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# OMNITEL, INC.
486-25
Processor 80486DX
Processor Speed 25MHz
Chip Set OPTI
Max. Onboard DRAM 16MB
Cache 64/128KB
BIOS Omnitel
Dimensions 355mm x 304mm
I/O Options None
NPU Options 4167
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------+------------+-----------------+----------|
| External battery | J1 | Power LED & | J26 |
| | | keylock | |
|------------------+------------+-----------------+----------|
| Turbo LED | J11/pins 1 | Reset switch | J31 |
| | & 2 | | |
|------------------+------------+-----------------+----------|
| Speaker | J25 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|------------------------------+---------+-------------------|
| » | Password enabled | J43 | Closed |
|---+--------------------------+---------+-------------------|
| | Password disabled | J43 | Open |
|---+--------------------------+---------+-------------------|
| » | External cache enabled | J50 | Open |
|---+--------------------------+---------+-------------------|
| | External cache disabled | J50 | Closed |
|---+--------------------------+---------+-------------------|
| » | POST enabled | J51 | Closed |
|---+--------------------------+---------+-------------------|
| | POST disabled | J51 | Open |
|---+--------------------------+---------+-------------------|
| » | Battery select internal | J52 | pins 1 & 2 closed |
|---+--------------------------+---------+-------------------|
| | Battery select external | J52 | pins 2 & 3 closed |
|---+--------------------------+---------+-------------------|
| » | BIOS type select 27256 | J60 | pins 2 & 3 closed |
|---+--------------------------+---------+-------------------|
| | BIOS type select 27512 | J60 | pins 1 & 2 closed |
|------------------------------------------------------------|
| Note:The location of jumpers J50 & J51 are unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|------+-------------+-------------+------------+------------|
| 1MB | (4) 256K x | NONE | NONE | NONE |
| | 9 | | | |
|------+-------------+-------------+------------+------------|
| 2MB | (4) 256K x | (4) 256K x | NONE | NONE |
| | 9 | 9 | | |
|------+-------------+-------------+------------+------------|
| 3MB | (4) 256K x | (4) 256K x | (4) 256K x | NONE |
| | 9 | 9 | 9 | |
|------+-------------+-------------+------------+------------|
| 4MB | (4) 256K x | (4) 256K x | (4) 256K x | (4) 256K x |
| | 9 | 9 | 9 | 9 |
|------+-------------+-------------+------------+------------|
| 4MB | (4) 1M x 9 | NONE | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 5MB | (4) 256K x | (4) 1 M x 9 | NONE | NONE |
| | 9 | | | |
|------+-------------+-------------+------------+------------|
| 6MB | (4) 256K x | (4) 256K x | (4) 1M x 9 | NONE |
| | 9 | 9 | | |
|------+-------------+-------------+------------+------------|
| 7MB | (4) 256K x | (4) 256K x | (4) 256K x | (4) 1M x 9 |
| | 9 | 9 | 9 | |
|------+-------------+-------------+------------+------------|
| 8MB | (4) 1M x 9 | (4) 1M x 9 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 9MB | (4) 256K x | (4) 1M x 9 | (4) 1M x 9 | NONE |
| | 9 | | | |
|------+-------------+-------------+------------+------------|
| 10MB | (4) 256K x | (4) 256K x | (4) 1M x 9 | (4) 1M x 9 |
| | 9 | 9 | | |
|------+-------------+-------------+------------+------------|
| 12MB | (4) 1M x 9 | (4) 1M x 9 | (4) 1M x 9 | NONE |
|------+-------------+-------------+------------+------------|
| 13MB | (4) 256K x | (4) 1M x 9 | (4) 1M x 9 | (4) 1M x 9 |
| | 9 | | | |
|------+-------------+-------------+------------+------------|
| 16MB | (4) 1M x 9 | (4) 1M x 9 | (4) 1M x 9 | (4) 1M x 9 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 64KB | (8) 8K x 8 | NONE |
|------------------+--------------------+--------------------|
| 128KB | (8) 8K x 8 | (8) 8K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | J44 | J45 | J46 | J47 | J48 |
|----------+----------+----------+---------+--------+--------|
| 64KB | Open | Open | 1 & 2 | 1 & 2 | 1 & 2 |
|----------+----------+----------+---------+--------+--------|
| 128KB | Closed | Closed | 2 & 3 | 2 & 3 | 2 & 3 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+