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# MULTI-TECH SYSTEMS, INC.
900
Processor 80286
Processor Speed 6/10MHz
Chip Set Unidentified
Video Chip Set None
Maximum Onboard Memory 1MB
Maximum Video Memory None
Cache None
BIOS Award
Dimensions 355mm x 304mm
I/O Options None
NPU Options 80287
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| Speaker | J1 | External battery | J4 |
|-------------------+----------+------------------+----------|
| Power LED & | J2 | | |
| keylock | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|------------------------------------+--------+--------------|
| » | Factory configured - do not | JP1 | Unidentified |
| | alter | | |
|---+--------------------------------+--------+--------------|
| » | Factory configured - do not | U107/3 | Unidentified |
| | alter | | |
|---+--------------------------------+--------+--------------|
| | Monitor type select color | U107/4 | On |
|---+--------------------------------+--------+--------------|
| | Monitor type select monochrome | U107/4 | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|--------+------------+------------+------------+------------|
| 256KB | (9) 41256 | None | None | None |
|--------+------------+------------+------------+------------|
| 512KB | (9) 41256 | (9) 41256 | None | None |
|--------+------------+------------+------------+------------|
| 640KB | (9) 41256 | (9) 41256 | (9) 4164 | (9) 4164 |
|--------+------------+------------+------------+------------|
| 768KB | (9) 41256 | (9) 41256 | (9) 41256 | None |
|--------+------------+------------+------------+------------|
| 1MB | (9) 41256 | (9) 41256 | (9) 41256 | (9) 41256 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP7 | JP8 |
|----------+--------------------+----------------------------|
| 256KB | Pins 2 & 3 closed | Pins 1 & 2, 7 & 8 closed |
|----------+--------------------+----------------------------|
| 512KB | Pins 1 & 2 closed | Pins 1 & 2, 7 & 8 closed |
|----------+--------------------+----------------------------|
| 640KB | Pins 1 & 2 closed | Pins 3 & 4, 9 & 10 closed |
|----------+--------------------+----------------------------|
| 768KB | Pins 2 & 3 closed | Pins 5 & 6, 11 & 12 closed |
|----------+--------------------+----------------------------|
| 1MB | Pins 1 & 2 closed | Pins 5 & 6, 11 & 12 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION |
|------------------------------------------------------------|
| Speed | JP11 |
|----------------------------+-------------------------------|
| 6MHz | Pins 2 & 3 closed |
|----------------------------+-------------------------------|
| 10MHz | Pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIOS SELECTION |
|------------------------------------------------------------|
|Setting | U107/1 | U107/2 | U107/5 | U107/6 |U107/7 |U107/8 |
|--------+--------+--------+--------+--------+-------+-------|
| 27128 | Off | On | On | On | Off | Off |
|--------+--------+--------+--------+--------+-------+-------|
| 27256 | On | Off | Off | Off | On | On |
+------------------------------------------------------------+