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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-RA2
User Guide
The WD1003-RA2 controller is designed to interface with up to two
floppy disk drives and up to two Winchester ST506/ST412 RLL type hard
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. With the 2, 7 RLL encoding feature
of the WD1003-RAH, up to 50% more data can be compacted onto a
certified RLL hard disk drive using a 26 sectors per track format.
There are two versions of the WD1003-RA2 available. The Feature 000
(F000) is for non-translation operation only. The Feature 001 (F001)
is for translation operation only (standard 30 megabyte drives).
NOTE
DO NOT USE THE WD1003-RA2 WITH MFM TYPE HARD DISK DRIVES
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-RA2, 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-RA2 └──────┘ └───┘ ∙E9 │
└───────────────────────────────┐ ┌──┐ ┌───┘
└┴┴┴┴┴┴┴┴┴┴┘ └┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┘
Table 1
Jumper Position Function
E1 E2-E3 Standard factor setting. Selects primary
E2 addresses, 1F0 through 1F7 hex, for the hard
E3 disk controller. Do not modify the primary
address jumper unless your operating system
is configured to accept more than two hard
disk drives. Also, verify that E5 and E6 are
connected if E2 and E3 are jumpered.
E1-E2 Selects secondary addresses, 170 through 177
hex, for the hard disk controller. Also
verify that E4 and E5 are connected if E1
and E2 are jumpered.
E4 E5-E6 Standard factory setting. Selects primary
E5 addresses, 3F0 through 3F7 hex, for the
E6 floppy disk controller. Do not modify the
primary address jumper unless your operating
system is configured to accept more than two
hard disk drives. Also verify that E2 and E3
are connected if E5 and E6 are jumpered.
E4-E5 Selects secondary addresses, 370 through 377
hex, for the floppy disk controller. Also
verify that E1 and E2 are connected if E4
and E5 are jumpered.
E7 E7-E8 Standard factory setting. Supports 300 or
E8 360 RPM floppy disk drives.
E9
E8-E9 Selects dual speed spindle 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.
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 0).
7. Attach 20-pin data connector to J3 (Drive D or 1).
8. Connect data cables to drives.
9. Attach 34-pin floppy cable connector to J1.
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
when installing a WD1003-RA2. It is NOT possible to disable the
floppy controller on the WD1003-RA2.
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.