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# GEMLIGHT COMPUTER LTD.
GMB-P57SAX (VER. 1.20)
Device Type Mainboard
Processor CX 6X86/IBM 6X86/CX 6X86L/IBM 6X86L/CX
6X86MX/IBM 6X86MX/AM K5/AM K6/Pentium/Pentium
MMX
Processor Speed 90/100/120/133/150/166/200/233/266MHz
Chip Set SIS 5598
Maximum Onboard 384MB (EDO & SDRAM supported)
Memory
Cache 512KB
BIOS Award
I/O Options 32-bit PCI slots (4), CD-ROM interface (2),
floppy drive interface, game port, IDE
interfaces (2), parallel port, PS/2 mouse
port, serial ports (2), VGA feature
connector, VGA port, IR connector, USB
connectors (2), wavetable connector, ATX
power connector, microphone in, line in, line
out
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|---------------+-----------+---------------------+----------|
| ATX power | ATX | Reset switch | J1/pins |
| connector | | | 9 & 10 |
|---------------+-----------+---------------------+----------|
| PS/2 mouse | CN1 | Power LED & keylock | J1/pins |
| port | | | 11-15 |
|---------------+-----------+---------------------+----------|
| USB connector | CN2 | Speaker | J1/pins |
| 1 | | | 16-20 |
|---------------+-----------+---------------------+----------|
| USB connector | CN3 | Wavetable connector | J2 |
| 2 | | | |
|---------------+-----------+---------------------+----------|
| Serial port 1 | CN4 | Audio in - CD-ROM | J3 |
| | | (Panasonic/Mitsumi) | |
|---------------+-----------+---------------------+----------|
| VGA port | CN5 | Audio in - CD-ROM | J4 |
| | | (Sony) | |
|---------------+-----------+---------------------+----------|
| Parallel port | CN6 | Floppy drive | J5 |
| | | interface | |
|---------------+-----------+---------------------+----------|
| External | CN7 | IDE interface 1 | J6 |
| speaker | | | |
|---------------+-----------+---------------------+----------|
| Line in | CN8 | IDE interface 2 | J7 |
|---------------+-----------+---------------------+----------|
| Microphone in | CN9 | IR connector | J8 |
|---------------+-----------+---------------------+----------|
| Game port | CN10 | VGA feature | J10 |
| | | connector | |
|---------------+-----------+---------------------+----------|
| IDE interface | J1/pins 1 | Serial port 2 | J11 |
| LED | & 2 | | |
|---------------+-----------+---------------------+----------|
| Suspend LED | J1/pins 3 | Chassis fan power | J17 |
| | & 4 | | |
|---------------+-----------+---------------------+----------|
| Suspend | J1/pins 5 | Internal modem | JP11 |
| switch | & 6 | ring-in connector | |
|---------------+-----------+---------------------+----------|
| Power switch | J1/pins 7 | 32-bit PCI slots | PC1 - |
| | & 8 | | PC4 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|---------------------------------------+-------+------------|
| | Flash BIOS voltage select 12v | JP1 | Pins 1 & 2 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| | Flash BIOS voltage select 5v | JP1 | Pins 2 & 3 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| | Onboard audio enabled | JP3 | Closed |
|---+-----------------------------------+-------+------------|
| | Onboard audio disabled | JP3 | Open |
|---+-----------------------------------+-------+------------|
| » | Factory configured - do not alter | JP6 | Open |
|---+-----------------------------------+-------+------------|
| » | CMOS memory normal operation | JP8 | Pins 1 & 2 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| | CMOS memory clear | JP8 | Pins 2 & 3 |
| | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VGA SETTINGS |
|------------------------------------------------------------|
| Function | JP4 | JP5 |
|----------------------+------------------+------------------|
| Onboard VGA enabled | Pins 2 & 3 | Pins 1 & 2 |
| | closed | closed |
|----------------------+------------------+------------------|
| Onboard VGA disabled | Pins 1 & 2 | Pins 2 & 3 |
| | closed | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SIMM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 8MB | (2) 1MB x 36 | None |
|------------------+--------------------+--------------------|
| 16MB | (2) 1MB x 36 | (2) 1MB x 36 |
|------------------+--------------------+--------------------|
| 16MB | (2) 2MB x 36 | None |
|------------------+--------------------+--------------------|
| 24MB | (2) 2MB x 36 | (2) 1MB x 36 |
|------------------+--------------------+--------------------|
| 32MB | (2) 2MB x 36 | (2) 2MB x 36 |
|------------------+--------------------+--------------------|
| 32MB | (2) 4MB x 36 | None |
|------------------+--------------------+--------------------|
| 40MB | (2) 4MB x 36 | (2) 1MB x 36 |
|------------------+--------------------+--------------------|
| 48MB | (2) 4MB x 36 | (2) 2MB x 36 |
|------------------+--------------------+--------------------|
| 64MB | (2) 4MB x 36 | (2) 4MB x 36 |
|------------------+--------------------+--------------------|
| 64MB | (2) 8MB x 36 | None |
|------------------+--------------------+--------------------|
| 72MB | (2) 8MB x 36 | (2) 1MB x 36 |
|------------------+--------------------+--------------------|
| 80MB | (2) 8MB x 36 | (2) 2MB x 36 |
|------------------+--------------------+--------------------|
| 96MB | (2) 8MB x 36 | (2) 4MB x 36 |
|------------------+--------------------+--------------------|
| 128MB | (2) 8MB x 36 | (2) 8MB x 36 |
|------------------+--------------------+--------------------|
| 128MB | (2) 16MB x 36 | None |
|------------------+--------------------+--------------------|
| 136MB | (2) 16MB x 36 | (2) 1MB x 36 |
|------------------+--------------------+--------------------|
| 144MB | (2) 16MB x 36 | (2) 2MB x 36 |
|------------------+--------------------+--------------------|
| 160MB | (2) 16MB x 36 | (2) 4MB x 36 |
|------------------+--------------------+--------------------|
| 192MB | (2) 16MB x 36 | (2) 8MB x 36 |
|------------------+--------------------+--------------------|
| 256MB | (2) 16MB x 36 | (2) 16MB x 36 |
|------------------------------------------------------------|
| Note: Board accepts EDO memory. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIMM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 2 | Bank 3 |
|--------------+-----------------------+---------------------|
| 8MB | (1) 1MB x 64 | None |
|--------------+-----------------------+---------------------|
| 16MB | (1) 1MB x 64 | (1) 1MB x 64 |
|--------------+-----------------------+---------------------|
| 16MB | (1) 2MB x 64 | None |
|--------------+-----------------------+---------------------|
| 24MB | (1) 2MB x 64 | (1) 1MB x 64 |
|--------------+-----------------------+---------------------|
| 32MB | (1) 2MB x 64 | (1) 2MB x 64 |
|--------------+-----------------------+---------------------|
| 32MB | (1) 4MB x 64 | None |
|--------------+-----------------------+---------------------|
| 40MB | (1) 4MB x 64 | (1) 1MB x 64 |
|--------------+-----------------------+---------------------|
| 48MB | (1) 4MB x 64 | (1) 2MB x 64 |
|--------------+-----------------------+---------------------|
| 64MB | (1) 4MB x 64 | (1) 4MB x 64 |
|--------------+-----------------------+---------------------|
| 64MB | (1) 8MB x 64 | None |
|--------------+-----------------------+---------------------|
| 72MB | (1) 8MB x 64 | (1) 1MB x 64 |
|--------------+-----------------------+---------------------|
| 80MB | (1) 8MB x 64 | (1) 2MB x 64 |
|--------------+-----------------------+---------------------|
| 96MB | (1) 8MB x 64 | (1) 4MB x 64 |
|--------------+-----------------------+---------------------|
| 128MB | (1) 8MB x 64 | (1) 8MB x 64 |
|--------------+-----------------------+---------------------|
| 128MB | (1) 16MB x 64 | None |
|--------------+-----------------------+---------------------|
| 136MB | (1) 16MB x 64 | (1) 1MB x 64 |
|--------------+-----------------------+---------------------|
| 144MB | (1) 16MB x 64 | (1) 2MB x 64 |
|--------------+-----------------------+---------------------|
| 160MB | (1) 16MB x 64 | (1) 4MB x 64 |
|--------------+-----------------------+---------------------|
| 192MB | (1) 16MB x 64 | (1) 8MB x 64 |
|--------------+-----------------------+---------------------|
| 256MB | (1) 16MB x 64 | (1) 16MB x 64 |
|------------------------------------------------------------|
| Note: Board accepts EDO and SDRAM. Bank 2 cannot be used |
| in conjunction with SIMM banks. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CX 6X86) |
|------------------------------------------------------------|
|Speed |Clock |Multiplier|SW1/3|SW1/4|SW1/5|SW1/6|SW1/7|SW1/8|
| |speed | | | | | | | |
|------+------+----------+-----+-----+-----+-----+-----+-----|
|150MHz|60MHz | 2x | On | Off | Off | On | Off | Off |
|------+------+----------+-----+-----+-----+-----+-----+-----|
|166MHz|66MHz | 2x | On | Off | Off | Off | Off | Off |
|------+------+----------+-----+-----+-----+-----+-----+-----|
|200MHz|75MHz | 2x | On | Off | Off | Off | On | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (IBM 6X86) |
|------------------------------------------------------------|
|Speed |Clock |Multiplier|SW1/3|SW1/4|SW1/5|SW1/6|SW1/7|SW1/8|
| |speed | | | | | | | |
|------+------+----------+-----+-----+-----+-----+-----+-----|
|150MHz|60MHz | 2x | On | Off | Off | On | Off | Off |
|------+------+----------+-----+-----+-----+-----+-----+-----|
|166MHz|66MHz | 2x | On | Off | Off | Off | Off | Off |
|------+------+----------+-----+-----+-----+-----+-----+-----|
|200MHz|75MHz | 2x | On | Off | Off | Off | On | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CX 6X86L) |
|------------------------------------------------------------|
|Speed |Clock |Multiplier|SW1/3|SW1/4|SW1/5|SW1/6|SW1/7|SW1/8|
| |speed | | | | | | | |
|------+------+----------+-----+-----+-----+-----+-----+-----|
|150MHz|60MHz | 2x | On | Off | Off | On | Off | Off |
|------+------+----------+-----+-----+-----+-----+-----+-----|
|166MHz|66MHz | 2x | On | Off | Off | Off | Off | Off |
|------+------+----------+-----+-----+-----+-----+-----+-----|
|200MHz|75MHz | 2x | On | Off | Off | Off | On | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (IBM 6X86L) |
|------------------------------------------------------------|
|Speed |Clock |Multiplier|SW1/3|SW1/4|SW1/5|SW1/6|SW1/7|SW1/8|
| |speed | | | | | | | |
|------+------+----------+-----+-----+-----+-----+-----+-----|
|150MHz|60MHz | 2x | On | Off | Off | On | Off | Off |
|------+------+----------+-----+-----+-----+-----+-----+-----|
|166MHz|66MHz | 2x | On | Off | Off | Off | Off | Off |
|------+------+----------+-----+-----+-----+-----+-----+-----|
|200MHz|75MHz | 2x | On | Off | Off | Off | On | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CX 6X86MX) |
|------------------------------------------------------------|
|Speed |Clock |Multiplier|SW1/3|SW1/4|SW1/5|SW1/6|SW1/7|SW1/8|
| |speed | | | | | | | |
|------+------+----------+-----+-----+-----+-----+-----+-----|
|166MHz|60MHz | 2.5x | On | On | Off | On | Off | Off |
|------+------+----------+-----+-----+-----+-----+-----+-----|
|200MHz|75MHz | 2x | On | Off | Off | Off | On | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (IBM 6X86MX) |
|------------------------------------------------------------|
|Speed |Clock |Multiplier|SW1/3|SW1/4|SW1/5|SW1/6|SW1/7|SW1/8|
| |speed | | | | | | | |
|------+------+----------+-----+-----+-----+-----+-----+-----|
|166MHz|60MHz | 2.5x | On | On | Off | On | Off | Off |
|------+------+----------+-----+-----+-----+-----+-----+-----|
|200MHz|75MHz | 2x | On | Off | Off | Off | On | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (AM K5) |
|------------------------------------------------------------|
|Speed |Clock |Multiplier|SW1/3|SW1/4|SW1/5|SW1/6|SW1/7|SW1/8|
| |speed | | | | | | | |
|------+------+----------+-----+-----+-----+-----+-----+-----|
|120MHz|60MHz | 2x | On | Off | Off | On | Off | Off |
|------+------+----------+-----+-----+-----+-----+-----+-----|
|133MHz|66MHz | 2x | On | Off | Off | Off | Off | Off |
|------+------+----------+-----+-----+-----+-----+-----+-----|
|166MHz|66MHz | 2.5x | On | On | Off | Off | Off | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (AM K6) |
|------------------------------------------------------------|
|Speed |Clock |Multiplier|SW1/3|SW1/4|SW1/5|SW1/6|SW1/7|SW1/8|
| |speed | | | | | | | |
|------+------+----------+-----+-----+-----+-----+-----+-----|
|166MHz|66MHz | 2.5x | On | On | Off | Off | Off | Off |
|------+------+----------+-----+-----+-----+-----+-----+-----|
|200MHz|66MHz | 3x | Off | On | Off | Off | Off | Off |
|------+------+----------+-----+-----+-----+-----+-----+-----|
|233MHz|66MHz | 3.5x | Off | Off | Off | Off | Off | Off |
|------+------+----------+-----+-----+-----+-----+-----+-----|
|266MHz|66MHz | 4x | Off | Off | On | Off | Off | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (PENTIUM) |
|------------------------------------------------------------|
|Speed |Clock |Multiplier|SW1/3|SW1/4|SW1/5|SW1/6|SW1/7|SW1/8|
| |speed | | | | | | | |
|------+------+----------+-----+-----+-----+-----+-----+-----|
|90MHz |60MHz | 1.5x | Off | Off | Off | On | Off | Off |
|------+------+----------+-----+-----+-----+-----+-----+-----|
|100MHz|66MHz | 1.5x | Off | Off | Off | Off | Off | Off |
|------+------+----------+-----+-----+-----+-----+-----+-----|
|120MHz|60MHz | 2x | On | Off | Off | On | Off | Off |
|------+------+----------+-----+-----+-----+-----+-----+-----|
|133MHz|66MHz | 2x | On | Off | Off | Off | Off | Off |
|------+------+----------+-----+-----+-----+-----+-----+-----|
|150MHz|60MHz | 2.5x | On | On | Off | On | Off | Off |
|------+------+----------+-----+-----+-----+-----+-----+-----|
|166MHz|66MHz | 2.5x | On | On | Off | Off | Off | Off |
|------+------+----------+-----+-----+-----+-----+-----+-----|
|200MHz|66MHz | 3x | Off | On | Off | Off | Off | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (PENTIUM MMX) |
|------------------------------------------------------------|
|Speed |Clock |Multiplier|SW1/3|SW1/4|SW1/5|SW1/6|SW1/7|SW1/8|
| |speed | | | | | | | |
|------+------+----------+-----+-----+-----+-----+-----+-----|
|166MHz|66MHz | 2.5x | On | On | Off | Off | Off | Off |
|------+------+----------+-----+-----+-----+-----+-----+-----|
|200MHz|66MHz | 3x | Off | On | Off | Off | Off | Off |
|------+------+----------+-----+-----+-----+-----+-----+-----|
|233MHz|66MHz | 3.5x | Off | Off | Off | Off | Off | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION |
|------------------------------------------------------------|
| Voltage | SW1/1 | SW1/2 |
|-------------------------+-----------------+----------------|
| Auto detection | Off | Off |
|------------------------------------------------------------|
| Note: Using the auto detection mode, CPU voltage is |
| selected from within the BIOS. No alternative settings are |
| provided. |
+------------------------------------------------------------+