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# AST RESEARCH, INC.
ADVANTAGE+ (CHINA) 486 (202676-F08)
Processor 80486SX/80486DX/CX486DX2/80486DX2/CX5X86
Processor 25/33/50(internal)/66(internal)MHz
Speed
Chip Set Unidentified
Max. Onboard 20MB
DRAM
Cache None
BIOS Unidentified
Dimensions 220mm x 220mm
I/O Options Floppy drive interface, IDE interface, parallel
port, PS/2 mouse port, serial port, VGA feature
connector, VGA port, riser slot
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-----------------+----------+--------------------+----------|
| VGA port | CN1 | IDE interface LED | E13 |
|-----------------+----------+--------------------+----------|
| Parallel port | CN2 | VGA feature | J19 |
| | | connector | |
|-----------------+----------+--------------------+----------|
| Serial port | CN3 | IDE interface | J22 |
|-----------------+----------+--------------------+----------|
| PS/2 mouse port | CN4 | Floppy drive | J24 |
| | | interface | |
|-----------------+----------+--------------------+----------|
| Reset switch | E11 | Chassis fan power | J28 |
|-----------------+----------+--------------------+----------|
| Power LED | E12 | Riser slot | SL1 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|---------------------------------------+---------+----------|
| » | Factory configured - do not alter | E1 | Open |
|---+-----------------------------------+---------+----------|
| » | Factory configured - do not alter | E2 | Open |
|---+-----------------------------------+---------+----------|
| » | On board video enabled | E3 | Closed |
|---+-----------------------------------+---------+----------|
| | On board video disabled | E3 | Open |
|---+-----------------------------------+---------+----------|
| » | Monitor type select color | E4 | Open |
|---+-----------------------------------+---------+----------|
| | Monitor type select monochrome | E4 | Closed |
|---+-----------------------------------+---------+----------|
| » | Password enabled | E5 | Open |
|---+-----------------------------------+---------+----------|
| | Password disabled | E5 | Closed |
|---+-----------------------------------+---------+----------|
| » | Factory configured - do not alter | E8 | Open |
|---+-----------------------------------+---------+----------|
| » | Flash BIOS normal operation | E14 | Open |
|---+-----------------------------------+---------+----------|
| | Flash BIOS force update at boot | E14 | Closed |
|---+-----------------------------------+---------+----------|
| » | Factory configured - do not alter | E16 | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|----------------+------------------+------------------------|
| 4MB | 4MB | NONE |
|----------------+------------------+------------------------|
| 5MB | 4MB | (1) 256K x 32 |
|----------------+------------------+------------------------|
| 8MB | 4MB | (1) 4M x 32 |
|----------------+------------------+------------------------|
| 20MB | 4MB | (1) 4M x 32 |
|------------------------------------------------------------|
| Note: Bank 0 is factory installed and is not configurable. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | E6 | E7 | E9 | E10 |
|----------+--------------+--------+------------+------------|
| 80486SX | pins 1 & 2 | Open | pins 2 & 3 | pins 1 & 2 |
| | closed | | closed | closed |
|----------+--------------+--------+------------+------------|
| 80486DX | pins 1 & 2 | Closed | pins 2 & 3 | pins 2 & 3 |
| | closed | | closed | closed |
|----------+--------------+--------+------------+------------|
| 80486DX2 | pins 1 & 2 | Closed | pins 2 & 3 | pins 2 & 3 |
| | closed | | closed | closed |
|------------------------------------------------------------|
| Note: Upgrades are not supported. These settings are for |
| reference only. |
+------------------------------------------------------------+