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# ADVANCED INTEGRATION RESEARCH, INC.
486LC
Processor 80486DX
Processor Speed 25/33MHz
Chip Set UMC
Max. Onboard DRAM 16MB
Cache 128/256KB
BIOS AMI/Award/Phoenix
Dimensions 355mm x 304mm
I/O Options None
NPU Options 4167
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------+------------+---------------+------------|
| Power LED & | J1 | Turbo LED | J6 |
| keylock | | | |
|------------------+------------+---------------+------------|
| Speaker | J4 | External 6V | JB2 |
| | | battery | |
|------------------+------------+---------------+------------|
| Reset switch | J5 | | |
|------------------------------------------------------------|
| Note:No internal battery is provided, an external battery |
| must be used. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper/Switch | Position |
|-------------------------------+---------------+------------|
| » | CPU speed select high | J3 | pins 1 & 2 |
| | | | closed |
|---+---------------------------+---------------+------------|
| | CPU speed select low | J3 | pins 2 & 3 |
| | | | closed |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | SW1/1 | N/A |
| | not alter | | |
|---+---------------------------+---------------+------------|
| » | UNIX operating system not | SW1/2 | Off |
| | installed | | |
|---+---------------------------+---------------+------------|
| | UNIX operating system | SW1/2 | On |
| | installed | | |
|---+---------------------------+---------------+------------|
| » | External cache memory | SW1/3 | Off |
| | disabled | | |
|---+---------------------------+---------------+------------|
| | External cache memory | SW1/3 | On |
| | enabled | | |
|---+---------------------------+---------------+------------|
| » | Memory range | SW1/4 | Off |
| | 00C00000-00FFFFFF | | |
| | (12-16MB) cacheable | | |
|---+---------------------------+---------------+------------|
| | Memory range | SW1/4 | On |
| | 00C00000-00FFFFFF | | |
| | (12-16MB) non-cacheable | | |
|---+---------------------------+---------------+------------|
| » | Monitor type select color | SW1/5 | On |
|---+---------------------------+---------------+------------|
| | Monitor type select | SW1/5 | Off |
| | monochrome | | |
|---+---------------------------+---------------+------------|
| » | Onboard DRAM enabled | SW1/6 | On |
|---+---------------------------+---------------+------------|
| | Onboard DRAM disabled | SW1/6 | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|------+-------------+-------------+------------+------------|
| 1MB | (4) 256K x | NONE | NONE | NONE |
| | 9 | | | |
|------+-------------+-------------+------------+------------|
| 2MB | (4) 256K x | (4) 256K x | NONE | NONE |
| | 9 | 9 | | |
|------+-------------+-------------+------------+------------|
| 3MB | (4) 256K x | (4) 256K x | (4) 256K x | NONE |
| | 9 | 9 | 9 | |
|------+-------------+-------------+------------+------------|
| 4MB | (4) 256K x | (4) 256K x | (4) 256K x | (4) 256K x |
| | 9 | 9 | 9 | 9 |
|------+-------------+-------------+------------+------------|
| 4MB | (4) 1M x 9 | NONE | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 8MB | (4) 1M x 9 | (4) 1M x 9 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 12MB | (4) 1M x 9 | (4) 1M x 9 | (4) 1M x 9 | NONE |
|------+-------------+-------------+------------+------------|
| 16MB | (4) 1M x 9 | (4) 1M x 9 | (4) 1M x 9 | (4) 1M x 9 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP1 | JP2 | JP3 |
|------+-----------------+-----------------+-----------------|
| 1MB | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 |
| | closed | closed | closed |
|------+-----------------+-----------------+-----------------|
| 2MB | pins 2 & 3 | pins 1 & 2 | pins 1 & 2 |
| | closed | closed | closed |
|------+-----------------+-----------------+-----------------|
| 3MB | pins 1 & 2 | pins 2 & 3 | pins 1 & 2 |
| | closed | closed | closed |
|------+-----------------+-----------------+-----------------|
| 4MB | pins 2 & 3 | pins 2 & 3 | pins 1 & 2 |
| | closed | closed | closed |
|------+-----------------+-----------------+-----------------|
| 4MB | pins 1 & 2 | pins 1 & 2 | pins 2 & 3 |
| | closed | closed | closed |
|------+-----------------+-----------------+-----------------|
| 8MB | pins 2 & 3 | pins 1 & 2 | pins 2 & 3 |
| | closed | closed | closed |
|------+-----------------+-----------------+-----------------|
| 12MB | pins 1 & 2 | pins 2 & 3 | pins 2 & 3 |
| | closed | closed | closed |
|------+-----------------+-----------------+-----------------|
| 16MB | pins 2 & 3 | pins 2 & 3 | pins 2 & 3 |
| | closed | closed | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|---------------+----------------------+---------------------|
| 128KB | (4) 32K x 8 | NONE |
|---------------+----------------------+---------------------|
| 256KB | (4) 32K x 8 | (4) 32K x 8 |
|------------------------------------------------------------|
| Note:Model 486LC may be equipped with 4 DIP sockets for a |
| maximum of 128KB cache. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MEMORY CHIP SPEED JUMPER CONFIGURATION |
|------------------------------------------------------------|
| 25MHz | 33MHz | JP4 |
|-------------------+-------------------+--------------------|
| 80ns | 60ns | pins 1 & 2 closed |
|-------------------+-------------------+--------------------|
| 100ns | 80ns | pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIOS CONFIGURATION |
|------------------------------------------------------------|
| Size | JB1 | SW1/7 |
|-------------------+--------------------+-------------------|
| 27256 | pins 1 & 2 closed | Off |
|-------------------+--------------------+-------------------|
| 27512 | pins 2 & 3 closed | On |
+------------------------------------------------------------+