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 旼컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� � 旼컴컴40 Pin컴컴컴컴� 旼컴34 Pin컴컴커 � � 읕컴컴컴컴컴컴컴컴컴� 읕컴컴컴컴컴컴켸 � � � � W1 . . W2 � � � � . . . . W3 � � 1 3 1 3 1 2 � � � � � � � � � � � � � � � � � � � � W4 � � . . � � 1 2 � 읕� 旼� 旼컴컴컴컴컴컴컴� 읒좋좋좋좋좋좋좋좋좋� 읒좋좋좋좋좋좋좋좋좋좋좋좋좋좋좋� 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 旼컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� � *=Pin 1 ooooooooooxooooooooo oooooooooooooooo&o � � *oooooooooooooooooo@ @=Pin 40 *oxooooooooooooooo � � J2 (Hard) J1 (Floppy) � � � � x=Pin 5 � � � � � � � � � � � � � � � � To Computer Expansion Slot � 읕� 旼� 旼컴컴컴컴컴컴컴� 읒좋좋좋좋좋좋좋좋좋� 읒좋좋좋좋좋좋좋좋좋좋좋좋좋좋좋� 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 旼컴컴컴컴컴컴컴커 CLOSED (Jumper Installed) Pins � O O � connected (jumpered) plug bar in W2 � � � place. � O O � 읕컴컴컴컴컴컴컴켸 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. 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