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# WESTERN DIGITAL CORPORATION
WD286-WDM2
Processor 80286
Processor Speed 12.5MHz
Chip Set Faraday
Max. Onboard 16MB
DRAM
Cache None
BIOS AMI
Dimensions 330mm x 218mm
I/O Options Parallel port, serial porst (2), PS/2 mouse
port, floppy drive interface, ST506/412
interface, video interface, IDE interface
NPU Options 80287
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| IDE interface | J5 | Floppy drive | J16 |
| (optional) | | interface | |
|-------------------+----------+------------------+----------|
| Hard drive access | J10 | ST506/412 drive | J17 |
| LED | | control | |
|-------------------+----------+------------------+----------|
| Reset switch | J11 | Serial port 1 | J19 |
|-------------------+----------+------------------+----------|
| ST506/412 data | J12 | Serial port 2 | J20 |
| (Drive 0) | | | |
|-------------------+----------+------------------+----------|
| ST506/412 data | J13 | Video interface | J21 |
| (Drive 1) | | | |
|-------------------+----------+------------------+----------|
| Power LED & | J14 | PS/2 mouse port | J22 |
| keylock | | | |
|-------------------+----------+------------------+----------|
| Parallel port | J15 | Speaker | J24 |
| (LPT1) | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | Factory configured - do not | W2 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | W4 | Open |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | W6 | Open |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | W7 | pins 1 & 2 |
| | alter | | closed |
|---+----------------------------------+--------+------------|
| » | Floppy drive IRQ6 enabled | W8 | Closed |
|---+----------------------------------+--------+------------|
| | Floppy drive IRQ6 disabled | W8 | Open |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | W9 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Keyboard configuration XT | W12 | Closed |
| | compatible | | |
|---+----------------------------------+--------+------------|
| | Keyboard configuration AT | W12 | Open |
| | compatible | | |
|---+----------------------------------+--------+------------|
| » | Video IRQ9 enabled | W13 | Closed |
|---+----------------------------------+--------+------------|
| | Video IRQ9 disabled | W13 | Open |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | W14 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | W15 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | W16 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Mouse IRQ12 enabled | W17 | Closed |
|---+----------------------------------+--------+------------|
| | Mouse IRQ12 disabled | W17 | Open |
|---+----------------------------------+--------+------------|
| » | LPT1 (J15) IRQ7 enabled | W19 | Closed |
|---+----------------------------------+--------+------------|
| | LPT1 (J15) IRQ7 disabled | W19 | Open |
|---+----------------------------------+--------+------------|
| » | COM2 (J20) IRQ3 enabled | W20 | Closed |
|---+----------------------------------+--------+------------|
| | COM2 (J20) IRQ3 disabled | W20 | Open |
|---+----------------------------------+--------+------------|
| » | COM1 (J19) IRQ4 enabled | W21 | Closed |
|---+----------------------------------+--------+------------|
| | COM1 (J19) IRQ4 disabled | W21 | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 1MB | (2) 256K x 9 | (2) 256K x 9 |
|------------------+--------------------+--------------------|
| 2MB | (2) 1M x 9 | NONE |
|------------------+--------------------+--------------------|
| 4MB | (2) 1M x 9 | (2) 1M x 9 |
|------------------+--------------------+--------------------|
| 8MB | (2) 4M x 9 | NONE |
|------------------+--------------------+--------------------|
| 10MB | (2) 1M x 9 | (2) 4M x 9 |
|------------------+--------------------+--------------------|
| 16MB | (2) 4M x 9 | (2) 4M x 9 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VIDEO JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Internal video only |
|------------------------------------------------------------|
|Monitor type |SW1/1 |SW1/2 |SW1/3 |SW1/4 |SW1/5 | W18 |
|-----------------+------+------+------+------+------+-------|
|Monochrome | Off | Off | On | Off | Off |Closed |
|-----------------+------+------+------+------+------+-------|
|CGA-40 columns | On | Off | Off | On | Off | Open |
|-----------------+------+------+------+------+------+-------|
|CGA-80 columns | Off | Off | Off | On | Off | Open |
|-----------------+------+------+------+------+------+-------|
|EGA-200 lines | On | On | On | Off | Off | Open |
|-----------------+------+------+------+------+------+-------|
|EGA-350/480 lines| Off | On | On | Off | Off | Open |
|------------------------------------------------------------|
| Internal video as primary-color/External video as |
| secondary-monochrome |
|------------------------------------------------------------|
|Color monitor |SW1/1 |SW1/2 |SW1/3 |SW1/4 |SW1/5 | W18 |
|type | | | | | | |
|-----------------+------+------+------+------+------+-------|
|CGA-40 columns | On | Off | Off | On | Off | Open |
|-----------------+------+------+------+------+------+-------|
|CGA-80 columns | Off | Off | Off | On | Off | Open |
|-----------------+------+------+------+------+------+-------|
|EGA-200 lines | On | On | On | Off | Off | Open |
|-----------------+------+------+------+------+------+-------|
|EGA-350/480 lines| Off | On | On | Off | Off | Open |
|------------------------------------------------------------|
| Internal video as secondary-color/External video as |
| primary-monochrome |
|------------------------------------------------------------|
|Color monitor |SW1/1 |SW1/2 |SW1/3 |SW1/4 |SW1/5 | W18 |
|type | | | | | | |
|-----------------+------+------+------+------+------+-------|
|CGA-40 columns | On | On | On | On | Off | Open |
|-----------------+------+------+------+------+------+-------|
|CGA-80 columns | Off | On | On | On | Off | Open |
|-----------------+------+------+------+------+------+-------|
|EGA-200 lines | On | Off | On | On | Off | Open |
|-----------------+------+------+------+------+------+-------|
|EGA-350/480 lines| Off | Off | On | On | Off | Open |
|------------------------------------------------------------|
| Internal video as primary-monochrome/External video as |
| secondary-color |
|------------------------------------------------------------|
|Color monitor |SW1/1 |SW1/2 |SW1/3 |SW1/4 |SW1/5 | W18 |
|type | | | | | | |
|-----------------+------+------+------+------+------+-------|
|CGA-40 columns | On | Off | On | Off | Off | Open |
|-----------------+------+------+------+------+------+-------|
|CGA-80 columns | Off | Off | On | Off | Off | Open |
|------------------------------------------------------------|
| Internal video as secondary-monochrome/External video as |
| primary-color |
|------------------------------------------------------------|
|Color monitor |SW1/1 |SW1/2 |SW1/3 |SW1/4 |SW1/5 | W18 |
|type | | | | | | |
|-----------------+------+------+------+------+------+-------|
|CGA-40 columns | On | On | Off | On | Off | open |
|-----------------+------+------+------+------+------+-------|
|CGA-80 columns | Off | On | Off | On | Off | open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| HARD DRIVE CONFIGURATION |
|------------------------------------------------------------|
| Drive type | W1 | W3 | W5 | W10 | W11 | W22 |
|------------+-------+-------+-------+-------+-------+-------|
| ST506/412 |Closed |Closed |Closed | Open | Open | Open |
|------------+-------+-------+-------+-------+-------+-------|
| IDE | Open | Open | Open |Closed |Closed |Closed |
|------------+-------+-------+-------+-------+-------+-------|
| External | Open | Open | Open | Open | Open | Open |
|------------------------------------------------------------|
|Note:An external hard drive may be used secondary to the |
|ST506/412 with the ST506/412 jumper |
| |
|settings. |
+------------------------------------------------------------+