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# UNIDENTIFIED
I3U4913
Processor 80386DX/CX486DLC
Processor Speed 33/40MHz
Chip Set UMC
Max. Onboard DRAM 32MB
Cache 32/128KB
BIOS AMI
Dimensions 220mm x 170mm
I/O Options None
NPU Options 80387DX
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| Power LED & | J1 | Turbo LED | J5 |
| keylock | | | |
|-------------------+----------+------------------+----------|
| Reset switch | J3 | External battery | J6 |
|-------------------+----------+------------------+----------|
| Turbo switch | J4 | Speaker | J10 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|------------------------------------+--------+--------------|
| » | PQFP CPU enabled | JP5 | Open |
|---+--------------------------------+--------+--------------|
| | PQFP CPU disabled | JP5 | Closed |
|---+--------------------------------+--------+--------------|
| » | NPU disabled | JP6 | pins 1 & 2 |
| | | | closed |
|---+--------------------------------+--------+--------------|
| | NPU enabled | JP6 | pins 2 & 3 |
| | | | closed |
|---+--------------------------------+--------+--------------|
| » | Monitor type select monochrome | JP9 | Open |
|---+--------------------------------+--------+--------------|
| | Monitor type select color | JP9 | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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) 1M x 9 | (4) 256K x 9 |
|------------------+--------------------+--------------------|
| 8MB | (4) 1M x 9 | (4) 1M x 9 |
|------------------+--------------------+--------------------|
| 16MB | (4) 4M x 9 | NONE |
|------------------+--------------------+--------------------|
| 17MB | (4) 4M x 9 | (4) 256K x 9 |
|------------------+--------------------+--------------------|
| 20MB | (4) 4M x 9 | (4) 1M x 9 |
|------------------+--------------------+--------------------|
| 32MB | (4) 4M x 9 | (4) 4M x 9 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | TAG |
|------------------+--------------------+--------------------|
| 32KB | (4) 8K x 8 | (1) 8K x 8 |
|------------------+--------------------+--------------------|
| 128KB | (4) 32K x 8 | (1) 8K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP3 | JP4 |
|-------------------+--------------------+-------------------|
| 32KB | Open | Open |
|-------------------+--------------------+-------------------|
| 128KB | Closed | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | JP1 | JP2 |
|------------------+--------------------+--------------------|
| 33MHz | pins 1 & 2 closed | pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| 40MHz | pins 1 & 2 closed | pins 1 & 2 closed |
+------------------------------------------------------------+