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# VEXTREC TECHNOLOGY, INC.
GMB-P56VPS (VER. 1.10)
Processor CX 6X86/AM K5/Pentium/Pentium MMX
Processor Speed 75/90/100/120/133/150/166/180/200MHz
Chip Set VIA
Video Chip Set None
Maximum Onboard 256MB (EDO supported)
Memory
Maximum Video None
Memory
Cache 256/512KB
BIOS AMI/Award
Dimensions 270mm x 220mm
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), IR connectors (2), USB connectors
(2)
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| PS/2 mouse port | CN1 | IR connector | J14 |
|-------------------+----------+------------------+----------|
| Reset switch | J1 | IR connector | J15 |
| | | (fast) | |
|-------------------+----------+------------------+----------|
| Turbo switch | J2 | Parallel port | J16 |
|-------------------+----------+------------------+----------|
| Turbo LED | J3 | Serial port 2 | J17 |
|-------------------+----------+------------------+----------|
| IDE interface LED | J4 | Serial port 1 | J18 |
|-------------------+----------+------------------+----------|
| Speaker | J5 | PS/2 mouse | J19 |
| | | interface | |
|-------------------+----------+------------------+----------|
| Power LED & | J6 | USB connector 2 | J21 |
| keylock | | | |
|-------------------+----------+------------------+----------|
| Floppy drive | J10 | USB connector 1 | J22 |
| interface | | | |
|-------------------+----------+------------------+----------|
| IDE interface 2 | J11 | 32-bit PCI slots | PC1 - |
| | | | PC4 |
|-------------------+----------+------------------+----------|
| IDE interface 1 | J12 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|-----------------------------------+-------+----------------|
| | Flash BIOS voltage select 12v | JP2 | Pins 2 & 3 |
| | | | closed |
|---+-------------------------------+-------+----------------|
| | Flash BIOS voltage select 5v | JP2 | Pins 1 & 2 |
| | | | closed |
|---+-------------------------------+-------+----------------|
| » | CMOS memory normal operation | JP6 | Pins 1 & 2 |
| | | | closed |
|---+-------------------------------+-------+----------------|
| | CMOS memory clear | JP6 | Pins 2 & 3 |
| | | | closed |
|---+-------------------------------+-------+----------------|
| » | Boost mode disabled | S5 | Open |
|---+-------------------------------+-------+----------------|
| | Boost mode disabled | S5 | 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) 1M x 36 | (2) 4M 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) 2M x 36 | (2) 8M x 36 |
|---------------+----------------------+---------------------|
| 96MB | (2) 8M x 36 | (2) 4M x 36 |
|---------------+----------------------+---------------------|
| 128MB | (2) 16M x 36 | None |
|---------------+----------------------+---------------------|
| 128MB | (2) 8M x 36 | (2) 8M x 36 |
|---------------+----------------------+---------------------|
| 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 | Bank 1 | TAG |
|--------+---------------+--------------+--------------------|
| 256KB | (2) 32K x 32 | None | (1) 8K/16K/32K x 8 |
|--------+---------------+--------------+--------------------|
| 512KB | (2) 32K x 32 | (2) 32K x 32 | (1) 16K/32K x 8 |
|------------------------------------------------------------|
| Note: The location of banks 0 & 1 are unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CX 6X86) |
|------------------------------------------------------------|
| CPU | Clock |Multiplier| JP7 | JP8 | S3 | S4 | S5 |
| speed | speed | | | | | | |
|-------+--------+----------+-----+-----+------+------+------|
|120MHz | 50MHz | 2x |1 & 2|2 & 3|Closed|Closed| Open |
|-------+--------+----------+-----+-----+------+------+------|
|133MHz | 55MHz | 2x |1 & 2|2 & 3| Open | Open | Open |
|-------+--------+----------+-----+-----+------+------+------|
|150MHz | 60MHz | 2x |1 & 2|2 & 3|Closed| Open | Open |
|-------+--------+----------+-----+-----+------+------+------|
|166MHz | 66MHz | 3x |1 & 2|2 & 3| Open |Closed| Open |
|-------+--------+----------+-----+-----+------+------+------|
|200MHz | 66MHz | 3x |1 & 2|2 & 3| Open | Open |Closed|
|------------------------------------------------------------|
|Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (AM K5) |
|------------------------------------------------------------|
| CPU | Clock |Multiplier| JP7 | JP8 | S3 | S4 | S5 |
| speed | speed | | | | | | |
|-------+----------+----------+-----+-----+------+------+----|
| 75MHz | 50MHz | 1.5x |1 & 2|1 & 2|Closed|Closed|Open|
|-------+----------+----------+-----+-----+------+------+----|
| 90MHz | 60MHz | 1.5x |1 & 2|1 & 2|Closed| Open |Open|
|-------+----------+----------+-----+-----+------+------+----|
|100MHz | 66MHz | 1.5x |1 & 2|1 & 2| Open |Closed|Open|
|-------+----------+----------+-----+-----+------+------+----|
|120MHz | 60MHz | 1.5x |1 & 2|1 & 2|Closed| Open |Open|
|-------+----------+----------+-----+-----+------+------+----|
|133MHz | 66MHz | 2x |1 & 2|1 & 2| Open |Closed|Open|
|-------+----------+----------+-----+-----+------+------+----|
|150MHz | 66MHz | 1.5x |1 & 2|2 & 3|Closed| Open |Open|
|-------+----------+----------+-----+-----+------+------+----|
|166MHz | 66MHz | 2x |1 & 2|2 & 3| Open |Closed|Open|
|------------------------------------------------------------|
|Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (INTEL) |
|------------------------------------------------------------|
| CPU | Clock |Multiplier| JP7 | JP8 | S3 | S4 | S5 |
| speed | speed | | | | | | |
|-------+----------+----------+-----+-----+------+------+----|
| 75MHz | 50MHz | 1.5x |1 & 2|1 & 2|Closed|Closed|Open|
|-------+----------+----------+-----+-----+------+------+----|
| 90MHz | 60MHz | 1.5x |1 & 2|1 & 2|Closed| Open |Open|
|-------+----------+----------+-----+-----+------+------+----|
|100MHz | 66MHz | 1.5x |1 & 2|1 & 2| Open |Closed|Open|
|-------+----------+----------+-----+-----+------+------+----|
|120MHz | 60MHz | 2x |1 & 2|2 & 3|Closed| Open |Open|
|-------+----------+----------+-----+-----+------+------+----|
|133MHz | 66MHz | 2x |1 & 2|2 & 3| Open |Closed|Open|
|-------+----------+----------+-----+-----+------+------+----|
|150MHz | 60MHz | 2.5x |2 & 3|2 & 3|Closed| Open |Open|
|-------+----------+----------+-----+-----+------+------+----|
|166MHz | 66MHz | 2.5x |2 & 3|2 & 3| Open |Closed|Open|
|-------+----------+----------+-----+-----+------+------+----|
|180MHz | 60MHz | 3x |2 & 3|1 & 2|Closed| Open |Open|
|-------+----------+----------+-----+-----+------+------+----|
|200MHz | 66MHz | 3x |2 & 3|1 & 2| Open |Closed|Open|
|------------------------------------------------------------|
|Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (INTEL MMX) |
|------------------------------------------------------------|
|CPU speed| Clock |Multiplier| JP7 | JP8 | S3 | S4 | S5 |
| | speed | | | | | | |
|---------+----------+----------+-----+-----+----+------+----|
| 166MHz | 66MHz | 2.5x |2 & 3|2 & 3|Open|Closed|Open|
|---------+----------+----------+-----+-----+----+------+----|
| 200MHz | 66MHz | 3x |2 & 3|1 & 2|Open|Closed|Open|
|------------------------------------------------------------|
|Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION (SINGLE) |
|------------------------------------------------------------|
| Voltage | JP1 | S0 | S1 | S2 |
|----------------+----------+----------+----------+----------|
| 3.4v | Closed | Closed | Closed | Closed |
|----------------+----------+----------+----------+----------|
| 3.5v | Open | Closed | Closed | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION (DUAL) |
|------------------------------------------------------------|
| V I/O | V core | JP1 | S0 | S1 | S2 |
|----------+----------+----------+---------+--------+--------|
| 3.4v | 2.9v | Closed | Open | Open | Open |
+------------------------------------------------------------+