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# ASUS COMPUTER INTERNATIONAL
P/I-P55SP4V
Processor CX M1/AM K5/Pentium
Processor Speed 75/90/100/120/133/150/166/180/200MHz
Chip Set SIS
Video Chip Set SIS
Maximum Onboard 256MB (EDO supported)
Memory
Maximum Video 2MB
Memory
Cache 512KB
BIOS Unidentified
Dimensions 254mm x 218mm
I/O Options 32-bit PCI slots (4), floppy drive interface,
green PC connector, IDE interfaces (2),
parallel port, serial ports (2), VGA feature
connector, IR connector, USB connector,
VGA-PS/2 mouse connector, MediaBus slot
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------+-----------+---------------+-------------|
| Serial port 1 | CN1 | Speaker | CN10 pins 7 |
| | | | - 10 |
|------------------+-----------+---------------+-------------|
| Serial port 2 | CN2 | Turbo LED | CN10 pins |
| | | | 12 & 13 |
|------------------+-----------+---------------+-------------|
| Parallel port | CN3 | Green PC | CN10 pins |
| | | connector | 14 & 15 |
|------------------+-----------+---------------+-------------|
| IDE interface 1 | CN4 | Reset switch | CN10 pins |
| | | | 19 & 20 |
|------------------+-----------+---------------+-------------|
| IDE interface 2 | CN5 | IDE interface | CN11 |
| | | LED | |
|------------------+-----------+---------------+-------------|
| Floppy drive | CN6 | IR connector | CN12 |
| interface | | | |
|------------------+-----------+---------------+-------------|
| VGA-PS/2 mouse | CN7 | Chassis fan | CN13 |
| connector | | power | |
|------------------+-----------+---------------+-------------|
| USB connector | CN8 | 32-bit PCI | PC1 - PC4 |
| | | slots | |
|------------------+-----------+---------------+-------------|
| VGA feature | CN9 | MediaBus slot | SL1 |
| connector | | | |
|------------------+-----------+---------------+-------------|
| Power LED & | CN10 pins | | |
| keylock | 1 - 5 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|-----------------------------------+-------+----------------|
| » | On board I/O enabled | JP1 | Pins 1 & 2 |
| | | | closed |
|---+-------------------------------+-------+----------------|
| | On board I/O disabled | JP1 | Pins 2 & 3 |
| | | | closed |
|---+-------------------------------+-------+----------------|
| » | Flash BIOS normal operation | JP8 | Pins 1 & 2 |
| | | | closed |
|---+-------------------------------+-------+----------------|
| | Flash BIOS boot block enabled | JP8 | Pins 2 & 3 |
| | | | closed |
|---+-------------------------------+-------+----------------|
| » | CMOS memory normal operation | JP16 | Pins 1 & 2 |
| | | | closed |
|---+-------------------------------+-------+----------------|
| | CMOS memory clear | JP16 | Pins 2 & 3 |
| | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 |
|---------------+----------------------+---------------------|
| 128MB | (2) 16M x 36 | None |
|---------------+----------------------+---------------------|
| 136MB | (2) 16M x 36 | (2) 1M x 36 |
|---------------+----------------------+---------------------|
| 144MB | (2) 16M x 36 | (2) 2M x 36 |
|---------------+----------------------+---------------------|
| 160MB | (2) 16M x 36 | (2) 4M x 36 |
|---------------+----------------------+---------------------|
| 192MB | (2) 16M x 36 | (2) 8M x 36 |
|---------------+----------------------+---------------------|
| 256MB | (2) 16M x 36 | (2) 16M x 36 |
|------------------------------------------------------------|
| Note: Board accepts EDO memory. Banks are interchangeable. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 |
|----------------------------+-------------------------------|
| 512KB | (3) 64K x 32 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | JP4 |
|----------------------------+-------------------------------|
| Linear mode | Pins 1 & 2 closed |
|----------------------------+-------------------------------|
| Burst mode | Pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CYRIX) |
|------------------------------------------------------------|
|CPU speed| Clock |Multiplier| JP5 | JP6 | JP7 |JP11 |JP12 |
| | speed | | | | | | |
|---------+---------+----------+-----+-----+-----+-----+-----|
| 166MHz | 66MHz | 2x |1 & 2|1 & 2|1 & 2|1 & 2|2 & 3|
|------------------------------------------------------------|
|Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (AMD) |
|------------------------------------------------------------|
|CPU speed| Clock |Multiplier| JP5 | JP6 | JP7 |JP11 |JP12 |
| | speed | | | | | | |
|---------+---------+----------+-----+-----+-----+-----+-----|
| 75MHz | 50MHz | 1.5x |1 & 2|2 & 3|2 & 3|1 & 2|1 & 2|
|---------+---------+----------+-----+-----+-----+-----+-----|
| 90MHz | 60MHz | 1.5x |1 & 2|1 & 2|2 & 3|1 & 2|1 & 2|
|---------+---------+----------+-----+-----+-----+-----+-----|
| 100MHz | 66MHz | 1.5x |1 & 2|1 & 2|1 & 2|1 & 2|1 & 2|
|------------------------------------------------------------|
|Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (INTEL) |
|------------------------------------------------------------|
|CPU speed| Clock |Multiplier| JP5 | JP6 | JP7 |JP11 |JP12 |
| | speed | | | | | | |
|---------+---------+----------+-----+-----+-----+-----+-----|
| 75MHz | 50MHz | 1.5x |1 & 2|2 & 3|2 & 3|1 & 2|1 & 2|
|---------+---------+----------+-----+-----+-----+-----+-----|
| 90MHz | 60MHz | 1.5x |1 & 2|1 & 2|2 & 3|1 & 2|1 & 2|
|---------+---------+----------+-----+-----+-----+-----+-----|
| 100MHz | 66MHz | 1.5x |1 & 2|1 & 2|1 & 2|1 & 2|1 & 2|
|---------+---------+----------+-----+-----+-----+-----+-----|
| 120MHz | 60MHz | 2x |1 & 2|1 & 2|2 & 3|1 & 2|2 & 3|
|---------+---------+----------+-----+-----+-----+-----+-----|
| 133MHz | 66MHz | 2x |1 & 2|1 & 2|1 & 2|1 & 2|2 & 3|
|---------+---------+----------+-----+-----+-----+-----+-----|
| 150MHz | 60MHz | 2.5x |1 & 2|1 & 2|2 & 3|2 & 3|2 & 3|
|---------+---------+----------+-----+-----+-----+-----+-----|
| 166MHz | 66MHz | 2.5x |1 & 2|1 & 2|1 & 2|2 & 3|2 & 3|
|---------+---------+----------+-----+-----+-----+-----+-----|
| 180MHz | 60MHz | 3x |1 & 2|1 & 2|2 & 3|2 & 3|1 & 2|
|---------+---------+----------+-----+-----+-----+-----+-----|
| 200MHz | 66MHz | 3x |1 & 2|1 & 2|1 & 2|2 & 3|1 & 2|
|------------------------------------------------------------|
|Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION (SINGLE) |
|------------------------------------------------------------|
| Voltage | JP23 | JP24 |
|-----------------------+------------------+-----------------|
| » | 3.38v | Closed | Open |
|----+------------------+------------------+-----------------|
| | 3.52v | Open | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION (DUAL) |
|------------------------------------------------------------|
| Voltage | JP25 | JP26 | JP27 | JP28 | JP29 |
|--------------+---------+--------+--------+--------+--------|
| | 2.5v | Open | Open | Open | Closed | Open |
|---+----------+---------+--------+--------+--------+--------|
| | 2.7v | Open | Closed | Open | Open | Open |
|---+----------+---------+--------+--------+--------+--------|
| » | 2.8v | Closed | Open | Open | Open | Open |
|---+----------+---------+--------+--------+--------+--------|
| | 2.88v | Open | Open | Closed | Open | Open |
|---+----------+---------+--------+--------+--------+--------|
| | Reserved | Open | Open | Open | Open | Closed |
+------------------------------------------------------------+