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1991-05-17
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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.
WD1003-WA2
User Guide
The WD1003-WA2 controller is designed to interface with up to two
Winchester ST506/ST412 hard disk drives and up to two floppy disk
drives in an IBM PC AT or compatible system and will support drives
with up to 16 read/write heads and 2048 cylinders. Each drive may be
a different configuration.
The WD1003-WA2 can operate in computer systems with bus speeds up to
8MHz. The WD1003-WA2 REV E044 can operate in systems with bus speeds
up to 12MHz. If you do not know your system's bus speed, contact
your system manufacturer. Bus speed and clock speed are not the same
number.
Installation of the controller requires three steps: 1) verifying
jumper settings; 2) installing into the host computer; 3) formatting
the hard disk drives. To complete installation, you will need the
following:
Two hard disk cables (3 if using 2 hard disk drives); one 34 pin
floppy drive cable (a daisy chain type cable if using two floppy disk
drives); Winchester hard disk drive; floppy disk drive; screwdriver;
MSDOS Version 2.0 or later; IBM Advanced Diagnostic diskette (or
similar program for IBM compatibles); System Diagnostic Diskette (or
equivalent); FDISK and 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
Before you can install your WD1003-WA2, you will need to be certain
that the jumpers (small shorting plugs) are correctly set. Refer to
Table 1 for correct jumper settings. Modification of factory jumper
settings is rarely necessary. Modify jumpers only under the
direction of a qualified individual; i.e. your dealer.
┌──LED─────────────────────────────────────────────────────────────┐
│ ┌─J6 J3┐ ┌J4 ┌J5┌J1 │
│ └─┘ ││ ││ ││ ││ │
│ 1 2 3 └┘ └┘ ││ ││ │
│ E ∙ ∙ ∙ ││ ││ │
│ E ∙ ∙ ∙ └┘ └┘ │
│ 4 5 6 ┌──────┐ ∙E7 │
│ │ U10 │ ┌U26┐ ∙E8 │
│ WD1003-WA2 └──────┘ └───┘ ∙E9 │
└───────────────────────────────┐ ┌──┐ ┌───┘
└┴┴┴┴┴┴┴┴┴┴┘ └┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┘
Table 1
WD1003-WA2 Jumper Settings
Pin
Connects Description
DO NOT MOVE PRIMARY ADDRESS JUMPERS UNLESS YOUR
OPERATING SYSTEM IS CONFIGURED TO ACCEPT TWO HARD
DISK CONTROLLERS. CERTAIN OPERATING SYSTEMS SUPPORT
TWO CONTROLLERS IN THE SAME SYSTEM. IBM DOS AND MANY
IBM-COMPATIBLE OPERATING SYSTEMS DO NOT SUPPORT THIS
FEATURE
E2-E3 Standard factory setting. Selects primary addresses.
E5-E6 Standard factory setting. Selects primary addresses.
E1-E2 Selects secondary addresses for floppy disk drive.
E4-E5 Selects secondary addresses for hard disk drive.
E7-E8 Standard factory setting. Supports 360 RPM floppy
disk drives.
E8-E9 Jumper in this position selects 300 RPM floppy
disk drives.
Hardware Installation
WARNING
MAKE SURE COMPUTER IS TURNED OFF
AND POWER IS DISCONNECTED
1. Verify that your host computer has a 135 watt power supply. If
the disk drive(s) is(are) being installed internally, it is best to
locate the controller in the nearest available expansion slot to the
drive.
2. Remove the blank expansion slot bracket. Put the bracket away
and save it for possible future use. The screw will be used to hold
the new controller in place.
3. 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. Verify proper setting
of drive select switches for drive select 1 or 2. Refer to your
system owner's manual for information about proper drive termination
and select switches.
NOTE
THE CABLES FOR THE HARD DISK DRIVE AND FLOPPY
DISK DRIVES ARE NOT THE SAME.
DO NOT USE A FLOPPY CABLE ON A HARD DISK DRIVE.
CONSULT YOUR DISTRIBUTOR IF YOU ARE UNABLE TO
DISTINGUISH BETWEEN THE CABLE TYPES.
4. Attach 34-pin control connector pin 1 to J5 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.
5. Connect control cable to drive.
6. Attach 20-pin data connector to J4 (Drive C or 1).
7. Attach 20-pin data connector to J3 (Drive D or 2).
8. Connect data cables to drives.
9. Attach 34-pin floppy cable connector to J1. Connect cable to
floppy drive.
10. Attach Winchester activity LED connector to J6.
11. Install controller board into the expansion slot. Make sure that
the board is seated properly by pressing down on both ends of the
board. Secure the board with the bracket screw.
12. Remove or disable any other floppy controller in your system.
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.