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# EISA TECH CORPORATION
386SX
Processor 80386SX
Processor Speed 16/20MHz
Chip Set VLSI
Max. Onboard DRAM 16MB
Cache None
BIOS AMI
Dimensions 330mm x 218mm
I/O Options None
NPU Options 80387SX
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|----------------+----------+---------------------+----------|
| Reset switch | J16 | External battery | J21 |
|----------------+----------+---------------------+----------|
| Turbo switch | J19 | Speaker | J22 |
|----------------+----------+---------------------+----------|
| Turbo LED | J20 | Power LED & keylock | J23 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | Battery select internal | JP2 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Battery select external | JP2 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Pipeline mode enabled | JP3 | Closed |
|---+----------------------------------+--------+------------|
| | Pipeline mode disabled | JP3 | Open |
|---+----------------------------------+--------+------------|
| » | CMOS memory normal operation | JP4 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | CMOS memory clear | JP4 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | CPU ready signal select from | JP6 | pins 1 & 2 |
| | 82C320 | | closed |
|---+----------------------------------+--------+------------|
| | CPU ready signal select from NPX | JP6 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Monitor type select monochrome | JP7 | Open |
|---+----------------------------------+--------+------------|
| | Monitor type select color | JP7 | Closed |
|---+----------------------------------+--------+------------|
| » | Maximum bus amperage select 24mA | JP8 | Closed |
|---+----------------------------------+--------+------------|
| | Maximum bus amperage select 12mA | JP8 | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 |
|-------+-------------+------------+------------+------------|
| 1.5MB | (18) 41256 | (18) 41256 | (2) 256K x | NONE |
| | | | 9 | |
|-------+-------------+------------+------------+------------|
| 2MB | (18) 41256 | (18) 41256 | (2) 256K x | (2) 256K x |
| | | | 9 | 9 |
|-------+-------------+------------+------------+------------|
| 2MB | (18) 411000 | NONE | NONE | NONE |
|-------+-------------+------------+------------+------------|
| 3MB | (18) 41256 | (18) 41256 | (2) 1M x 9 | NONE |
|-------+-------------+------------+------------+------------|
| 4MB | (18) 411000 | (18) | NONE | NONE |
| | | 411000 | | |
|-------+-------------+------------+------------+------------|
| 4.5MB | (18) 411000 | (18) | (2) 256K x | NONE |
| | | 411000 | 9 | |
|-------+-------------+------------+------------+------------|
| 5MB | (18) 411000 | (18) | (2) 256K x | (2) 256K x |
| | | 411000 | 9 | 9 |
|-------+-------------+------------+------------+------------|
| 5MB | (18) 41256 | (18) 41256 | (2) 1M x 9 | (2) 1M x 9 |
|-------+-------------+------------+------------+------------|
| 6MB | (18) 411000 | (18) | (2) 1M x 9 | NONE |
| | | 411000 | | |
|-------+-------------+------------+------------+------------|
| 8MB | (18) 411000 | (18) | (2) 1M x 9 | (2) 1M x 9 |
| | | 411000 | | |
|-------+-------------+------------+------------+------------|
| 8MB | (18) 414000 | NONE | NONE | NONE |
|-------+-------------+------------+------------+------------|
| 8MB | NONE | NONE | (2) 4M x 9 | NONE |
|-------+-------------+------------+------------+------------|
| 9MB | (18) 414000 | (18) 41256 | (2) 4M x 9 | NONE |
|-------+-------------+------------+------------+------------|
| 12MB | (18) 411000 | (18) | (2) 4M x 9 | NONE |
| | | 411000 | | |
|-------+-------------+------------+------------+------------|
| 16MB | (18) 414000 | (18) | NONE | NONE |
| | | 414000 | | |
|-------+-------------+------------+------------+------------|
| 16MB | NONE | NONE | (2) 4M x 9 | (2) 4M x 9 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP5 |
|-------------+----------------------------------------------|
| 512KB | pins 1 & 2, 4 & 5, 7 & 8, 10 & 11, 13 & 14, |
| | 16 & 17 closed |
|-------------+----------------------------------------------|
| 512KB | pins 2 & 3, 5 & 6, 8 & 9, 11 & 12, 14 & 15, |
| | 17 & 18 closed |
|-------------+----------------------------------------------|
| 1MB | pins 1 & 2, 4 & 5, 7 & 8, 10 & 11, 13 & 14, |
| | 16 & 17 closed |
|-------------+----------------------------------------------|
| 1MB | pins 2 & 3, 5 & 6, 8 & 9, 11 & 12, 14 & 15, |
| | 17 & 18 closed |
|-------------+----------------------------------------------|
| 1.5MB | pins 1 & 2, 4 & 5, 7 & 8, 10 & 11, 13 & 14, |
| | 16 & 17 closed |
|-------------+----------------------------------------------|
| 2MB | pins 1 & 2, 4 & 5, 7 & 8, 10 & 11, 13 & 14, |
| | 16 & 17 closed |
|-------------+----------------------------------------------|
| 2MB | pins 1 & 2, 4 & 5, 7 & 8, 10 & 11, 13 & 14, |
| | 16 & 17 closed |
|-------------+----------------------------------------------|
| 3MB | pins 1 & 2, 4 & 5, 7 & 8, 10 & 11, 13 & 14, |
| | 16 & 17 closed |
|-------------+----------------------------------------------|
| 4MB | pins 1 & 2, 4 & 5, 7 & 8, 10 & 11, 13 & 14, |
| | 16 & 17 closed |
|-------------+----------------------------------------------|
| 4.5MB | pins 1 & 2, 4 & 5, 7 & 8, 10 & 11, 13 & 14, |
| | 16 & 17 closed |
|-------------+----------------------------------------------|
| 5MB | pins 1 & 2, 4 & 5, 7 & 8, 10 & 11, 13 & 14, |
| | 16 & 17 closed |
|-------------+----------------------------------------------|
| 5MB | pins 1 & 2, 4 & 5, 7 & 8, 10 & 11, 13 & 14, |
| | 16 & 17 closed |
|-------------+----------------------------------------------|
| 6MB | pins 1 & 2, 4 & 5, 7 & 8, 10 & 11, 13 & 14, |
| | 16 & 17 closed |
|-------------+----------------------------------------------|
| 8MB | pins 1 & 2, 4 & 5, 7 & 8, 10 & 11, 13 & 14, |
| | 16 & 17 closed |
|-------------+----------------------------------------------|
| 8MB | pins 1 & 2, 4 & 5, 7 & 8, 10 & 11, 13 & 14, |
| | 16 & 17 closed |
|-------------+----------------------------------------------|
| 8MB | pins 2 & 3, 5 & 6, 8 & 9, 11 & 12, 14 & 15, |
| | 17 & 18 closed |
|-------------+----------------------------------------------|
| 9MB | pins 1 & 2, 4 & 5, 7 & 8, 10 & 11, 13 & 14, |
| | 16 & 17 closed |
|-------------+----------------------------------------------|
| 12MB | pins 1 & 2, 4 & 5, 7 & 8, 10 & 11, 13 & 14, |
| | 16 & 17 closed |
|-------------+----------------------------------------------|
| 16MB | pins 1 & 2, 4 & 5, 7 & 8, 10 & 11, 13 & 14, |
| | 16 & 17 closed |
|-------------+----------------------------------------------|
| 16MB | pins 2 & 3, 5 & 6, 8 & 9, 11 & 12, 14 & 15, |
| | 17 & 18 closed |
|------------------------------------------------------------|
| Note:Each line in this table corresponds to same line in |
| the above DRAM configuration table. |
+------------------------------------------------------------+