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# GEMLIGHT COMPUTER. LTD.
GMB-P57IAA (VER. 1.10)
Processor CX 6X86/CX 6X86L/CX 6X86MX/AM K5/AM
K6/Pentium/Pentium MMX
Processor Speed 90/100/120/133/150/166/200/233/266MHz
Chip Set Intel 430TX
Video Chip Set ATI
Maximum Onboard 256MB (EDO & SDRAM supported)
Memory
Maximum Video 4MB
Memory
Cache 256/512KB
BIOS Award
Dimensions 304mm x 245mm
I/O Options 32-bit PCI slots (3), floppy drive interface,
game/MIDI port, IDE interfaces (2), parallel
port, PS/2 mouse port, serial ports (2), VGA
port, USB connectors (2), ATX power
connector, microphone in, line in, speaker
out, AMC/VFC connector, TV out connector,
audio in - CD-ROM (2)
NPU Options None
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|---------------+-----------+---------------------+----------|
| ATX power | ATX | Reset switch | J2/pins |
| connector | | | 9 & 10 |
|---------------+-----------+---------------------+----------|
| Game/MIDI | CN1 | Power LED & keylock | J2/pins |
| port | | | 11 - 15 |
|---------------+-----------+---------------------+----------|
| Microphone in | CN2 | Speaker | J2/pins |
| | | | 17 - 20 |
|---------------+-----------+---------------------+----------|
| Line in | CN3 | TV out connector | J4 |
|---------------+-----------+---------------------+----------|
| Speaker out | CN4 | AMC/VFC connector | J5 |
|---------------+-----------+---------------------+----------|
| VGA port | CN5 | Audio in - CD-ROM | J7 |
| | | (Sony) | |
|---------------+-----------+---------------------+----------|
| Serial port 1 | CN6 | Audio in - CD-ROM | J8 |
| | | (Panasonic/Mitsumi) | |
|---------------+-----------+---------------------+----------|
| Parallel port | CN7 | IDE interface 1 | J11 |
|---------------+-----------+---------------------+----------|
| USB connector | CN8 | IDE interface 2 | J10 |
| 1 | | | |
|---------------+-----------+---------------------+----------|
| USB connector | CN9 | Floppy drive | J14 |
| 2 | | interface | |
|---------------+-----------+---------------------+----------|
| PS/2 mouse | CN10 | Serial port 2 | J20 |
| port | | | |
|---------------+-----------+---------------------+----------|
| IDE interface | J2/pins 1 | Internal modem | JP1 |
| LED | & 2 | ring-in connector | |
|---------------+-----------+---------------------+----------|
| Power switch | J2/pins 5 | IR connector | JP6 |
| | & 6 | | |
|---------------+-----------+---------------------+----------|
| Green PC | J2/pins 7 | 32-bit PCI slots | PCI – |
| connector | & 8 | | PC3 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|---------------------------------------+-------+------------|
| | Flash BIOS voltage select 12v | JP4 | Pins 1 & 2 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| | Flash BIOS voltage select 5v | JP4 | Pins 2 & 3 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| | VGA IRQ enabled | JP10 | Pins 2 & 3 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| | VGA IRQ disabled | JP10 | Pins 1 & 2 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| | On board video enabled | JP11 | Pins 2 & 3 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| | On board video disabled | JP11 | Pins 1 & 2 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| » | Factory configured - do not alter | JP15 | Open |
|---+-----------------------------------+-------+------------|
| | Ring in select COM1 | JP21 | Pins 2 & 3 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| | Ring in select COM2 | JP21 | Pins 1 & 2 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| | On board audio enabled | JP22 | Closed |
|---+-----------------------------------+-------+------------|
| | On board audio disabled | JP22 | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 8MB | (2) 1M x 32 | None |
|------------------+--------------------+--------------------|
| 16MB | (2) 2M x 32 | None |
|------------------+--------------------+--------------------|
| 16MB | (2) 1M x 32 | (2) 1M x 32 |
|------------------+--------------------+--------------------|
| 24MB | (2) 2M x 32 | (2) 1M x 32 |
|------------------+--------------------+--------------------|
| 32MB | (2) 4M x 32 | None |
|------------------+--------------------+--------------------|
| 32MB | (2) 2M x 32 | (2) 2M x 32 |
|------------------+--------------------+--------------------|
| 40MB | (2) 4M x 32 | (2) 1M x 32 |
|------------------+--------------------+--------------------|
| 48MB | (2) 4M x 32 | (2) 2M x 32 |
|------------------+--------------------+--------------------|
| 64MB | (2) 8M x 32 | None |
|------------------+--------------------+--------------------|
| 64MB | (2) 4M x 32 | (2) 4M x 32 |
|------------------+--------------------+--------------------|
| 72MB | (2) 8M x 32 | (2) 1M x 32 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 80MB | (2) 8M x 32 | (2) 2M x 32 |
|------------------+--------------------+--------------------|
| 96MB | (2) 8M x 32 | (2) 4M x 32 |
|------------------+--------------------+--------------------|
| 128MB | (2) 8M x 32 | (2) 8M x 32 |
|------------------+--------------------+--------------------|
| 128MB | (2) 16M x 32 | None |
|------------------+--------------------+--------------------|
| 136MB | (2) 16M x 32 | (2) 1M x 32 |
|------------------+--------------------+--------------------|
| 144MB | (2) 16M x 32 | (2) 2M x 32 |
|------------------+--------------------+--------------------|
| 160MB | (2) 16M x 32 | (2) 4M x 32 |
|------------------+--------------------+--------------------|
| 192MB | (2) 16M x 32 | (2) 8M x 32 |
|------------------+--------------------+--------------------|
| 256MB | (2) 16M x 32 | (2) 16M x 32 |
|------------------------------------------------------------|
| Note: Board accepts EDO memory. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIMM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 8MB | (1) 1M x 64 | None |
|------------------+--------------------+--------------------|
| 16MB | (1) 2M x 64 | None |
|------------------+--------------------+--------------------|
| 16MB | (1) 1M x 64 | (1) 1M x 64 |
|------------------+--------------------+--------------------|
| 24MB | (1) 2M x 64 | (1) 1M x 64 |
|------------------+--------------------+--------------------|
| 32MB | (1) 4M x 64 | None |
|------------------+--------------------+--------------------|
| 32MB | (1) 2M x 64 | (1) 2M x 64 |
|------------------+--------------------+--------------------|
| 40MB | (1) 4M x 64 | (1) 1M x 64 |
|------------------+--------------------+--------------------|
| 48MB | (1) 4M x 64 | (1) 2M x 64 |
|------------------+--------------------+--------------------|
| 64MB | (1) 8M x 64 | None |
|------------------+--------------------+--------------------|
| 64MB | (1) 4M x 64 | (1) 4M x 64 |
|------------------+--------------------+--------------------|
| 72MB | (1) 8M x 64 | (1) 1M x 64 |
|------------------+--------------------+--------------------|
| 80MB | (1) 8M x 64 | (1) 2M x 64 |
|------------------+--------------------+--------------------|
| 96MB | (1) 8M x 64 | (1) 4M x 64 |
|------------------+--------------------+--------------------|
| 128MB | (1) 8M x 64 | (1) 8M x 64 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | TAG |
|------------------+--------------------+--------------------|
| 256KB | (2) 32K x 32 | Unidentified |
|------------------+--------------------+--------------------|
| 512KB | (2) 64K x 32 | Unidentified |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VIDEO MEMORY CONFIGURATION |
|------------------------------------------------------------|
| Note: Board accepts 1MB/2MB/4MB video memory. The |
| configuration is unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CX 6X86) |
|------------------------------------------------------------|
|CPU speed|Clock speed|Multiplier|SW1/1 |SW1/2 |SW1/3 |SW1/4 |
|---------+-----------+----------+------+------+------+------|
| 133MHz | 55MHz | 2x | Off | On | On | Off |
|---------+-----------+----------+------+------+------+------|
| 150MHz | 60MHz | 2x | Off | On | On | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CX 6X86, CON’T) |
|------------------------------------------------------------|
|CPU speed|Clock speed|Multiplier|SW1/5 |SW1/6 |SW1/7 |SW1/8 |
|---------+-----------+----------+------+------+------+------|
| 133MHz | 55MHz | 2x | Off | On | On | Off |
|---------+-----------+----------+------+------+------+------|
| 150MHz | 60MHz | 2x | Off | On | Off | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CX 6X86L) |
|------------------------------------------------------------|
|CPU speed|Clock speed|Multiplier|SW1/1 |SW1/2 |SW1/3 |SW1/4 |
|---------+-----------+----------+------+------+------+------|
| 133MHz | 55MHz | 2x | Off | On | On | Off |
|---------+-----------+----------+------+------+------+------|
| 150MHz | 60MHz | 2x | Off | On | On | Off |
|---------+-----------+----------+------+------+------+------|
| 166MHz | 66Mhz | 2x | Off | On | On | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CX 6X86L, CON’T) |
|------------------------------------------------------------|
|CPU speed|Clock speed|Multiplier|SW1/5 |SW1/6 |SW1/7 |SW1/8 |
|---------+-----------+----------+------+------+------+------|
| 133MHz | 55MHz | 2x | Off | On | On | Off |
|---------+-----------+----------+------+------+------+------|
| 150MHz | 60MHz | 2x | Off | On | Off | Off |
|---------+-----------+----------+------+------+------+------|
| 166MHz | 66MHz | 2x | Off | Off | Off | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CX 6X86MX) |
|------------------------------------------------------------|
|CPU speed|Clock speed|Multiplier|SW1/1 |SW1/2 |SW1/3 |SW1/4 |
|---------+-----------+----------+------+------+------+------|
| 166MHz | 66MHz | 2x | Off | On | On | Off |
|---------+-----------+----------+------+------+------+------|
| 200MHz | 75MHz | 2x | Off | On | On | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CX 6X86MX, CON’T) |
|------------------------------------------------------------|
|CPU speed|Clock speed|Multiplier|SW1/5 |SW1/6 |SW1/7 |SW1/8 |
|---------+-----------+----------+------+------+------+------|
| 166MHz | 66MHz | 2x | Off | Off | Off | Off |
|---------+-----------+----------+------+------+------+------|
| 200MHz | 75MHz | 2x | Off | Off | On | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (AM K5) |
|------------------------------------------------------------|
|CPU speed|Clock speed|Multiplier|SW1/1 |SW1/2 |SW1/3 |SW1/4 |
|---------+-----------+----------+------+------+------+------|
| 90MHz | 60MHz | 1.5x | Off | On | Off | Off |
|---------+-----------+----------+------+------+------+------|
| 100MHz | 66MHz | 1.5x | Off | On | Off | Off |
|---------+-----------+----------+------+------+------+------|
| 120MHz | 60MHz | 1.5x | Off | On | Off | Off |
|---------+-----------+----------+------+------+------+------|
| 133MHz | 66MHz | 2x | Off | On | On | Off |
|---------+-----------+----------+------+------+------+------|
| 150MHz | 60MHz | 1.5x | Off | On | Off | Off |
|---------+-----------+----------+------+------+------+------|
| 166MHz | 66MHz | 2.5x | Off | On | On | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (AM K5, CON’T) |
|------------------------------------------------------------|
|CPU speed|Clock speed|Multiplier|SW1/5 |SW1/6 |SW1/7 |SW1/8 |
|---------+-----------+----------+------+------+------+------|
| 90MHz | 60MHz | 1.5x | Off | On | Off | Off |
|---------+-----------+----------+------+------+------+------|
| 100MHz | 66MHz | 1.5x | Off | Off | Off | Off |
|---------+-----------+----------+------+------+------+------|
| 120MHz | 60MHz | 1.5x | Off | On | Off | Off |
|---------+-----------+----------+------+------+------+------|
| 133MHz | 66MHz | 2x | Off | Off | Off | Off |
|---------+-----------+----------+------+------+------+------|
| 150MHz | 60MHz | 1.5x | Off | Off | Off | Off |
|---------+-----------+----------+------+------+------+------|
| 166MHz | 66MHz | 2.5x | Off | Off | Off | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (AM K6) |
|------------------------------------------------------------|
|CPU speed|Clock speed|Multiplier|SW1/1 |SW1/2 |SW1/3 |SW1/4 |
|---------+-----------+----------+------+------+------+------|
| 166MHz | 66MHz | 2.5x | Off | On | On | On |
|---------+-----------+----------+------+------+------+------|
| 200MHz | 66MHz | 3x | Off | On | Off | On |
|---------+-----------+----------+------+------+------+------|
| 233MHz | 66MHz | 3.5x | Off | On | Off | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (AM K6, CON’T) |
|------------------------------------------------------------|
|CPU speed|Clock speed|Multiplier|SW1/5 |SW1/6 |SW1/7 |SW1/8 |
|---------+-----------+----------+------+------+------+------|
| 166MHz | 66MHz | 2.5x | Off | Off | Off | Off |
|---------+-----------+----------+------+------+------+------|
| 200MHz | 66MHz | 3x | Off | Off | Off | Off |
|---------+-----------+----------+------+------+------+------|
| 233MHz | 66MHz | 3.5x | Off | Off | Off | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (INTEL) |
|------------------------------------------------------------|
|CPU speed|Clock speed|Multiplier|SW1/1 |SW1/2 |SW1/3 |SW1/4 |
|---------+-----------+----------+------+------+------+------|
| 90MHz | 60MHz | 1.5x | Off | On | Off | Off |
|---------+-----------+----------+------+------+------+------|
| 100MHz | 66MHz | 1.5x | Off | On | Off | Off |
|---------+-----------+----------+------+------+------+------|
| 120MHz | 60MHz | 2x | Off | On | On | Off |
|---------+-----------+----------+------+------+------+------|
| 133MHz | 66MHz | 2x | Off | On | On | Off |
|---------+-----------+----------+------+------+------+------|
| 150MHz | 60MHz | 2.5x | Off | On | On | On |
|---------+-----------+----------+------+------+------+------|
| 166MHz | 66MHz | 2.5x | Off | On | On | On |
|---------+-----------+----------+------+------+------+------|
| 200MHz | 66MHz | 3x | Off | On | Off | On |
|---------+-----------+----------+------+------+------+------|
| 233MHz | 66MHz | 3.5x | Off | On | Off | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (INTEL, CON’T) |
|------------------------------------------------------------|
|CPU speed|Clock speed|Multiplier|SW1/5 |SW1/6 |SW1/7 |SW1/8 |
|---------+-----------+----------+------+------+------+------|
| 90MHz | 60MHz | 1.5x | Off | On | Off | Off |
|---------+-----------+----------+------+------+------+------|
| 100MHz | 66MHz | 1.5x | Off | Off | Off | Off |
|---------+-----------+----------+------+------+------+------|
| 120MHz | 60MHz | 2x | Off | On | Off | Off |
|---------+-----------+----------+------+------+------+------|
| 133MHz | 66MHz | 2x | Off | Off | Off | Off |
|---------+-----------+----------+------+------+------+------|
| 150MHz | 60MHz | 2.5x | Off | On | Off | Off |
|---------+-----------+----------+------+------+------+------|
| 166MHz | 66MHz | 2.5x | Off | Off | Off | Off |
|---------+-----------+----------+------+------+------+------|
| 200MHz | 66MHz | 3x | Off | Off | Off | Off |
|---------+-----------+----------+------+------+------+------|
| 233MHz | 66MHz | 3.5x | Off | Off | Off | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION (SINGLE) |
|------------------------------------------------------------|
| Voltage | JP18 | JP19 |
|---------------+-----------+--------------------------------|
| 3.3v | Open | 1 & 2, 5 & 6, 7 & 8 |
|---------------+-----------+--------------------------------|
| 3.5v | Open | 1 & 2, 3 & 4, 5 & 6, 7 & 8 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION (DUAL) |
|------------------------------------------------------------|
| Voltage | V core | JP18 | JP19 |
|--------------+-----------+----------------+----------------|
| 3.3v | 2.8v | 1 & 3, 2 & 4 | 7 & 8 |
|--------------+-----------+----------------+----------------|
| 3.3v | 2.9v | 1 & 3, 2 & 4 | 1 & 2, 7 & 8 |
|--------------+-----------+----------------+----------------|
| 3.3v | 3.2v | 1 & 3, 2 & 4 | 5 & 6, 7 & 8 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+