page A-11 to see if you have one of these computers.
-
- If this is the case, you need to disable the Western Digital BIOS ROM by
- setting a jumper. If you have one of these computers, omit the low level
- format in this guide and instead follow your computer manufacturer's software
- installation instructions for low level formatting.
-
- ┌────────┐
- │ ┌──┘
- ┌─────────────────────────────────────────────────────────────────│ o │
- │ o ┌──J2────┐ ┌──────J1───────┐ └─────│
- │ ┌─J5──┐ └────────┘ └───────────────┘ ┌───────┐ │
- │ └─────┘ ┌──J3────┐ │ W17 │ │
- │ └────────┘ ┌────────┐┌───────┐ │ W18 │ │
- │ ┌──┐┌──┐ ┌───┐ │ ││ │ │ W19 │ │
- │ │ ││ │ │ │ │ ││ │ │ W21 │ │
- │ │ ││ │ │ │ │ ││ │ │ W22 │ │
- │ │ ││ │ │ │ │ ││ │ └───────┘ │
- │ └──┘└──┘ └───┘ │ ││ │ │
- │ ┌─────┐ │ ││ │ R23 │
- │ │ │ └────────┘└───────┘ R24 │
- │ │ │ ┌───────────┐ │
- │ │ │ │ │ ┌───────┐ │
- │ │ │ │ │ │ W25 │ │
- │ └─────┘ │ │ │ W26 │ │
- │ └───────────┘ │ W27 │ │
- │ External │ W28 │ │
- │ ROM └───────┘ │
- │ Socket │
- │ ┌J4┐ ┌─────────┐ │
- │ o └──┘ └─────────┘ o │
- └───────────────┐ ┌───────────────┘
- └┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┘
- Figure 1-1. WD1004A-WX1 Connector and Jumper Locations
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- **************************************************************************
- JUMPERS
- **************************************************************************
-
- Jumpers allow you to change certain functions on your controller board.
- Western Digital set the jumpers for the most common applications. It is
- unlikely that you will need to change any of the jumper settings.
-
- Appendix B contains a complete explanation of jumpers.
-
- CAUTION
-
- Handle the controller board by the ends of the board.
- Some of the chips are static sensitive and damage may
- occur if the board is incorrectly handled.
-
-
- Do I Need To Change Any Jumpers?
-
- No. Do NOT change any jumpers on the WD1004A board, unless you have one of the
- following conditions:
-
- -- The 1004A board is your second hard disk controller in the
- system.
-
- -- You have another peripheral unit which uses interrupt signal
- IRQ5.
-
- -- You have a BIOS ROM which is incompatible with WD1004A.
-
- Change Jumpers
-
- When you have one of the special conditions listed above, you need to add a
- jumper. In all other cases, do NOT add a jumper.
-
- -- If the WD1004A board is the second controller, change the
- controller address at W21 & W22. Check the first controller
- manufacturer's manual for the addresses and also see Appendix B.
-
- -- If another peripheral uses IRQ5, add a jumper at W27.
-
- -- If the computer motherboard BIOS ROM is incompatible, add
- a jumper resistor at R23.
-
- See Appendix B for information before you change any jumpers.
-
- **************************************************************************
- SET HARD DISK DRIVE CONFIGURATION
- **************************************************************************
-
- This section "Set Hard Disk Drive Configuration" refers to procedures that you
- do to your hard disk drives and not to your WD1004A controller. Since the
- WD1004A board works with many hard disk drives, you need to consult your drive
- manufacturer's manual for exact details.
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- You need to set the configuration for your hard disk drive unit, before you
- install the unit into your computer. You set your hard disk configuration by
- adjusting jumpers, switches, or termination resistors on the hard disk unit.
-
- Drive Settings
-
- The two settings that you can change are:
-
- -- drive number
-
- -- drive termination resistor
-
- You frequently don't have to modify the factory settings. The exact number of
- settings that you change depends on your disk drive and computer.
-
- Control Cables (34-pin Connectors)
-
- Setting the drive number depends on the type of control cable that connects
- your drive to your controller board. The two types of cables are listed below.
-
- -- without a twisted section
-
- -- with a twisted section
-
- Do NOT use cables from floppy drives. Hard disk cables are different!
-
- First identify which cable you are going to use. Look at the control cable and
- determine whether it is twisted. The control cable has the 34-pin connectors.
-
- If you already have one hard disk attached to your WD1004A-WX1 board and you
- plan to use the existing cable in your computer, you may have to open the
- computer case. See your computer manufacturer's instructions.
-
-
- ┌┐ ┌┐ ┌┐ ┌┐ ┌┐ ┌┐
- ││───────────────││────││ ││───────────────││────││
- ││───────────────││────││ ││───────────────││────││
- ││───────────────││────││ ││───────────────││────││
- ││───────────────││────││ ││───────────────││─XX─││
- ││───────────────││────││ ││───────────────││─XX─││
- └┘ └┘ └┘ └┘ └┘ └┘
- Non-twist Cable Twisted Cable
-
- Set Drive Number
-
- When the 34-pin control cable has a twisted section, set the jumpers or
- switches on both drives for drive select 2. See Figure 1-2, page 1-9.
-
- When the 34-pin flat control cable has NO twisted section, set a jumper or
- switch on the first drive for drive select 1 and the second for drive select 2.
- Drives are usually set at the factory to the drive select 1 position. See the
- drive manufacturer's manual for detailed instructions on how to set the drive
- number.
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- Set Drive Termination Resistor
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- The drive termination resistor should only be on the drive, which is the last
- physical drive installed in a daisy chain configuration. When you have two
- hard disk drives, remove or disable the termination resistor from the drive,
- which you plan to attach to the middle connector.
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- If you have only one fixed hard disk drive, do NOT change the termination
- resistor.
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- See the drive manufacturer's manual for detailed instructions on how to remove
- or disable the termination resistor.
-
- Note: A daisy chain cable has three connectors. The electrical signal in a
- daisy chain configuration moves from one connector to the next in sequence.
-
- CHECK COMPUTER --
- (Incompatible System BIOS ROM)
-
- Some early versions of XT computers have system BIOS ROMs that are incompatible
- with your WD1004A-WX1. Follow the instructions in the next section, "Read
- System BIOS ROM Date" to determine if you have one of these systems.
-
- Read System BIOS ROM Date
-
- DEBUG is a program which allows you to look at information in your computer on
- a fundamental level. You can enter the Debug program and use it to read a
- portion of your computer's ROM (read only memory). By following the steps
- below, you can determine the date the system BIOS ROM was created for your
- computer.
-
- The Debug program should be supplied on your DOS diskette. See your DOS system
- manual for complete instructions on how to use the Debug program.
-
- Place the diskette containing the Debug program in drive A, then
-
- 1. At the prompt (A>),
-
- Type: DEBUG
- Press <Enter>
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- 2. At the debug prompt (-),
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- Type: d f000:fff5 fffc
- Press <Enter>
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- 3. Date returned is (10/27/82) OR LATER
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- 4. To exit debug:
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- Type: q
- Press <Enter>
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- 2
-
- HOW TO INSTALL YOUR HARDWARE
-
- This section tells you how to install the hardware portion of your WD1004A-WX1
- controller board. You will install the controller board in an XT-compatible
- expansion slot.
-
- Do not attempt to install your hardware unless you have set the hard disk drive
- configuration as explained on page 1-7 and set the WD1004A-WX1 board jumpers,
- if required.
-
- The installation requires you to remove the cover from your computer. See your
- PC manual for exact instructions on how to remove the cover.
-
- If you are replacing an existing controller, then you also have to remove your
- old hard disk controller.
-
- If you want two hard disks on one controller, use a daisy chain cable to
- connect them onto one WD1004A board. A daisy chain cable has 3 connectors.
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- 1. Turn your computer power switch to OFF and unplug power cord.
-
- 2. Use a screwdriver to loosen the cover screws. Then remove the computer
- cover, so that you can see the expansion slots.
-
- 3. Place your hard disk drive unit(s) into the computer case
- and mount per the manufacturer's installation instructions.
-
- 4. Look and see which expansion slots are empty. You can use
- any empty slot that has the same type of edge connectors as the WD1004A
- board, except as noted below.
-
- Note: For IBM XT owners: DO NOT use the slot closest to the power supply. Use
- an expansion slot at least one position removed from the power supply.
-
- You may have to leave the fastening screws loosely connected, so that you can
- attach the cables.
-
- Or if you are removing a controller, locate the slot which has the old
- controller in it. Use this expansion slot.
-
- Note: You can also install a new fixed hard disk drive on an existing WD1004A
- controller. See Appendix A.
-
- 5A. If you are removing an old controller, loosen the screw
- which holds the old controller board in place. Then slide the old
- board out of the expansion slot and remove the cables. Locate the
- old rear slot cover and place it on your computer case. (You probably
- removed this old slot cover when you installed your old controller
- board.)
-
- 5B. If you are using a "new" expansion slot, remove the screw,
- but keep the rear slot cover in place. Save the screw to hold the
- new controller board.
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- 6. Connect 34-pin wide control cable to WD1004A board. Follow
- steps A or B. These instructions are for one or two drives on the
- same controller.
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- A. (for 1 drive only) Connect the 34-pin (wide control cable)
- connector to J1 on the controller board. Attach Pin 1 of the cable
- connector to Pin 1 on the controller board. See Figure 1-1 on page
- 1-4.
-
- Pin 1 of the cable connector is marked and is on the
- color coded edge of the cable. Do NOT force the cables and connectors.
-
- B. (for 2 drives only) If you are installing two hard disk
- drives on one controller, use a daisy chain cable. A daisy chain cable
- has 3 connectors.
-
- Connect the 34-pin wide connector on the longer daisy chain
- cable section to J1 on the WD1004A board. See Figure 1-1 and Figure
- 2-1.
-
- 7. Connect 34-pin wide control cable to drive unit.
-
- A. (for 1 drive only) Connect the free end of the 34-pin control
- cable to the hard disk drive.
-
- B. (for 2 drives only) Connect the end 34-pin connector on
- the shorter daisy chain cable section to the first hard disk drive
- unit's 34-pin connector. See Figure 2-1.
-
- C. (for 2 drives only) Connect the middle 34-pin connector
- on the shorter daisy chain cable section to the second hard disk drive
- unit's 34-pin connector.
-
- ┌───────────────┐
- │ FIRST DRIVE │───┐ 34 Pin Connector
- └───────────────┘──┐│
- ││
- ││ (Shortest Cable)
- ┌───────────────┐ ││
- │ SECOND DRIVE │──┘│ 34 Pin Connector
- └───────────────┘──┐│
- (Termination Resistor ││
- Removed) ││ (Longest Cable)
- ││
- ││
- ││
- ┌─────────────┘│
- │ ┌────────────┘
- ┌────────│─│───┐ 34 Pin Connector
- │ J1 │
- └──┐ ┌──┘
- └┴┴┴┴┴┴┴┴┘ WD1004A-WX1
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- Remember: The second hard disk drive unit is the unit from which you removed or
- disabled the termination resistor and changed the drive number. See page 1-10.
-
- 8. Connect 20-pin data cable(s) to the drive unit(s) 20-pin
- connectors. Attach one 20-pin data cable to the first hard disk drive
- unit. If you are installing a second drive attach the second 20-pin
- data cable to the second hard disk drive unit.
-
- 9. Connect 20-pin data cable(s) to the WD1004A board as described below.
-
- A. Connect the 20-pin data cable from the first drive to J2
- on the controller board. Attach Pin 1 on the cable to Pin 1 on the
- controller board. See Figure 1-1 on page 1-4.
-
- B. (for 2 drives only) If you install a second hard disk drive,
- connect the second 20-pin data cable from the second drive to J3 on
- the controller board. See Figure 1-1 on page 1-4.
-
- 10. (optional for systems with LED cables) Connect the 4-pin
- external LED cable connector to J5 on the controller board.
-
- 11. Connect power from your computer's internal power supply
- to the drive. Follow instructions for either A or B.
-
- A. Locate the internal 4-pin power connector(s) on your computer.
- See your computer manual. Connect this internal 4-pin power connector
- to your new fixed hard disk drive unit's power connector plug.
-
- B. (for 2 drives only) If you are installing 2 drives, you
- need either two internal power connectors on your computer or you
- need a "Y" adapter, which splits the power cable. See the manufacturer's
- manual.
-
- Connect the second drive unit to the second power connector plug or to the
- "Y" adapter.
-
- 12. Install the controller board into the expansion slot that
- you selected in step 4. The WD1004A-WX1 board's edge connectors (shown
- in Figure 1-1, page 1-4) fit firmly into the computer's motherboard.)
- See your computer manual for the location of your computer's
- motherboard. Press firmly on the board as you insert it into the
- expansion slot. Check that the board is seated properly by pressing
- down firmly on both ends of the board.
-
- 13. After the board is seated firmly in the expansion slot
- socket, secure the board using the clip that is on the end of your
- board. Place the bracket screw (which you removed in step 5) over
- the clip and rear slot cover. Then screw the clip and slot cover to
- the computer case.
- CAUTION
-
- When routing cables, be careful not to pinch them. Cables
- must not get caught between the cover and the boards nor should
- they obstruct any air flow path from fans or vents.
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- 14. Place extra cable lengths so that they are out of the way.
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- 15. Replace the computer cover. Then plug the power cord back
- into your computer.
-
- Your hardware controller installation is complete. However, your WD1004A-WX1
- controller board is really a complex circuit composed of both hardware and
- software, so that while the hardware installation is complete, you still need
- to install the software. Proceed to the next section for the software
- installation steps.
-
- Tighten hard disk unit(s) to computer case, etc. if not already done so in step
- 3.
-