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# UNIDENTIFIED
401 386SX
Processor 80386SX
Processor Speed 16MHz
Chip Set VLSI
Max. Onboard DRAM 8MB
Cache None
BIOS Award
Dimensions 330mm x 218mm
I/O Options None
NPU Options 80387SX
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| Power LED & | JP1 | Turbo switch | JP15 |
| keylock | | | |
|-------------------+----------+------------------+----------|
| Speaker | JP2 | External battery | JP18 |
|-------------------+----------+------------------+----------|
| Reset switch | JP3 or | Turbo LED | JP20 |
| | JP17 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | NPU mode select synchronous with | JP4 | Open |
| | CPU | | |
|---+----------------------------------+--------+------------|
| | NPU mode select synchronous with | JP4 | Closed |
| | oscillator installed at X1 | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP5 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP8 | pins 2 & 3 |
| | alter | | closed |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP9 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Monitor type select color | JP10 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Monitor type select monochrome | JP10 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP11 | Open |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP12 | Open |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP13 | Closed |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP14 | Open |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | BIOS type select 27256 | JP16 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | BIOS type select 27512 | JP16 | pins 1 & 2 |
| | | | 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 | |
|-------+-------------+------------+------------+------------|
| 1MB | (18) 41256 | (18) 41256 | NONE | NONE |
|-------+-------------+------------+------------+------------|
| 1MB | NONE | NONE | (2) 256K x | (2) 256K x |
| | | | 9 | 9 |
|-------+-------------+------------+------------+------------|
| 2MB | (18) 411000 | NONE | NONE | NONE |
|-------+-------------+------------+------------+------------|
| 2MB | NONE | NONE | (2) 1M x 9 | NONE |
|-------+-------------+------------+------------+------------|
| 4MB | (18) 411000 | (18) | NONE | NONE |
| | | 411000 | | |
|-------+-------------+------------+------------+------------|
| 4MB | NONE | NONE | (2) 1M x 9 | (2) 1M x 9 |
|-------+-------------+------------+------------+------------|
| 5MB | (18) 411000 | (18) | (2) 256K x | (2) 256K x |
| | | 411000 | 9 | 9 |
|-------+-------------+------------+------------+------------|
| 6MB | (18) 411000 | (18) | (2) 1M x 9 | NONE |
| | | 411000 | | |
|-------+-------------+------------+------------+------------|
| 8MB | (18) 411000 | (18) | (2) 1M x 9 | (2) 1M x 9 |
| | | 411000 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM JUMPER CONFIGURATION |
|------------------------------------------------------------|
| DRAM mode | Max. | Wait | DRAM | JP6 | JP7 |
| | Pages | States | speed | | |
|------------+---------+------------+--------+-------+-------|
| F4 | 4 | 0 or 1 | 80ns | 2 & 3 | 2 & 3 |
|------------+---------+------------+--------+-------+-------|
| F1 | 1 | 0 or 1 | 100ns | 1 & 2 | 2 & 3 |
|------------+---------+------------+--------+-------+-------|
| W01 | 4 | 1 or 2 | 100ns | 2 & 3 | 1 & 2 |
|------------+---------+------------+--------+-------+-------|
| W02 | 4 | 2 or 3 | 120ns | 1 & 2 | 1 & 2 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+