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-
- READ THIS FIRST
-
- INSTALLATION GUIDE
-
- WDAT-240 Adapter Board
- for
- Intelligent Storage Peripherals and Integrated Drives
-
- 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
- emissions from digital apparatus set out in the Radio Interference Regulations
- of the Canadian Department of Communications.
-
- Trademarks used in this text: IBM and AT are registered trademarks of
- International Business Machines Corporation.
-
- **************************************************************************
- INTRODUCTION
- **************************************************************************
-
- The WDAT-240 is a printed circuit board that connects an IBM AT or compatible
- computer to an intelligent storage peripheral or an integrated hard disk drive
- and an AT floppy disk drive. The WDAT-240 adapter board can be used with either
- the Western Digital intelligent storage peripherals or other manufacturers'
- integrated disk drives.
-
- You can attach two integrated disk drives and two floppy disk drives each in a
- daisy chain cable configuration to your computer system provided that the
- intelligent storage peripherals or integrated drives and the floppy drives
- themselves are designed for a daisy chain configuration. Look in your drive
- manufacturer's manuals to determine whether your integrated and floppy drives
- allow daisy chain configurations.
-
- This document describes installation of the WDAT-240 in the IBM AT-computer and
- compatibles.
-
- **************************************************************************
- UNPACKING THE ADAPTER BOARD
- **************************************************************************
-
- CAUTION
-
- Hold the adapter board by the ends. Static electrical discharge can
- permanently damage components if the board is not carefully handled.
-
-
- Remove the board from its anti-static pouch and inspect it for any visible
- signs of damage (scratches, loose components, broken connectors). Contact the
- dealer if there is damage.
-
- Retain any packing materials for reuse if it becomes necessary to return your
- WDAT-240 board.
-
-
- 1
-
- SOME PRELIMINARY STEPS
-
- Before you begin the actual installation of the hardware, there are some
- preliminary steps that you need to do.
-
- **************************************************************************
- GATHER SUPPLIES
- **************************************************************************
-
- The installation requires that you gather the following tools and supplies.
-
- - screwdriver
-
- - AT-compatible computer with space to hold the internal drive(s)
-
- - intelligent storage peripheral(s) or integrated hard disk
- drive(s) and floppy disk drives
-
- - interface cables (hard and floppy)
-
- - installation manual for AT-compatible computer
-
- - installation manual for intelligent storage peripheral(s) or integrated hard
- disk drive(s) and floppy disk drives
-
- **************************************************************************
- IDENTIFY COMPONENTS
- **************************************************************************
-
- The WDAT-240 board works with Winchester hard disk drives that have the AT
- intelligent storage peripheral or integrated drive interface and floppy drives
- with an AT-type interface.
-
- Look in your drive manuals to verify that you have an AT intelligent storage
- peripheral or integrated hard drive and an AT-type floppy drive or check with
- your dealer.
-
-
- This board does not work with XT drives. If you have an XT drive you need the
- WDXT-140R board or similar product.
-
- Components
-
- You should have the following items and be able to identify them
-
- - intelligent storage peripherals or integrated hard drives
- (1 or 2)
-
- - cable for intelligent storage peripheral or integrated
- drive
- (40 pin in daisy chain configuration)
-
- - floppy disk drives (1 or 2)
-
- - 360K, 720K, 1.2M, or 1.4M in 5 1/4" or 3 1/2" form factor
-
- - cable for floppy drive (34 pin in daisy chain configuration)
-
- You need to know the types of components that you plan to connect to your
- adapter board because some settings depend on the types of components attached
- to it.
-
-
- J2 Hard J1 Floppy
- ┌───────────────────────────────────────────────────────────────────────┐
- │ ┌─────40 Pin────────┐ ┌───34 Pin─────┐ │
- │ └───────────────────┘ └──────────────┘ │
- │ ∙ ∙ W1 . . W2 │
- │ ∙ ∙ . . . . W3 │
- │ 1 3 1 3 1 2 │
- │ │
- │ │
- │ │
- │ │
- │ │
- │ │
- │ │
- │ │
- │ │
- │ W4 │
- │ . . │
- │ 1 2 │
- └─┐ ┌─┐ ┌───────────────┘
- └┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┘ └┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┘
- P1 P2
-
-
-
- **************************************************************************
- IDENTIFY BOARD
- **************************************************************************
-
- Figure 1-1 shows the connector locations (J1 and J2) on the WDAT-240
- board and the location of the jumper blocks (W1 to W4).
-
- Look at your board and locate each connector and jumper block. Familiarize
- yourself with these locations. Note the connector and jumper names are also
- marked on the board itself.
-
- CAUTION
-
- Handle the WDAT-240 board by the ends of the board. Some of the chips are
- static sensitive and damage may occur if the board is incorrectly handled.
-
-
- **************************************************************************
- JUMPERS
- **************************************************************************
-
- A jumper block and a jumper plug combination, together, when installed or
- removed between a pair of pin locations on a board, turn certain functions on
- or off. These functions define the peripheral hardware to your computer.
-
- Western Digital set the jumper combinations for the most common applications.
- It is unlikely that you will need to change any of the jumper settings.
-
- Jumper Settings
-
- The WDAT-240 board contains four jumper blocks, W1 to W4, which define hardware
- parameters. By moving the jumper plugs, you can change the definition of the
- hardware which is attached to your computer. The jumper settings must match
- your physical system.
-
- The jumpers at W1 define the hardware interrupt delay (DIRQ14) value for the
- hard disk, the jumpers at W2 and W3 define the floppy address and drive speed,
- and the jumper at W4 defines the ground. Jumper settings are listed in Appendix
- B Tables B-1 through B-4. The factory default settings are identified with "*"
- symbols.
-
- Standard Jumper Settings (W1 to W4)
-
- The following is a list of the factory default jumper settings. This is how
- Western Digital defines the hardware attached to the WD240-AT board.
-
- - W1 with pins 3 and 4 connected passes the hardware interrupt (DIRQ14)
- value for the hard disk without delay to your computer
-
- - W2 with pins 1 and 2 connected activates the floppy drive
- and sets its address at 3F0-3F7
-
-
- - W3 with pins 1 and 2 open sets the floppy drive as a single
- speed floppy drive
-
- - W4 with pins 1 and 2 open sets chassis ground independent
- of the logic ground
-
- Do I Need To Change Any Jumpers?
-
- No. Do NOT change any jumper settings on your WDAT-240 board,
- unless you have one of the following conditions:
-
- - You want to delay the hardware interrupt (DIRQ14) signal.
-
- - You want to disable the floppy drive controller or set an
- alternate address at 370-377.
-
- - You have a 2-speed floppy drive.
-
- - You want to connect logic ground to the chassis.
-
- See Appendix B for information on changing jumpers.
-
- **************************************************************************
- CHANGE JUMPER SETTINGS
- **************************************************************************
-
- If you need to change the jumper settings for your WDAT-240 board, you should
- do this before you install the WDAT-240 board into your computer. You change
- the jumper settings by adding or removing the tiny jumper plugs on the WDAT-240
- board.
-
- When you have one of the special conditions listed in the section "Do I Need To
- Change Any Jumpers?", you need to change a jumper setting. In all other cases,
- do NOT change the jumper settings.
-
- - To delay the hardware interrupt (DIRQ14) signal, change
- the jumper at W1
-
- - To disable the floppy drive controller or set an alternate
- address at 370-377, change the jumpers at W2
-
- - To change the floppy drive speed, change the jumper at W3
-
- - To connect the logic ground to the chassis, change the jumper
- at W4
-
- Go to Appendix B for exact instructions BEFORE you change the jumper settings.
- If you do not need to change jumpers, you can proceed to Chapter 2.
-
-
-
-
- 2
-
- HOW TO INSTALL YOUR HARDWARE
-
- Before you begin the actual installation of the WDAT-240 hardware, you need to
- prepare and install your intelligent storage peripherals or integrated drives
- and floppy disk drives. Steps 1, 2, and 3 below refer to these procedures.
-
- Important
-
- Before you install the WDAT-240 board, determine whether
- you plan to change any of the jumpers. Change any jumpers before you
- install the board.
-
-
- 1. Turn your computer power switch OFF and unplug the power cord. Then remove
- the computer cover. See manufacturer's manual for details.
-
- 2. Look in your intelligent storage peripheral or integrated drive manual and
- follow the steps to configure and to install your intelligent storage
- peripheral(s) or integrated drive(s). These steps include setting the drive
- number, attaching the cable(s) to each drive, and mounting the drive(s) into
- the computer case. Be sure that you attach your drive(s) to a power source. If
- you have two drives, know which drive is set as the first drive and which is
- set as the second drive.
-
- Since the WDAT-240 board has only one integrated connector, you must daisy
- chain your intelligent storage peripherals or integrated hard drives.
-
- 3. Look in your floppy drive manual and follow the steps to configure and to
- install your floppy drive(s). These steps include setting the drive number and
- termination resistor, attaching the cable(s) to each drive, and mounting the
- drive(s) into the computer case. Be sure that you attach your drive(s) to a
- power source. If you have two drives, know which drive is set as the first
- drive and which is set as the second drive.
-
- Since the WDAT-240 board has only one floppy drive connector, you must
- daisy chain your floppy drives.
-
-
-
- │ │ │ │ │ Cable from Integrated Drive or
- │ │ │ │ │ │ │ │ │ │ Integrated Storage Peripheral
- │ │ │ │ │ │ │ │ │ │
- │ │ │ │ │ │ │ │ │ │
- *ooooooooooooooooooo
- ooooooooooxoooooooo@ x=Pin 20 &=Pin 34
- ┌───────────────────────────────────────────────────────────────────────┐
- │ *=Pin 1 ooooooooooxooooooooo oooooooooooooooo&o │
- │ *oooooooooooooooooo@ @=Pin 40 *oxooooooooooooooo │
- │ J2 (Hard) J1 (Floppy) │
- │ │
- │ x=Pin 5 │
- │ │
- │ │
- │ │
- │ │
- │ │
- │ │
- │ │
- │ To Computer Expansion Slot │
- └─┐ ┌─┐ ┌───────────────┘
- └┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┘ └┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┘
- P2 P1
-
- Figure 2-1. Connect Pin 1 to Pin 1
-
- 4. Connect the interface cable(s) from the intelligent storage peripheral(s)
- or integrated drive unit(s) and floppy drive(s) to the WDAT-240 adapter board.
- See steps A and B below.
-
- A. Attach the interface cable 40 pin connector from the integrated hard
- drive to J2 on the WDAT-240 board. Attach Pin 1 of the cable connector to Pin 1
- on the WDAT-240 board. See Figure 2-1.
-
- Pin 1 of the cable connector is marked and is on the color coded edge of the
- cable. Pin 20 on the WDAT-240 board is keyed. Do NOT force the cable and
- connector.
-
- B. Attach the floppy drive interface cable 34 pin connector from the floppy
- drive to J1 on the WDAT-240 board. Attach Pin 1 of the cable connector to Pin 1
- on the WDAT-240 board. See Figure 2-1.
-
- Pin 5 on the WDAT-240 board is keyed. Do NOT force the cable and connector.
-
- 5. After you have installed all the intelligent storage peripheral(s) and
- drive(s) into the computer case, secured them in place, and attached the
- cables, look and see which expansion slots are empty. Select one that has the
- same type of connector as those on the WDAT-240 board. Use an empty expansion
- slot which is as close to the new intelligent storage peripheral(s) or drive(s)
- as possible.
-
-
- 6. Loosen the screw holding the cover of the expansion slot, which you
- selected in step 5. The screw is located at the rear. Remove the slot cover
- screw, but do not remove the expansion slot cover.
-
- Your WDAT-240 board should have a plastic clip attached. If the clip is
- not attached to the board, locate the clip and gently push it onto the upper
- right-hand corner of the WDAT-240 board. See Figure 2-2.
-
- If your WDAT-240 board has a metal bracket instead of a clip, remove the
- expansion slot cover. The metal bracket replaces the slot cover and plastic
- clip combination referred to here and in step 8.
-
- 7. Hold the WDAT-240 board by the top corners and slide it into the expansion
- slot. The WDAT-240's edge connectors (as shown in Figure 2-3) fit into the
- computer's motherboard expansion slot. Press 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.
-
- 8. After the board is seated firmly in the expansion slot socket, secure the
- board using the plastic clip that is on the end of your board. Place the screw
- over the clip and slot cover. Then screw the clip and slot cover to the
- computer case.
-
- 9. Replace the computer cover. Make sure that cables are out of the way and
- not caught between the cover and boards. Check that the cables do not obstruct
- the air flow path from the fan or vents.
-
- 10. Plug the power cord back into your computer and turn the power switch ON.
-
- Your hardware installation is complete.
-
-
- 4
-
- HOW TO HANDLE PROBLEMS
-
- If you had a problem with your system, first re-read the instructions to be
- sure that you followed them correctly. Check that you typed information EXACTLY
- as instructed.
-
- Repeat the procedure a second time to verify that you get the same error, then
- check the next section, "If You Have a Problem."
-
- If You Have a Problem
-
- First check your physical installation. Check for reversed cables, an
- overloaded system power supply, incorrect drive selection, etc.
-
- CAUTION
-
- Turn the power OFF before you open the computer case
- and attempt to reverse the cables, etc. Always use your park
- utility.
-
-
-
- This section lists some common problems and possible solutions to try if you
- have problems when you install your adapter board.
-
- PROBLEM: Winchester or floppy activity LED on front of drive is always
- on.
-
- SOLUTION: Check cable connections. Check that pin 1 is connected to
- pin 1 and, if not, reverse connection. Replace cables. Check whether
- the intelligent storage peripheral or integrated drive has
- malfunctioned.
-
- PROBLEM: "Error Reading Fixed Disk" when starting the system.
-
- SOLUTION: DOS partition not active. See FDISK instructions in your DOS
- manual.
-
- PROBLEM: Floppy drive doesn't respond when reading a diskette.
-
- SOLUTION: Check cable connections. Check that pin 1 is connected to
- pin 1 and, if not, reverse connection. Replace cables. Check whether
- the floppy drive has malfunctioned. Also check jumper settings for
- floppy drives.
-
- PROBLEM: System hangs during multiple sector read or write. DIRQ14
- signal needs to be delayed until ACTIVE signal goes high.
-
- SOLUTION: Check that jumper W1 is set to delay DIRQ14. Pin 1 is connected
- to pin 2 and pins 3 and 4 are open (not connected). This is the
- opposite of the Western Digital default. See Appendix B.
-
- PROBLEM: None of the suggestions seem to help.
-
- SOLUTION: Call your dealer.
-
-
- A
-
- JUMPERS
-
- The WDAT-240 board has jumper blocks at W1 to W4. Adding or removing a jumper
- shorting plug at any of these locations, defines a hardware configurations
- which is different from the default value selected by Western Digital.
-
- Jumper Functions (W1 to W4)
-
- The following list explains the jumper functions.
-
- - W1 sets the hardware interrupt (DIRQ14) value for the hard
- disk
-
- - W2 enables or disables the floppy drive and selects its
- address
-
- - W3 selects the floppy drive speed (single or double)
-
-
- - W4 sets logic ground to chassis
-
- Delay Hardware Time DIRQ14 (W1)
-
- Most hard disks do not require that you delay the DIRQ14. Thus Western Digital
- set this value so that the DIRQ14 signal is passed through to the host computer
- without a delay.
-
- However, some hard disks do require you to delay the DIRQ14 signal until the
- ACTIVE signal goes high. Your hardware manufacturer should tell you when this
- is necessary. See your intelligent storage peripheral or integrated hard disk
- drive manual.
-
- If you do set up your system without changing the DIRQ14 delay time and your
- intelligent storage peripheral or integrated hard disk requires a delay time,
- then your system will hang during a multiple sector read or write.
-
- If your system hangs during a multiple sector read or write, check that jumper
- W1 is set to delay DIRQ14. Pin 1 should be connected to pin 2 and pins 3 and 4
- should be open (not connected). This is the opposite of the Western Digital
- default. See following sections in Appendix B.
-
- **************************************************************************
- JUMPER SETTINGS
- **************************************************************************
-
- The WDAT-240 board contains four jumper blocks, W1 to W4, which define
- peripheral hardware attached to your computer. The various jumper settings are
- listed in Tables A-1 through A-4. The factory default settings are identified
- with "<*>" symbols.
-
- PIN 2 PIN 4
- ┌────────────────┐ CLOSED (Jumper Installed) Pins
- │ O O │ connected (jumpered) plug bar in
- W2 │ │ │ place.
- │ O O │
- └────────────────┘ OPEN Jumper NOT installed
- PIN 1 PIN 3
-
- This set of jumpers selects to enable the floppy drive with a primary address
- at 3F0-3F7.
-
- Figure A-1. Close and Open Jumper Settings
-
-
- Table A-1. (W1) Select Delay Hardware Interrupt DIRQ14
-
- Pins Status Function
-
- 1-2 closed DIRQ14 enabled when active signal is false, delays
- DIRQ14 til ACTIVE goes high
- 3-4 closed* DIRQ14 passed through to host bus, no delay
-
-
- Table A-2. (W2) Select Floppy Drive & Floppy Address
-
- Pins Status Function
-
- 1-2 closed* Floppy enable
- 1-2 open Floppy disable
- 3-4 open* Floppy address 3F0-3F7 (primary)
- 3-4 closed Floppy address 370-377 (secondary)
-
- Table A-3. (W3) Set Floppy Drive Speed*
-
- Pins Status Function
-
- 1-2 closed 2 speed drive (300 & 360 rpm)
- 1-2 open* single speed drive
-
- Table A-4. (W4) Set Ground to Chassis
-
- Pins Status Function
-
- 1-2 closed logic ground connected to chassis
- 1-2 open* logic ground independent of chassis
-
- * Default setting values
- 1-2 (closed) indicates pin 1 connected (jumpered) to pin 2.
- 1-2 (open) indicates pin 1 not connected to pin 2.
-
- **************************************************************************
- HOW TO CHANGE JUMPERS
- **************************************************************************
-
- To change a jumper, you need to either add or remove a tiny jumper plug or bar.
-
- The jumper plugs or bars necessary for the default values are supplied by
- Western Digital. You may need to purchase extra jumper plugs, depending on
- which settings you want to change. The jumper plugs are available at most
- electrical suppliers. A typical jumper plug is Berg P/N 76438-101.
-
- First determine which jumper settings you need to change. These depend on the
- parameters you want to change. Table B-1 to B-4 list the definitions for each
- jumper setting arranged by jumper blocks. Look at Tables A-1 through A-4 and
- locate the correct table. Then change the setting according to the values
- listed in the table.
-
- See the example for exact details.
-
- EXAMPLE
-
- From the information in Chapter 1 and by looking at Table A-2, you see that the
- WDAT-240 board is set for a floppy drive with address 3F0-3F7. If you have a
- system that already has a floppy drive with address 3F0-3F7, then you will have
- to change the WDAT-240's floppy address.
-
-
- You also see from Table A-2 that the default value for the W2 jumper block is
- with pins 3 and 4 (open) not connected and the new value (370-377) will have
- the W2 jumper block with pins 3 and 4 (closed) connected. This requires that
- you obtain a tiny jumper plug (Berg P/N 76438-101).
-
- To change the jumper setting from the default value at W2 with pins 3 and 4
- (open), you take the jumper plug and place it across the W2 jumper block so
- that pins 3 and 4 (closed) are connected.
-
- This changes the WDAT-240 board's floppy drive address from 3F0-3F7 to 370-377.
-
-
- 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.
-
- Doc. No. 79-000413
-
- Western Digital
- 2445 McCabe Way
- Irvine, CA 92714
- (800) 847-6181 (714) 863-0102
- FAX (714) 863-1656 TLX 910-595-1139
- Technical Support (800) 777-4787
- Bulletin Board Support (714) 756-8176
-