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# ROBOTECH, INC.
VL-BUS 486
Processor 80486SX/80486DX/80486DX2
Processor Speed 20/25/33/50(internal)/50/66(internal)MHz
Chip Set Toshiba
Max. Onboard DRAM 32MB
Cache 32/64/128/256KB
BIOS AMI
Dimensions 254mm x 220mm
I/O Options 32-bit VESA local bus slots (2)
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|---------------+----------+----------------------+----------|
| Turbo LED | JP3 | Turbo switch | JP10 |
|---------------+----------+----------------------+----------|
| Speaker | JP7 | External battery | JP25 |
|---------------+----------+----------------------+----------|
| Power LED & | JP8 | 32-bit VESA local | SL1 & |
| keylock | | bus slots | SL2 |
|---------------+----------+----------------------+----------|
| Reset switch | JP9 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|----------------------------------+--------+----------------|
| » | Turbo switch select turbo | JP10 | Closed |
|---+------------------------------+--------+----------------|
| | Turbo switch select normal | JP10 | Open |
|---+------------------------------+--------+----------------|
| » | CMOS memory normal operation | JP24 | pins 2 & 3 |
| | | | closed |
|---+------------------------------+--------+----------------|
| | CMOS memory clear | JP24 | pins 1 & 2 |
| | | | 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) 256K x 9 | (4) 1M x 9 |
|------------------+--------------------+--------------------|
| 8MB | (4) 1M x 9 | (4) 1M x 9 |
|------------------+--------------------+--------------------|
| 16MB | (4) 4M x 9 | NONE |
|------------------+--------------------+--------------------|
| 20MB | (4) 1M x 9 | (4) 4M 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 | 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 |
|------------------------------------------------------------|
| Size | JP14 | JP15 | JP16 | JP17 | JP20 | JP21 | JP22 |
|-------+-------+-------+-------+-------+------+------+------|
| 32KB | 1 & 2 | Open | Open | Open |2 & 3 |2 & 3 |1 & 2 |
|-------+-------+-------+-------+-------+------+------+------|
| 64KB | 2 & 3 | Open | Open |Closed |1 & 2 |2 & 3 |1 & 2 |
|-------+-------+-------+-------+-------+------+------+------|
| 128KB | 1 & 2 |Closed | Open |Closed |1 & 2 |1 & 2 |2 & 3 |
|-------+-------+-------+-------+-------+------+------+------|
| 256KB | 2 & 3 |Closed |Closed |Closed |1 & 2 |1 & 2 |1 & 2 |
|------------------------------------------------------------|
|Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | JP12 | JP13 | JP18 |
|-------------+------------------+--------+------------------|
| 80486SX | pins 2 & 3 | Open | pins 1 & 2 |
| | closed | | closed |
|-------------+------------------+--------+------------------|
| 80486DX/DX2 | pins 1 & 2 | Closed | pins 2 & 3 |
| | closed | | closed |
+------------------------------------------------------------+