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READ THIS FIRST
QUICK REFERENCE GUIDE
WD1007V-MC1
Fixed Hard Disk Controller Board
JANUARY 1989
Radio Frequency Interference Statement
This Western Digital product has been verified to comply with the limits for a
Class B computing device pursuant to subpart J of Part 15 of FCC rules. This
does not guarantee that interference will not occur in individual
installations. Western Digital is not responsible for any television, radio, or
other interference caused by unauthorized modifications of this product.
If interference problems do occur, please consult the system equipment owner's
manual for suggestions. Some of these suggestions include relocation of the
computer system away from the television or radio or placing the computer AC
power connection on a different circuit or outlet.
If you require further information or other technical support, please contact
your authorized dealer.
**************************************************************************
INTRODUCTION
**************************************************************************
You probably have an IBM* PS/2* personal computer and have decided to upgrade
it by adding a larger hard disk drive and a WD1007V-MC1 board.
Or you may already have a WD1007V-MC1 board in your system and you have decided
to add a second hard disk drive. You can use your WD1007V-MC1 board to control
a second hard disk, provided that the WD1007V-MC1 board is the only hard disk
controller in your computer system. Check your system components and verify
that you do not have another hard disk controller before installing a second
hard disk into your system.
Each WD1007V-MC1 board can support two hard disk drives; however, when you
install two controllers into one computer, the PS/2 system design limits you to
a maximum of two fixed hard disk drives.
*IBM and PS/2 are registered trademarks of International Business Machines
Corporation.
This document tells you how you can install your WD1007V-MC1 board and hard
disk drive and then start your system from the hard disk.
Don't be worried. This document will take you through the process, step by
step.
The WD1007V-MC1 board is easy to install. The following is a summary of the
installation steps, which are completely explained in this document.
1. Preliminary: identify drive, set drive configuration
2. Install hardware: drive, board, connect cables
3. Install software: use Reference Diskette,etc.
4. Check installation: start system, use new board & drive
You do not need to disassemble your current hard disk drive nor remove the hard
disk controller. Your other drive will still work after you have installed your
WD1007V-MC1 board and hard disk drive unit.
CAUTION
Handle the controller board by the ends of the board. Some of the chips are
static sensitive and damage may occur if the board is incorrectly handled.
Exception, the PS/2 system will NOT support two of the same type controller.
Therefore, if you already have an ESDI controller installed, you cannot install
a second ESDI controller. If you are replacing an existing controller, then you
need to remove the old controller.
**************************************************************************
ABOUT THIS GUIDE
**************************************************************************
The following term is used in throughout this document.
Reference Diskette - A generic term used to refer to the diskette supplied by a
computer manufacturer, which contains the system configuration program. Used
here the term is capitalized to refer to your manufacturer's diskette.
Other Notations
Angle brackets < > refer to a key. Therefore the symbol <Enter> refers to the
Enter key.
This may be marked differently on your keyboard, typically other notations are
CR> for Carriage Return or RETURN or <Return> for the Return key.
This guide was written using the IBM PS/2 computers as a model. Sometimes
specific examples, such as errors, refer to the IBM error code numbers.
Therefore if you have a PS/2 compatible computer, your error numbers
may be different.
For example on page 6-2, error codes 162, 163, 165, and 166 refer to the IBM
error codes. These numbers may not be the same if you have a PS/2 Micro
Channel* compatible computer.
About Menu Screens:
Because manufacturers are always updating their software, and this installation
guide covers installing WD1007V-MC1 controller boards in many PS/2 compatible
computers, as well as IBM PS/2 computers, the menu screens used here represent
the best available information.
Do not be concerned if your screens don't match those documented here. Always
follow the manufacturer's instructions for their compatible computer (i.e. if
you have an Apricot computer, use the Apricot Reference Diskette).
* Micro Channel is a trademark of International Business Machines Corporation.
1
MICRO CHANNEL ARCHITECTURE
Since Micro Channel Architecture is new and different from XT and AT*
architecture, this section explains some of its basic concepts and the way in
which the Micro Channel architecture implements computer programs.
What is Micro Channel??
Micro Channel is a set of standards, which contain (among other items) hardware
and firmware standards that define the physical arrangement of personal
computer peripheral devices, such as hard disk drives.
POS Register
The POS (Programmable Option Select)register is a basic conceptual shift from
AT and XT technology. In those systems, jumpers and DIP switches told the
computer what type of peripheral hardware was attached. With Micro Channel
architecture, no jumpers or DIP switches are needed on the controller.
*AT is a registered trademark of International Business Machines Corporation.
Instead the system setup program along with a system manufacturer supplied
reference diskette and the POS registers tell the computer what is connected to
the system.
The POS registers present to the system a unique ID number for each adapter
installed. See section ID# below.
CMOS Memory
Micro Channel computers use a CMOS(complementary metal-oxide semiconductor)
memory chip and a battery back-up, so that each PS/2 computer can remember its
own configuration, including which board is in each of its expansion slots.
ID#
Each Micro Channel expansion board has a unique ID# coded into its firmware,
which the PS/2 compares with its CMOS memory. The ID# identifies each Micro
Channel board to files that contain its configuration information. The ID# is
automatically incorporated into the computer's setup software.
Therefore a Micro Channel computer knows what type of board is located in each
expansion slot and can detect when a change is made to the hardware and a
different type board is placed in an expansion slot. See section 165 Error.
Universal Expansion Installation
Since the board ID# is in the computer's setup software, one simple
installation procedure can be used for ANY expansion board, regardless of what
function it performs.
165 Error
If the computer detects a change with the previous ID#, a 165 Error occurs. The
165 Error indicates that the system configuration has been changed.
To correct Error 165, use the Reference Diskette. See Chapter 4 or your
manufacturer's Micro Channel hardware manual for instructions.
The 165 Error does not occur when you place the Western Digital controller into
the same expansion slot as the one that the IBM controller occupied previously.
Besides the 165 Error, other errors are possible when you place a different
board in an expansion slot.
Two beeps indicate that the error is related to and can be corrected by the IBM
Reference Diskette. Among the more frequent errors that occur are the
following: 162, clock; and 163, calendar.
**************************************************************************
DRIVE STANDARDS
**************************************************************************
The ESDI standard defines the interface for hard disk drives connected to
personal computers. The WD1007V-MC1 board works with drives that follow the
ESDI standards.
ESDI
The ESDI interface defines a drive interface that contains a set of standards
that include a relative location for the defect map in a prescribed format.
Block Address
An ESDI controller (WD1007V-MC1) interface does not define the hard disk drive
in the same way an ST506 interface (WD1006V-MC1). Rather than using ST506 type
cylinder information, an ESDI controller uses relative block addresses.
Therefore hard disk drives controlled by an ESDI controller board (WD1007V-MC1)
don't need drive tables.
By eliminating the drive tables and essentially hiding the physical
characteristics of the ESDI drive from the operating system, the relative block
address scheme provides greater flexibility when configuring an ESDI drive and
permits a computer with a Western Digital ESDI controller to be compatible
with most ESDI drives.
ESDI Defect Management
The ESDI specifications define a standard ESDI defect map and locates this map
at the maximum cylinder. The specifications also define a standard format for
this map. The format and location are both a part of the standard ESDI drive
interface.
Standard ESDI Interface
Western Digital uses the standard ESDI interface, but IBM does not define their
drives according to standard ESDI specifications. Therefore you can't use the
IBM Reference Diskette to format an IBM drive with a Western Digital
controller. However, you can use the IBM Reference Diskette, if you have a
Western Digital controller board.
But since you can't use the IBM Reference Diskette to format non-IBM drives
with the IBM controller; you also need to use the Western Digital controller.
Thus, you can use the IBM Reference Diskette when you are using a WD1007V-MC1
controller board with a non-IBM manufactured ESDI disk drive.
2
SOME PRELIMINARY STEPS
Before you begin the actual installation of the hardware and software, there
are some preliminary steps that you need to do.
GATHER SUPPLIES
The installation requires that you gather some tools and supplies before you
begin. You'll need the following items:
screwdriver
PS/2 or Micro Channel compatible computer
space to hold the internal drive
hard disk drive(s)
with ESDI interface
See next section," System Limitations."
interface cables (hard disk cables <B>NOT floppy disk cables)
20-pin data cable (1 or 2)
34-pin control cable (for 1 or 2 drives)
DOS version 3.3 or later or OS/2* or other operating system
IBM Reference Diskette or other configuration diskette
installation manual for PS/2 compatible computer
installation manual for hard disk drive
**************************************************************************
SYSTEM LIMITATIONS
**************************************************************************
Each WD1007V-MC1 board can support two hard disk drives; however, when you
install two controllers into one computer, the PS/2 system design limits you to
a maximum of two fixed hard disk drives.
Thus you can have EITHER one WD1007V-MC1 board with two hard disks attached to
the WD1007V-MC1 board OR one WD1007V-MC1 board and one non-ESDI controller with
only one hard disk attached to each board.
* OS/2 is a trademark of International Business Machines Corporation.
**************************************************************************
YOU CANNOT HAVE TWO WD1007V-MC1 BOARDS EACH HAVING TWO HARD DISKS ATTACHED IN A
PS/2 SYSTEM.
**************************************************************************
Dual Controllers
Mix Controller Types: Although the PS/2 system will support two fixed disk
controllers, it will NOT support two controllers with the same type interface.
Therefore, if you already have an ESDI controller installed, your new
controller cannot have the ESDI interface.
ESDI Always Drive C
If you have one ESDI and one ST506 drive connected to your computer, the Micro
Channel architecture ALWAYS selects the ESDI drive as Drive C, regardless of
the order in which you installed or identified them.
**************************************************************************
IDENTIFY BOARD
**************************************************************************
The WD1007V-MC1 works with ESDI drives. Table 2-1 lists the computers that are
compatible with the WD1007V-MC1 board.
Locate your board in Table 2-1 and make sure that your computer model is
compatible with your controller board.
TABLE 2.1 COMPUTERS COMPATIBLE WITH WD1007V-MC1
COMPUTER
IBM Model 50
IBM Model 50z
IBM Model 60
IBM Model 70/16MHz
IBM Model 70/20MHz
IBM Model 80/16MHz
IBM Model 80/20MHz
Non-IBM computer check with dealer
Space limitations may prevent installing drive unit inside computer case.
Note: The IBM Models 25 & 30 do not support Micro Channel and are therefore
incompatible with the WD1007V-MC1 board; however, you can use Western Digital's
XT controllers in your IBM Models 25 & 30.
**************************************************************************
IDENTIFY DRIVE
**************************************************************************
Since the WD1007V-MC1 board is only compatible with the ESDI drive interface,
BE SURE YOU HAVE AN ESDI DRIVE!!!
Look in the drive manufacturer's literature and check that you have an ESDI
drive interface. Contact the drive vendor to verify current models and revision
level capacity.
When you configure the system, your computer will identify that you have an
ESDI controller installed and tell you its slot location.
Do I Need To Configure Any Jumpers?
No jumpers are set on the WD1007V-MC1 board because the Micro Channel looks at
the hardware installed and knows the configuration of the boards. Micro Channel
can detect address conflicts and move hardware to different addresses using
software.
**************************************************************************
SET HARD DISK DRIVE CONFIGURATION
**************************************************************************
This section "Set Hard Disk Drive Configuration" refers to procedures that you
do to your hard disk drives and not to your WD1007V-MC1 controller. Since the
WD1007V-MC1 board works with many hard disk drives, you need to consult your
drive manufacturer's manual for exact details.
You need to set the configuration for your hard disk drive unit before you
install the unit into your computer. You set your hard disk configuration by
adjusting jumpers, switches, or termination resistors.
Drive Settings
The two settings that you change are:
drive number
drive termination resistor
The exact number of settings that you change depends on your disk drive and
computer.
┌┐ ┌┐ ┌┐ ┌┐ ┌┐ ┌┐
││───────────────││────││ ││───────────────││────││
││───────────────││────││ ││───────────────││────││
││───────────────││────││ ││───────────────││────││
││───────────────││────││ ││───────────────││─XX─││
││───────────────││────││ ││───────────────││─XX─││
└┘ └┘ └┘ └┘ └┘ └┘
Non-twist Cable Twisted Cable
Control Cables
Setting the drive number depends on the type of cable that you use to connect
your drive to your controller board. The two types of cables are listed below.
flat, non-twist (ribbon) cable
flat, twisted (ribbon) cable
First identify which cable you are going to use. Figure 2-1 illustrates the two
types of cables. In the twisted ribbon cable several wires have been cut and
twisted to form new connections.
If you plan to use the existing cable in your computer, you may have to open
the computer case. See your computer manufacturer's instructions.
Set Drive Number (Twisted Cable)
When the 34-pin control cable is a twisted cable, set (jumper) both hard disk
drives for drive select 2. If you have only one hard disk drive, set your
single hard disk drive for drive select 2.
See the drive manufacturer's manual for detailed instructions on how to set the
drive number.
When you install your hardware as explained in Chapter 3, and you have only one
hard disk drive, that single hard disk drive will be placed at the end of the
daisy chain cable. WAIT UNTIL CHAPTER 3 TO ATTACH YOUR HARD DISK DRIVE TO THE
CABLE.
Set Drive Number (Non-twist Cable)
When the 34-pin control cable has NO twisted section, set (jumper) one drive
for drive select 1 (i.e., drive 0) and the other drive for drive select 2
(i.e., drive 1).
When you install your hardware as explained in Chapter 3, the drive set for
drive select 1 (i.e., drive 0) will be placed at the end of the daisy chain
cable. WAIT UNTIL CHAPTER 3 TO ATTACH YOUR HARD DISK DRIVE TO THE CABLE.
Mark the drives, so that you know which drive you set for drive select 1 and
which drive you set for drive select 2. If you have only one drive, set your
single drive for drive select 1 (i.e., drive 0). When you install your hardware
as explained in Chapter 3, place the single hard disk drive unit at the end of
the daisy chain cable.
See the drive manufacturer's manual for instructions on how to set the drive
number.
Note: A daisy chain cable has three connectors. The electrical signal in a
daisy chain configuration moves from one connection to the next in sequence.
Set Drive Termination Resistor
The drive termination resistor must be present only on the drive, which is the
last physical drive installed in a daisy chain configuration. If you have two
hard disk drives, remove the termination resistor from the drive, which will be
attached to the middle connector. See Figure 2-2.
If you have only one fixed hard disk drive, do not change the termination
resistor. Drives are set at the factory as the first hard disk drive (i.e., to
be the only drive in the system).
See the drive manufacturer's manual for instructions on how to remove the
termination resistor.
3
HOW TO INSTALL YOUR HARDWARE
This section tells you how to install the hardware portion of your WD1007V-MC1
controller board. You can install the controller board in any available Micro
Channel compatible expansion slot.
Do not attempt to install your hardware unless you have set the hard disk drive
configuration as explained starting on page 2-6.
The installation requires you to remove the cover from your computer. See your
PS/2 manual for exact instructions on how to remove the cover.
If you are replacing an existing controller, then you also have to remove your
old hard disk controller.
CAUTION
The IBM PS/2 system does NOT support two of the same type controller.
Therefore, if you already have an ESDI controller installed, your new
controller requires another type interface.
If you want two of the same type of hard disk, daisy chain them onto one
WD1007V-MC1 controller board.
1. Turn your computer power switch to OFF.
2. Use a screwdriver to loosen the cover screws. Then remove the computer
cover, so that you can see the expansion slots and internal space to place the
fixed disk drive unit.
This is an IBM limitation. See IBM manual for more information.
3. Place your hard disk drive unit(s) into the computer case and attach to the
case according to the manufacturer's installation instructions.
4. Look and see which expansion slots are empty. Select one that has the same
type of connectors as those on the WD1007V-MC1 board.
Or if you are removing a controller, locate the one which has the old
controller in it. Use this expansion slot.(no 165 error)
Note: You can also install a new fixed hard disk drive on an existing WD1007V-
MC1 controller. See Appendix.
You may have to leave the drive case loose to connect the cables. Look and
determine whether to tighten the connections from the position of the cable
connectors.
5A. If you are removing an old controller, loosen the plastic screw which
holds the old controller board in place. Then slide the old board out of the
expansion slot and remove the cables.
5B. If you are using a "new" expansion slot, loosen the plastic screw that
holds the expansion slot cover you selected in step 4. The plastic screw is
located at the rear. Slide the expansion slot cover up, and remove it.
6. Connect cables to hard disk drive unit. Follow steps A,B,C, and D. These
instructions are for both one or two drives on the same controller.
Cable connectors have an orientation. Pin 1 is not the same as Pin 34. Each
carries a different electrical signal. Therefore your unit will not work
properly, if you do not connect Pin 1 of the cable connector to Pin 1 on the
drive.
Pin 1 of the cable connector is marked and is on the color coded edge of the
cable. Pin 1 on the controller board is shown in Figure 3-2.
┌───────────────┐
│ FIRST DRIVE │───┐ 34 Pin Connector
└───────────────┘──┐│
││
││ (Shortest Cable)
┌───────────────┐ ││
│ SECOND DRIVE │──┘│ 34 Pin Connector
└───────────────┘──┐│
(Termination Resistor ││
Removed) ││ (Longest Cable)
││
││
││
┌─────────────┘│
│ ┌────────────┘
┌────────│─│───┐ 34 Pin Connector
│ J4 │
└──┐ ┌──┘
└┴┴┴┴┴┴┴┴┘
WD1007V-MC1
FIGURE 3-1. DAISY CHAIN CABLE CONNECTORS
A. (for 1 drive only) Connect the 34-pin (wide control cable) connector to the
hard disk drive unit's 34-pin (card edge type) connector. Attach Pin 1 of the
cable to Pin 1 on the hard disk drive connector.
(for 2 drives only) If you are installing two hard disk drives on one
controller, use a daisy chain cable. Connect the end connector on the shorter
cable length to the first drive unit. See Figure 3-1 for daisy chain cable
connections.
The longer length cable is unattached for now.
B. (for 2 drives only) Connect middle 34-pin connector on the shorter length
daisy chain cable to the second hard disk drive unit's 34-pin connector.
Remember: The second hard disk drive is the unit from which you removed the
termination resistor. See page 2-11.
The longer length cable is unattached for now.
C. Connect the 20-pin (data cable) to the first hard disk drive unit's 20-pin
connector. Attach Pin 1 of the cable to Pin 1 on the hard disk drive.
D. (for 2 drives only) Connect the second 20-pin (data cable) to the second
hard disk drive unit's 20-pin connector.
7. Locate the internal four pin power connector(s) on your computer. See your
computer manual. Connect this internal four pin power connector to your new
fixed hard disk drive unit's power connector plug.
(for 2 drives only) If you are installing 2 drives, you need either two
internal power connectors on your computer or you need to split the power
connector. See the manufacturer's manual.
Connect the second drive unit to the second power connector plug.
8. Place the controller board into the expansion slot that you selected in step
4. Slide the edge of the board into the expansion slot at the rear of your
computer and press firmly on the plastic edges of the board as you insert it
into the expansion slot. You will feel the board slip into place and fit
snugly. The WD1007V-MC1 edge connectors fit snugly into the slot. Check that
the board is seated properly, it should NOT wobble freely.
9. After the board is seated firmly in the expansion slot socket, fasten the
end of your board to the computer rear panel. Tighten the plastic screw (which
you loosened in step 5) to the computer chassis.
10. Connect the free end of the 34-pin (wide control cable) connector to J4 on
the WD1007V-MC1 board. Attach Pin 1 of the cable connector to Pin 1 on the
controller board.
Note: Pin 1 on the controller board is shown in Figure 3-2.
FIGURE 3-2. WD1007V-MC1 BOARD
┌─┐
┌───────┐ ┌──J3───┐ ┌──J2────┐ ┌───J4──────┐ ┌──────────────────────┘ │
│ └──┘ └────┘ └────┘ └──┘ │
│ Pin 1 Pin 1 Pin 1 │
│ │
│ │
│ │
└───────────────────────────────────────────────────────────────────────┐ │
└┴┴┴┴┘ └┴┴┴┴┴┴┴┴┴┴┴┴┴┘ └─────┘
Edge Connectors
(To Motherboard)
11. Connect the free end of the 20-pin (data cable) to J2 (first drive data
connector) on the WD1007V-MC1 controller board.
Attach Pin 1 on the cable to Pin 1 on the controller board.
12. (for 2 drives only) If you installed a second hard disk drive, connect the
second 20-pin (data cable) to J3 (second drive data connector) on the WD1007V-
MC1 controller board.
13. Place extra cable lengths so that they are out of the way.
CAUTION
Do NOT pinch the cables when you arrange them inside your computer
case. Do not let the cables lay between the cover and an internal
board. Do not obstruct air flow from fans or vents.
14. Replace the computer cover. Your hardware controller installation is
complete. However, your WD1007V-MC1 controller board is really a complex
circuit composed of both hardware and software, so that while the hardware
installation is complete, you still need to install the software. Proceed to
the next section for the software installation steps.
Tighten hard disk unit(s) to computer case, etc. if not already done so in step
3.