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# ASUS COMPUTER INTERNATIONAL
P/I-P55T2P4 (REV. 3.10)
Processor CX M1/AM K5/Pentium
Processor Speed 75/90/100/120/133/150/166/200MHz
Chip Set Intel
Video Chip Set None
Maximum Onboard 256MB (EDO supported)
Memory
Maximum Video None
Memory
Cache 256/512KB
BIOS Unidentified
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, USB
connector, MediaBus slot
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|---------------------+----------+---------------+-----------|
| Serial port 1 | CN1 | Turbo LED | CN9 pins |
| | | | 12 & 13 |
|---------------------+----------+---------------+-----------|
| Serial port 2 | CN2 | Green PC | CN9 pins |
| | | connector | 14 & 15 |
|---------------------+----------+---------------+-----------|
| Parallel port | CN3 | Reset switch | CN9 pins |
| | | | 19 & 20 |
|---------------------+----------+---------------+-----------|
| Floppy drive | CN4 | IDE interface | CN10 |
| interface | | LED | |
|---------------------+----------+---------------+-----------|
| IDE interface 1 | CN5 | Chassis fan | CN11 |
| | | power | |
|---------------------+----------+---------------+-----------|
| IDE interface 2 | CN6 | IR connector | CN12 |
|---------------------+----------+---------------+-----------|
| PS/2 mouse | CN7 | 32-bit PCI | PC1 - PC4 |
| interface | | slots | |
|---------------------+----------+---------------+-----------|
| USB connector | CN8 | Cache slot | SL1 |
|---------------------+----------+---------------+-----------|
| Power LED & keylock | CN9 pins | MediaBus slot | SL2 |
| | 1 - 5 | | |
|---------------------+----------+---------------+-----------|
| Speaker | CN9 pins | | |
| | 7 - 10 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 | JP2 | Pins 1 & 2 |
| | | | closed |
|---+-------------------------------+-------+----------------|
| | Flash BIOS boot block enabled | JP2 | Pins 2 & 3 |
| | | | closed |
|---+-------------------------------+-------+----------------|
| » | CMOS memory normal operation | JP7 | Open |
|---+-------------------------------+-------+----------------|
| | CMOS memory clear | JP7 | 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 | SL1 | TAG |
|------------+--------------+----------------+---------------|
| 256KB (A) | (2) 32K x 32 | Not installed | (1) 16K/32K x |
| | | | 8 |
|------------+--------------+----------------+---------------|
| 256KB (B) | None | 256KB module | (1) 16K/32K x |
| | | installed | 8 |
|------------+--------------+----------------+---------------|
| 512KB (A) | (2) 64K x 32 | Not installed | (1) 16K/32K x |
| | | | 8 |
|------------+--------------+----------------+---------------|
| 512KB (B) | None | 512KB module | (1) 16K/32K x |
| | | installed | 8 |
|------------+--------------+----------------+---------------|
| 512KB (C) | (2) 32K x 32 | 256KB module | (1) 16K/32K x |
| | | installed | 8 |
|------------------------------------------------------------|
| Note: If cache module has TAG installed, leave TAG socket |
| empty. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP5 |
|----------------------------+-------------------------------|
| 256KB (A) | Pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 256KB (B) | Pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 512KB (A) | Pins 2 & 3 closed |
|----------------------------+-------------------------------|
| 512KB (B) | Pins 2 & 3 closed |
|----------------------------+-------------------------------|
| 512KB (C) | Pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHEABLE SIZE CONFIGURATION |
|------------------------------------------------------------|
| Size | JP4 |
|----------------------------------+-------------------------|
| » | 64MB(burst or M cache) | Pins 1 & 2 closed |
|---+------------------------------+-------------------------|
| | 512MB (burst only) | Pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CYRIX) |
|------------------------------------------------------------|
|CPU speed| Clock |Multiplier| JP8 | JP9 |JP10 |JP11 |JP12 |
| | speed | | | | | | |
|---------+---------+----------+-----+-----+-----+-----+-----|
| 166MHz | 66MHz | 2x |2 & 3|1 & 2|2 & 3|2 & 3|1 & 2|
|------------------------------------------------------------|
|Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (AMD) |
|------------------------------------------------------------|
|CPU speed| Clock |Multiplier| JP8 | JP9 |JP10 |JP11 |JP12 |
| | speed | | | | | | |
|---------+---------+----------+-----+-----+-----+-----+-----|
| 75MHz | 50MHz | 1.5x |2 & 3|2 & 3|2 & 3|1 & 2|1 & 2|
|---------+---------+----------+-----+-----+-----+-----+-----|
| 90MHz | 60MHz | 1.5x |2 & 3|2 & 3|1 & 2|1 & 2|1 & 2|
|---------+---------+----------+-----+-----+-----+-----+-----|
| 100MHz | 66MHz | 1.5x |2 & 3|1 & 2|2 & 3|1 & 2|1 & 2|
|------------------------------------------------------------|
|Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (INTEL) |
|------------------------------------------------------------|
|CPU speed| Clock |Multiplier| JP8 | JP9 |JP10 |JP11 |JP12 |
| | speed | | | | | | |
|---------+---------+----------+-----+-----+-----+-----+-----|
| 75MHz | 50MHz | 1.5x |2 & 3|2 & 3|2 & 3|1 & 2|1 & 2|
|---------+---------+----------+-----+-----+-----+-----+-----|
| 90MHz | 60MHz | 1.5x |2 & 3|2 & 3|1 & 2|1 & 2|1 & 2|
|---------+---------+----------+-----+-----+-----+-----+-----|
| 100MHz | 66MHz | 1.5x |2 & 3|1 & 2|2 & 3|1 & 2|1 & 2|
|---------+---------+----------+-----+-----+-----+-----+-----|
| 120MHz | 60MHz | 2x |2 & 3|2 & 3|1 & 2|2 & 3|1 & 2|
|---------+---------+----------+-----+-----+-----+-----+-----|
| 133MHz | 66MHz | 2x |2 & 3|1 & 2|2 & 3|2 & 3|1 & 2|
|---------+---------+----------+-----+-----+-----+-----+-----|
| 150MHz | 60MHz | 2.5x |2 & 3|2 & 3|1 & 2|2 & 3|1 & 2|
|---------+---------+----------+-----+-----+-----+-----+-----|
| 166MHz | 66MHz | 2.5x |2 & 3|1 & 2|2 & 3|2 & 3|2 & 3|
|---------+---------+----------+-----+-----+-----+-----+-----|
| 200MHz | 66MHz | 3x |2 & 3|1 & 2|2 & 3|1 & 2|2 & 3|
|------------------------------------------------------------|
|Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION (SINGLE) |
|------------------------------------------------------------|
| Voltage | JP17 |
|------------------------------+-----------------------------|
| » | 3.3v - 3.465v | Pins 1 & 2 closed |
|---+--------------------------+-----------------------------|
| | 3.4v - 3.6v | Pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION (DUAL) |
|------------------------------------------------------------|
| Voltage | JP20 |
|----------------------------+-------------------------------|
| 2.5v | Pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 2.7v | Pins 3 & 4 closed |
|----------------------------+-------------------------------|
| 2.8v | Pins 5 & 6 closed |
|----------------------------+-------------------------------|
| 2.9v | Pins 7 & 8 closed |
+------------------------------------------------------------+