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# OMNITEL, INC.
386SX Rev. B
Processor 80386SX
Processor Speed 20/25MHz
Chip Set OPTI
Max. Onboard DRAM 16MB
Cache 16/32/64KB
BIOS MR
Dimensions 330.2mm x 218.4mm
I/O Options None
NPU Options 80387SX
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------+----------+-------------------+----------|
| External battery | JP1 | Turbo switch | JP15 |
|------------------+----------+-------------------+----------|
| Turbo LED | JP13 | Speaker | JP16 |
|------------------+----------+-------------------+----------|
| Reset switch | JP14 | Power LED & | JP17 |
| | | keylock | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|------------------------------+---------+-------------------|
| » | Battery select internal | JP10 | pins 2 & 3 closed |
|---+--------------------------+---------+-------------------|
| | Battery select external | JP10 | pins 1 & 2 closed |
|---+--------------------------+---------+-------------------|
| » | Diagnostics disabled | JP12 | Open |
|---+--------------------------+---------+-------------------|
| | Diagnostics enabled | JP12 | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|------+-------------+-------------+------------+------------|
| 1MB | (2) 256K x | (2) 256K x | NONE | NONE |
| | 9 | 9 | | |
|------+-------------+-------------+------------+------------|
| 2MB | (2) 256K x | (2) 256K x | (2) 256K x | (2) 256K x |
| | 9 | 9 | 9 | 9 |
|------+-------------+-------------+------------+------------|
| 3MB | (2) 256K x | (2) 256K x | (2) 1M x 9 | NONE |
| | 9 | 9 | | |
|------+-------------+-------------+------------+------------|
| 4MB | (2) 1M x 9 | (2) 1M x 9 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 5MB | (2) 256K x | (2) 256K x | (2) 1M x 9 | (2) 1M x 9 |
| | 9 | 9 | | |
|------+-------------+-------------+------------+------------|
| 6MB | (2) 1M x 9 | (2) 1M x 9 | (2) 1M x 9 | NONE |
|------+-------------+-------------+------------+------------|
| 8MB | (2) 1M x 9 | (2) 1M x 9 | (2) 1M x 9 | (2) 1M x 9 |
|------+-------------+-------------+------------+------------|
| 9MB | (2) 256K x | (2) 256K x | (2) 4M x 9 | NONE |
| | 9 | 9 | | |
|------+-------------+-------------+------------+------------|
| 10MB | (2) 1M x 9 | (2) 4M x 9 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 12MB | (2) 1M x 9 | (2) 1M x 9 | (2) 4M x 9 | NONE |
|------+-------------+-------------+------------+------------|
| 16MB | (2) 4M x 9 | (2) 4M x 9 | NONE | NONE |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| 16KB | 1 & 2 | 1 & 2 | 1 & 2 | Open | Open | 1 & 2 |
|------+--------+--------+--------+---------+--------+-------|
| 32KB | 1 & 2 | 2 & 3 | 1 & 2 | Closed | Open | 2 & 3 |
|------+--------+--------+--------+---------+--------+-------|
| 64KB | 2 & 3 | 2 & 3 | 2 & 3 | Open | Closed | 2 & 3 |
|------------------------------------------------------------|
| Note:Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 16KB | (2) 8K x 8 | NONE |
|------------------+--------------------+--------------------|
| 32KB | (2) 8K x 8 | (2) 8K x 8 |
|------------------+--------------------+--------------------|
| 64KB | (2) 32K x 8 | NONE |
|------------------------------------------------------------|
| Note:TAG is factory installed and cannot be altered. |
+------------------------------------------------------------+