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# AST RESEARCH, INC.
ADVANTAGE + (CHINA) 50179
Processor CX M1/Pentium
Processor Speed 75/90/100/120/133/150/166/200MHz
Chip Set Unidentified
Video Chip Set SIS
Maximum Onboard 128MB
Memory
Maximum Video 2MB
Memory
Cache 256KB
BIOS AST
Dimensions 254mm x 218mm
I/O Options Floppy drive interface, IDE interfaces (2),
parallel port, PS/2 mouse port, serial ports
(2), video feature connector, VGA port, riser
slot, cache slot
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| Parallel port | CN1 | Serial port 2 | J10 |
|-------------------+----------+------------------+----------|
| Serial port 1 | CN2 | Chassis fan | J17 |
| | | power | |
|-------------------+----------+------------------+----------|
| PS/2 mouse port | CN3 | Video feature | JP2 |
| | | connector | |
|-------------------+----------+------------------+----------|
| VGA port | CN4 | Floppy drive | JP5 |
| | | interface | |
|-------------------+----------+------------------+----------|
| IDE interface LED | J1 | IDE interface 2 | JP6 |
|-------------------+----------+------------------+----------|
| Speaker | J2 | IDE interface 1 | JP7 |
|-------------------+----------+------------------+----------|
| Reset switch | J3 | Riser slot | SL1 |
|-------------------+----------+------------------+----------|
| Power LED & | J4 | Cache slot | SL2 |
| keylock | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|-------------------------------------+-------+--------------|
| » | VGA IRQ disabled | JP1 | Open |
|---+---------------------------------+-------+--------------|
| | VGA IRQ enabled | JP1 | Closed |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | JP11 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Password normal operation | JP14 | Closed |
|---+---------------------------------+-------+--------------|
| | Password clear | JP14 | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 8MB | (2) 1M x 36 | None |
|------------------+--------------------+--------------------|
| 16MB | (2) 2M x 36 | None |
|------------------+--------------------+--------------------|
| 16MB | (2) 1M x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 24MB | (2) 2M x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 32MB | (2) 4M x 36 | None |
|------------------+--------------------+--------------------|
| 32MB | (2) 2M x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 40MB | (2) 4M x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 48MB | (2) 4M x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 64MB | (2) 8M x 36 | None |
|------------------+--------------------+--------------------|
| 64MB | (2) 4M x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 72MB | (2) 8M x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 80MB | (2) 8M x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 96MB | (2) 8M x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 128MB | (2) 8M x 36 | (2) 8M x 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | SL2 |
|----------------------------+-------------------------------|
| 256KB | 256KB module installed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Type | JP8 |
|-----------------------------------+------------------------|
| » | Asynchronous | Pins 1 & 2 closed |
|---+-------------------------------+------------------------|
| | Synchronous, pipeline burst | Pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VIDEO MEMORY CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+----------------------+------------------|
| 1MB | 1MB | None |
|------------------+----------------------+------------------|
| 2MB | 1MB | 1MB |
|------------------------------------------------------------|
| Note: The location of banks 0 & 1 are unidentified. The |
| size of the chips are unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CYRIX) |
|------------------------------------------------------------|
|CPU speed| Clock |Multiplier| BF0 |BF1 | JP3 | JP4 |JP5 |
| | speed | | | | | | |
|---------+---------+----------+-----+----+------+------+----|
| 100MHz | 50MHz | 2x |2 & 3|Open|Closed| Open |Open|
|---------+---------+----------+-----+----+------+------+----|
| 120MHz | 60MHz | 2x |2 & 3|Open|Closed|Closed|Open|
|------------------------------------------------------------|
|Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (INTEL) |
|------------------------------------------------------------|
| CPU | Clock |Multiplier|BF0 | BF1 | JP3 | JP4 | JP5 |
| speed | speed | | | | | | |
|-------+--------+----------+----+------+------+------+------|
| 75MHz | 50MHz | 1.5x |1 & | Open | Open | Open | Open |
| | | | 2 | | | | |
|-------+--------+----------+----+------+------+------+------|
|100MHz | 66MHz | 1.5x |1 & | Open |Closed| Open |Closed|
| | | | 2 | | | | |
|-------+--------+----------+----+------+------+------+------|
|133MHz | 66MHz | 2x |2 & | Open |Closed| Open |Closed|
| | | | 3 | | | | |
|-------+--------+----------+----+------+------+------+------|
|150MHz | 60MHz | 2.5x |2 & |Closed|Closed|Closed| Open |
| | | | 3 | | | | |
|-------+--------+----------+----+------+------+------+------|
|166MHz | 66MHz | 2.5x |2 & |Closed|Closed| Open |Closed|
| | | | 3 | | | | |
|-------+--------+----------+----+------+------+------+------|
|200MHz | 66MHz | 3x |1 & |Closed|Closed| Open |Closed|
| | | | 2 | | | | |
|------------------------------------------------------------|
|Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE SELECTION |
|------------------------------------------------------------|
| Type | JP9 |
|-------------------------------+----------------------------|
| VR (3.3v - 3.4v) | Closed |
|-------------------------------+----------------------------|
| VRE (3.4v - 3.6v) | Open |
+------------------------------------------------------------+