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# AUSTIN COMPUTER SYSTEMS
486/DX2 50E WINSTATION
Processor 80486DX/80486DX2
Processor Speed 25/33/50(internal)/50/66(internal)MHz
Chip Set None
Max. Onboard DRAM 64MB
Cache 64/128/256KB (on external CPU card)
BIOS AMI
Dimensions 330mm x 218mm
I/O Options 32-bit external CPU card slot
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|--------------+----------+-----------------------+----------|
| Speaker | J2 | Reset switch | J7 |
|--------------+----------+-----------------------+----------|
| Turbo LED | J5 | Power LED & keylock | J8 |
|--------------+----------+-----------------------+----------|
| Turbo switch | J6 | 32-bit external CPU | S1 |
| | | card | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | Factory configured - do not | CE1 | N/A |
| | alter (on external CPU card) | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | CE2 | N/A |
| | alter (on external CPU card) | | |
|---+----------------------------------+--------+------------|
| » | I/O recovery time disabled | E1 | pins 1 & 2 |
| | (normal) | | closed |
|---+----------------------------------+--------+------------|
| | I/O recovery time enabled | E1 | pins 2 & 3 |
| | (slower) | | closed |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | E2 | pins 2 & 3 |
| | alter | | closed |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | E3 | pins 1 & 2 |
| | alter | | closed |
|---+----------------------------------+--------+------------|
| » | System base memory size select | J1 | pins 1 & 2 |
| | 640KB | | closed |
|---+----------------------------------+--------+------------|
| | System base memory size select | J1 | pins 2 & 3 |
| | 512KB | | closed |
|---+----------------------------------+--------+------------|
| » | Monitor type select color | JP2 | Closed |
|---+----------------------------------+--------+------------|
| | Monitor type select monochrome | JP2 | Open |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP3 | pins 1 & 2 |
| | alter | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|------+------------+------------+-------------+-------------|
| 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 | (1) 1M x 36 | NONE |
|------+------------+------------+-------------+-------------|
| 16MB | (4) 1M x 9 | (4) 1M x 9 | (1) 1M x 36 | (1) 1M x 36 |
|------+------------+------------+-------------+-------------|
| 16MB | (4) 4M x 9 | NONE | NONE | NONE |
|------+------------+------------+-------------+-------------|
| 20MB | (4) 4M x 9 | (4) 1M x 9 | NONE | NONE |
|------+------------+------------+-------------+-------------|
| 24MB | (4) 4M x 9 | (4) 1M x 9 | (1) 1M x 36 | NONE |
|------+------------+------------+-------------+-------------|
| 32MB | (4) 4M x 9 | (4) 4M x 9 | NONE | NONE |
|------+------------+------------+-------------+-------------|
| 40MB | (4) 4M x 9 | (4) 4M x 9 | (1) 1M x 36 | (1) 1M x 36 |
|------+------------+------------+-------------+-------------|
| 48MB | (4) 4M x 9 | (4) 4M x 9 | (4) 4M x 9 | NONE |
|------+------------+------------+-------------+-------------|
| 64MB | (4) 4M x 9 | (4) 4M x 9 | (4) 4M x 36 | (4) 4M x 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | J3 | J4 |
|------------------+--------------------+--------------------|
| 4MB | pins 2 & 3 closed | pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| 8MB | pins 2 & 3 closed | pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| 12MB | pins 2 & 3 closed | pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| 16MB | pins 2 & 3 closed | pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| 16MB | pins 1 & 2 closed | pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| 20MB | pins 1 & 2 closed | pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| 24MB | pins 2 & 3 closed | pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| 32MB | pins 1 & 2 closed | pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| 40MB | pins 2 & 3 closed | pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| 48MB | pins 1 & 2 closed | pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| 64MB | pins 1 & 2 closed | pins 1 & 2 closed |
+------------------------------------------------------------+
IMG IMG 2
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|----------------+---------------------+---------------------|
| 64KB | (5) 8K x 8 | (5) 8K x 8 |
|----------------+---------------------+---------------------|
| 128KB | (5) 32K x 8 | NONE |
|----------------+---------------------+---------------------|
| 256KB | (5) 32K x 8 | (5) 32K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | SR1 | SR2 | SR3 | SR4 | SR5 |
|----------+----------+----------+---------+--------+--------|
| 64KB | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 |
|----------+----------+----------+---------+--------+--------|
| 128KB | 2 & 3 | 1 & 2 | 1 & 2 | 2 & 3 | 1 & 2 |
|----------+----------+----------+---------+--------+--------|
| 256KB | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | SR6 | SR7 | SR8 | SR9 | SR10 |
|----------+----------+----------+---------+--------+--------|
| 64KB | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 |
|----------+----------+----------+---------+--------+--------|
| 128KB | 1 & 2 | 1 & 2 | 2 & 3 | 1 & 2 | 2 & 3 |
|----------+----------+----------+---------+--------+--------|
| 256KB | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+