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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
- and Xenix are registered trademarks of Microsoft Corporation.
-
-
- WD1007A-WAH
-
- User Guide
-
-
- The WD1007A-WAH controller is designed to interface with up to two
- ESDI compatible hard disk drives in an IBM PC AT or compatible
- system. The ESDI drives used with this controller generally have two
- modes of operation, soft sector and hard sector. At this time, the
- WD1007A-WAH offers only the hard sector mode of operation.
- There are two versions of the WD1007A-WAH available. Feature 1
- (F001) has the WD1007A BIOS which will allow low level formatting of
- ESDI type drives using DOS. The Feature 0 (F000) does not have the
- BIOS and will work with AT type systems which have ESDI parameters in
- the system BIOS or for use with the Novell operating system.
-
- NOTE
-
- DO NOT USE THE WD1007A-WAH WITH MFM TYPE HARD DISK DRIVES
- USE ONLY WITH ESDI 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); ESDI hard disk
- drive; screwdriver; MSDOS Version 3.3 or later; WD1007A BIOS or WDFMT
- 2.10 formatting utility; FDISK (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 WD1007A-WAH, 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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- ┌──────────────────────────────────────────────────────────────────┐
- │ ┌J4─────────────┐ ┌J3────────┐ ┌J2─Drive 0 ┌J1─Control───┐ │
- │ └───────────────┘ └──────────┘ └─────────┘ └─────────────┘ │
- │W13∙∙∙ ┌J ∙∙∙W7 ∙∙∙W14 │
- │ │5 ∙∙∙W15 │
- │ └┘ ∙∙∙W5 ∙∙∙W8 │
- │ ∙∙∙W6 W2∙∙∙ ∙∙∙W12 ∙∙∙W9 │
- │ ∙∙∙W4 W1∙∙∙ ∙∙∙W11 │
- │ WD1007A-WAH ∙∙∙W10 │
- └───────────┐ P2 ┌──┐ P1 ∙∙∙W3 ┌───┘
- └┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┘ └┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┘
-
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- Table 1
-
- Jumper Position Function
-
- W1 2-3 Standard: BIOS Address Select (C8000-09FFF)
- W2 2-3
- W3 Jumper Enables BIOS
-
- W1 2-3 BIOS Address Select (CA000-CBFFF)
- W2 1-2
- W3 Jumper Enables BIOS
-
- W1 1-2 BIOS Address Select (CC000-CDFFF)
- W2 2-3
- W3 Jumper Enables BIOS
-
- W1 1-2 BIOS Address Select (CE000-CFFFF)
- W2 1-2
- W3 Jumper Enables BIOS
-
- W8 No Jumper Standard: WD1007 Mode. Firmware forces a
- 10 MHz ESDI drive to 35 sectors per track
- when using the Set Unformatted Bytes per
- Sector command. This mode supports a 1:1
- interleave.
-
- W8 Jumper Allows the WD1007A-WAH to be used as a
- replacement board for the WD1005-WAH without
- reformatting the drive. The controller
- reads the Unformatted Bytes Per Sector from
- the drive.
-
- W9 No Jumper Standard: Chassis Ground Disconnected
-
- W10 No Jumper Standard: Digital Input Register Unlatched
-
- W11 No Jumper Standard: Diskette Change Enable w/FDC
- Option
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- W12 No Jumper Standard: Secondary Address Select (1FX)
-
- W14 No Jumper Standard: Sector Translation Enabled
- Provides physical to logical translation**
-
- W14 Jumper Physical to logical translation disabled.
-
- W15 No Jumper Standard: 4 Bytes ECC
-
- W15 Jumper 7 Bytes ECC
-
- **Because some of the older operating systems can only recognize 17
- sectors per track or a maximum of 1048 cylinders per drive, the
- WD1007A-WAH provides a translation scheme so that ESDI hard disk
- drives with 34-36 sector mode operation can be fully utilized in a PC
- AT.
-
- Hardware Installation
-
- WARNING
- MAKE SURE COMPUTER IS TURNED OFF
- AND POWER IS DISCONNECTED
-
- 1. Verify that your host computer has a at least a 200 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. Do not use the Radial Select Option on your
- drive.
-
- 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 (s).
-
- 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 J5.
-
- 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.