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# ASUS COMPUTER INTERNATIONAL
P/I-P55TP4N (REV. 2.0)
Device Type Mainboard
Processor Pentium
Processor Speed 75/90/100/120/133/150/166MHz
Chip Set Intel 430FX
Maximum Onboard 128MB (EDO supported)
Memory
Cache 256/512KB
BIOS Unidentified
Video Chip Set None
I/O Options 32-bit PCI slots (4), floppy drive interface,
green PC connector, IDE interface (2),
parallel port, PS/2 mouse interface, serial
ports (2), IR connector, MediaBus slot, cache
slot
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------+------------+---------------+------------|
| Serial port 1 | CN1 | Reset switch | CN9/pins 9 |
| | | | & 10 |
|------------------+------------+---------------+------------|
| Serial port 2 | CN2 | Power LED & | CN9/pins |
| | | keylock | 11-15 |
|------------------+------------+---------------+------------|
| Parallel port | CN3 | Speaker | CN9/pins |
| | | | 17-20 |
|------------------+------------+---------------+------------|
| IDE interface 1 | CN4 | IR connector | JP31 |
|------------------+------------+---------------+------------|
| IDE interface 2 | CN5 | IDE interface | JP17 |
| | | LED | |
|------------------+------------+---------------+------------|
| Floppy drive | CN6 | 32-bit PCI | PC1 - PC4 |
| interface | | slots | |
|------------------+------------+---------------+------------|
| PS/2 mouse | CN7 | Cache slot | SL1 |
| interface | | | |
|------------------+------------+---------------+------------|
| Turbo LED | CN9/pins 2 | MediaBus Slot | SL2 |
| | & 3 | | |
|------------------+------------+---------------+------------|
| Green PC | CN9/pins 4 | | |
| connector | & 5 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|---------------------------------------+-------+------------|
| » | On board I/O enabled | JP4 | Pins 1 & 2 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| | On board I/O disabled | JP4 | Pins 2 & 3 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| | Flash BIOS write protect enabled | JP5 | Pins 2 & 3 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| » | Flash BIOS write protect disabled | JP5 | Pins 1 & 2 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| » | PS/2 mouse disabled | JP7 | Pins 2 & 3 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| | PS/2 mouse 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)1MB x 32 | None |
|------------------+--------------------+--------------------|
| 16MB | (2)1MB x 32 | (2)1MB x 32 |
|------------------+--------------------+--------------------|
| 16MB | (2)2MB x 32 | None |
|------------------+--------------------+--------------------|
| 24MB | (2)2MB x 32 | (2)1MB x 32 |
|------------------+--------------------+--------------------|
| 32MB | (2)2MB x 32 | (2)2MB x 32 |
|------------------+--------------------+--------------------|
| 32MB | (2)4MB x 32 | None |
|------------------+--------------------+--------------------|
| 40MB | (2)4MB x 32 | (2)1MB x 32 |
|------------------+--------------------+--------------------|
| 48MB | (2)4MB x 32 | (2)2MB x 32 |
|------------------+--------------------+--------------------|
| 64MB | (2)4MB x 32 | (2)4MB x 32 |
|------------------+--------------------+--------------------|
| 64MB | (2)8MB x 32 | None |
|------------------+--------------------+--------------------|
| 72MB | (2)8MB x 32 | (2)1MB x 32 |
|------------------+--------------------+--------------------|
| 80MB | (2)8MB x 32 | (2)2MB x 32 |
|------------------+--------------------+--------------------|
| 96MB | (2)8MB x 32 | (2)4MB x 32 |
|------------------+--------------------+--------------------|
| 128MB | (2)8MB x 32 | (2)8MBx 32 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | SL1 |
|------------+----------------------+------------------------|
| 256KB (A) | (2) 32K x 32 | Not installed |
|------------+----------------------+------------------------|
| 256KB (B) | None | 256KB module installed |
|------------+----------------------+------------------------|
| 512KB (A) | (2) 32K x 32 | 256KB module installed |
|------------+----------------------+------------------------|
| 512KB (B) | (2) 64K x 32 | Not installed |
|------------+----------------------+------------------------|
| 512KB (C) | None | 512KB module installed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP16 |
|--------------------------+---------------------------------|
| » | 256KB | Pins 2 & 3 closed |
|---+----------------------+---------------------------------|
| | 512KB | Pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (INTEL) |
|------------------------------------------------------------|
|Speed | Clock |Multiplier| JP14 | JP15 |JP26 |JP27 |JP28 |
| | 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|
|------------------------------------------------------------|
|Note : Numbers designate pins that should be closed. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION |
|------------------------------------------------------------|
| Voltage | JP22 | JP23 | JP24 |
|---------------------+-------------+-------------+----------|
| » | 3.3V - 3.465V | Closed | Open | Open |
|---+-----------------+-------------+-------------+----------|
| | 3.4V - 3.6V | Open | Closed | Open |
+------------------------------------------------------------+