ALTERNATE SECTOR PINS 1-2 allow you to enable or disable the alternate sector
capability. Install a jumper shunt over these pins to enable the alternate sector, which
reserves one sector per track for bad sector swapping.
TRANSLATION MODE PINS 3-4 open enables Translation Mode on the WD1009V
Controller. Install a jumper shunt on these pins to disable the Translation Mode. Be sure to
check your system capabilities in matching your drive tables before you disable this
feature.
SECTORS PER TRACK PINS 5-6 default setting forces your 10 or 15Mb/s drive to 35 or
53 sectors per track (SPT) mode. Installing a jumper on pins 5-6 activates the Physical
Mode. Physical Mode parameters are determined by the drive jumper settings.
ERROR CORRECTION CODE PINS 7-8 specify the byte size of the error correction code
(ECC). The controller default setting enables a 4-byte ECC. Installing a jumper shunt on
pins 7-8 enables the 7-byte ECC, which is only used if you are performing certain
diagnostics.
CACHEING PINS 9-10 allow you to enable or disable caching. The default setting (no
jumper shunt installed), enables the 64KBytes of multi-segmented adaptive look ahead
caching. Caching increases overall system performance by reading ahead and buffering
the data sectors likely to be used by the host on subsequent read commands.
Install a jumper shunt on pins 9-10 if you want to disable caching. In most cases, it is best
to leave caching enabled. Refer to your software documentation for information on how
caching affects your software performance.
BIOS ADDRESS PINS 11-12 select the primary or secondary BIOS address. Leave the
pins open to select the primary BIOS address (C800:0). If a BIOS address conflict exists,
install a jumper shunt on pins 11-12 to select the secondary BIOS address (CC00:0).
WD1009V BIOS PINS 13-14 allow you to enable or disable the WD1009V BIOS. You most
likely want to enable the WD1009V BIOS, which is the default setting (pins 13-14 open). If
you want to disable the WD1009V BIOS, install a jumper shunt over pins 13- 14.
IRQ PINS 15-16 and 17-18 function together to select the interrupt request (IRQ) address.
Most operating systems work with IRQ 14, which is the default setting.
If no jumper shunts are placed on pins 15-16 and 17-18, then IRQ 14 is selected. If a
jumper shunt is placed on pins 15-16 but not 17-18, IRQ 12 is selected. Leave pins 15-16
open and place a jumper shunt on pins 17-18 to select IRQ 15. If jumper shunts are placed
on both sets of pins, IRQ 11 is selected.
EISA DMA PINS 19-20 allow you to select the Direct Memory Access (DMA) channel in
your EISA system. When EISA DMA mode is enabled, it uses this DMA channel. The
default setting of no jumper shunt installed selects DMA channel 6. Install a jumper shunt
on pins 19-20 to select DMA channel 7.
HARD DISK CONTROLLER I/O ADDRESS PINS 21-22 select either the primary or
secondary hard disk controller I/O address. Leave pins 21-22 open to select the primary
hard disk controller address (1F0-1F7). Install a jumper shunt on pins 21-22 to select the
secondary hard disk controller address (170-177).
HARD DISK CONTROLLER PINS 23-24 enable or disable the hard disk controller. Leave
pins 23-24 open to enable the hard disk controller. Place a jumper shunt on the pins to
disable the hard disk controller.
WD1009-SE2 (http://www.franken-online.de/ymmv)
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