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# ROBOTECH, INC.
COBRA RS
Processor 80486SX/80487SX/80486DX/80486DX2/Pentium
Overdrive
Processor 25/33/40/50(internal)/50/66(internal)MHz
Speed
Chip Set OPTI
Max. Onboard 128MB
DRAM
Cache 256/512/1024KB
BIOS AMI
Dimensions 330mm x 218mm
I/O Options 32-bit VESA local bus slots (3), green PC
connector
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| External battery | JP2 | Turbo switch | JP19 |
|-------------------+----------+------------------+----------|
| Green power | JP3 | Green PC | JP20 |
| supply | | hardware switch | |
|-------------------+----------+------------------+----------|
| Keyboard | JP16 | Turbo LED | JP21 |
| connector | | | |
|-------------------+----------+------------------+----------|
| Speaker | JP17 | Reset switch | JP26 |
|-------------------+----------+------------------+----------|
| Green PC LED | JP18 | 32-bit VESA | SL1 - |
| | | local bus slots | SL3 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | CMOS memory normal operation | JP1 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | CMOS memory clear | JP1 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Monitor type select color | JP4 | Closed |
|---+----------------------------------+--------+------------|
| | Monitor type select monochrome | JP4 | Open |
|---+----------------------------------+--------+------------|
| » | Flash BIOS voltage select 5v | JP5 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Flash BIOS voltage select 12v | JP5 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | CPU type select Intel | JP15 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | CPU type select Cyrix | JP15 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP24 | Open |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP25 | Open |
| | alter | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 |
|------------------+--------------------+--------------------|
| 8MB | (4) 1M x 9 | (4) 1M x 9 |
|------------------+--------------------+--------------------|
| 16MB | (4) 4M x 9 | NONE |
|------------------+--------------------+--------------------|
| 20MB | (4) 1M x 9 | (4) 4M x 9 |
|------------------+--------------------+--------------------|
| 32MB | (4) 4M x 9 | (4) 4M x 9 |
|------------------+--------------------+--------------------|
| 64MB | (4) 8M x 9 | (4) 8M x 9 |
|------------------+--------------------+--------------------|
| 128MB | (4) 16M x 9 | (4) 16M x 9 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | TAG |
|------------+---------------+---------------+---------------|
| 256KB | (4) 32K x 8 | (4) 32K x 8 | (1) 32K x 8 |
|------------+---------------+---------------+---------------|
| 512KB | (4) 128K x 8 | NONE | (1) 32K x 8 |
|------------+---------------+---------------+---------------|
| 1MB | (4) 128K x 8 | (4) 128K x 8 | (1) 32K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP11 | JP12 |
|------------------+--------------------+--------------------|
| 256KB | pins 1 & 2 closed | pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| 512KB | pins 2 & 3 closed | pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| 1MB | pins 2 & 4 closed | pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | JP8 | JP9 | JP10 |
|--------------+-----------------------+------------+--------|
| 80486SX | pins 2 & 3 closed | Open | Open |
|--------------+-----------------------+------------+--------|
| 80487SX | pins 1 & 2, 3 & 4 | Open | Open |
| | closed | | |
|--------------+-----------------------+------------+--------|
| 80486DX/DX2 | pins 1 & 2, 3 & 4 | pins 2 & 3 | Open |
| | closed | closed | |
|--------------+-----------------------+------------+--------|
| Pentium | pins 1 & 2, 3 & 4 | pins 1 & 2 | Closed |
| Overdrive | closed | closed | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | JP13 | JP14 | JP27 | JP28 |
|--------+--------+----------------+------------+------------|
| 25MHz | Closed | pins 1 & 2 | pins 2 & 4 | pins 2 & 3 |
| | | closed | closed | closed |
|--------+--------+----------------+------------+------------|
| 33MHz | Open | pins 1 & 2, 5 | pins 2 & 4 | pins 2 & 3 |
| | | & 6 closed | closed | closed |
|--------+--------+----------------+------------+------------|
| 40MHz | Open | pins 1 & 2, 3 | pins 1 & 2 | pins 1 & 2 |
| | | & 4 closed | closed | closed |
|--------+--------+----------------+------------+------------|
| 50iMHz | Closed | pins 1 & 2 | pins 2 & 4 | pins 2 & 3 |
| | | closed | closed | closed |
|--------+--------+----------------+------------+------------|
| 50MHz | Open | pins 1 & 2, 3 | pins 1 & 2 | pins 1 & 2 |
| | | & 4, 5 & 6 | closed | closed |
| | | closed | | |
|--------+--------+----------------+------------+------------|
| 66iMHz | Open | pins 1 & 2, 5 | pins 2 & 4 | pins 2 & 3 |
| | | & 6 closed | closed | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BUS SPEED CONFIGURATION |
|------------------------------------------------------------|
| CPU speed | JP22 |
|-------------------------------+----------------------------|
| <=33MHz | Open |
|-------------------------------+----------------------------|
| >33MHz | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VESA WAIT STATE CONFIGURATION |
|------------------------------------------------------------|
| Wait states | JP23 |
|-------------------------------+----------------------------|
| 0 wait states | Open |
|-------------------------------+----------------------------|
| 1 wait state | Closed |
+------------------------------------------------------------+