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# MULTI-TECH SYSTEMS, INC.
MT386SBC
Processor 80386SX
Processor 25MHz
Speed
Chip Set Headland
Max. Onboard 16MB
DRAM
Cache None
BIOS Phoenix
Dimensions 315mm x 111mm
I/O Options Floppy drive interface, IDE interface, parallel
port, serial ports (2), VGA port
NPU Options 80387SX
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|---------------------+----------+----------------+----------|
| Reset switch | CN1 | Serial port 1 | P3 |
|---------------------+----------+----------------+----------|
| IDE interface LED | J11 | Serial port 2 | P4 |
|---------------------+----------+----------------+----------|
| Turbo LED | J12 | Front panel | P5 |
| | | connector | |
|---------------------+----------+----------------+----------|
| IDE interface | P1 | VGA port | P7 |
|---------------------+----------+----------------+----------|
| Floppy drive | P2 | Parallel port | P8 |
| interface | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | Pipeline mode enabled | J2 | Closed |
|---+----------------------------------+--------+------------|
| | Pipeline mode disabled | J2 | Open |
|---+----------------------------------+--------+------------|
| » | NPU asynchronous | J3 | Open |
|---+----------------------------------+--------+------------|
| | NPU synchronous with CPU | J3 | Closed |
|---+----------------------------------+--------+------------|
| » | IDE interface enabled | J4 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | IDE interface disabled | J4 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | COM1 DCD hardware reset disabled | J6 | Open |
|---+----------------------------------+--------+------------|
| | COM1 DCD hardware reset enabled | J6 | Closed |
|---+----------------------------------+--------+------------|
| » | Parallel port unidirectional | J7 | pins 2 & 3 |
| | (for printer) | | closed |
|---+----------------------------------+--------+------------|
| | Parallel port bidirectional | J7 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | IRQ9 connected to AT bus | J10 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | IRQ9 connected to VGA port | J10 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | J15 | N/A |
| | alter. | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | J16 | N/A |
| | alter. | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 1MB | (2) 256K x 9 | (2) 256K x 9 |
|------------------+--------------------+--------------------|
| 2MB | (2) 1M x 9 | NONE |
|------------------+--------------------+--------------------|
| 4MB | (2) 1M x 9 | (2) 1M x 9 |
|------------------+--------------------+--------------------|
| 8MB | (2) 4M x 9 | NONE |
|------------------+--------------------+--------------------|
| 16MB | (2) 4M x 9 | (2) 4M x 9 |
+------------------------------------------------------------+