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# AST RESEARCH, INC.
ADVANTAGE! (94) 486 (202601-XXX)
Processor 80486SX/80487SX/80486DX/ODP486SX/80486DX2/Pentium
Overdrive
Processor 25/33/50(internal)/66(internal)MHz
Speed
Chip Set AST
Max. Onboard 32MB
DRAM
Cache None
BIOS AMI
Dimensions 330mm x 218mm
I/O Options PS/2 mouse port, floppy drive interface, IDE
interface, parallel port, serial ports (2), VGA
port
NPU Options None
IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------+----------+-------------------+----------|
| PS/2 mouse port | CN1 | Power LED & | E12 |
| | | keylock (not | |
| | | used) | |
|------------------+----------+-------------------+----------|
| Serial port 2 | CN2 | IDE interface LED | E13 |
| | | (not used) | |
|------------------+----------+-------------------+----------|
| Serial port 1 | CN3 | IDE interface | J22 |
|------------------+----------+-------------------+----------|
| Parallel port | CN4 | Floppy drive | J24 |
| | | interface | |
|------------------+----------+-------------------+----------|
| VGA port | CN5 | Chassis fan power | J28 |
|------------------+----------+-------------------+----------|
| Reset switch | E11 | Riser card | SL1 |
| (not used) | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|------------------------------------+--------+--------------|
| » | Parallel port IRQ select IRQ7 | E1 | pins 1 & 2 |
| | | | closed |
|---+--------------------------------+--------+--------------|
| | Parallel port IRQ select IRQ5 | E1 | pins 2 & 3 |
| | | | closed |
|---+--------------------------------+--------+--------------|
| » | On board video enabled | E3 | Closed |
|---+--------------------------------+--------+--------------|
| | On board video disabled | E3 | Open |
|---+--------------------------------+--------+--------------|
| » | Monitor type select color | E4 | Open |
|---+--------------------------------+--------+--------------|
| | Monitor type select monochrome | E4 | Closed |
|---+--------------------------------+--------+--------------|
| » | CMOS memory normal operation | E5 | Open |
|---+--------------------------------+--------+--------------|
| | CMOS memory clear | E5 | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 4MB | (1) 512K x 36 | (1) 512K x 36 |
|------------------+--------------------+--------------------|
| 4MB | (1) 1M x 36 | NONE |
|------------------+--------------------+--------------------|
| 5MB | (1) 1M x 36 | (1) 256K x 36 |
|------------------+--------------------+--------------------|
| 6MB | (1) 1M x 36 | (1) 512K x 36 |
|------------------+--------------------+--------------------|
| 8MB | (1) 1M x 36 | (1) 1M x 36 |
|------------------+--------------------+--------------------|
| 9MB | (1) 2M x 36 | (1) 256K x 36 |
|------------------+--------------------+--------------------|
| 10MB | (1) 2M x 36 | (1) 512K x 36 |
|------------------+--------------------+--------------------|
| 12MB | (1) 2M x 36 | (1) 1M x 36 |
|------------------+--------------------+--------------------|
| 16MB | (1) 2M x 36 | (1) 2M x 36 |
|------------------+--------------------+--------------------|
| 17MB | (1) 4M x 36 | (1) 256K x 36 |
|------------------+--------------------+--------------------|
| 18MB | (1) 4M x 36 | (1) 512K x 36 |
|------------------+--------------------+--------------------|
| 20MB | (1) 4M x 36 | (1) 1M x 36 |
|------------------+--------------------+--------------------|
| 24MB | (1) 4M x 36 | (1) 2M x 36 |
|------------------+--------------------+--------------------|
| 32MB | (1) 4M x 36 | (1) 4M x 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | E2 |
|------------------------------+-----------------------------|
| 25MHz | Closed |
|------------------------------+-----------------------------|
| 33MHz | Open |
|------------------------------+-----------------------------|
| 50iMHz | Closed |
|------------------------------+-----------------------------|
| 66IMHz | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | E6 | E7 | E8 | E9 | E10 |
|-------------------+-------+--------+-------+-------+-------|
| 80486SX (PQFP) | 1 & 2 | Closed | 2 & 3 | 1 & 2 | 2 & 3 |
|-------------------+-------+--------+-------+-------+-------|
| 80486SX (PGA) | 1 & 2 | Open | 1 & 2 | 2 & 3 | 1 & 2 |
|-------------------+-------+--------+-------+-------+-------|
| 80487SX, ODP | 1 & 2 | Closed | 2 & 3 | 1 & 2 | 2 & 3 |
|-------------------+-------+--------+-------+-------+-------|
| 80486DX,DX2,ODPR | 1 & 2 | Closed | 1 & 2 | 2 & 3 | 2 & 3 |
|-------------------+-------+--------+-------+-------+-------|
| Pentium Overdrive | 2 & 3 | Closed | 2 & 3 | 1 & 2 | 2 & 3 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
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