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# ROBOTECH, INC.
GMB-386UN
Processor 80386DX
Processor Speed 33/40MHz
Chip Set UMC
Max. Onboard DRAM 32MB
Cache 32/64/128/256KB
BIOS AMI
Dimensions 254mm x 220mm
I/O Options None
NPU Options 80387DX/3167
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------+----------+-------------------+----------|
| External battery | JP1 | Speaker | JP18 |
|------------------+----------+-------------------+----------|
| Turbo LED | JP16 | Reset switch | JP19 |
|------------------+----------+-------------------+----------|
| Turbo switch | JP17 | Power LED & | JP20 |
| | | keylock | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|------------------------------------+--------+--------------|
| » | CMOS memory normal operation | JP2 | pins 1 & 2 |
| | | | closed |
|---+--------------------------------+--------+--------------|
| | CMOS memory clear | JP2 | pins 2 & 3 |
| | | | closed |
|---+--------------------------------+--------+--------------|
| » | Monitor type select color | JP3 | Closed |
|---+--------------------------------+--------+--------------|
| | Monitor type select monochrome | JP3 | 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) 256K x 9 | (4) 1M x 9 |
|------------------+--------------------+--------------------|
| 8MB | (4) 1M x 9 | (4) 1M x 9 |
|------------------+--------------------+--------------------|
| 16MB | (4) 4M x 9 | NONE |
|------------------+--------------------+--------------------|
| 20MB | (4) 256K x 9 | (4) 1M x 9 |
|------------------+--------------------+--------------------|
| 20MB | (4) 1M x 9 | (4) 256K x 9 |
|------------------+--------------------+--------------------|
| 32MB | (4) 4M x 9 | (4) 4M x 9 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | TAG |
|------------+---------------+---------------+---------------|
| 32KB | (4) 8K x 8 | NONE | (1) 8K x 8 |
|------------+---------------+---------------+---------------|
| 64KB | (4) 8K x 8 | (4) 8K x 8 | (1) 8K x 8 |
|------------+---------------+---------------+---------------|
| 128KB | (4) 32K x 8 | NONE | (1) 8K x 8 |
|------------+---------------+---------------+---------------|
| 256KB | (4) 32K x 8 | (4) 32K x 8 | (1) 32K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION (WRITE BACK) |
|------------------------------------------------------------|
|Size | JP8 | JP9 |JP10 |JP11 |JP12 | JP13 |JP14 | JP15 |
|-----+---------+------+-----+-----+-----+------+-----+------|
|32KB | 2 & 3 | Open |2 & 3|1 & 2|2 & 3| Open |2 & 3| Open |
|-----+---------+------+-----+-----+-----+------+-----+------|
|64KB | 1 & 2 |Closed|2 & 3|2 & 3|1 & 2| Open |2 & 3| Open |
|-----+---------+------+-----+-----+-----+------+-----+------|
|128KB|1 & 2, 3 |Closed|1 & 2|2 & 3|2 & 3|Closed|2 & 3| Open |
| | & 4 | | | | | | | |
|-----+---------+------+-----+-----+-----+------+-----+------|
|256KB|1 & 2, 4 |Closed|2 & 3|2 & 3|2 & 3|Closed|1 & 2|Closed|
| | & 5 | | | | | | | |
|------------------------------------------------------------|
|Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION (WRITE THROUGH) |
|------------------------------------------------------------|
|Size | JP8 | JP9 |JP10 |JP11 |JP12 | JP13 |JP14 | JP15 |
|-----+---------+------+-----+-----+-----+------+-----+------|
|32KB | 2 & 3 | Open |2 & 3|2 & 3|2 & 3| Open |2 & 3| Open |
|-----+---------+------+-----+-----+-----+------+-----+------|
|64KB | 1 & 2 |Closed|2 & 3|2 & 3|2 & 3| Open |2 & 3| Open |
|-----+---------+------+-----+-----+-----+------+-----+------|
|128KB|1 & 2, 3 |Closed|2 & 3|2 & 3|2 & 3|Closed|2 & 3| Open |
| | & 4 | | | | | | | |
|-----+---------+------+-----+-----+-----+------+-----+------|
|256KB|1 & 2, 4 |Closed|2 & 3|2 & 3|2 & 3|Closed|2 & 3|Closed|
| | & 5 | | | | | | | |
|------------------------------------------------------------|
|Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | JP7 | JP21 |
|------------------+--------------------+--------------------|
| 33MHz | pins 1 & 2 closed | pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| 40MHz | pins 2 & 3 closed | pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MATH COPROCESSOR WAIT STATE CONFIGURATION |
|------------------------------------------------------------|
| Wait states | JP5 |
|-------------------------------+----------------------------|
| 0 wait states | Closed |
|-------------------------------+----------------------------|
| 1 wait state | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| A20 GATE CONFIGURATION |
|------------------------------------------------------------|
| Setting | JP4 |
|----------------------------------------+-------------------|
| Hardware emulate | Open |
|----------------------------------------+-------------------|
| 8042 keyboard controller | pins 1 & 2 closed |
|----------------------------------------+-------------------|
| Cyrix CPU emulate | pins 2 & 4 closed |
|----------------------------------------+-------------------|
| Keyboard controller controls Cyrix CPU | pins 3 & 4 closed |
+------------------------------------------------------------+