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# AST RESEARCH, INC.
ADVANTAGE! PRO 486
(202643-110, 202688-103)
Processor 80486SX/SL80486DX/SL80486DX2/80486DX4/Pentium Overdrive
Processor 25/33/50(internal)/66(internal)/75(internal)/100(internal)MHz
Speed
Chip Set Unidentified
Max. 64MB
Onboard
DRAM
Cache 64/256KB
BIOS Unidentified
Dimensions 355mm x 305mm
I/O 32-bit VESA local bus slot, floppy drive interface, IDE
Options interface, parallel port, PS/2 mouse port, serial ports (2),
8514 video pass through connector, VGA port
NPU None
Options
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------+----------+-------------------+----------|
| VGA port | CN1 | IDE interface | J22 |
|------------------+----------+-------------------+----------|
| Parallel port | CN2 | Floppy drive | J24 |
| | | interface | |
|------------------+----------+-------------------+----------|
| Serial port | CN3 | Speaker | J27 |
|------------------+----------+-------------------+----------|
| Serial port | CN4 | Chassis fan power | J28 |
|------------------+----------+-------------------+----------|
| PS/2 mouse port | CN5 | Front panel | J29 |
| | | connector | |
|------------------+----------+-------------------+----------|
| VGA feature | J19 | 32-bit VESA local | SL1 |
| connector | | bus slot | |
|------------------------------------------------------------|
| Note: The location of J27 is unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | Parallel port IRQ select IRQ7 | E2 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Parallel port IRQ select IRQ5 | E2 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | On board video enabled | E7 | Closed |
|---+----------------------------------+--------+------------|
| | On board video disabled | E7 | Open |
|---+----------------------------------+--------+------------|
| » | Monitor type select color | E8 | Closed |
|---+----------------------------------+--------+------------|
| | Monitor type select monochrome | E8 | Open |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | E9 | Closed |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Password enabled | E10 | Closed |
|---+----------------------------------+--------+------------|
| | Password disabled | E10 | Open |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | E11 | Open |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | E16 | Open |
| | alter | | |
|------------------------------------------------------------|
| Note: The locations of E11 & E16 are unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|------+-------------+-------------+------------+------------|
| 1MB | (1) 256K x | NONE | NONE | NONE |
| | 32 | | | |
|------+-------------+-------------+------------+------------|
| 2MB | (1) 256K x | (1) 256K x | NONE | NONE |
| | 32 | 32 | | |
|------+-------------+-------------+------------+------------|
| 3MB | (1) 256K x | (1) 256K x | (1) 256K x | NONE |
| | 32 | 32 | 32 | |
|------+-------------+-------------+------------+------------|
| 4MB | (1) 1M x 32 | NONE | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 4MB | (1) 256K x | (1) 256K x | (1) 256K x | (1) 256K x |
| | 32 | 32 | 32 | 32 |
|------+-------------+-------------+------------+------------|
| 5MB | (1) 1M x 32 | (1) 256K x | NONE | NONE |
| | | 32 | | |
|------+-------------+-------------+------------+------------|
| 6MB | (1) 1M x 32 | (1) 256K x | (1) 256K x | NONE |
| | | 32 | 32 | |
|------+-------------+-------------+------------+------------|
| 7MB | (1) 1M x 32 | (1) 256K x | (1) 256K x | (1) 256K x |
| | | 32 | 32 | 32 |
|------+-------------+-------------+------------+------------|
| 8MB | (1) 1M x 32 | (1) 1M x 32 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 9MB | (1) 1M x 32 | (1) 1M x 32 | (1) 256K x | NONE |
| | | | 32 | |
|------+-------------+-------------+------------+------------|
| 10MB | (1) 1M x 32 | (1) 1M x 32 | (1) 256K x | (1) 256K x |
| | | | 32 | 32 |
|------+-------------+-------------+------------+------------|
| 12MB | (1) 1M x 32 | (1) 1M x 32 | (1) 1M x | NONE |
| | | | 32 | |
|------+-------------+-------------+------------+------------|
| 13MB | (1) 1M x 32 | (1) 1M x 32 | (1) 1M x | (1) 256K x |
| | | | 32 | 32 |
|------+-------------+-------------+------------+------------|
| 16MB | (1) 4M x 32 | NONE | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 16MB | (1) 1M x 32 | (1) 1M x 32 | (1) 1M x | (1) 1M x |
| | | | 32 | 32 |
|------+-------------+-------------+------------+------------|
| 17MB | (1) 4M x 32 | (1) 256K x | NONE | NONE |
| | | 32 | | |
|------+-------------+-------------+------------+------------|
| 18MB | (1) 4M x 32 | (1) 256K x | (1) 256K x | NONE |
| | | 32 | 32 | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|------+-------------+-------------+------------+------------|
| 19MB | (1) 4M x 32 | (1) 256K x | (1) 256K x | (1) 256K x |
| | | 32 | 32 | 32 |
|------+-------------+-------------+------------+------------|
| 20MB | (1) 4M x 32 | (1) 1M x 32 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 21MB | (1) 4M x 32 | (1) 1M x 32 | (1) 256K x | NONE |
| | | | 32 | |
|------+-------------+-------------+------------+------------|
| 22MB | (1) 4M x 32 | (1) 1M x 32 | (1) 256K x | (1) 256K x |
| | | | 32 | 32 |
|------+-------------+-------------+------------+------------|
| 24MB | (1) 4M x 32 | (1) 1M x 32 | (1) 1M x | NONE |
| | | | 32 | |
|------+-------------+-------------+------------+------------|
| 25MB | (1) 4M x 32 | (1) 1M x 32 | (1) 1M x | (1) 256K x |
| | | | 32 | 32 |
|------+-------------+-------------+------------+------------|
| 28MB | (1) 4M x 32 | (1) 1M x 32 | (1) 1M x | (1) 1M x |
| | | | 32 | 32 |
|------+-------------+-------------+------------+------------|
| 32MB | (1) 4M x 32 | (1) 4M x 32 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 33MB | (1) 4M x 32 | (1) 4M x 32 | (1) 256K x | NONE |
| | | | 32 | |
|------+-------------+-------------+------------+------------|
| 34MB | (1) 4M x 32 | (1) 4M x 32 | (1) 256K x | (1) 256K x |
| | | | 32 | 32 |
|------+-------------+-------------+------------+------------|
| 36MB | (1) 4M x 32 | (1) 4M x 32 | (1) 1M x | NONE |
| | | | 32 | |
|------+-------------+-------------+------------+------------|
| 37MB | (1) 4M x 32 | (1) 4M x 32 | (1) 1M x | (1) 256K x |
| | | | 32 | 32 |
|------+-------------+-------------+------------+------------|
| 40MB | (1) 4M x 32 | (1) 4M x 32 | (1) 1M x | (1) 1M x |
| | | | 32 | 32 |
|------+-------------+-------------+------------+------------|
| 48MB | (1) 4M x 32 | (1) 4M x 32 | (1) 4M x | NONE |
| | | | 32 | |
|------+-------------+-------------+------------+------------|
| 49MB | (1) 4M x 32 | (1) 4M x 32 | (1) 4M x | (1) 256K x |
| | | | 32 | 32 |
|------+-------------+-------------+------------+------------|
| 52MB | (1) 4M x 32 | (1) 4M x 32 | (1) 4M x | (1) 1M x |
| | | | 32 | 32 |
|------+-------------+-------------+------------+------------|
| 64MB | (1) 4M x 32 | (1) 4M x 32 | (1) 4M x | (1) 4M x |
| | | | 32 | 32 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | TAG |
|------------------+--------------------+--------------------|
| 64KB | (8) 8K x 8 | (1) 8K x 9 |
|------------------+--------------------+--------------------|
| 256KB | (8) 32K x 8 | (1) 32K x 9 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | E12 | E14 |
|-------------------+--------------------+-------------------|
| None | Open | Open |
|-------------------+--------------------+-------------------|
| 64KB | Open | Open |
|-------------------+--------------------+-------------------|
| 256KB | Closed | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Type | E1 | E6 | E20 |
|---------------+-----------------+-----------------+--------|
| Write through | pins 1 & 2 | pins 1 & 2 | Open |
| | closed | closed | |
|---------------+-----------------+-----------------+--------|
| Write back | pins 2 & 3 | pins 2 & 3 | Closed |
| | closed | closed | |
|------------------------------------------------------------|
| Note: Jumper E20 may not be present on all boards. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | E3 | E4 | E5 | E13 |
|---------------+-----------+-----------+-----------+--------|
| 80486SX(PQFP) | pins 2 & | pins 2 & | pins 2 & | Open |
| | 3 closed | 3 closed | 3 closed | |
|---------------+-----------+-----------+-----------+--------|
| 80486SX(PGA) | pins 1 & | pins 1 & | pins 1 & | Closed |
| | 2 closed | 2 closed | 2 closed | |
|---------------+-----------+-----------+-----------+--------|
| SL-series | pins 2 & | pins 2 & | pins 2 & | Closed |
| CPU’s | 3 closed | 3 closed | 3 closed | |
|---------------+-----------+-----------+-----------+--------|
| P24T | pins 2 & | pins 1 & | pins 2 & | Closed |
| | 3 closed | 2 closed | 3 closed | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION (1995 MANUFACTURE DATE ONLY) |
|------------------------------------------------------------|
| Type | E17 | E18 | E19 |
|------------+----------------+---------------+--------------|
| Cyrix | pins 2 & 3 | pins 2 & 3 | pins 2 & 3 |
| | closed | closed | closed |
|------------+----------------+---------------+--------------|
| Intel | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 |
| | closed | closed | closed |
|------------------------------------------------------------|
| Note: If above jumpers are not present, the mainboard will |
| only support the CPU supplied by the factory. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | E15 |
|-------------------------------+----------------------------|
| 25MHz | Closed |
|-------------------------------+----------------------------|
| 33MHz | Open |
|-------------------------------+----------------------------|
| 50iMHz | Closed |
|-------------------------------+----------------------------|
| 66iMHz | Open |
|-------------------------------+----------------------------|
| 75iMHz | Closed |
|-------------------------------+----------------------------|
| 100iMHz | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VIDEO MEMORY CONFIGURATION (1994 MANUFACTURE DATE) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 512KB | (4) 256K x 4 | NONE |
|------------------+--------------------+--------------------|
| 1MB | (4) 256K x 4 | (4) 256K x 4 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VIDEO MEMORY CONFIGURATION (1995 MANUFACTURE DATE) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 512KB | (1) 256K x 16 | NONE |
|------------------+--------------------+--------------------|
| 1MB | (1) 256K x 16 | (1) 256K x 16 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MISCELLANEOUS TECHNICAL NOTE |
|------------------------------------------------------------|
| Board shown is 1994 manufacture date. 1994 boards only |
| accept Intel processors. 1995 boards support Intel or |
| Cyrix processors. |
+------------------------------------------------------------+