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-
- Western Digital is a registered trademark of Western Digital
- Corporation; IBM PC, AT and XT are registered trademarks of the
- International Business Machines Corporation; MS DOS, OS2 and PC DOS
- are registered trademarks of Microsoft Corporation.
-
- WD1002-27X
- USER GUIDE
-
- Introduction
-
- The WD1002-27X controller is designed for use with RLL type hard disk
- drives only. Consult your drive manual or contact the drive
- manufacturer to determine the drive type.
-
- DO NOT UNDER ANY CIRCUMSTANCES
- CONNECT A RLL CONTROLLER
- TO AN MFM DRIVE
-
- The WD1002-27X is an easy to install, RLL controller, which
- interfaces one or two Winchester disk drives to a single host
- computer. It may be used as either a primary or secondary hard disk
- controller in IBM PC XT or compatible systems.
-
- Installation of the controller requires four steps: 1) Verifying
- BIOS; 2) verifying jumper settings; 3) installing into the host
- computer; 4) formatting the hard disk drives. To complete
- installation you will need the following:
-
- Two hard disk cables (3 if using 2 hard disk drives); RLL drive;
- screwdriver; MSDOS Version 2.0 or later; *DEBUG utility; *FDISK
- utility; *Format utility (*normally included with MSDOS)
-
- Preparation of Controller
-
- WARNING
- HANDLE THE CONTROLLER BY THE ENDS OF THE BOARD
- SOME OF THE CHIPS ARE STATIC SENSITIVE AND DAMAGE
- MAY OCCUR IF THE BOARD IS INCORRECTLY HANDLED
-
-
- Confirming BIOS
-
- At location U12, please confirm that your WD1002-27X BIOS ROM is part
- number 62-000094-followed by any three numbers (this BIOS ROM is
- referred to as Western Digital's Super BIOS). If your controller has
- any other BIOS, contact Technical Support at 1-800-777-4787.
-
- Prepare Controller
-
- Before you can install your WD1002-27X you will need to be certain
- that the jumpers (small shorting plugs) are correctly set.
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- ┌───Drive 0──────────────────────────┐
- │ Data Cable 34pin Control Cable │
- │ ┌──J2──┐ ┌──────J1───────┐ │
- ┌─────┘ └──────┘ └───────────────┘ │
- │ ┌──J3──┐ │
- │ └──────┘ 123 │
- │ Drive 1 ∙∙∙W8 │
- │ Data Cable ∙∙∙W4 │
- │ ∙1 ∙1 │
- │ ∙2 W6 ∙2 ∙∙5 │
- │ W9 ∙3 ∙∙6 │
- │ ┌──BIOS────┐ ∙∙7 │
- │ │ ( ∙∙8 S1 │
- │ └──────U12─┘ ∙1 ∙∙4 │
- │ ∙2 ∙∙3 │
- └─┐ W3 ∙∙2 │
- │ ∙∙1 │
- └─────┐A31 A1┌───────┘
- │ WD1002-27X │
- └┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┘
-
-
- Verify that the host computer contains at least a 135 watt power
- supply. Verify that the jumper settings on the controller board are
- correct. Modification of factory jumper settings is rarely
- necessary. For jumper settings on W3, W4, W6 and W8, see Table 1.
-
- Table 1
- Jumper Settings
-
- Pin
- Jumper Connects Status
- W3 Closed BIOS ROM enabled
- Open BIOS ROM disabled
- W4 1-2 Secondary Address 324 thru 327 hex
- 2-3 Primary Address 320 thru 323 hex (factory
- setting)
- W6 1-2 16 head disk drive configuration
- 2-3 8 head disk drive w/Reduced Write Current
- configuration. (factory setting)
- W8 1-2 Dual controller setting (CA00)
- 2-3 Primary Controller (factory setting) (C800)
-
- Before setting the following jumpers, you will need to know the
- parameters of your RLL drive. For your convenience, we have provided
- a list of the most common drives. You may access the list by
- returning to the previous menu.
-
- IF YOUR DRIVE IS NOT LISTED, YOU WILL NEED TO OBTAIN THE PARAMETERS
- FROM YOUR DRIVE MANUFACTURER OR MANUAL.
-
- If your drive has 4 heads, a formatted capacity of 32 megabytes, and
- fewer than 663 cylinders, the controller jumper settings should be
- set as follows:
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- Table 2
-
- Standard Jumper Settings - 30 Meg Drives/663 Cylinders or Less:
-
- S1-1 Open S1-5 Closed
- S1-2 Open S1-6 Closed
- S1-3 Open S1-7 Open
- S1-4 Open S1-8 Open (AT Mode)
- W-9 Closed
-
- Note: Table 2 jumper settings is the Translation Mode. Some
- versions of DOS or other operating systems will not recognize the 26
- sector per track feature of RLL drives. The Table 2 jumper settings
- translate the configuration characteristics into a 17 sector per
- track format recognized by the Operating System.
-
- WITH TABLE 2 JUMPER SETTINGS, YOU MAY USE THE SIMPLIFIED FORMATTING
- INSTRUCTIONS ON PAGE 4.
-
- DRIVES WITH GREATER THAN 663 CYLINDERS
-
- If your drive has more than 663 cylinders, it is recommended that you
- use the jumper settings in Table 3. With drives having greater than
- 663 cylinders, you MUST use the Dynamic Formatting procedure. (See
- page 7)
-
- Table 3
-
- S1-1 Open S1-5 Open
- S1-2 Open S1-6 Closed
- S1-3 Open S1-7 Open
- S1-4 Open S1-8 Open (AT Mode)
- W-9 Open
-
-
-
- Preparation of Drive
-
- WARNING
- MAKE SURE COMPUTER IS TURNED OFF
- AND POWER IS DISCONNECTED
-
- There are 3 steps in preparing your drive to interface with the
- WD1002-27X Controller.
-
- 1) Power for drive is supplied by host computer through an extra
- connector from its power supply. Verify that the host computer
- contains at least a 135 watt power supply.
-
- 2) The terminating resistor must be present only on the last hard
- disk drive connected. If there are two drives, the terminating
- resistor must be present on the second drive.
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- 3) Drive Select: If the controller cable has a twisted portion
- between two drive connectors, both drives must be jumpered for Drive
- Select 2. If controller cable has no twisted portion, first drive
- select should be 1, second drive select 2.
-
- See your drive manual for drive preparation and installation
- procedures.
-
- Note: The hard disk drive cable is not the same cable used for
- floppy disk drives.
-
- Installation Into Host Computer
-
-
- WARNING
- MAKE SURE COMPUTER IS TURNED OFF
- AND POWER IS DISCONNECTED
-
- Installation of Controller into Host Computer
-
- Remove blank expansion slot bracket and save for future use. The
- screw will be used to hold the controller board into place.
-
- INSTALL CONTROLLER INTO ANY AVAILABLE SLOT EXCEPT SLOT 8
-
- Connect the 34-pin (wide control cable) connector to J1 on the
- controller board. Make sure that Pin 1 of the cable connector goes
- to Pin 1 on the controller board. Pin 1 of the cable connector is
- typically located on the color coded side of the cable.
-
- Connect the 20-pin (data cable) to J2 (Drive 0 Data Connector) on the
- controller board. Make sure that Pin 1 on the cable is connected to
- Pin 1 on the controller board.
-
- If a second drive is being installed, connect the Drive 1 data cable
- to J3.
-
- Verify that the disk drive(s) is(are) installed properly. This
- includes correct placement of drive select jumpers and drive
- terminator installation. Refer to the disk drive installation manual
- for further information. DO NOT USE THE RADIAL SELECT OPTION.
-
- Install the drive(s) per manufacturer's instructions.
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- 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.
-