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# UNIDENTIFIED
OPTI 386 DX
Processor 80386DX/CX486DLC
Processor Speed 33/40MHz
Chip Set Opti
Max. Onboard DRAM 32MB
Cache 64/128/256KB
BIOS AMI
Dimensions 330mm x 218mm
I/O Options None
NPU Options 80387DX/CX487DLC
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|---------------------+----------+----------------+----------|
| External battery | J1 | Turbo LED | JP12 |
|---------------------+----------+----------------+----------|
| Power LED & keylock | J18 | Reset switch | SW1 |
|---------------------+----------+----------------+----------|
| Speaker | J19 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|-------------------------------+--------+-------------------|
| » | CMOS memory normal | JP3 | pins 2 & 3 closed |
| | operation | | |
|---+---------------------------+--------+-------------------|
| | CMOS memory clear | JP3 | pins 1 & 2 closed |
|---+---------------------------+--------+-------------------|
| » | Factory configured-do not | JP4 | N/A |
| | alter | | |
|---+---------------------------+--------+-------------------|
| » | Factory configured-do not | JP7 | N/A |
| | alter | | |
|---+---------------------------+--------+-------------------|
| » | Factory configured do not | JP11 | N/A |
| | alter | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE SELECT |
|------------------------------------------------------------|
| Type | JP5 | JP13 |
|--------------------+-------------------+-------------------|
| CX486DLC | Closed | Closed |
|--------------------+-------------------+-------------------|
| 80386DX | Open | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CLOCK SPEED SELECT |
|------------------------------------------------------------|
| Speed | JP1 | JP2 |
|-------------------+--------------------+-------------------|
| 33MHz | Closed | Closed |
|-------------------+--------------------+-------------------|
| 40MHz | Open | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP6 | JP8 | JP9 | JP10 | JP17 | JP18 |
|-------+--------+--------+--------+-------+--------+--------|
| 64KB | Open | Open | Open | Pins | Open | Open |
| | | | | 2 & 3 | | |
|-------+--------+--------+--------+-------+--------+--------|
| 128KB | Closed | Closed | Open | Pins | Open | Closed |
| | | | | 1 & 2 | | |
|-------+--------+--------+--------+-------+--------+--------|
| 256KB | Closed | Closed | Closed | Pins | Closed | Closed |
| | | | | 2 & 3 | | |
|------------------------------------------------------------|
| Note:All pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 |
|------------------+--------------------+--------------------|
| 8MB | (4) 1M x 9 | (4) 1M x 9 |
|------------------+--------------------+--------------------|
| 16MB | (4) 4M x 9 | NONE |
|------------------+--------------------+--------------------|
| 32MB | (4) 4M x 9 | (4) 4M x 9 |
+------------------------------------------------------------+