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# ELITEGROUP COMPUTER SYSTEMS, INC.
P5HX-LA
Processor CX M1/Pentium
Processor Speed 75/90/100/120/133/150/166/200MHz
Chip Set Intel
Video Chip Set ATI
Maximum Onboard 384MB
Memory
Maximum Video 2MB
Memory
Cache 256/512KB
BIOS Award
Dimensions 330mm x 218mm
I/O Options Floppy drive interface, green PC connector,
IDE interfaces (2), parallel port, PS/2 mouse
port, serial ports (2), VGA feature
connector, VGA port, riser slot, cache slot,
IR connectors (2), USB connector, CD-ROM
audio connector, wavetable connector, Modem
Blaster Pro connector, audio interface
connector
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------+----------+------------------+-----------|
| Serial port 1 | J1 | IR connector | J17 |
| | | (Fast) | |
|------------------+----------+------------------+-----------|
| Serial port 2 | J2 | Turbo LED | J18/pins |
| | | | 2 & 3 |
|------------------+----------+------------------+-----------|
| Parallel port | J3 | Green PC | J18/pins |
| | | connector | 4 & 5 |
|------------------+----------+------------------+-----------|
| PS/2 mouse port | J4 | Turbo switch | J18/pins |
| | | | 6 & 7 |
|------------------+----------+------------------+-----------|
| VGA port | J6 | Reset switch | J18/pins |
| | | | 9 & 10 |
|------------------+----------+------------------+-----------|
| CD-ROM audio in | J7 | Power LED & | J18/pins |
| connector | | keylock | 11 - 15 |
|------------------+----------+------------------+-----------|
| USB connector | J8 | Speaker | J18/pins |
| | | | 17 - 20 |
|------------------+----------+------------------+-----------|
| VGA feature | J9 | Modem Blaster | J20 |
| connector | | Pro connector | |
|------------------+----------+------------------+-----------|
| IR connector | J10 | Audio interface | J21 |
| (Intel) | | connector | |
|------------------+----------+------------------+-----------|
| Floppy drive | J11 | Chassis fan | JP18 |
| interface | | power | |
|------------------+----------+------------------+-----------|
| IDE interface 1 | J12 | Wavetable | JP19 |
| | | connector | |
|------------------+----------+------------------+-----------|
| IDE interface 2 | J13 | Riser slot | SL1 |
|------------------+----------+------------------+-----------|
| IDE interface | J15 | Cache slot | SL2 |
| LED | | | |
|------------------+----------+------------------+-----------|
| Green PC LED | J16 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|----------------------------------+-----------+-------------|
| | On board video enabled | JP1/pins | Open |
| | | 1 & 2 | |
|---+------------------------------+-----------+-------------|
| | On board video disabled | JP1/pins | Closed |
| | | 1 & 2 | |
|---+------------------------------+-----------+-------------|
| | VGA IRQ enabled | JP1/pins | Open |
| | | 3 & 4 | |
|---+------------------------------+-----------+-------------|
| | VGA IRQ disabled | JP1/pins | Closed |
| | | 3 & 4 | |
|---+------------------------------+-----------+-------------|
| | Spare I/O decoding | JP1/pins | Open |
| | | 5 & 6 | |
|---+------------------------------+-----------+-------------|
| | Block I/O decoding | JP1/pins | Closed |
| | | 5 & 6 | |
|---+------------------------------+-----------+-------------|
| » | CMOS memory normal operation | JP11 | Pins 2 & 3 |
| | | | closed |
|---+------------------------------+-----------+-------------|
| | CMOS memory clear | JP11 | Pins 1 & 2 |
| | | | closed |
|---+------------------------------+-----------+-------------|
| | Audio enabled | JP23 | Pins 2 & 3 |
| | | | closed |
|---+------------------------------+-----------+-------------|
| | Audio disabled | JP23 | Pins 1 & 2 |
| | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 |
|------------+---------------+---------------+---------------|
| 8MB | (2) 1M x 36 | None | None |
|------------+---------------+---------------+---------------|
| 16MB | (2) 1M x 36 | (2) 1M x 36 | None |
|------------+---------------+---------------+---------------|
| 16MB | (2) 2M x 36 | None | None |
|------------+---------------+---------------+---------------|
| 24MB | (2) 1M x 36 | (2) 1M x 36 | (2) 1M x 36 |
|------------+---------------+---------------+---------------|
| 24MB | (2) 2M x 36 | (2) 1M x 36 | None |
|------------+---------------+---------------+---------------|
| 32MB | (2) 2M x 36 | (2) 1M x 36 | (2) 1M x 36 |
|------------+---------------+---------------+---------------|
| 32MB | (2) 2M x 36 | (2) 2M x 36 | None |
|------------+---------------+---------------+---------------|
| 32MB | (2) 4M x 36 | None | None |
|------------+---------------+---------------+---------------|
| 40MB | (2) 4M x 36 | (2) 1M x 36 | None |
|------------+---------------+---------------+---------------|
| 48MB | (2) 2M x 36 | (2) 2M x 36 | (2) 2M x 36 |
|------------+---------------+---------------+---------------|
| 48MB | (2) 4M x 36 | (2) 1M x 36 | (2) 1M x 36 |
|------------+---------------+---------------+---------------|
| 48MB | (2) 4M x 36 | (2) 2M x 36 | None |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 |
|------------+---------------+---------------+---------------|
| 64MB | (2) 4M x 36 | (2) 2M x 36 | (2) 2M x 36 |
|------------+---------------+---------------+---------------|
| 64MB | (2) 4M x 36 | (2) 4M x 36 | None |
|------------+---------------+---------------+---------------|
| 64MB | (2) 8M x 36 | None | None |
|------------+---------------+---------------+---------------|
| 72MB | (2) 8M x 36 | (2) 1M x 36 | None |
|------------+---------------+---------------+---------------|
| 80MB | (2) 8M x 36 | (2) 1M x 36 | (2) 1M x 36 |
|------------+---------------+---------------+---------------|
| 80MB | (2) 8M x 36 | (2) 2M x 36 | None |
|------------+---------------+---------------+---------------|
| 96MB | (2) 4M x 36 | (2) 4M x 36 | (2) 4M x 36 |
|------------+---------------+---------------+---------------|
| 96MB | (2) 8M x 36 | (2) 2M x 36 | (2) 2M x 36 |
|------------+---------------+---------------+---------------|
| 96MB | (2) 8M x 36 | (2) 4M x 36 | None |
|------------+---------------+---------------+---------------|
| 128MB | (2) 8M x 36 | (2) 4M x 36 | (2) 4M x 36 |
|------------+---------------+---------------+---------------|
| 128MB | (2) 8M x 36 | (2) 8M x 36 | None |
|------------+---------------+---------------+---------------|
| 128MB | (2) 16M x 36 | None | None |
|------------+---------------+---------------+---------------|
| 136MB | (2) 16M x 36 | (2) 1M x 36 | None |
|------------+---------------+---------------+---------------|
| 144MB | (2) 16M x 36 | (2) 1M x 36 | (2) 1M x 36 |
|------------+---------------+---------------+---------------|
| 160MB | (2) 16M x 36 | (2) 4M x 36 | None |
|------------+---------------+---------------+---------------|
| 160MB | (2) 16M x 36 | (2) 2M x 36 | (2) 2M x 36 |
|------------+---------------+---------------+---------------|
| 192MB | (2) 8M x 36 | (2) 8M x 36 | (2) 8M x 36 |
|------------+---------------+---------------+---------------|
| 192MB | (2) 16M x 36 | (2) 4M x 36 | (2) 4M x 36 |
|------------+---------------+---------------+---------------|
| 192MB | (2) 16M x 36 | (2) 4M x 36 | (2) 4M x 36 |
|------------+---------------+---------------+---------------|
| 256MB | (2) 16M x 36 | (2) 8M x 36 | (2) 8M x 36 |
|------------+---------------+---------------+---------------|
| 256MB | (2) 16M x 36 | (2) 16M x 36 | None |
|------------+---------------+---------------+---------------|
| 384MB | (2) 16M x 36 | (2) 16M x 36 | (2) 16M x 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | SL1 | TAG0 | TAG1 |
|-----------+---------+------------------+---------+---------|
| 256KB (A) | (2) 32K | Not installed | (1) | None |
| | x 32 | | 8K/32 x | |
| | | | 8 | |
|-----------+---------+------------------+---------+---------|
| 256KB (B) | None | 256KB module | None | None |
| | | installed | | |
|-----------+---------+------------------+---------+---------|
| 512KB (A) | (2) 32K | 256KB module | (1) | (1) |
| | x 32 | installed | 8K/32 x | 8K/32 x |
| | | | 8 | 8 |
|-----------+---------+------------------+---------+---------|
| 512KB (B) | None | 512KB module | None | None |
| | | installed | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP4 | JP12 |
|--------------------+------------------+--------------------|
| 256KB (A) | Closed | Pins 1 & 2 closed |
|--------------------+------------------+--------------------|
| 256KB (B) | Open | Pins 1 & 2 closed |
|--------------------+------------------+--------------------|
| 512KB (A) | Closed | Pins 3 & 4 closed |
|--------------------+------------------+--------------------|
| 512KB (B) | Open | Pins 3 & 4 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VIDEO MEMORY CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 1MB | (2) 256K x 16 | None |
|------------------+--------------------+--------------------|
| 2MB | (2) 256K x 16 | (2) 256K x 16 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CYRIX) |
|------------------------------------------------------------|
| CPU | Clock | Multiplier | JP5 | JP6 | JP8 | JP14 |
| speed | speed | | | | | |
|---------+--------+------------+------+------+------+-------|
| 120MHz | 50MHz | 2x | 2 & | 1 & | 2 & | 1 & 2 |
| | | | 3 | 2 | 3 | |
|---------+--------+------------+------+------+------+-------|
| 133MHz | 55MHz | 2x | 2 & | 1 & | 1 & | 1 & 2 |
| | | | 3 | 2 | 2 | |
|---------+--------+------------+------+------+------+-------|
| 150MHz | 60MHz | 2x | 2 & | 1 & | 1 & | 1 & 2 |
| | | | 3 | 2 | 2 | |
|---------+--------+------------+------+------+------+-------|
| 166MHz | 66MHz | 2x | 2 & | 1 & | 2 & | 1 & 2 |
| | | | 3 | 2 | 3 | |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CYRIX, CON’T) |
|------------------------------------------------------------|
| CPU | Clock | Multiplier | JP15 | JP16 | JP17 | JP20 |
| speed | speed | | | | | |
|---------+--------+------------+-------+------+------+------|
| 120MHz | 50MHz | 2x | 1 & 2 | 1 & | 1 & | 2 & |
| | | | | 2 | 2 | 3 |
|---------+--------+------------+-------+------+------+------|
| 133MHz | 55MHz | 2x | 1 & 2 | 1 & | 1 & | 1 & |
| | | | | 2 | 2 | 2 |
|---------+--------+------------+-------+------+------+------|
| 150MHz | 60MHz | 2x | 1 & 2 | 1 & | 1 & | 2 & |
| | | | | 2 | 2 | 3 |
|---------+--------+------------+-------+------+------+------|
| 166MHz | 66MHz | 2x | 1 & 2 | 1 & | 1 & | 1 & |
| | | | | 2 | 2 | 2 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (INTEL) |
|------------------------------------------------------------|
| CPU | Clock | Multiplier | JP5 | JP6 | JP8 | JP14 |
| speed | speed | | | | | |
|---------+--------+------------+------+------+------+-------|
| 75MHz | 50MHz | 1.5x | 1 & | 1 & | 2 & | 1 & 2 |
| | | | 2 | 2 | 3 | |
|---------+--------+------------+------+------+------+-------|
| 90MHz | 60MHz | 1.5x | 1 & | 1 & | 1 & | 1 & 2 |
| | | | 2 | 2 | 2 | |
|---------+--------+------------+------+------+------+-------|
| 100MHz | 66MHz | 1.5x | 1 & | 1 & | 2 & | 1 & 2 |
| | | | 2 | 2 | 3 | |
|---------+--------+------------+------+------+------+-------|
| 120MHz | 60MHz | 2x | 2 & | 1 & | 1 & | 1 & 2 |
| | | | 3 | 2 | 2 | |
|---------+--------+------------+------+------+------+-------|
| 133MHz | 66MHz | 2x | 2 & | 1 & | 2 & | 1 & 2 |
| | | | 3 | 2 | 3 | |
|---------+--------+------------+------+------+------+-------|
| 150MHz | 60MHz | 2.5x | 2 & | 2 & | 1 & | 1 & 2 |
| | | | 3 | 3 | 2 | |
|---------+--------+------------+------+------+------+-------|
| 166MHz | 66MHz | 2.5x | 2 & | 2 & | 2 & | 1 & 2 |
| | | | 3 | 3 | 3 | |
|---------+--------+------------+------+------+------+-------|
| 166MHz | 66MHz | 2.5x | 2 & | 2 & | 2 & | 2 & 3 |
| (P55C) | | | 3 | 3 | 3 | |
|---------+--------+------------+------+------+------+-------|
| 200MHz | 66MHz | 3x | 1 & | 2 & | 2 & | 1 & 2 |
| | | | 2 | 3 | 3 | |
|---------+--------+------------+------+------+------+-------|
| 200MHz | 66MHz | 3x | 1 & | 2 & | 2 & | 2 & 3 |
| (P55C) | | | 2 | 3 | 3 | |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (INTEL, CON’T) |
|------------------------------------------------------------|
| CPU | Clock | Multiplier | JP15 | JP16 | JP17 | JP20 |
| speed | speed | | | | | |
|---------+--------+------------+-------+------+------+------|
| 75MHz | 50MHz | 1.5x | 1 & 2 | 1 & | 1 & | 2 & |
| | | | | 2 | 2 | 3 |
|---------+--------+------------+-------+------+------+------|
| 90MHz | 60MHz | 1.5x | 1 & 2 | 1 & | 1 & | 2 & |
| | | | | 2 | 2 | 3 |
|---------+--------+------------+-------+------+------+------|
| 100MHz | 66MHz | 1.5x | 1 & 2 | 1 & | 1 & | 1 & |
| | | | | 2 | 2 | 2 |
|---------+--------+------------+-------+------+------+------|
| 120MHz | 60MHz | 2x | 1 & 2 | 1 & | 1 & | 2 & |
| | | | | 2 | 2 | 3 |
|---------+--------+------------+-------+------+------+------|
| 133MHz | 66MHz | 2x | 1 & 2 | 1 & | 1 & | 1 & |
| | | | | 2 | 2 | 2 |
|---------+--------+------------+-------+------+------+------|
| 150MHz | 60MHz | 2.5x | 1 & 2 | 1 & | 1 & | 2 & |
| | | | | 2 | 2 | 3 |
|---------+--------+------------+-------+------+------+------|
| 166MHz | 66MHz | 2.5x | 1 & 2 | 1 & | 1 & | 1 & |
| | | | | 2 | 2 | 2 |
|---------+--------+------------+-------+------+------+------|
| 166MHz | 66MHz | 2.5x | 2 & 3 | 2 & | 2 & | 1 & |
| (P55C) | | | | 3 | 3 | 2 |
|---------+--------+------------+-------+------+------+------|
| 200MHz | 66MHz | 3x | 1 & 2 | 1 & | 1 & | 1 & |
| | | | | 2 | 2 | 2 |
|---------+--------+------------+-------+------+------+------|
| 200MHz | 66MHz | 3x | 2 & 3 | 2 & | 2 & | 1 & |
| (P55C) | | | | 3 | 3 | 2 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION |
|------------------------------------------------------------|
| Voltage | V core | JP13 | JP21 |
|-----------+--------+-------------------+-------------------|
| | 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 |
|---+-------+--------+-------------------+-------------------|
| | 3.52v | 2.5v | Pins 3 & 4 closed | Pins 1 & 2 closed |
|---+-------+--------+-------------------+-------------------|
| » | 3.52v | 2.8v | Pins 3 & 4 closed | Pins 3 & 4 closed |
|---+-------+--------+-------------------+-------------------|
| | 3.52v | 2.9v | Pins 3 & 4 closed | Pins 5 & 6 closed |
+------------------------------------------------------------+