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# SEANIX TECHNOLOGY, INC.
486LC1
Processor 80386DX/80486SX/80487SX/80486DX/80486DX2
Processor Speed 20/25/33/40/50(internal)/50/66(internal)MHz
Chip Set Contaq
Max. Onboard DRAM 32MB
Cache 64/128/256KB
BIOS AMI
Dimensions 330mm x 218mm
I/O Options None
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|----------------+----------+---------------------+----------|
| Turbo LED | P1 | Power LED & keylock | P4 |
|----------------+----------+---------------------+----------|
| Turbo switch | P2 | Reset switch | P5 |
|----------------+----------+---------------------+----------|
| Speaker | P3 | External battery | P7 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|------------------------------------+--------+--------------|
| » | Monitor type select color | JP22 | Closed |
|---+--------------------------------+--------+--------------|
| | Monitor type select monochrome | JP22 | Open |
|---+--------------------------------+--------+--------------|
| » | CMOS memory normal operation | JP23 | pins 1 & 2 |
| | | | closed |
|---+--------------------------------+--------+--------------|
| | CMOS memory clear | JP23 | pins 2 & 3 |
| | | | 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) 1M x 9 | (4) 256K x 9 |
|------------------+--------------------+--------------------|
| 8MB | (4) 1M x 9 | (4) 1M x 9 |
|------------------+--------------------+--------------------|
| 16MB | (4) 4M x 9 | NONE |
|------------------+--------------------+--------------------|
| 17MB | (4) 4M x 9 | (4) 256K 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 | DIRTY (U1) |
|-------+-------------+------------+------------+------------|
| 64KB | (4) 8K x 8 | (4) 8K x 8 | (1) 8K x 8 | (1) 8K x 8 |
|-------+-------------+------------+------------+------------|
| 128KB | (4) 32K x 8 | NONE | (1) 8K x 8 | (1) 8K x 8 |
|-------+-------------+------------+------------+------------|
| 256KB | (4) 32K x 8 | (4) 32K x | (1) 32K x | (1) 32K x |
| | | 8 | 8 | 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP13 | JP14 | JP15 | JP16 | JP19 | JP20 |
|--------+--------+--------+--------+--------+-------+-------|
| 64KB | Open | Open | Open | Open | 2 & 3 | Open |
|--------+--------+--------+--------+--------+-------+-------|
| 128KB | Closed | Open | Closed | Open | 1 & 2 | 2 & 3 |
|--------+--------+--------+--------+--------+-------+-------|
| 256KB | Closed | Closed | Closed | Closed | 2 & 3 | 1 & 2 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | JP1 | JP2 | JP3 | JP4 | JP5 | JP6 | JP7 |
|--------+-------+-------+-------+-------+-------+-----+-----|
|80386DX | Open | Open | Open | Open | Open |Open |Open |
|--------+-------+-------+-------+-------+-------+-----+-----|
|CX486DLC|Closed |Closed |Closed | Open | Open |Open |Open |
|--------+-------+-------+-------+-------+-------+-----+-----|
|80486SX | Open | Open | Open | Open | Open |2 & 3|1 & 2|
|--------+-------+-------+-------+-------+-------+-----+-----|
|80487SX | Open | Open | Open |Closed |Closed |2 & 3|1 & 2|
|--------+-------+-------+-------+-------+-------+-----+-----|
|80486DX | Open | Open | Open | Open |Closed |2 & 3|2 & 3|
|--------+-------+-------+-------+-------+-------+-----+-----|
|80486DX2| Open | Open | Open | Open |Closed |2 & 3|2 & 3|
|------------------------------------------------------------|
|Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Type | JP8 | JP9 | JP10 | JP17 | JP18 | JP21 | JP24 |
|---------+-------+------+-------+------+------+------+------|
| 80386DX |Closed | Open | Open |2 & 3 |2 & 3 |2 & 3 |1 & 2 |
|---------+-------+------+-------+------+------+------+------|
|CX486DLC |Closed | Open | Open |2 & 3 |2 & 3 |2 & 3 | N/A |
|---------+-------+------+-------+------+------+------+------|
| 80486SX | Open |1 & 2 |Closed |1 & 2 |1 & 2 |1 & 2 |2 & 3 |
|---------+-------+------+-------+------+------+------+------|
| 80487SX | Open |1 & 2 |Closed |1 & 2 |1 & 2 |1 & 2 |2 & 3 |
|---------+-------+------+-------+------+------+------+------|
| 80486DX | Open |1 & 2 |Closed |1 & 2 |1 & 2 |1 & 2 |2 & 3 |
|---------+-------+------+-------+------+------+------+------|
|80486DX2 | Open |1 & 2 |Closed |1 & 2 |1 & 2 |1 & 2 |2 & 3 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position.|
| JP24 may not be present on all boards. The location is |
| unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 80386 ATCLK CONFIGURATION |
|------------------------------------------------------------|
| ATCLK | JP11 | JP12 |
|-------------------+--------------------+-------------------|
| 4 | Closed | Closed |
|-------------------+--------------------+-------------------|
| 6 | Closed | Open |
|-------------------+--------------------+-------------------|
| 8 | Open | Closed |
|-------------------+--------------------+-------------------|
| 10 | Open | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 80486 ATCLK CONFIGURATION |
|------------------------------------------------------------|
| ATCLK | JP11 | JP12 |
|-------------------+--------------------+-------------------|
| 3 | Closed | Open |
|-------------------+--------------------+-------------------|
| 4 | Open | Closed |
|-------------------+--------------------+-------------------|
| 5 | Open | Open |
|-------------------+--------------------+-------------------|
| 6 | Closed | Closed |
+------------------------------------------------------------+