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WDPRODS.TXT
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1989-02-22
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PRODUCTS FOR XT SYSTEMS
HARD DISK CONTROLLERS FOR MFM HARD DISK DRIVES
Reference NOTE 1.
WD1002A-WX1, feature F300R - Half-slot size hard disk controller
card with an ST506/ST412 interface. It supports 2 MFM drives
with up to 16 heads and 1024 cylinders and is jumper
configurable for secondary addressing and default drive tables.
Built in ROM BIOS supports non-standard drive types, virtual
drive formatting, dual drive operation, bad track formatting and
dynamic formatting. This board features a power connector for
filecard applications and it will also operate in AT systems.
Please note that this controller card will be unavailable from
the manufacturer (Western Digital) after March, 1989. Reference
NOTE 2.
WDXT-GEN, feature F300R - Half-slot size hard disk controller
card with an ST506/ST412 interface. It supports 2 MFM hard
disk drives with up to 8 heads and 1024 cylinders. Built-in ROM
BIOS supports non-standard drive types, virtual drive
formatting, dual drive operation, bad track formatting and
dynamic formatting. Please note that this controller card will
be unavailable from the manufacturer (Western Digital) after
March, 1989.
WD1004A-WX1, feature F300R - Half-slot size disk controller
card with an ST506/ST412 interface. It supports 2 MFM drives
with up to 16 heads and 1024 cylinders and is jumper
configurable for secondary addressing and default drive tables.
Built in ROM BIOS supports non-standard drive types, virtual
drive formatting, dual drive operation, bad track formatting and
dynamic formatting. This board features a power connector for
filecard applications and it will also operate in AT systems.
Reference NOTE 2.
WDXT-GEN2, feature F300R - Half-slot size hard disk controller
card with an ST506/ST412 interface. It supports 2 MFM hard disk
drives with up to 8 heads and 1024 cylinders. Built-in ROM BIOS
supports non-standard drive types, virtual drive formatting,
dual drive operation, bad track formatting and dynamic
formatting. Reference NOTE 2.
HARD DISK CONTROLLERS FOR RLL HARD DISK DRIVES
Reference NOTE 2.
WD1002-27X, feature F301R - Half-slot size hard disk controller
card with an ST506/ST412 interface. It supports 2 RLL hard disk
drives with up to 16 heads and 1024 cylinders and is jumper
configurable for secondary addressing and default drive tables.
Built in ROM BIOS supports non-standard drive types, virtual
drive formatting, dual drive operation, bad track formatting and
dynamic formatting. This board features a power connector for
filecard applications and it will also operate in AT systems.
Please note that this controller card will be unavailable from
the manufacturer (Western Digital) after March, 1989. Reference
NOTE 2.
WD1002A-27X, feature 300R - Half-slot size hard disk controller
with an ST506/ST412 interface. It supports 2 RLL drives with up
to 16 heads and 1024 cylinders. Built-in ROM BIOS supports non-
standard drive types, virtual drive formatting, bad track
formatting and dynamic formatting. Please note that this
controller card will be unavailable from the manufacturer
(Western Digital) after March, 1989.
WD1004-27X, feature F301R - Half-slot size hard disk controller
card with an ST506/ST412 interface. It supports 2 RLL hard
disk drives with up to 16 heads and 1024 cylinders and is jumper
configurable for secondary addressing and default drive tables.
Built in ROM BIOS supports non-standard drive types, virtual
drive formatting, dual drive operation, bad track formatting
and dynamic formatting. This board features a power connection
for filecard applications and it will also operate in AT
systems. Reference NOTE 2.
WD1004A-27X, feature F300R - Half-slot size hard disk
controller with an ST506/ST412 interface. It supports 2 RLL
drives with up to 16 heads and 1024 cylinders. Built-in ROM
BIOS supports non-standard drive types, virtual drive
formatting, bad track formatting and dynamic formatting.
NOTE 1: AT&T 6300 - The AT&T 6300 and the AT&T 6300 PLUS
contain system BIOS chips that support the hard disk drive.
When using a Western Digital XT controller card the system will
not "boot." To solve this problem, one of the ROM BIOS chips
must be disabled. To disable the BIOS on your Western Digital
XT controller card, you must remove the jumper at position W-3
or add a jumper at position R-23 (depending on which model of XT
controller you are using).
-2-
NOTE 2: TANDY 1000 SYSTEMS - The WD1002A-WX1, WD1004A-WX1,
WDXT-GEN2 and the WD1004-27X can be modified to operate in
Tandy 1000 series computers, models SX, TX and the original or
"A" version. These computers utilize an interrupt of 2 (IRQ2)
instead of IRQ5, the IBM standard. To modify the WD1002A-WX1 or
the WD1002-27X to operate in these systems, you must cut the
etch between pin 1 and pin 2 at jumper position W-7. Then
solder pin 2 and pin 3 at the position (W-7). To complete the
modification, a jumper must be added to position 7 of switch S-1
(2 rows of 8 pins). PLEASE NOTE THAT ANY PHYSICAL MODIFICATION
TO YOUR WESTERN DIGITAL HARD DISK CONTROLLER VOIDS THE WARRANTY
ON YOUR BOARD. To modify the WD1004A-WX1, WDXT-GEN2 or the
WD1004-27X for your Tandy 1000 system, a zero ohm resister must
be soldered to jumper position W-27. This will change the
interrupt from IRQ5 to IRQ2.
XT CONTROLLERS FOR FLOPPY DISK DRIVES
WD1002A-FOX - Half-slot floppy disk controller for XT or AT
systems. Four versions of the board are available:
Feature F001 supports two floppy disk drives.
Feature F002 supports four floppy disk drives and includes
an optional 37-pin control, data and power connector and
an optional 4-pin power connector.
Feature F003 supports two floppy disk drives and includes
a ROM BIOS that will enable your system to recognize
floppy disk drive that may not be supported by your AT
system ROM BIOS. The optional ROM BIOS will also allow
this controller card to operate high density floppy disk
drives in an XT system.
Feature F004 supports four floppy disk drives and includes
an optional 37-pin control, data and power connector, an
optional 4-pin power connector and a ROM BIOS that will
enable your system to recognize floppy disk drives that
may not be supported by your AT system ROM BIOS. The
optional ROM BIOS will also allow this controller card to
operate high density floppy disk drives in an XT s