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# GIGA-BYTE TECHNOLOGY CO., LTD.
GA-6BXA (VER. 1.0)
Device Mainboard
Type
Processor Pentium II/Celeron
Processor 266/300/333/350/366/400/433/450/466/500/550/600/650MHz
Speed
Chip Set Intel 440BX
Maximum 768MB (EDO & SDRAM supported)
Onboard
Memory
Cache 0/128/256/512KB (located on the CPU)
BIOS Award
Dimensions 305mm x 190mm
I/O 32-bit PCI slots (5), floppy drive interface,
Options game/MIDI port, green PC connector, IDE interfaces
(2), parallel port, PS/2 mouse port, serial ports (2),
IR connector, USB connectors (2), ATX power connector,
AGP slot, line in, line out, microphone in, audio in -
CD-ROMs (2), SB-link connector, wake on LAN connector
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-----------------+----------+------------------+------------|
| AGP slot | AGP | CPU fan power | J2 |
|-----------------+----------+------------------+------------|
| ATX power | ATX | Chassis fan | J9 |
| connector | | power | |
|-----------------+----------+------------------+------------|
| Power fan power | C1 | Green PC LED | JP5/pins 1 |
| | | | & 12 |
|-----------------+----------+------------------+------------|
| Game/MIDI port | CN1 | Reset switch | JP5/pins 3 |
| | | | & 4 |
|-----------------+----------+------------------+------------|
| Microphone in | CN2 | Speaker | JP5/pins 5 |
| | | | - 8 |
|-----------------+----------+------------------+------------|
| Line in | CN3 | IDE interface | JP5/pins 9 |
| | | LED | & 20 |
|-----------------+----------+------------------+------------|
| Line out | CN4 | Green PC | JP5/pins |
| | | connector | 11 & 22 |
|-----------------+----------+------------------+------------|
| Serial port 1 | CN5 | Soft off power | JP5/pins |
| | | supply | 15 & 16 |
|-----------------+----------+------------------+------------|
| Audio in - | CN6 | Power LED | JP5/pins |
| CD-ROM | | | 17 - 19 |
|-----------------+----------+------------------+------------|
| Parallel port | CN7 | Audio in - | JP7 |
| | | CD-ROM | |
|-----------------+----------+------------------+------------|
| USB connector 1 | CN8 | STR LED | JP9 |
|-----------------+----------+------------------+------------|
| USB connector 2 | CN9 | Wake on LAN | JP10 |
| | | connector | |
|-----------------+----------+------------------+------------|
| PS/2 mouse port | CN10 | Case open | JP11 |
| | | connector | |
|-----------------+----------+------------------+------------|
| IDE interface 2 | CN11 | Wake on modem | JP12 |
| | | connector | |
|-----------------+----------+------------------+------------|
| IDE interface 1 | CN12 | Modem connector | JP20 |
|-----------------+----------+------------------+------------|
| Floppy drive | CN13 | SB-link | JP21 |
| interface | | connector | |
|-----------------+----------+------------------+------------|
| Serial port 2 | CN14 | 32-bit PCI slots | PC1 - PC5 |
|-----------------+----------+------------------+------------|
| IR connector | IR1 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|---------------------------------------+-------+------------|
| | ATX power supply select soft off | J12 | Open |
|---+-----------------------------------+-------+------------|
| | ATX power supply select full on | J12 | Closed |
|---+-----------------------------------+-------+------------|
| » | Keyboard power on disabled | JP1 | Pins 2 & 3 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| | Keyboard power on enabled | JP1 | Pins 1 & 2 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| » | System acceleration select 100MHz | JP4 | Pins 2 & 3 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| | System acceleration select turbo | JP4 | Pins 1 & 2 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| » | CMOS memory normal operation | JP13 | Pins 2 & 3 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| | CMOS memory clear | JP13 | Pins 1 & 2 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| | Suspend to RAM function enabled | JP14 | Open |
|---+-----------------------------------+-------+------------|
| | Suspend to RAM function disabled | JP14 | Closed |
|---+-----------------------------------+-------+------------|
| | PCI bus CLK select 33MHz | JP16 | Open |
|---+-----------------------------------+-------+------------|
| | PCI bus CLK select 44MHz | JP16 | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIMM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 |
|------------+---------------+---------------+---------------|
| 8MB | (1) 1M x 64 | None | None |
|------------+---------------+---------------+---------------|
| 16MB | (1) 2M x 64 | None | None |
|------------+---------------+---------------+---------------|
| 16MB | (1) 1M x 64 | (1) 1M x 64 | None |
|------------+---------------+---------------+---------------|
| 24MB | (1) 2M x 64 | (1) 1M x 64 | None |
|------------+---------------+---------------+---------------|
| 32MB | (1) 2M x 64 | (1) 1M x 64 | (1) 1M x 64 |
|------------+---------------+---------------+---------------|
| 32MB | (1) 2M x 64 | (1) 2M x 64 | None |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIMM CONFIGURATION (CON'T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 |
|------------+---------------+---------------+---------------|
| 40MB | (1) 4M x 64 | (1) 1M x 64 | None |
|------------+---------------+---------------+---------------|
| 40MB | (1) 2M x 64 | (1) 2M x 64 | (1) 1M x 64 |
|------------+---------------+---------------+---------------|
| 48MB | (1) 4M x 64 | (1) 1M x 64 | (1) 1M x 64 |
|------------+---------------+---------------+---------------|
| 48MB | (1) 4M x 64 | (1) 2M x 64 | None |
|------------+---------------+---------------+---------------|
| 48MB | (1) 2M x 64 | (1) 2M x 64 | (1) 2M x 64 |
|------------+---------------+---------------+---------------|
| 56MB | (1) 4M x 64 | (1) 2M x 64 | (1) 1M x 64 |
|------------+---------------+---------------+---------------|
| 64MB | (1) 8M x 64 | None | None |
|------------+---------------+---------------+---------------|
| 64MB | (1) 4M x 64 | (1) 2M x 64 | (1) 2M x 64 |
|------------+---------------+---------------+---------------|
| 64MB | (1) 4M x 64 | (1) 4M x 64 | None |
|------------+---------------+---------------+---------------|
| 72MB | (1) 8M x 64 | (1) 1M x 64 | None |
|------------+---------------+---------------+---------------|
| 96MB | (1) 8M x 64 | (1) 4M x 64 | None |
|------------+---------------+---------------+---------------|
| 128MB | (1) 8M x 64 | (1) 4M x 64 | (1) 4M x 64 |
|------------+---------------+---------------+---------------|
| 128MB | (1) 8M x 64 | (1) 8M x 64 | None |
|------------+---------------+---------------+---------------|
| 136MB | (1) 16M x 64 | (1) 1M x 64 | None |
|------------+---------------+---------------+---------------|
| 136MB | (1) 8M x 64 | (1) 8M x 64 | (1) 1M x 64 |
|------------+---------------+---------------+---------------|
| 144MB | (1) 16M x 64 | (1) 1M x 64 | (1) 1M x 64 |
|------------+---------------+---------------+---------------|
| 144MB | (1) 16M x 64 | (1) 2M x 64 | None |
|------------+---------------+---------------+---------------|
| 144MB | (1) 8M x 64 | (1) 8M x 64 | (1) 2M x 64 |
|------------+---------------+---------------+---------------|
| 152MB | (1) 16M x 64 | (1) 2M x 64 | (1) 1M x 64 |
|------------+---------------+---------------+---------------|
| 160MB | (1) 16M x 64 | (1) 2M x 64 | (1) 2M x 64 |
|------------+---------------+---------------+---------------|
| 192MB | (1) 16M x 64 | (1) 4M x 64 | (1) 4M x 64 |
|------------+---------------+---------------+---------------|
| 192MB | (1) 16M x 64 | (1) 8M x 64 | None |
|------------+---------------+---------------+---------------|
| 192MB | (1) 8M x 64 | (1) 8M x 64 | (1) 8M x 64 |
|------------+---------------+---------------+---------------|
| 200MB | (1) 16M x 64 | (1) 8M x 64 | (1) 1M x 64 |
|------------+---------------+---------------+---------------|
| 208MB | (1) 16M x 64 | (1) 8M x 64 | (1) 2M x 64 |
|------------+---------------+---------------+---------------|
| 224MB | (1) 16M x 64 | (1) 8M x 64 | (1) 4M x 64 |
|------------+---------------+---------------+---------------|
| 256MB | (1) 32M x 64 | None | None |
|------------+---------------+---------------+---------------|
| 256MB | (1) 16M x 64 | (1) 8M x 64 | (1) 8M x 64 |
|------------+---------------+---------------+---------------|
| 264MB | (1) 32M x 64 | (1) 1M x 64 | None |
|------------+---------------+---------------+---------------|
| 272MB | (1) 32M x 64 | (1) 1M x 64 | (1) 1M x 64 |
|------------+---------------+---------------+---------------|
| 288MB | (1) 32M x 64 | (1) 4M x 64 | None |
|------------+---------------+---------------+---------------|
| 320MB | (1) 32M x 64 | (1) 4M x 64 | (1) 4M x 64 |
|------------+---------------+---------------+---------------|
| 320MB | (1) 32M x 64 | (1) 8M x 64 | None |
|------------+---------------+---------------+---------------|
| 384MB | (1) 16M x 64 | (1) 16M x 64 | (1) 16M x 64 |
|------------+---------------+---------------+---------------|
| 512MB | (1) 32M x 64 | (1) 16M x 64 | (1) 16M x 64 |
|------------+---------------+---------------+---------------|
| 512MB | (1) 32M x 64 | (1) 32M x 64 | None |
|------------+---------------+---------------+---------------|
| 768MB | (1) 32M x 64 | (1) 32M x 64 | (1) 32M x 64 |
|------------------------------------------------------------|
| Note: Board accepts EDO & SDRAM memory. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Note: 256KB/512KB cache is located on the Pentium II CPU. |
| 128KB cache is located on the Celeron 300A & 333 CPU. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CELERON) |
|------------------------------------------------------------|
|CPU speed|Clock speed|Multiplier|SW1/1 |SW1/2 |SW1/3 |SW1/4 |
|---------+-----------+----------+------+------+------+------|
| 266MHz | 66MHz | 4x | On | Off | Off | On |
|---------+-----------+----------+------+------+------+------|
| 300MHz | 66MHz | 4.5x | On | Off | Off | On |
|---------+-----------+----------+------+------+------+------|
| 333MHz | 66MHz | 5x | On | Off | Off | On |
|---------+-----------+----------+------+------+------+------|
| 366MHz | 66MHz | 5.5x | On | Off | Off | On |
|---------+-----------+----------+------+------+------+------|
| 400MHz | 66MHz | 6x | On | Off | Off | On |
|---------+-----------+----------+------+------+------+------|
| 433MHz | 66MHz | 6.5x | On | Off | Off | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CELERON, CON'T) |
|------------------------------------------------------------|
|CPU speed|Clock speed|Multiplier|SW2/1 |SW2/2 |SW2/3 |SW2/4 |
|---------+-----------+----------+------+------+------+------|
| 266MHz | 66MHz | 4x | On | On | Off | On |
|---------+-----------+----------+------+------+------+------|
| 300MHz | 66MHz | 4.5x | Off | On | Off | On |
|---------+-----------+----------+------+------+------+------|
| 333MHz | 66MHz | 5x | On | Off | Off | On |
|---------+-----------+----------+------+------+------+------|
| 366MHz | 66MHz | 5.5x | Off | Off | Off | On |
|---------+-----------+----------+------+------+------+------|
| 400MHz | 66MHz | 6x | On | On | On | Off |
|---------+-----------+----------+------+------+------+------|
| 433MHz | 66MHz | 6.5x | Off | On | On | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (PENTIUM II) |
|------------------------------------------------------------|
|CPU speed|Clock speed|Multiplier|SW1/1 |SW1/2 |SW1/3 |SW1/4 |
|---------+-----------+----------+------+------+------+------|
| 266MHz | 66MHz | 4x | On | Off | Off | On |
|---------+-----------+----------+------+------+------+------|
| 300MHz | 66MHz | 4.5x | On | Off | Off | On |
|---------+-----------+----------+------+------+------+------|
| 333MHz | 66MHz | 5x | On | Off | Off | On |
|---------+-----------+----------+------+------+------+------|
| 366MHz | 66MHz | 5.5x | On | Off | Off | On |
|---------+-----------+----------+------+------+------+------|
| 400MHz | 66MHz | 6x | On | Off | Off | On |
|---------+-----------+----------+------+------+------+------|
| 433MHz | 66MHz | 6.5x | On | Off | Off | On |
|---------+-----------+----------+------+------+------+------|
| 350MHz | 100MHz | 3.5x | Off | Off | Off | Off |
|---------+-----------+----------+------+------+------+------|
| 400MHz | 100MHz | 4x | Off | Off | Off | Off |
|---------+-----------+----------+------+------+------+------|
| 450MHz | 100MHz | 4.5x | Off | Off | Off | Off |
|---------+-----------+----------+------+------+------+------|
| 500MHz | 100MHz | 5x | Off | Off | Off | Off |
|---------+-----------+----------+------+------+------+------|
| 550MHz | 100MHz | 5.5x | Off | Off | Off | Off |
|---------+-----------+----------+------+------+------+------|
| 600MHz | 100MHz | 6x | Off | Off | Off | Off |
|---------+-----------+----------+------+------+------+------|
| 650MHz | 100MHz | 6.5x | Off | Off | Off | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (PENTIUM II, CON'T) |
|------------------------------------------------------------|
|CPU speed|Clock speed|Multiplier|SW2/1 |SW2/2 |SW2/3 |SW2/4 |
|---------+-----------+----------+------+------+------+------|
| 266MHz | 66MHz | 4x | On | On | Off | On |
|---------+-----------+----------+------+------+------+------|
| 300MHz | 66MHz | 4.5x | Off | On | Off | On |
|---------+-----------+----------+------+------+------+------|
| 333MHz | 66MHz | 5x | On | Off | Off | On |
|---------+-----------+----------+------+------+------+------|
| 366MHz | 66MHz | 5.5x | Off | Off | Off | On |
|---------+-----------+----------+------+------+------+------|
| 400MHz | 66MHz | 6x | On | On | On | Off |
|---------+-----------+----------+------+------+------+------|
| 433MHz | 66MHz | 6.5x | Off | On | On | Off |
|---------+-----------+----------+------+------+------+------|
| 350MHz | 100MHz | 3.5x | Off | Off | On | On |
|---------+-----------+----------+------+------+------+------|
| 400MHz | 100MHz | 4x | On | On | Off | On |
|---------+-----------+----------+------+------+------+------|
| 450MHz | 100MHz | 4.5x | Off | On | Off | On |
|---------+-----------+----------+------+------+------+------|
| 500MHz | 100MHz | 5x | On | Off | Off | On |
|---------+-----------+----------+------+------+------+------|
| 550MHz | 100MHz | 5.5x | Off | Off | Off | On |
|---------+-----------+----------+------+------+------+------|
| 600MHz | 100MHz | 6x | On | On | On | Off |
|---------+-----------+----------+------+------+------+------|
| 650MHz | 100MHz | 6.5x | Off | On | On | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| ON BOARD SOUND SELECTION |
|------------------------------------------------------------|
| Setting | JP17 | JP18 | JP19 |
|----------+------------+------------+-----------------------|
| Enabled | Pins 1 & 2 | Pins 1 & 2 | Pins 1 & 2, 3 & 4 |
| | closed | closed | closed |
|----------+------------+------------+-----------------------|
| Disabled | Pins 2 & 3 | Pins 2 & 3 | Open |
| | closed | closed | |
+------------------------------------------------------------+