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# UNIDENTIFIED
80386 MOTHERBOARD (VER. 3.2)
Processor 80386DX
Processor Speed 16/20/25/30MHz
Chip Set C & T
Video Chip Set None
Maximum Onboard Memory 16MB (8MB on external memory card)
Maximum Video Memory None
Cache Unidentified
BIOS AMI/Award/Phoenix
Dimensions 327mm x 218mm
I/O Options External memory card, cache connector
NPU Options 80287/80387DX
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------+----------+-------------------+----------|
| External battery | JP3 | Turbo LED | JP7 |
|------------------+----------+-------------------+----------|
| Turbo switch | JP4 | Cache memory | JP11 |
| | | connector | |
|------------------+----------+-------------------+----------|
| Power LED & | JP5 | Reset switch | JP12 |
| keylock | | | |
|------------------+----------+-------------------+----------|
| Speaker | JP6 | External memory | SL1 |
| | | card | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|---------------------------------------+-------+------------|
| » | 8042 controller uses 23 pin | JP1 | Pins 1 & 2 |
| | control | | closed |
|---+-----------------------------------+-------+------------|
| | Circuit speed select by pressing | JP1 | Pins 2 & 3 |
| | CTRL, ALT + or - | | closed |
|---+-----------------------------------+-------+------------|
| | Monitor type select color/EGA/VGA | JP2 | Pins 1 & 2 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| | Monitor type select monochrome | JP2 | Pins 2 & 3 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| | Battery type select external | JP3 | Closed |
|---+-----------------------------------+-------+------------|
| | On board battery enabled | JP3 | Pins 1 & 2 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| | On board battery disabled | JP3 | Open |
|---+-----------------------------------+-------+------------|
| | CMOS memory clear | JP3 | Pins 3 & 4 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| » | Factory configured - do not alter | JP8 | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Note: The size of the cache module is unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| NPU SELECTION |
|------------------------------------------------------------|
| Type | JP9 | JP10 |
|--------------------+--------------------+------------------|
| None installed | Pins 1 & 2 closed | Open |
|--------------------+--------------------+------------------|
| 80287 | Pins 1 & 2 closed | Open |
|--------------------+--------------------+------------------|
| 80387 | Pins 2 & 3 closed | Closed |
+------------------------------------------------------------+
IMG IMG 2
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|----------+------------+------------+-----------+-----------|
| 2MB | 1MB | 1MB | None | None |
|----------+------------+------------+-----------+-----------|
| 2MB | None | None | 1MB | 1MB |
|----------+------------+------------+-----------+-----------|
| 8MB | None | None | 4MB | 4MB |
|----------+------------+------------+-----------+-----------|
| 8MB | 4MB | 4MB | None | None |
|----------+------------+------------+-----------+-----------|
| 16MB | 4MB | 4MB | 4MB | 4MB |
|------------------------------------------------------------|
| Note: The location of the banks are unidentified. The |
| size of the chips are unidentified on the main board |
| and memory card. Banks 1 & 2 are located on the main |
| board. Banks 2 & 3 are located on the external memory |
| card. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Setting | J1 | J2 |
|------------------------+-----------------+-----------------|
| No memory installed in | Pins 1 & 2, 4 & | Pins 1 & 2, 4 & |
| main board | 5 closed | 5 closed |
|------------------------+-----------------+-----------------|
| Memory installed on | Pins 2 & 3, 5 & | Pins 2 & 3, 5 & |
| main board | 6 closed | 6 closed |
|------------------------------------------------------------|
| Note: Either 2MB or 8MB will be installed on the memory |
| card. |
+------------------------------------------------------------+