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# UNIDENTIFIED
80486L-ISA
Processor 80486SX/80487SX/80486DX/ODP486SX/80486DX2
Processor Speed 20/25/33/50(internal)/50/66(internal)MHz
Chip Set SIS
Max. Onboard DRAM 32MB
Cache 64/128/256KB
BIOS AMI/Award
Dimensions 254mm x 218mm
I/O Options 32-bit local bus card slot
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|----------------------+----------+---------------+----------|
| 32-bit local bus | CN1 | Reset switch | JP13 |
| card | | | |
|----------------------+----------+---------------+----------|
| External battery | JP1 | Power LED & | JP14 |
| | | keylock | |
|----------------------+----------+---------------+----------|
| Speaker | JP11 | Turbo LED | JP15 |
|----------------------+----------+---------------+----------|
| Turbo switch | JP12 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+---------+-----------|
| ยป | Monitor type select color | JP3 | Open |
|---+----------------------------------+---------+-----------|
| | Monitor type select monochrome | JP3 | 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 |
|------------------+--------------------+--------------------|
| 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 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | TAG |
|------------+---------------+---------------+---------------|
| 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 | JP6 | JP7 |
|-------------------+--------------------+-------------------|
| 64KB | Open | Open |
|-------------------+--------------------+-------------------|
| 128KB | pins 1 & 2 closed | Closed |
|-------------------+--------------------+-------------------|
| 256KB | pins 2 & 3 closed | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | Speed | Oscillator | JP4 | JP8 | JP9 |
|-----------+--------+------------+--------+--------+--------|
| 80486SX | 16MHz | 32MHz | 1 & 2 | Open | 2 & 3 |
|-----------+--------+------------+--------+--------+--------|
| 80486SX | 20MHz | 40MHz | 1 & 2 | Open | 2 & 3 |
|-----------+--------+------------+--------+--------+--------|
| ODP486SX | 50MHz | 25MHz | 2 & 3 | 1 & 2 | 1 & 2, |
| | | | | | 3 & 4 |
|-----------+--------+------------+--------+--------+--------|
| 80487SX | 25MHz | 25MHz | 2 & 3 | 1 & 2 | 1 & 2, |
| | | | | | 3 & 4 |
|-----------+--------+------------+--------+--------+--------|
| 80486DX | 25MHz | 25MHz | 2 & 3 | 2 & 3 | 1 & 2, |
| | | | | | 3 & 4 |
|-----------+--------+------------+--------+--------+--------|
| 80486DX | 33MHz | 33MHz | 2 & 3 | 2 & 3 | 1 & 2, |
| | | | | | 3 & 4 |
|-----------+--------+------------+--------+--------+--------|
| 80486DX | 50MHz | 50MHz | 2 & 3 | 2 & 3 | 1 & 2, |
| | | | | | 3 & 4 |
|-----------+--------+------------+--------+--------+--------|
| 80486DX2 | 50MHz | 25MHz | 2 & 3 | 2 & 3 | 1 & 2, |
| | | | | | 3 & 4 |
|-----------+--------+------------+--------+--------+--------|
| 80486DX2 | 66MHz | 33MHz | 2 & 3 | 2 & 3 | 1 & 2, |
| | | | | | 3 & 4 |
|------------------------------------------------------------|
| Note:The location of JP4 is unidentified. Pins designated |
| should be in the closed position. |
+------------------------------------------------------------+