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# NORTHGATE COMPUTER SYSTEMS, INC.
OMNISTATION 286
Processor 80286
Processor Speed 12.5MHz
Chip Set None
Max. Onboard 4MB
DRAM
Cache None
BIOS AMI
Dimensions 330mm x 218mm
I/O Options Bus mouse port, floppy drive interface, IDE
interface, parallel port, proprietary 16-bit
AT expansion slot, serial ports (2), VGA port
NPU Options 80287
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-----------------+----------+--------------------+----------|
| Proprietary | EX1 | Serial port 1 | J9 |
| expansion card | | | |
|-----------------+----------+--------------------+----------|
| Bus mouse port | J4 | Parallel port | J10 |
|-----------------+----------+--------------------+----------|
| Reset switch | J6 | VGA port | J12 |
|-----------------+----------+--------------------+----------|
| Floppy drive | J7 | IDE interface | J14 |
| interface | | | |
|-----------------+----------+--------------------+----------|
| Serial port 2 | J8 | IDE interface LED | J15 |
| | | & keylock | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | Factory configured - do not | W2 | pins 1 & 2 |
| | alter | | closed |
|---+----------------------------------+--------+------------|
| » | Monitor type select monochrome | W3 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Monitor type select color | W3 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Floppy drive interface enabled | W4 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Floppy drive interface disabled | W4 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | W5Z | pins 1 & 2 |
| | alter | | closed |
|---+----------------------------------+--------+------------|
| | NPU type select 12.5MHz | W9 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | NPU type select 6MHz | W9 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | VGA port enabled | W11 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | VGA port disabled | W11 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | IDE interface LED enabled | W12 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | IDE interface LED disabled | W12 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | W15 | pins 1 & 2 |
| | alter | | closed |
|---+----------------------------------+--------+------------|
| » | Bus mouse port enabled (IRQ12) | W16 | Closed |
|---+----------------------------------+--------+------------|
| | Bus mouse port disabled | W16 | Open |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | W17 | Open |
| | alter | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 512KB | (2) 256K x 9 | NONE |
|------------------+--------------------+--------------------|
| 1MB | (2) 256K x 9 | (2) 256K x 9 |
|------------------+--------------------+--------------------|
| 2MB | (2) 1M x 9 | NONE |
|------------------+--------------------+--------------------|
| 2.5MB | (2) 1M x 9 | (2) 256K x 9 |
|------------------+--------------------+--------------------|
| 4MB | (2) 1M x 9 | (2) 1M x 9 |
+------------------------------------------------------------+
IMG IMG 2
+------------------------------------------------------------+
| CONNECTIONS (AT EXPANSION CARD) |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|---------------------+----------+----------------+----------|
| Data access LED | J1 | Turbo LED | J7 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| INTERRUPT JUMPER CONFIGURATION (AT EXPANSION CARD) |
|------------------------------------------------------------|
| Interrupt | J2 | J3 | J4 | J5 | J6 |
|------------+---------+---------+---------+--------+--------|
| IRQ2 | Closed | Open | Open | Open | Open |
|------------+---------+---------+---------+--------+--------|
| IRQ3 | Open | Open | Open | Open | Closed |
|------------+---------+---------+---------+--------+--------|
| IRQ4 | Open | Open | Open | Closed | Open |
|------------+---------+---------+---------+--------+--------|
| IRQ5 | Open | Open | Closed | Open | Open |
|------------+---------+---------+---------+--------+--------|
| IRQ7 | Open | Closed | Open | Open | Open |
+------------------------------------------------------------+