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# UNIDENTIFIED
486-25/33 CACHE
Processor 80486DX
Processor Speed 25/33MHz
Chip Set OPTI
Max. Onboard DRAM 32MB
Cache 64/128KB
BIOS AMI
Dimensions 330mm x 218mm
I/O Options 32-bit external memory card slot
NPU Options 4167
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| Reset switch | JP1 | Turbo switch | JP10 |
|-------------------+----------+------------------+----------|
| Speaker | JP2 | Turbo LED | JP11 |
|-------------------+----------+------------------+----------|
| External battery | JP8 | 32-bit external | S1 |
| | | memory card | |
|-------------------+----------+------------------+----------|
| Power LED & | JP9 | | |
| keylock | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | Monitor type select color | JP6 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Monitor type select monochrome | JP6 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | CMOS memory normal operation | JP7 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | CMOS memory clear | JP7 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | CPU speed select switchable at | JP10 | Closed |
| | keyboard | | |
|---+----------------------------------+--------+------------|
| | CPU speed select forced fast | JP10 | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|--------+----------------+------------+----------+----------|
| 1MB | (4) 256K x 9 | NONE | NONE | NONE |
|--------+----------------+------------+----------+----------|
| 2MB | (4) 256K x 9 | (4) 256K x | NONE | NONE |
| | | 9 | | |
|--------+----------------+------------+----------+----------|
| 3MB | (4) 256K x 9 | (4) 256K x | (4) 256K | NONE |
| | | 9 | x 9 | |
|--------+----------------+------------+----------+----------|
| 4MB | (4) 256K x 9 | (4) 256K x | (4) 256K | (4) 256K |
| | | 9 | x 9 | x 9 |
|--------+----------------+------------+----------+----------|
| 4MB | (4) 1M x 9 | NONE | NONE | NONE |
|--------+----------------+------------+----------+----------|
| 5MB | (4) 256K x 9 | (4) 1M x 9 | NONE | NONE |
|--------+----------------+------------+----------+----------|
| 6MB | (4) 256K x 9 | (4) 256K x | (4) 1M x | NONE |
| | | 9 | 9 | |
|--------+----------------+------------+----------+----------|
| 7MB | (4) 256K x 9 | (4) 256K x | (4) 1M x | (4) 256K |
| | | 9 | 9 | x 9 |
|--------+----------------+------------+----------+----------|
| 8MB | (4) 1M x 9 | (4) 1M x 9 | NONE | NONE |
|--------+----------------+------------+----------+----------|
| 9MB | (4) 256K x 9 | (4) 1M x 9 | (4) 1M x | NONE |
| | | | 9 | |
|--------+----------------+------------+----------+----------|
| 10MB | (4) 256K x 9 | (4) 256K x | (4) 1M x | (4) 1M x |
| | | 9 | 9 | 9 |
|--------+----------------+------------+----------+----------|
| 12MB | (4) 1M x 9 | (4) 1M x 9 | (4) 1M x | NONE |
| | | | 9 | |
|--------+----------------+------------+----------+----------|
| 13MB | (4) 256K x 9 | (4) 1M x 9 | (4) 1M x | (4) 1M x |
| | | | 9 | 9 |
|--------+----------------+------------+----------+----------|
| 16MB | (4) 1M x 9 | (4) 1M x 9 | (4) 1M x | (4) 1M x |
| | | | 9 | 9 |
|--------+----------------+------------+----------+----------|
| 16MB | (4) 4M x 9 | NONE | NONE | NONE |
|--------+----------------+------------+----------+----------|
| 32MB | (4) 4M x 9 | (4) 4M x 9 | NONE | NONE |
|------------------------------------------------------------|
| Note:Banks 2 & 3 are used when a 32-bit external memory |
| card is installed at S1. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | T 1 | T2 |
|--------+------------+------------+------------+------------|
| 64KB | (8) 8K x 8 | NONE | (1) 8K x 8 | (1) 8K x 8 |
|--------+------------+------------+------------+------------|
| 128KB | (8) 8K x 8 | (8) 8K x 8 | (1) 8K x 8 | NONE |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | J1 | J2 | J3 | J4 | J5 |
|----------+----------+----------+---------+--------+--------|
| 64KB | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 |
|----------+----------+----------+---------+--------+--------|
| 128KB | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+