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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-RAH
-
- User Guide
-
-
- The WD1003-RAH controller is designed to interface with 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.
-
- NOTE
-
- DO NOT USE THE WD1003-RAH WITH MFM TYPE HARD DISK DRIVES
-
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- 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); Winchester hard
- 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-RAH, 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.
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- ┌──LED──────────────────────────────Drive 2─Drive 1─Control────────┐
- │ ┌─J6 ∙∙∙W6 ┌─J3──┐ ┌─J2─┐ ┌───J1───┐ │
- │ └─┘ 123 ┌U3─┐ └─────┘ └────┘ └────────┘ │
- │ ∙∙∙W4 └───┘ │
- │ 123 W2 1 2 1∙W5 │
- │ ∙ ∙ W1 ∙ ∙ 2∙ │
- │ 1 2 ┌──────┐ ┌──┐ 3∙ ┌──┐ │
- │ │ U8 │ └U9┘ 1∙W3 U12┘ │
- │ WD1003-RAH └──────┘ 2∙ │
- └───────────────────────────────┐ ┌──┐ ┌───┘
- └┴┴┴┴┴┴┴┴┴┴┘ └┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┘
-
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- Table 1
-
- Jumper Position Function
-
- W1 1-2 Standard factory setting. Status read is
- latched. Used for IBM PC AT if Winchester
- activity LED is connected to J6.
-
- Open Status read is not latched. Activity LED
- turns on during drive access. W5 must be
- jumpered 2 to 3. Used for Compaq hosts.
-
- W2 Open Standard factory setting. Selects primary
- addresses, 1F0 through 1F7 and 3F0 through
- 3F7 hex. Do not modify the primary address
- jumper unless your BIOS operating system is
- configured to accept more than two hard disk
- drives.
-
- 1-2 Selects secondary addresses, 170 through 177
- and 370 through 377 hex.
-
- W3 Open This configuration used with WD11C00C-22 at
- board location U8 or if W5 is jumpered 1 to
- 2
-
- 1-2 Required only on early units with WD11C00-22
- at board location U8 and W5 is jumpered 1 to
- 2. DO NOT JUMPER WITH THE WD11C00C-22
- INSTALLED.
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- W4 2-3 Standard factory setting. No translation for
- drive 0.
-
- 1-2 Enables translation for drive 0. Translation
- is only available for 615 cylinders and four
- headed drives. In translation mode, the
- controller translates the 26 physical
- sectors per track into 17 sectors. The extra
- sectors are "translated" into logical heads.
- To use the translation mode, select through
- the Setup program a 615 cylinder and six
- head drive type. (This is drive type 3 for
- IBM Personal Computer AT users. Not all AT-
- compatible systems use the same drive tables
- as IBM.) This configuration must be used
- when running an operating system or applica-
- tion program which requires a 17 sector per
- track disk drive.
-
- W5 2-3 Standard factory setting. WG and drive
- select lines only enabled when drive is
- accessed. This configuration also provides
- power up and down protection.
-
- 1-2 WG and drive select lines are disabled
- during power up reset and when +5V power
- supply drops below approximately +4.15V.
-
- W6 2-3 Standard factory setting. No translation
- for drive 1.
-
- 1-2 Enables translation for drive 1. Translation
- is only available for 615 cylinders and four
- headed drives. In translation mode, the
- controller translates the 26 physical
- sectors per track into 17 sectors. The extra
- sectors are "translated" into logical heads.
- To use the translation mode, select through
- the Setup program a 615 cylinder and six
- head drive type. (This is drive type 3 for
- IBM PC AT users. Not all AT-compatible
- systems use the same drive tables as IBM).
- This configuration msut be used when running
- an operating system or application program
- which requires a 17 sector per track disk
- drive.
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- 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 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.
-
- 5. Connect control cable to drive.
-
- 6. Attach 20-pin data connector to J2 (Drive C or 0).
-
- 7. Attach 20-pin data connector to J3 (Drive D or 1).
-
- 8. Connect data cables to drives.
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- 9. Attach Winchester activity LED connector to J6.
-
- 10. 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.
-
- 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.