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# UNIDENTIFIED
VLSI 89402-1
Processor 80286
Processor Speed 12MHz
Chip Set VLSI
Video Chip Set None
Maximum Onboard Memory 4MB
Maximum Video Memory None
Cache None
BIOS AMI/Award
Dimensions 330mm x 218mm
I/O Options None
NPU Options 80287
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|----------------+----------+---------------------+----------|
| Turbo LED | JP10 | Power LED & keylock | JP15 |
|----------------+----------+---------------------+----------|
| Turbo switch | JP11 | External battery | JP17 |
|----------------+----------+---------------------+----------|
| Speaker | JP14 | Reset switch | JP21 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|-------------------------------------+-------+--------------|
| | Monitor type select color | JP4 | Closed |
|---+---------------------------------+-------+--------------|
| | Monitor type select monochrome | JP4 | Open |
|---+---------------------------------+-------+--------------|
| | Turbo enabled | JP11 | Closed |
|---+---------------------------------+-------+--------------|
| | Turbo disabled & switchable | JP11 | Open |
| | through keyboard (CRTL, ALT, | | |
| | +/-) | | |
|---+---------------------------------+-------+--------------|
| | ROM wait state select 2 wait | JP9 | Closed |
| | states | | |
|---+---------------------------------+-------+--------------|
| | ROM wait state select 1 wait | JP9 | Open |
| | state | | |
|---+---------------------------------+-------+--------------|
| » | Battery type select internal | JP16 | Closed |
|---+---------------------------------+-------+--------------|
| | Battery type select external | JP16 | Open |
|---+---------------------------------+-------+--------------|
| » | BIOS type select 27128 | JP18 | Open |
|---+---------------------------------+-------+--------------|
| | BIOS type select 27256 | JP18 | Closed |
|---+---------------------------------+-------+--------------|
| » | Fast mode enabled | JP19 | Closed |
|---+---------------------------------+-------+--------------|
| | Fast mode disabled | JP19 | Open |
|---+---------------------------------+-------+--------------|
| | Wait state select 0 wait states | JP20 | Closed |
|---+---------------------------------+-------+--------------|
| | Wait state select 1 wait state | JP20 | Open |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | JP22 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | JP23 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| | Parity check disabled | JP24 | Pins 1 & 2 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| | Parity check enabled | JP24 | Pins 2 & 3 |
| | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|-------+-------------+------------+------------+------------|
| 512KB | (18) 41256 | None | None | None |
|-------+-------------+------------+------------+------------|
| 512KB | None | None | (2) 256K x | None |
| | | | 9 | |
|-------+-------------+------------+------------+------------|
| 640KB | (18) 41256 | (18) 4164 | None | None |
|-------+-------------+------------+------------+------------|
| 1MB | (18) 41256 | (18) 41256 | None | None |
|-------+-------------+------------+------------+------------|
| 1MB | None | None | (2) 256K x | (2) 256K x |
| | | | 9 | 9 |
|-------+-------------+------------+------------+------------|
| 2MB | None | None | (2) 1M x 9 | None |
|-------+-------------+------------+------------+------------|
| 2MB | (18) 411000 | None | None | None |
|-------+-------------+------------+------------+------------|
| 4MB | (18) 411000 | (18) | None | None |
| | | 411000 | | |
|-------+-------------+------------+------------+------------|
| 4MB | None | None | (2) 1M x 9 | (2) 1M x 9 |
|------------------------------------------------------------|
| Note: The location of banks 0, 1, 2 & 3 are unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP1 | JP2 | JP3 |
|--------------+---------------+--------------+--------------|
| 512KB | Closed | Closed | Closed |
|--------------+---------------+--------------+--------------|
| 640KB | Closed | Open | Closed |
|--------------+---------------+--------------+--------------|
| 1MB | Closed | Closed | Open |
|--------------+---------------+--------------+--------------|
| 2MB | Closed | Open | Open |
|--------------+---------------+--------------+--------------|
| 4MB | Open | Closed | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION |
|------------------------------------------------------------|
| Speed | JP12 |
|-------------------------------+----------------------------|
| 6/12MHz | Open |
|-------------------------------+----------------------------|
| 8/12MHz | Closed |
+------------------------------------------------------------+