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# VEXTREC TECHNOLOGY, INC.
GMB-P55IPS (VER. 1.52)
Processor CX 6X86/CX 6X86L/AM K5/AM K6/Pentium/Pentium
MMX
Processor Speed 90/100/120/133/150/166/200/233MHz
Chip Set Intel 440HX
Video Chip Set None
Maximum Onboard 256MB (EDO supported)
Memory
Maximum Video None
Memory
Cache 256/512KB
BIOS Award
Dimensions 265mm 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 connector, USB connectors (2)
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| IR connector | J1 | Parallel port | J11 |
|-------------------+----------+------------------+----------|
| Power LED & | J2 | Serial port 2 | J12 |
| keylock | | | |
|-------------------+----------+------------------+----------|
| Speaker | J4 | Serial port 1 | J13 |
|-------------------+----------+------------------+----------|
| IDE interface LED | J5 | PS/2 mouse | J16 |
| | | interface | |
|-------------------+----------+------------------+----------|
| IDE interface 1 | J6 | PS/2 mouse port | J17 |
|-------------------+----------+------------------+----------|
| IDE interface 2 | J7 | Turbo LED | J19 |
|-------------------+----------+------------------+----------|
| Floppy drive | J8 | Green PC | JP8 |
| interface | | connector | |
|-------------------+----------+------------------+----------|
| USB connector 1 | J9 | Reset switch | JP11 |
|-------------------+----------+------------------+----------|
| USB connector 2 | J10 | 32-bit PCI slots | PC1 - |
| | | | PC4 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|-------------------------------------+-------+--------------|
| » | Factory configured - do not | J3 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | CMOS memory normal operation | JP13 | Open |
|---+---------------------------------+-------+--------------|
| | CMOS memory clear | JP13 | Closed |
|---+---------------------------------+-------+--------------|
| | Flash BIOS voltage select 12v | JP20 | Pins 1 & 2 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| | Flash BIOS voltage select 5v | JP20 | Pins 2 & 3 |
| | | | 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. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | TAG |
|----------+---------------+---------------+-----------------|
| 256KB | (2) 32K x 32 | None | (1) 8K x 8 |
|----------+---------------+---------------+-----------------|
| 512KB | (2) 32K x 32 | (2) 32K x 32 | (1) 16K/32K x 8 |
|----------+---------------+---------------+-----------------|
| 512KB | (2) 64K x 32 | None | (1) 16K/32K x 8 |
|------------------------------------------------------------|
| Note: The location of Banks 0 & 1 is unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CX 6X86) |
|------------------------------------------------------------|
| CPU | Clock | Multiplier | JP1 | JP2 | JP18 |
| speed | speed | | | | |
|----------+--------+------------+--------+------+-----------|
| 120MHz | 50MHz | 2x | Closed | Open | 1 & 2, 3 |
| | | | | | & 4 |
|----------+--------+------------+--------+------+-----------|
| 133MHz | 55MHz | 2x | Closed | Open | Open |
|----------+--------+------------+--------+------+-----------|
| 150MHz | 60MHz | 2x | Closed | Open | 3 & 4 |
|----------+--------+------------+--------+------+-----------|
| 166MHz | 66MHz | 2x | Closed | Open | 1 & 2 |
|----------+--------+------------+--------+------+-----------|
| 200MHz | 75MHz | 2x | Closed | Open | 5 & 6 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CX 6X86L) |
|------------------------------------------------------------|
| CPU | Clock | Multiplier | JP1 | JP2 | JP18 |
| speed | speed | | | | |
|----------+--------+------------+--------+------+-----------|
| 120MHz | 50MHz | 2x | Closed | Open | 1 & 2, 3 |
| | | | | | & 4 |
|----------+--------+------------+--------+------+-----------|
| 133MHz | 55MHz | 2x | Closed | Open | Open |
|----------+--------+------------+--------+------+-----------|
| 150MHz | 60MHz | 2x | Closed | Open | 3 & 4 |
|----------+--------+------------+--------+------+-----------|
| 166MHz | 66MHz | 2x | Closed | Open | 1 & 2 |
|----------+--------+------------+--------+------+-----------|
| 200MHz | 75MHz | 2x | Closed | Open | 5 & 6 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (AM K5) |
|------------------------------------------------------------|
| CPU | Clock | Multiplier | JP1 | JP2 | JP18 |
| speed | speed | | | | |
|---------+-------+------------+--------+--------+-----------|
| 75MHz | 50MHz | 1.5x | Open | Open | 1 & 2, 3 |
| | | | | | & 4 |
|---------+-------+------------+--------+--------+-----------|
| 90MHz | 60MHz | 1.5x | Open | Open | 3 & 4 |
|---------+-------+------------+--------+--------+-----------|
| 100MHz | 66MHz | 1.5x | Open | Open | 1 & 2 |
|---------+-------+------------+--------+--------+-----------|
| 120MHz | 60MHz | 1.5x | Open | Open | 3 & 4 |
|---------+-------+------------+--------+--------+-----------|
| 133MHz | 66MHz | 2x | Closed | Open | 1 & 2 |
|---------+-------+------------+--------+--------+-----------|
| 150MHz | 60MHz | 1.5x | Open | Open | 1 & 2 |
|---------+-------+------------+--------+--------+-----------|
| 166MHz | 66MHz | 2.5x | Closed | Closed | 1 & 2 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (AM K6) |
|------------------------------------------------------------|
| CPU | Clock | Multiplier | JP1 | JP2 | JP18 |
| speed | speed | | | | |
|---------+-----------+------------+--------+--------+-------|
| 166MHz | 66MHz | 2.5x | Closed | Closed | 1 & 2 |
|---------+-----------+------------+--------+--------+-------|
| 200MHz | 66MHz | 3x | Open | Closed | 1 & 2 |
|---------+-----------+------------+--------+--------+-------|
| 233MHz | 66MHz | 3.5x | Open | Open | 1 & 2 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (INTEL) |
|------------------------------------------------------------|
| CPU | Clock | Multiplier | JP1 | JP2 | JP18 |
| speed | speed | | | | |
|---------+-------+------------+--------+--------+-----------|
| 75MHz | 50MHz | 1.5x | Open | Open | 1 & 2, 3 |
| | | | | | & 4 |
|---------+-------+------------+--------+--------+-----------|
| 90MHz | 60MHz | 1.5x | Open | Open | 3 & 4 |
|---------+-------+------------+--------+--------+-----------|
| 100MHz | 66MHz | 1.5x | Open | Open | 1 & 2 |
|---------+-------+------------+--------+--------+-----------|
| 120MHz | 60MHz | 2x | Closed | Open | 3 & 4 |
|---------+-------+------------+--------+--------+-----------|
| 133MHz | 66MHz | 2x | Closed | Open | 1 & 2 |
|---------+-------+------------+--------+--------+-----------|
| 150MHz | 60MHz | 2.5x | Closed | Closed | 3 & 4 |
|---------+-------+------------+--------+--------+-----------|
| 166MHz | 66MHz | 2.5x | Closed | Closed | 1 & 2 |
|---------+-------+------------+--------+--------+-----------|
| 200MHz | 66MHz | 3x | Open | Closed | 1 & 2 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (INTEL MMX) |
|------------------------------------------------------------|
| CPU | Clock | Multiplier | JP1 | JP2 | JP18 |
| speed | speed | | | | |
|---------+-----------+------------+--------+--------+-------|
| 166MHz | 66MHz | 2.5x | Closed | Closed | 1 & 2 |
|---------+-----------+------------+--------+--------+-------|
| 200MHz | 66MHz | 3x | Open | Closed | 1 & 2 |
|---------+-----------+------------+--------+--------+-------|
| 233MHz | 66MHz | 3.5x | Open | Open | 1 & 2 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION (SINGLE) |
|------------------------------------------------------------|
| Voltage | JP9 | JP10 | JP12 | JP14 | JP16 |
|---------+--------+--------+------+------------------+------|
| 3.3v | Open | Closed | Open | 1 & 2, 3 & 4, 5 | Open |
| | | | | & 6, 7 & 8 | |
|---------+--------+--------+------+------------------+------|
| 3.5v | Closed | Open | Open | 1 & 2, 3 & 4, 5 | Open |
| | | | | & 6, 7 & 8 | |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION (DUAL) |
|------------------------------------------------------------|
| Voltage | V core | JP9 | JP10 | JP12 | JP14 | JP16 |
|---------+--------+-------+--------+--------+------+--------|
| 3.3v | 2.8v | Open | Closed | Closed | Open | Open |
|---------+--------+-------+--------+--------+------+--------|
| 3.3v | 2.9v | Open | Closed | Open | Open | Closed |
|---------+--------+-------+--------+--------+------+--------|
| 3.3v | 3.2v | Open | Closed | Open | Open | Open |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+