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# ASUS COMPUTER INTERNATIONAL
1433AEA-P/1450AEA-P
Processor 80486SX/80487SX/80486DX/ODP486SX/80486DX2
Processor Speed 20/25/33/50(internal)50/66(internal)MHz
Chip Set Biostar
Max. Onboard DRAM 32MB
Cache 64/128/256KB
BIOS AMI
Dimensions 330mm x 218mm
I/O Options None
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+---------------+---------+--------------|
| External battery | JP8 | Reset | JP15/pins 12 |
| | | switch | - 13 |
|-------------------+---------------+---------+--------------|
| Speaker | JP15/pins 1 - | Turbo | JP15/pins 15 |
| | 4 | switch | - 16 |
|-------------------+---------------+---------+--------------|
| Keylock & power | JP15/pins 5 - | 5 volt | JP15/pins 17 |
| LED | 9 | ground | - 18 |
|-------------------+---------------+---------+--------------|
| Turbo LED | JP15/pins 10 | | |
| | - 11 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|-------------------------------------+--------+-------------|
| » | Factory configured-do not alter | JP4 | pins 2 & 3 |
| | | | closed |
|---+---------------------------------+--------+-------------|
| | Tag RAM select 7-bit | JP6 | pins 1 & 2 |
| | | | closed |
|---+---------------------------------+--------+-------------|
| | Tag RAM select 8-bit | JP6 | pins 2 & 3 |
| | | | closed |
|---+---------------------------------+--------+-------------|
| » | Battery & RTC chip select | JP11 | Open |
|---+---------------------------------+--------+-------------|
| | Dallas 1287 chip select | JP11 | Closed |
|---+---------------------------------+--------+-------------|
| » | Monitor type select color | JP14 | pins 1 & 2 |
| | | | closed |
|---+---------------------------------+--------+-------------|
| | Monitor type select monochrome | JP14 | pins 2 & 3 |
| | | | closed |
|---+---------------------------------+--------+-------------|
| » | CMOS normal operation | JP16 | pins 2 & 3 |
| | | | closed |
|---+---------------------------------+--------+-------------|
| | CMOS clear | JP16 | pins 1 & 2 |
| | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CLOCK SPEED SELECT |
|------------------------------------------------------------|
| Speed | JP5 | JP10 |
|-------------------+--------------------+-------------------|
| 50MHz | pins 1 & 2 closed | Closed |
|-------------------+--------------------+-------------------|
| Other | pins 2 & 3 closed | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE SELECT |
|------------------------------------------------------------|
| Type | JP13 | JP20 |
|--------------------+-------------------+-------------------|
| 80486SX | Open | pins 1 & 2 closed |
|--------------------+-------------------+-------------------|
| 80487SX/80486 | pins 1 & 2 closed | pins 2 & 3 closed |
| Overdrive | | |
|--------------------+-------------------+-------------------|
| 80486DX/DX2 | pins 2 & 3 closed | pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Cache 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 |
|------------------------------------------------------------|
| Cache Size | JP12 | JP19 |
|------------+---------------------------+-------------------|
| 64KB | Open | pins 1 & 2 closed |
|------------+---------------------------+-------------------|
| 128KB | pins 1 & 2, 3 & 4 closed | pins 2 & 3 closed |
|------------+---------------------------+-------------------|
| 256KB | pins 1 & 2, 3 & 4, 5 & 6 | pins 1 & 2 closed |
| | 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) 256K x 9 | (4) 1M x 9 |
|------------------+--------------------+--------------------|
| 8MB | (4) 1M x 9 | (4) 1M x 9 |
|------------------+--------------------+--------------------|
| 16MB | (4) 4M x 9 | NONE |
|------------------+--------------------+--------------------|
| 20MB | (4) 4M x 9 | (4) 1M x 9 |
|------------------+--------------------+--------------------|
| 32MB | (4) 4M x 9 | (4) 4M x 9 |
+------------------------------------------------------------+