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# DATAEXPERT CORPORATION
EISA 486WB
Processor 80486SX/80486DX/ODP486SX
Processor Speed 20/25/33/50MHz
Chip Set OPTI
Max. Onboard DRAM 128MB
SRAM Cache 64/128/256/512KB
BIOS AMI
Dimensions 330.2mm x 218.4mm
I/O Options None
NPU Options 4167
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|---------------------+----------+----------------+----------|
| Power LED & keylock | J1 | Turbo switch | J5 |
|---------------------+----------+----------------+----------|
| Speaker | J2 | Turbo LED | J6 |
|---------------------+----------+----------------+----------|
| Reset switch | J3 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+---------+-----------|
| ยป | Monitor type select color | JP13 | closed |
|---+----------------------------------+---------+-----------|
| | Monitor type select monochrome | JP13 | open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|----------------+---------------------+---------------------|
| 1MB | (4) 256K x 9 | NONE |
|----------------+---------------------+---------------------|
| 2MB | (4) 256K x 9 | (4) 256K x 9 |
|----------------+---------------------+---------------------|
| 4MB | (4) 1M x 9 | NONE |
|----------------+---------------------+---------------------|
| 5MB | (4) 256K x 9 | (4) 1M x 9 |
|----------------+---------------------+---------------------|
| 8MB | (4) 1M x 9 | (4) 1M x 9 |
|----------------+---------------------+---------------------|
| 16MB | (4) 4M x 9 | NONE |
|----------------+---------------------+---------------------|
| 20MB | (4) 1M x 9 | (4) 4M x 9 |
|----------------+---------------------+---------------------|
| 20MB | (4) 4M x 9 | (4) 1M x 9 |
|----------------+---------------------+---------------------|
| 32MB | (4) 4M x 9 | (4) 4M x 9 |
|----------------+---------------------+---------------------|
| 64MB | (4) 16M x 9 | NONE |
|----------------+---------------------+---------------------|
| 128MB | (4) 16M x 9 | (4) 16M x 9 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SRAM JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Jumper | 64KB | 128KB | 256KB | 512KB |
|--------+------------+------------+------------+------------|
| JP4 | pins 2 & 3 | pins 1 & 2 | pins 2 & 3 | pins 1 & 2 |
| | closed | closed | closed | closed |
|--------+------------+------------+------------+------------|
| JP5 | open | open | closed | closed |
|--------+------------+------------+------------+------------|
| JP6 | open | open | open | closed |
|--------+------------+------------+------------+------------|
| JP7 | open | closed | closed | closed |
|--------+------------+------------+------------+------------|
| JP8 | open | closed | closed | closed |
|--------+------------+------------+------------+------------|
| JP9 | open | open | closed | closed |
|--------+------------+------------+------------+------------|
| JP10 | open | open | open | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Cache | Location | TAG | TAG | TAG |
| | SRAM | | (U15) | (U16) | (U17 & |
| | | | | | 18) |
|-------+----------+----------+----------+----------+--------|
| 64KB | (8) 8K x | Banks 0 | (1) 8K x | NONE | (1) |
| | 8 | & 1 | 8 | | 64K x |
| | | | | | 1 |
|-------+----------+----------+----------+----------+--------|
| 128KB | (4) 32K | Bank 0 | (1) 8K x | NONE | (1) |
| | x 8 | | 8 | | 64K x |
| | | | | | 1 |
|-------+----------+----------+----------+----------+--------|
| 256KB | (8) 32K | Banks 0 | (1) 8K x | (1) 8K x | (1) |
| | x 8 | & 1 | 8 | 8 | 64K x |
| | | | | | 1 |
|-------+----------+----------+----------+----------+--------|
| 512KB | (4) 128K | Bank 0 | (1) 32K | NONE | (1) |
| | x 8 | | x 8 | | 64K x |
| | | | | | 1 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU JUMPER CONFIGURATION |
|------------------------------------------------------------|
| CPU | Jumper JP1 | Jumper | Jumper JP3 | JP15 |
| | | JP2 | | |
|----------+-------------+---------+------------+------------|
| ODP486SX | pins 1 & 2 | open | pins 1 & 2 | pins 1 & 2 |
| | and 3 & 4 | | closed | closed |
| | closed | | | |
|----------+-------------+---------+------------+------------|
| 80486DX | pins 1 & 2 | open | pins 2 & 3 | pins 1 & 2 |
| | and 3 & 4 | | closed | closed |
| | closed | | | |
|----------+-------------+---------+------------+------------|
| 80486SX | pins 2 & 3 | closed | open | pins 2 & 3 |
| | closed | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | Jumper JP11 | Jumper JP12 | JP14 |
|---------+---------------+--------------+-------------------|
| 25MHz | open | open | pins 2 & 3 closed |
|---------+---------------+--------------+-------------------|
| 33MHz | open | closed | pins 2 & 3 closed |
|---------+---------------+--------------+-------------------|
| 50MHz | closed | closed | pins 1 & 2 closed |
+------------------------------------------------------------+