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# UNIDENTIFIED
OPTI-486WB (VERSION 2)
Processor 80486SX/80486DX
Processor Speed 33MHz
Chip Set OPTI
Max. onboard DRAM 32MB
Cache 64/128/256/512KB
BIOS AMI
Dimensions 330mm x 218mm
I/O Options None
NPU Options 4167
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| Speaker | J1 | Reset switch | J4 |
|-------------------+----------+------------------+----------|
| Turbo switch | J2 | External battery | J22 |
|-------------------+----------+------------------+----------|
| Power LED & | J3 | Turbo LED | JP1 |
| keylock | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|----------------------------------------+--------+----------|
| » | Monitor type select color | JP12 | Closed |
|---+------------------------------------+--------+----------|
| | Monitor type select monochrome | JP12 | Open |
|---+------------------------------------+--------+----------|
| » | Factory configured - do not alter | JP11 | N/A |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 |
|------------------+--------------------+--------------------|
| 32MB | (4) 4M x 9 | (4) 4M x 9 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | TAG U34 | TAG U35 |
|---------+-------------+-------------+-----------+----------|
| 64KB | (8) 8K x 8 | NONE | NONE | 8K x 8 |
|---------+-------------+-------------+-----------+----------|
| 128KB | (8) 8K x 8 | (8) 8K x 8 | NONE | 8K x 8 |
|---------+-------------+-------------+-----------+----------|
| 256KB | (8) 32K x 8 | NONE | NONE | 8K x 8 |
|---------+-------------+-------------+-----------+----------|
| 512KB | (8) 32K x 8 | (8) 32K x 8 | 8K x 8 | 8K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP6 | JP7 | JP8 | JP9 | JP10 |
|--------+---------+------------+---------+---------+--------|
| 64KB | Open | pins 2 & 3 | Open | Open | Open |
|--------+---------+------------+---------+---------+--------|
| 128KB | Closed | pins 2 & 3 | Open | Open | Closed |
|--------+---------+------------+---------+---------+--------|
| 256KB | Closed | pins 2 & 3 | Open | Closed | Closed |
|--------+---------+------------+---------+---------+--------|
| 512KB | Closed | pins 1 & 2 | Closed | Closed | Closed |
|------------------------------------------------------------|
| Note:Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | JP2 | JP3 | JP4 |
|----------+-------------------+-------------------+---------|
| 80486DX | pins 1 & 2 closed | pins 2 & 3 closed | Closed |
|----------+-------------------+-------------------+---------|
| 80486SX | Open | pins 1 & 2 closed | Open |
+------------------------------------------------------------+