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# UNIDENTIFIED
SW-386SX
Processor 80386SX
Processor Speed 16/20MHz
Chip Set Intel
Max. Onboard DRAM 8MB
Cache None
BIOS AMI/Phoenix
Dimensions 330mm x 218mm
I/O Options None
NPU Options 80387SX
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------+----------+-------------------+----------|
| External battery | J1 | Turbo switch | J23 |
|------------------+----------+-------------------+----------|
| Turbo LED | J21 | Power LED & | J24 |
| | | keylock | |
|------------------+----------+-------------------+----------|
| Reset switch | J22 | Speaker | J25 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | Turbo switch enabled | J23 | Open |
|---+----------------------------------+--------+------------|
| | Turbo switch disabled | J23 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP1 | Open |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | CMOS memory normal operation | JP2 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | CMOS memory clear | JP2 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | BIOS type select AMI | JP4 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | BIOS type select Phoenix | JP4 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Monitor type select color | JP5 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Monitor type select monochrome | JP5 | pins 2 & 3 |
| | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION (TYPE A) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|---------+-------------+-------------+-----------+----------|
| 512KB | (18) 41256 | NONE | NONE | NONE |
|---------+-------------+-------------+-----------+----------|
| 1MB | (18) 41256 | (18) 41256 | NONE | NONE |
|---------+-------------+-------------+-----------+----------|
| 2MB | (18) 41256 | (18) 41256 | (2) 256K | (2) 256K |
| | | | x 9 | x 9 |
|------------------------------------------------------------|
| Note:Type A -- base memory = banks 0 & 1 and extended |
| memory = banks 2 & 3. Type B - base memory = banks 2 |
| & 3 and extended memory = banks 0 & 1. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION (TYPE B) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|----------+-------------+-----------+-----------+-----------|
| 512KB | (2) 256K x | NONE | NONE | NONE |
| | 9 | | | |
|----------+-------------+-----------+-----------+-----------|
| 1MB | (2) 256K x | (2) 256K | NONE | NONE |
| | 9 | x 9 | | |
|----------+-------------+-----------+-----------+-----------|
| 2MB | (2) 1M x 9 | NONE | NONE | NONE |
|----------+-------------+-----------+-----------+-----------|
| 4MB | (2) 1M x 9 | (2) 1M x | NONE | NONE |
| | | 9 | | |
|----------+-------------+-----------+-----------+-----------|
| 8MB | (2) 1M x 9 | (2) 1M x | (2) 1M x | (2) 1M x |
| | | 9 | 9 | 9 |
|------------------------------------------------------------|
| Note:Type A -- base memory = banks 0 & 1 and extended |
| memory = banks 2 & 3. Type B - base memory = banks 2 |
| & 3 and extended memory = banks 0 & 1. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Type | JP9 |
|-----------------+------------------------------------------|
| Type A | pins 1 & 2, 3 & 4, 5 & 6, 7 & 8, 9 & 10, |
| | 11 & 12, 13 & 14, 15 & 16, 17 & 18, 19 & |
| | 20, 21 & 22, 23 & 24 closed |
|-----------------+------------------------------------------|
| Type B | pins 1 & 3, 2 & 4, 5 & 7, 6 & 8, 9 & 11, |
| | 10 & 12, 13 & 15, 14 & 16, 17 & 19, 18 & |
| | 20, 21 & 23, 22 & 24 closed |
|------------------------------------------------------------|
| Note:Type A -- base memory = banks 0 & 1 and extended |
| memory = banks 2 & 3. Type B - base memory = banks 2 |
| & 3 and extended memory = banks 0 & 1. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM MODE CONFIGURATION |
|------------------------------------------------------------|
| Mode | JP21 | JP22 |
|------------------+--------------------+--------------------|
| F1 | pins 1 & 2 closed | pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| F4 | pins 1 & 2 closed | pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| W01 | pins 2 & 3 closed | pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| W02 | pins 2 & 3 closed | pins 2 & 3 closed |
+------------------------------------------------------------+