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# ELITEGROUP COMPUTER SYSTEMS, INC.
P5TX-A
Processor CX M1/AM K5/Pentium
Processor Speed 90/100/120/133/150/166/200/233MHz
Chip Set Intel
Video Chip Set None
Maximum Onboard 256MB (EDO supported)
Memory
Maximum Video None
Memory
Cache 256/512KB
BIOS Award
Dimensions 324mm x 187mm
I/O Options 32-bit PCI slots (4), floppy drive interface,
green PC connector, IDE interfaces (2),
parallel port, PS/2 mouse port, serial ports
(2), IR connector, USB connector, ATX power
connector
NPU Options None
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------+-----------+-----------------+-----------|
| ATX power | ATX | Green PC LED | J10 pins |
| connector | | | 6 - 8 |
|------------------+-----------+-----------------+-----------|
| PS/2 mouse port | J2 | Reset switch | J10 pins |
| | | | 9 & 10 |
|------------------+-----------+-----------------+-----------|
| Serial port 1 | J3 | Keylock | J10 pins |
| | | | 11 & 12 |
|------------------+-----------+-----------------+-----------|
| Serial port 2 | J4 | Speaker | J10 pins |
| | | | 13 - 16 |
|------------------+-----------+-----------------+-----------|
| Parallel port | J6 | IDE interface | J10 pins |
| | | LED | 17 & 18 |
|------------------+-----------+-----------------+-----------|
| Floppy drive | J7 | Power on switch | J10 pins |
| interface | | | 19 & 20 |
|------------------+-----------+-----------------+-----------|
| IDE interface 2 | J8 | USB connector | J11 |
|------------------+-----------+-----------------+-----------|
| IDE interface 1 | J9 | IR connector | J13 |
|------------------+-----------+-----------------+-----------|
| Power LED | J10 pins | Chassis fan | J14 |
| | 1 - 3 | power | |
|------------------+-----------+-----------------+-----------|
| Green PC | J10 pins | 32-bit PCI | PC1 – PC4 |
| connector | 4 & 5 | slots | |
|------------------------------------------------------------|
| Note: On some models, J13 may be labeled as J12. J12 will |
| be a 5-pin IR connector. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|----------------------------------+-------+-----------------|
| » | CMOS memory normal operation | JP2 | Pins 2 & 3 |
| | | | closed |
|---+------------------------------+-------+-----------------|
| | CMOS memory clear | JP2 | Pins 1 & 2 |
| | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIMM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 |
|------------+---------------+---------------+---------------|
| 8MB | (1) 1M x 64 | None | None |
|------------+---------------+---------------+---------------|
| 16MB | (1) 1M x 64 | (1) 1M x 64 | None |
|------------+---------------+---------------+---------------|
| 24MB | (1) 1M x 64 | (1) 1M x 64 | (1) 1M x 64 |
|------------+---------------+---------------+---------------|
| 16MB | (1) 2M x 64 | None | None |
|------------+---------------+---------------+---------------|
| 32MB | (1) 2M x 64 | (1) 2M x 64 | None |
|------------+---------------+---------------+---------------|
| 48MB | (1) 2M x 64 | (1) 2M x 64 | (1) 2M x 64 |
|------------+---------------+---------------+---------------|
| 32MB | (1) 4M x 64 | None | None |
|------------+---------------+---------------+---------------|
| 64MB | (1) 4M x 64 | (1) 4M x 64 | None |
|------------+---------------+---------------+---------------|
| 96MB | (1) 4M x 64 | (1) 4M x 64 | (1) 4M x 64 |
|------------+---------------+---------------+---------------|
| 64MB | (1) 8M x 64 | None | None |
|------------+---------------+---------------+---------------|
| 128MB | (1) 8M x 64 | (1) 8M x 64 | None |
|------------+---------------+---------------+---------------|
| 192MB | (1) 8M x 64 | (1) 8M x 64 | (1) 8M x 64 |
|------------+---------------+---------------+---------------|
| 128MB | (1) 16M x 64 | None | None |
|------------+---------------+---------------+---------------|
| 256MB | (1) 16M x 64 | (1) 16M x 64 | None |
|------------------------------------------------------------|
| Note: Board accepts EDO memory. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIMM VOLTAGE CONFIGURATION |
|------------------------------------------------------------|
| Voltage | JP5 |
|--------------------------+---------------------------------|
| » | 3.3v | Pins 1 & 2, 4 & 5, 7 & 8 closed |
|---+----------------------+---------------------------------|
| | 5v | Pins 2 & 3, 5 & 6, 8 & 9 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 |
|----------------------------+-------------------------------|
| 256KB | (2) 32K x 32 |
|----------------------------+-------------------------------|
| 512KB | (2) 64K x 32 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CYRIX) |
|------------------------------------------------------------|
| CPU speed | Clock | Multiplier | JP1 |
| | speed | | |
|------------+---------+------------+------------------------|
| 133MHz | 55MHz | 2x | 1 & 3, 4 & 6, 11 & 13, |
| | | | 17 & 19, 20 & 22 |
|------------+---------+------------+------------------------|
| 150MHz | 60MHz | 2x | 1 & 3, 4 & 6, 11 & 13, |
| | | | 17 & 19, 18 & 20 |
|------------+---------+------------+------------------------|
| 166MHz | 66MHz | 2x | 1 & 3, 4 & 6, 9 & 11, |
| | | | 17 & 19, 18 & 20 |
|------------+---------+------------+------------------------|
| 200MHz | 75MHz | 2x | 1 & 3, 4 & 6, 9 & 11, |
| | | | 17 & 19, 20 & 22 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (AMD) |
|------------------------------------------------------------|
| CPU speed | Clock | Multiplier | JP1 |
| | speed | | |
|------------+---------+------------+------------------------|
| 90MHz | 60MHz | 1.5x | 1 & 3, 2 & 4, 11 & 13, |
| | | | 17 & 19, 18 & 20 |
|------------+---------+------------+------------------------|
| 100MHz | 66MHz | 1.5x | 1 & 3, 2 & 4, 9 & 11, |
| | | | 17 & 19, 18 & 20 |
|------------+---------+------------+------------------------|
| 120MHz | 60MHz | 2x | 1 & 3, 4 & 6, 11 & 13, |
| | | | 17 & 19, 18 & 20 |
|------------+---------+------------+------------------------|
| 133MHz | 66MHz | 2x | 1 & 3, 4 & 6, 9 & 11, |
| | | | 17 & 19, 18 & 20 |
|------------+---------+------------+------------------------|
| 166MHz | 66MHz | 2.5x | 3 & 5, 4 & 6, 9 & 11, |
| | | | 17 & 19, 18 & 20 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (INTEL) |
|------------------------------------------------------------|
| CPU speed | Clock | Multiplier | JP1 |
| | speed | | |
|------------+---------+------------+------------------------|
| 90MHz | 60MHz | 1.5x | 1 & 3, 2 & 4, 11 & 13, |
| | | | 17 & 19, 18 & 20 |
|------------+---------+------------+------------------------|
| 100MHz | 66MHz | 1.5x | 1 & 3, 2 & 4, 9 & 11, |
| | | | 17 & 19, 18 & 20 |
|------------+---------+------------+------------------------|
| 120MHz | 60MHz | 2x | 1 & 3, 4 & 6, 11 & 13, |
| | | | 17 & 19, 18 & 20 |
|------------+---------+------------+------------------------|
| 133MHz | 66MHz | 2x | 1 & 3, 4 & 6, 9 & 11, |
| | | | 17 & 19, 18 & 20 |
|------------+---------+------------+------------------------|
| 150MHz | 60MHz | 2.5x | 3 & 5, 4 & 6, 11 & 13, |
| | | | 17 & 19, 18 & 20 |
|------------+---------+------------+------------------------|
| 166MHz | 66MHz | 2.5x | 3 & 5, 4 & 6, 9 & 11, |
| | | | 17 & 19, 18 & 20 |
|------------+---------+------------+------------------------|
| 200MHz | 66MHz | 3x | 2 & 4, 3 & 5, 9 & 11, |
| | | | 17 & 19, 18 & 20 |
|------------+---------+------------+------------------------|
| 233MHz | 66MHz | 3.5x | 1 & 3, 2 & 4, 9 & 11, |
| | | | 17 & 19, 18 & 20 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION (SINGLE) |
|------------------------------------------------------------|
| Voltage | JP3 |
|----------------------------+-------------------------------|
| » | 3.52v | Pins 3 & 4 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION (DUAL) |
|------------------------------------------------------------|
| Voltage | V core | JP3 | JP4 |
|----------+--------+-------------------+--------------------|
| | 3.3v | 2.5v | Pins 1 & 2 closed | Pins 1 & 2 closed |
|---+------+--------+-------------------+--------------------|
| » | 3.3v | 2.8v | Pins 1 & 2 closed | Pins 3 & 4 closed |
|---+------+--------+-------------------+--------------------|
| | 3.3v | 2.9v | Pins 1 & 2 closed | Pins 5 & 6 closed |
|---+------+--------+-------------------+--------------------|
| | 3.3v | 3.3v | Pins 1 & 2 closed | Pins 9 & 10 closed |
+------------------------------------------------------------+