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# AUSTIN COMPUTER SYSTEMS
486 S14
Processor 80486DX/80486DX2
Processor Speed 25/33/50(internal)/50/66(internal)MHz
Chip Set SIS
Max. Onboard DRAM 32MB
Cache 64/128/256KB
BIOS AMI
Dimensions 220mm x 220mm
I/O Options 32-bit proprietary OPTI local bus card slot
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|--------------+----------+-----------------------+----------|
| Turbo LED | J3 | Reset switch | J6 |
|--------------+----------+-----------------------+----------|
| Turbo switch | J4 | Power LED & keylock | J7 |
|--------------+----------+-----------------------+----------|
| Speaker | J5 | 32-bit OPTI local bus | S1 |
| | | card | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | Local bus data size select | J8 | pins 1 & 2 |
| | 32-bits | | closed |
|---+----------------------------------+--------+------------|
| | Local bus data size select | J8 | pins 2 & 3 |
| | 16-bits | | closed |
|---+----------------------------------+--------+------------|
| » | CMOS memory normal operation | JP1 | Closed |
|---+----------------------------------+--------+------------|
| | CMOS memory clear | JP1 | Open |
|---+----------------------------------+--------+------------|
| » | Monitor type select color | JP2 | Closed |
|---+----------------------------------+--------+------------|
| | Monitor type select monochrome | JP2 | Open |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP6 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP7 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP8 | N/A |
| | 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 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 | SR1 | SR2 | SR3 | SR4 | SR5 | SR6 | SR7 | SR8 | SR9 |
|------+-----+-----+-----+-----+-----+-----+-----+-----+-----|
| 64KB |1 & 2|1 & 2|2 & 3|2 & 3|2 & 3|2 & 3|1 & 2|1 & 2|1 & 2|
|------+-----+-----+-----+-----+-----+-----+-----+-----+-----|
|128KB |2 & 3|2 & 3|2 & 3|1 & 2|1 & 2|2 & 3|2 & 3|1 & 2|1 & 2|
|------+-----+-----+-----+-----+-----+-----+-----+-----+-----|
|256KB |2 & 3|2 & 3|2 & 3|2 & 3|2 & 3|2 & 3|2 & 3|2 & 3|2 & 3|
|------------------------------------------------------------|
|Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+