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# UNIDENTIFIED
80286-12
Processor 80286
Processor Speed 6/8/10/12MHz
Chip Set Unidentified
Video Chip Set None
Maximum Onboard Memory 1MB
Maximum Video Memory None
Cache None
BIOS Unidentified
Dimensions 330mm x 218mm
I/O Options None
NPU Options 80287
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|---------------------+----------+----------------+----------|
| Speaker | J1 | Reset switch | J4 |
|---------------------+----------+----------------+----------|
| Power LED & keylock | J2 | Turbo LED | JP1 |
|---------------------+----------+----------------+----------|
| External battery | J3 | Turbo switch | JP2 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|------------------------------------+-------+---------------|
| | BIOS type select 27128 | JP3 | Pins 1 & 2 |
| | | | closed |
|---+--------------------------------+-------+---------------|
| | BIOS type select 27256 | JP3 | Pins 2 & 3 |
| | | | closed |
|---+--------------------------------+-------+---------------|
| | Monitor type select color | SW1/3 | On |
|---+--------------------------------+-------+---------------|
| | Monitor type select monochrome | SW1/3 | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Starting address | Bank 0 | Bank 1 |
|-----------+-------------------+--------------+-------------|
| 256KB | 000000H - 03FFFFH | (18) 4164 | (18) 4164 |
|-----------+-------------------+--------------+-------------|
| 512KB | 000000H - 07FFFFH | (18) 41256 | None |
|-----------+-------------------+--------------+-------------|
| 640KB | 000000H - 09FFFFH | (18) 41256 | (18) 4164 |
|-----------+-------------------+--------------+-------------|
| 1MB (A) | 000000H - 07FFFFH | (18) 41256 | (18) 41256 |
|-----------+-------------------+--------------+-------------|
| 1MB (B) | 100000H - 17FFFFH | (18) 41256 | (18) 41256 |
|-----------+-------------------+--------------+-------------|
| 1MB (C) | 000000H - 09FFFFH | (18) 41256 | (18) 41256 |
|-----------+-------------------+--------------+-------------|
| 1MB (D) | 100000H - 15FFFFH | (18) 41256 | (18) 41256 |
|------------------------------------------------------------|
| Note: The location of banks 0 & 1 are unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM SWITCH CONFIGURATION |
|------------------------------------------------------------|
| Size | SW1/1 | SW1/2 | SW1/4 |
|---------------+--------------+--------------+--------------|
| 256MB | On | On | Off |
|---------------+--------------+--------------+--------------|
| 512MB | Off | On | Off |
|---------------+--------------+--------------+--------------|
| 640MB | On | Off | Off |
|---------------+--------------+--------------+--------------|
| 1MB (A) | Off | Off | Off |
|---------------+--------------+--------------+--------------|
| 1MB (B) | Off | Off | Off |
|---------------+--------------+--------------+--------------|
| 1MB (C) | On | Off | On |
|---------------+--------------+--------------+--------------|
| 1MB (D) | On | Off | On |
+------------------------------------------------------------+