TEXT View Source
# AUSTIN COMPUTER SYSTEMS
486 EISA SI-6
Processor 80486SX/80487SX/80486DX/80486DX2
Processor Speed 33/50/66(internal)MHz
Chip Set SIS
Max. Onboard DRAM 32MB (128MB with BIOS upgrade)
Cache 64/128/256KB
BIOS AMI
Dimensions 330mm x 218mm
I/O Options None
NPU Options 4167
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|---------------------+----------+----------------+----------|
| Power LED & keylock | J1 | Turbo switch | J4 |
|---------------------+----------+----------------+----------|
| Speaker | J2 | Turbo LED | J5 |
|---------------------+----------+----------------+----------|
| Reset switch | J3 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | Factory configured - do not | JP9 | pins 1 & 2 |
| | alter | | closed |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP21 | pins 1 & 2 |
| | alter | | closed |
|---+----------------------------------+--------+------------|
| » | Burst mode select enabled | JP23 | Closed |
|---+----------------------------------+--------+------------|
| | Burst mode select disabled | JP23 | Open |
|---+----------------------------------+--------+------------|
| » | Monitor type select color | JP24 | Open |
|---+----------------------------------+--------+------------|
| | Monitor type select monochrome | JP24 | 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 |
|--------------+------------------------+--------------------|
| 64MB | (4) 16M x 9 | None |
|--------------+------------------------+--------------------|
| 128MB | (4) 16M x 9 | (4) 16M x 9 |
|------------------------------------------------------------|
| Note : The main board will only accept 16M x 9 SIMMs if |
| the BIOS upgrade is installed. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 |
|------------------------------------------------------------|
| Note : Tag chips are factory installed and are not |
| configurable. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP1 | JP2 | JP3 | JP4 | JP12 | JP13 |
|--------+--------+--------+--------+--------+-------+-------|
| 64KB | 2 & 3 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 |
|--------+--------+--------+--------+--------+-------+-------|
| 128KB | 1 & 2 | 2 & 3 | 1 & 2 | 2 & 3 | 1 & 2 | 2 & 3 |
|--------+--------+--------+--------+--------+-------+-------|
| 256KB | 4 & 5 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | JP5 | JP7 | JP15 |
|----------+-------------------+-------------------+---------|
| 80486SX | pins 2 & 3 closed | pins 2 & 3 closed | Open |
|----------+-------------------+-------------------+---------|
| 80487SX | pins 2 & 3 closed | pins 1 & 2 closed | Closed |
|----------+-------------------+-------------------+---------|
| 80486DX | pins 1 & 2 closed | pins 1 & 2 closed | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BATTERY TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | JP10 | JP11 |
|------------------+--------------------+--------------------|
| DS1287 | pins 1 & 2 closed | pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| DS1488 | pins 2 & 3 closed | pins 2 & 3 closed |
+------------------------------------------------------------+