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# SAMSUNG ELECTRONICS AMERICA, INC.
SAMSUNG 386SX
Processor 80386SX
Processor 25MHz
Speed
Chip Set Unidentified
Max. Onboard 8MB
DRAM
Cache None
BIOS Phoenix
Dimensions 330mm x 190mm
I/O Options Floppy drive interface, IDE interface, parallel
port, serial ports (2)
NPU Options 80387SX
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|----------------+----------+---------------------+----------|
| Serial port 1 | CN1 | Reset switch | J4 |
|----------------+----------+---------------------+----------|
| Serial port 2 | CN2 | External battery | J5 |
|----------------+----------+---------------------+----------|
| Parallel port | CN3 | IDE interface LED | J6 |
|----------------+----------+---------------------+----------|
| Keyboard | J1 | IDE interface | JP4 |
| connnector | | | |
|----------------+----------+---------------------+----------|
| Turbo switch | J2 | Floppy drive | JP5 |
| | | interface | |
|----------------+----------+---------------------+----------|
| Power LED & | J3 | | |
| keylock | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|------------------------------------+--------+--------------|
| » | BIOS type select 27256 | JP2 | Open |
|---+--------------------------------+--------+--------------|
| | BIOS type select 27512 | JP2 | Closed |
|---+--------------------------------+--------+--------------|
| » | IDE interface enabled | JP6 | Open |
|---+--------------------------------+--------+--------------|
| | IDE interface disabled | JP6 | Closed |
|---+--------------------------------+--------+--------------|
| » | Monitor type select color | JP10 | Closed |
|---+--------------------------------+--------+--------------|
| | Monitor type select monochrome | JP10 | Open |
|---+--------------------------------+--------+--------------|
| » | NPU disabled | NPX | pins 1 & 2 |
| | | | closed |
|---+--------------------------------+--------+--------------|
| | NPU enabled | NPX | pins 2 & 3 |
| | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|-------+-------------+------------+------------+------------|
| 512KB | (2) 256K x | NONE | NONE | NONE |
| | 9 | | | |
|-------+-------------+------------+------------+------------|
| 1MB | (2) 256K x | (2) 256K x | NONE | NONE |
| | 9 | 9 | | |
|-------+-------------+------------+------------+------------|
| 2MB | (2) 256K x | (2) 256K x | (2) 256K x | (2) 256K x |
| | 9 | 9 | 9 | 9 |
|-------+-------------+------------+------------+------------|
| 2MB | (2) 1M x 9 | NONE | NONE | NONE |
|-------+-------------+------------+------------+------------|
| 4MB | (2) 1M x 9 | (2) 1M x 9 | NONE | NONE |
|-------+-------------+------------+------------+------------|
| 8MB | (2) 1M x 9 | (2) 1M x 9 | (2) 1M x 9 | (2) 1M x 9 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| HARD DRIVE CONFIGURATION |
|------------------------------------------------------------|
| Type | JP3 | JP7 |
|------------------------+-----------------+-----------------|
| All other types | Closed | Open |
|------------------------+-----------------+-----------------|
| Miniscribe old version | Open | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PARALLEL PORT CONFIGURATION |
|------------------------------------------------------------|
| Setting | JP8 |
|----------------------------+-------------------------------|
| Enabled | pins 3 & 4 open |
|----------------------------+-------------------------------|
| Disabled | pins 3 & 4 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PARALLEL PORT CONFIGURATION |
|------------------------------------------------------------|
| LPT | JP1 | JP8 |
|------+---------------------------------+-------------------|
| LPT1 | pins 9 & 10 open, pins 11 & 12 | pins 1 & 2 open |
| | closed | |
|------+---------------------------------+-------------------|
| LPT2 | pins 9 & 10 closed, pins 11 & | pins 1 & 2 closed |
| | 12 open | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT 1 CONFIGURATION |
|------------------------------------------------------------|
| Setting | JP8 |
|----------------------------+-------------------------------|
| Enabled | pins 5 & 6 open |
|----------------------------+-------------------------------|
| Disabled | pins 5 & 6 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT 1 CONFIGURATION |
|------------------------------------------------------------|
| COM port | JP1 | JP8 |
|----------+-----------------------------+-------------------|
| COM1 | pins 3 & 4 closed, pins 7 & | pins 7 & 8 open |
| | 8 open | |
|----------+-----------------------------+-------------------|
| COM2 | pins 3 & 4 open, pins 7 & 8 | pins 7 & 8 closed |
| | closed | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT 2 CONFIGURATION |
|------------------------------------------------------------|
| Setting | JP8 |
|----------------------------+-------------------------------|
| Enabled | pins 9 & 10 open |
|----------------------------+-------------------------------|
| Disabled | pins 9 & 10 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT 2 CONFIGURATION |
|------------------------------------------------------------|
| COM port | JP1 | JP8 |
|----------+-----------------------------+-------------------|
| COM1 | pins 1 & 2 closed, pins 5 & | pins 7 & 8 open |
| | 6 open | |
|----------+-----------------------------+-------------------|
| COM2 | pins 1 & 2 open, pins 5 & 6 | pins 7 & 8 closed |
| | closed | |
+------------------------------------------------------------+