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# MULTIBEST INDUSTRIAL & MANUFACTURING, INC.
MB3865
Processor 80386DX
Processor Speed 20/25/33MHz
Chip Set VLSI
Max. Onboard DRAM 32MB
Cache None
BIOS Quadtel
Dimensions 330.2mm x 218.4mm
I/O Options 32-bit external memory card slot
NPU Options 80387/3167
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|---------------+----------+----------------------+----------|
| Reset switch | J1 | Turbo switch | J5 |
|---------------+----------+----------------------+----------|
| Speaker | J2 | External battery | JP1 |
|---------------+----------+----------------------+----------|
| Power LED & | J3 | 32-bit external | S1 |
| keylock | | memory card | |
|---------------+----------+----------------------+----------|
| Turbo LED | J4 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|------------------------------------+--------+--------------|
| » | Battery select external | J6 | pins 1 & 2 |
| | | | closed |
|---+--------------------------------+--------+--------------|
| | Battery select internal | J6 | pins 2 & 3 |
| | | | closed |
|---+--------------------------------+--------+--------------|
| » | Monitor type select color | J7 | Closed |
|---+--------------------------------+--------+--------------|
| | Monitor type select monochrome | J7 | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 |
+------------------------------------------------------------+