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# UNIDENTIFIED
386SX-16 SYSTEM
Processor 80286/80386SX
Processor Speed 16MHz
Chip Set Headland
Video Chip Set Ahead
Maximum Onboard 4MB
Memory
Maximum Video 1MB
Memory
Cache None
BIOS Phoenix
Dimensions 340mm x 300mm
I/O Options Floppy drive interface, IDE interface,
parallel port, serial port, VGA port
NPU Options 80287/80387SX
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| IDE interface LED | HDD2 | Parallel port | J7 |
|-------------------+----------+------------------+----------|
| Floppy drive | J2 | VGA port | J8 |
| interface | | | |
|-------------------+----------+------------------+----------|
| IDE interface | J4 | External battery | JP3 |
|-------------------+----------+------------------+----------|
| Serial port | J6 | Reset switch | JP4 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|-------------------------------------+-------+--------------|
| » | Factory configured - do not | JP2 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | JP5 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| | Parallel port enabled | JP11 | Closed |
|---+---------------------------------+-------+--------------|
| | Parallel port disabled | JP11 | Open |
|---+---------------------------------+-------+--------------|
| | Serial port enabled | JP12 | Closed |
|---+---------------------------------+-------+--------------|
| | Serial port disabled | JP12 | Open |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | JP16 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| | CGA emulation IRQ2 disabled | JP300 | Open |
|---+---------------------------------+-------+--------------|
| | CGA emulation IRQ2 enabled | JP300 | Closed |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | JP303 | Unidentified |
| | 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 |
|------------------+--------------------+--------------------|
| 4MB | (2) 1M x 9 | (2) 1M x 9 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VIDEO MEMORY CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|--------+------------+------------+------------+------------|
| 256KB | (2) 44256 | None | None | None |
|--------+------------+------------+------------+------------|
| 512KB | (2) 44256 | (2) 44256 | None | None |
|--------+------------+------------+------------+------------|
| 1MB | (2) 44256 | (2) 44256 | (2) 44256 | (2) 44256 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VIDEO MEMORY JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP301 | JP302 |
|--------------------+-------------------+-------------------|
| 256KB | Open | Open |
|--------------------+-------------------+-------------------|
| 512KB | Open | Closed |
|--------------------+-------------------+-------------------|
| 1MB | Closed | Closed |
+------------------------------------------------------------+