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# FIRST INTERNATIONAL COMPUTER, INC.
386SX-16/20V
Processor 80386SX
Processor Speed 16/20MHz
Chip Set Symphony
Max. Onboard DRAM 8MB
Cache None
BIOS AMI/Award/Phoenix
Dimensions 330mm x 218mm
I/O Options None
NPU Options 80387SX
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|----------------+----------+---------------------+----------|
| Turbo LED | J13 | Reset switch | J15 |
|----------------+----------+---------------------+----------|
| Speaker | J14 | Power LED & keylock | J16 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper/Switch | Position |
|-------------------------------+---------------+------------|
| » | Monitor type select | J2 | pins 2 & 3 |
| | monochrome | | closed |
|---+---------------------------+---------------+------------|
| | Monitor type select color | J2 | pins 1 & 2 |
| | | | closed |
|---+---------------------------+---------------+------------|
| | 640K to 1M DRAM | J5 | pins 2 & 3 |
| | re-mapping disabled | | closed |
|---+---------------------------+---------------+------------|
| | Memory access 2 wait | J8 | pins 1 & 2 |
| | states/ I/O select 6 wait | | closed |
| | states | | |
|---+---------------------------+---------------+------------|
| | Memory access 1 wait | J8 | pins 2 & 3 |
| | state/ I/O select 4 wait | | closed |
| | states | | |
|---+---------------------------+---------------+------------|
| | NPU enabled | J9 | pins 1 & 2 |
| | | | closed |
|---+---------------------------+---------------+------------|
| | NPU disabled | J9 | pins 2 & 3 |
| | | | closed |
|---+---------------------------+---------------+------------|
| » | NPU mode select | J10 | pins 1 & 2 |
| | synchronous with CPU | | closed |
| | clock | | |
|---+---------------------------+---------------+------------|
| | NPU mode select | J10 | pins 2 & 3 |
| | synchronous with crystal | | closed |
| | installed at OSC1 | | |
|---+---------------------------+---------------+------------|
| | CPU speed select 20MHz | J11 | pins 1 & 2 |
| | | | closed |
|---+---------------------------+---------------+------------|
| | CPU speed select 16MHz | J11 | pins 2 & 3 |
| | | | closed |
|---+---------------------------+---------------+------------|
| » | CPU speed select fast | J12 | Open |
|---+---------------------------+---------------+------------|
| | CPU speed select slow | J12 | pins 2 & 3 |
| | | | closed |
|---+---------------------------+---------------+------------|
| | CPU speed select | J12 | pins 1 & 2 |
| | switchable from keyboard | | closed |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | J17 | N/A |
| | not alter | | |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | J18 | N/A |
| | not alter | | |
|---+---------------------------+---------------+------------|
| » | Shadow RAM enabled | SW1/1 | On |
|---+---------------------------+---------------+------------|
| | Shadow RAM disabled | SW1/1 | Off |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | SW1/2 | N/A |
| | not alter | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 | | |
|-------+-------------+------------+------------+------------|
| 1.5MB | (2) 256K x | (2) 256K x | (2) 256K x | NONE |
| | 9 | 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 |
|-------+-------------+------------+------------+------------|
| 3MB | (2) 256K x | (2) 256K x | (2) 1M x 9 | NONE |
| | 9 | 9 | | |
|-------+-------------+------------+------------+------------|
| 4MB | (2) 1M x 9 | (2) 1M x 9 | NONE | NONE |
|-------+-------------+------------+------------+------------|
| 5MB | (2) 256K x | (2) 256K x | (2) 1M x 9 | (2) 1M x 9 |
| | 9 | 9 | | |
|-------+-------------+------------+------------+------------|
| 6MB | (2) 1M x 9 | (2) 1M x 9 | (2) 1M x 9 | NONE |
|-------+-------------+------------+------------+------------|
| 8MB | (2) 1M x 9 | (2) 1M x 9 | (2) 1M x 9 | (2) 1M x 9 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM JUMPER/SWITCH CONFIGURATION |
|------------------------------------------------------------|
| Size | J6 | J7 | SW1/5 | SW1/6 | SW1/7 | SW1/8 |
|--------+--------+--------+--------+--------+-------+-------|
| 512KB | 2 & 3 | 2 & 3 | Off | Off | Off | Off |
|--------+--------+--------+--------+--------+-------+-------|
| 1MB | 2 & 3 | 2 & 3 | On | Off | Off | Off |
|--------+--------+--------+--------+--------+-------+-------|
| 1.5MB | 2 & 3 | 2 & 3 | Off | On | Off | Off |
|--------+--------+--------+--------+--------+-------+-------|
| 2MB | 2 & 3 | 2 & 3 | On | On | Off | Off |
|--------+--------+--------+--------+--------+-------+-------|
| 2MB | 1 & 2 | 1 & 2 | Off | Off | On | On |
|--------+--------+--------+--------+--------+-------+-------|
| 3MB | 2 & 3 | 1 & 2 | Off | On | On | Off |
|--------+--------+--------+--------+--------+-------+-------|
| 4MB | 1 & 2 | 1 & 2 | On | Off | On | On |
|--------+--------+--------+--------+--------+-------+-------|
| 5MB | 2 & 3 | 1 & 2 | On | On | On | Off |
|--------+--------+--------+--------+--------+-------+-------|
| 6MB | 1 & 2 | 1 & 2 | Off | On | On | On |
|--------+--------+--------+--------+--------+-------+-------|
| 8MB | 1 & 2 | 1 & 2 | On | On | On | On |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM WAIT STATE/WRITE SELECT CONFIGURATION |
|------------------------------------------------------------|
| Wait state | Wait select | SW1/3 | SW1/4 |
|---------------+---------------+--------------+-------------|
| 2 | 2 | On | On |
|---------------+---------------+--------------+-------------|
| 2 | 1 | On | Off |
|---------------+---------------+--------------+-------------|
| 1 | 1 | Off | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIOS CONFIGURATION |
|------------------------------------------------------------|
| Size | J3 | J4 |
|------------------+--------------------+--------------------|
| 27128 | pins 1 & 2 closed | pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| 27256 | pins 1 & 2 closed | pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| 27512 | pins 2 & 3 closed | pins 2 & 3 closed |
+------------------------------------------------------------+