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# ADVANCED INTEGRATION RESEARCH, INC.
486US
Processor 80486SX/80487SX/80486DX
Processor Speed 20/25/33/50MHz
Chip Set UMC
Max. Onboard DRAM 32MB
Cache 64/128/256KB
BIOS AMI/Phoenix
Dimensions 330mm x 218mm
I/O Options 32-bit external memory card slot
NPU Options 4167
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| External battery | J1 | Turbo switch | J6 |
|-------------------+----------+------------------+----------|
| Power LED & | J3 | Turbo LED | J7 |
| keylock | | | |
|-------------------+----------+------------------+----------|
| Speaker | J4 | 32-bit external | JME1 |
| | | memory card | |
|-------------------+----------+------------------+----------|
| Reset switch | J5 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|------------------------------------+--------+--------------|
| » | Monitor type select color | JP10 | Closed |
|---+--------------------------------+--------+--------------|
| | Monitor type select monochrome | JP10 | Open |
|---+--------------------------------+--------+--------------|
| » | CMOS memory normal operation | JP19 | pins 1 & 2 |
| | | | closed |
|---+--------------------------------+--------+--------------|
| | CMOS memory clear | JP19 | 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 |
|------------------+--------------------+--------------------|
| 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 |
|------------------+--------------------+--------------------|
| 64KB | (4) 8K x 8 | (4) 8K x 8 |
|------------------+--------------------+--------------------|
| 128KB | (4) 32K x 8 | NONE |
|------------------+--------------------+--------------------|
| 256KB | (4) 32K x 8 | (4) 32K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP13 | JP14 | JP16 | JP17 | JP18 |
|----------+----------+----------+---------+--------+--------|
| 64KB | 1 & 2 | 1 & 2 | 2 & 3 | 1 & 2 | 1 & 2 |
|----------+----------+----------+---------+--------+--------|
| 128KB | 2 & 3 | 1 & 2 | 2 & 3 | 2 & 3 | 1 & 2 |
|----------+----------+----------+---------+--------+--------|
| 256KB | 1 & 2 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 |
|------------------------------------------------------------|
| Note:Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | JP1 | JP2 | JP3 | JP8 |
|---------+--------+-----------------+----------------+------|
| 80486SX | Open | pins 2 & 3 | pins 3 & 4 | Open |
| | | closed | closed | |
|---------+--------+-----------------+----------------+------|
| 80487SX | Closed | pins 1 & 2 | pins 2 & 3 | Open |
| | | closed | closed | |
|---------+--------+-----------------+----------------+------|
| 80486DX | Closed | pins 1 & 2 | pins 1 & 2 | Open |
| | | closed | closed | |
+------------------------------------------------------------+