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# ASUS COMPUTER INTERNATIONAL
P/I-P55TP4N
Processor Pentium
Processor Speed 75/90/100/120/133/150/166MHz
Chip Set Intel
Video Chip Set None
Maximum Onboard 128MB DRAM (EDO supported)
Memory
Maximum Video None
Memory
Cache 256/5128KB
BIOS Award
Dimensions 330mm x 218mm
I/O Options 32-bit PCI slots (4), floppy drive interface,
green PC connector, IDE interfaces (2),
parallel port, PS/2 mouse interface, serial
ports (2), cache slot, IR connector, MediaBus
slot
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------+-----------+----------------+------------|
| Serial port 1 | CN1 | Turbo LED | CON1 pins |
| | | | 12 & 13 |
|------------------+-----------+----------------+------------|
| Serial port 2 | CN2 | Green PC | CON1 pins |
| | | connector | 14 & 15 |
|------------------+-----------+----------------+------------|
| Parallel port | CN3 | Reset switch | CON1 pins |
| | | | 19 & 20 |
|------------------+-----------+----------------+------------|
| Floppy drive | CN4 | IDE interface | JP17 |
| interface | | LED | |
|------------------+-----------+----------------+------------|
| IDE interface 1 | CN5 | Chassis fan | JP30 |
| | | power | |
|------------------+-----------+----------------+------------|
| IDE interface 2 | CN6 | IR connector | JP31 |
|------------------+-----------+----------------+------------|
| PS/2 mouse | CN7 | 32-bit PCI | PC1 - PC4 |
| interface | | slots | |
|------------------+-----------+----------------+------------|
| Power LED & | CON1 pins | Cache slot | SL1 |
| keylock | 1 - 5 | | |
|------------------+-----------+----------------+------------|
| Speaker | CON1 pins | MediaBus slot | SL2 |
| | 7 - 10 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|---------------------------------------+-------+------------|
| » | On board multi I/O enabled | JP4 | Pins 1 & 2 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| | On board multi I/O disabled | JP4 | Pins 2 & 3 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| » | Flash BIOS write protect disabled | JP5 | Pins 1 & 2 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| | Flash BIOS write protect enabled | JP5 | Pins 2 & 3 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| » | PS/2 mouse IRQ12 disabled | JP7 | Pins 2 & 3 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| | PS/2 mouse IRQ12 enabled | JP7 | Pins 1 & 2 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| » | CMOS memory normal operation | JP13 | Open |
|---+-----------------------------------+-------+------------|
| | CMOS memory clear | JP13 | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 8MB | (2) 1M x 36 | None |
|------------------+--------------------+--------------------|
| 8MB | None | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 16MB | (2) 2M x 36 | None |
|------------------+--------------------+--------------------|
| 16MB | None | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 16MB | (2) 1M x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 24MB | (2) 2M x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 24MB | (2) 1M x 36 | (2) 2M 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 |
|------------------+--------------------+--------------------|
| 40MB | (2) 1M x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 48MB | (2) 4M x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 48MB | (2) 2M x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 64MB | (2) 8M x 36 | None |
|------------------+--------------------+--------------------|
| 64MB | None | (2) 8M x 36 |
|------------------+--------------------+--------------------|
| 64MB | (2) 4M x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 72MB | (2) 8M x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 72MB | (2) 1M x 36 | (2) 8M x 36 |
|------------------+--------------------+--------------------|
| 80MB | (2) 8M x 36 | (2) 2M x 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 80MB | (2) 2M x 36 | (2) 8M x 36 |
|------------------+--------------------+--------------------|
| 96MB | (2) 8M x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 96MB | (2) 4M x 36 | (2) 8M x 36 |
|------------------+--------------------+--------------------|
| 128MB | (2) 8M x 36 | (2) 8M x 36 |
|------------------------------------------------------------|
| Note: Board accepts EDO memory. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | SL1 |
|----------------+------------------+------------------------|
| 256KB (A) | (2) 32K x 32 | None |
|----------------+------------------+------------------------|
| 256KB (B) | None | 256KB module installed |
|----------------+------------------+------------------------|
| 512KB (A) | (2) 32K x 32 | 256KB module installed |
|----------------+------------------+------------------------|
| 512KB (B) | None | 512KB module installed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP12 | JP16 |
|------------------+--------------------+--------------------|
| 256KB (A/B) | Pins 2 & 3 closed | Pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| 512KB (A/B) | Pins 1 & 2 closed | Pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION |
|------------------------------------------------------------|
| CPU | Clock |Multiplier| JP14 | JP15 |JP26 |JP27 |JP28 |
| Speed | Speed | | | | | | |
|-------+---------+----------+------+------+-----+-----+-----|
| 75MHz | 50MHz | 1.5x | Open | Open |1 & 2|2 & 3|2 & 3|
|-------+---------+----------+------+------+-----+-----+-----|
| 90MHz | 60MHz | 1.5x | Open | Open |2 & 3|2 & 3|1 & 2|
|-------+---------+----------+------+------+-----+-----+-----|
|100MHz | 66MHz | 1.5x | Open | Open |2 & 3|1 & 2|2 & 3|
|-------+---------+----------+------+------+-----+-----+-----|
|120MHz | 60MHz | 2x | Open |Closed|2 & 3|2 & 3|1 & 2|
|-------+---------+----------+------+------+-----+-----+-----|
|133MHz | 66MHz | 2x | Open |Closed|2 & 3|1 & 2|2 & 3|
|-------+---------+----------+------+------+-----+-----+-----|
|150MHz | 60MHz | 2.5x |Closed|Closed|2 & 3|2 & 3|1 & 2|
|-------+---------+----------+------+------+-----+-----+-----|
|166MHz | 66MHz | 2.5x |Closed|Closed|2 & 3|1 & 2|2 & 3|
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION |
|------------------------------------------------------------|
| Voltage | JP22 | JP23 | JP24 |
|---------------+---------------+---------------+------------|
| 3.4v (STD) | Closed | Open | Open |
|---------------+---------------+---------------+------------|
| 3.5v (VRE) | Open | Closed | Open |
+------------------------------------------------------------+