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# GIGA-BYTE TECHNOLOGY CO., LTD.
GA-6BXC (REV. 1.0)
Device Type Mainboard
Processor Pentium II
Processor Speed 233/266/300/333/350/366/400/450/500/550MHz
Chip Set Intel 440BX
Video Chip Set None
Maximum Onboard 768MB (SDRAM supported)
Memory
Maximum Video None
Memory
Cache 256/512KB (located on Pentium II CPU)
BIOS Award
Dimensions 305mm x 244mm
I/O Options 32-bit PCI slots (4), floppy drive interface,
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, SB-link connector,
wake on LAN connector
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------+----------+------------------+-----------|
| AGP slot | AGP | USB connector 2 | CN5 |
|------------------+----------+------------------+-----------|
| ATX power | ATX | PS/2 mouse port | CN6 |
| connector | | | |
|------------------+----------+------------------+-----------|
| Speaker | C1 | IDE interface 2 | CN7 |
|------------------+----------+------------------+-----------|
| Reset switch | C2 | IDE interface 1 | CN8 |
|------------------+----------+------------------+-----------|
| Power LED | C3 | Floppy drive | CN9 |
| | | interface | |
|------------------+----------+------------------+-----------|
| IDE interface | C4 | Wake on LAN | JP7 |
| LED | | connector | |
|------------------+----------+------------------+-----------|
| IR connector | C5 | SB-link | JP8 |
| | | connector | |
|------------------+----------+------------------+-----------|
| Green PC | C6 | Green PC LED | JP9/pins |
| connector | | | 1 & 12 |
|------------------+----------+------------------+-----------|
| Soft off power | C7 | Reset switch | JP9/pins |
| supply | | | 3 & 4 |
|------------------+----------+------------------+-----------|
| Green PC LED | C8 | Speaker | JP9/pins |
| | | | 5 - 8 |
|------------------+----------+------------------+-----------|
| CPU fan power | C9 | IDE interface | JP9/pins |
| | | LED | 9 & 20 |
|------------------+----------+------------------+-----------|
| Parallel port | CN1 | Green PC | JP9/pins |
| | | connector | 11 & 22 |
|------------------+----------+------------------+-----------|
| Serial port 1 | CN2 | Soft off power | JP9/pins |
| | | supply | 15 & 16 |
|------------------+----------+------------------+-----------|
| Serial port 2 | CN3 | Power LED | JP9/pins |
| | | | 17 - 19 |
|------------------+----------+------------------+-----------|
| USB connector 1 | CN4 | 32-bit PCI slots | PC1 – PC4 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|---------------------------------------+-------+------------|
| | ATX power control select soft off | J15 | Open |
|---+-----------------------------------+-------+------------|
| | ATX power control select soft | J15 | Closed |
| | off/full on | | |
|---+-----------------------------------+-------+------------|
| | Keyboard power on enabled | JP1 | Pins 1 & 2 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| | Keyboard power on disabled | JP1 | Pins 2 & 3 |
| | | | 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 |
|------------+---------------+---------------+---------------|
| 24MB | (1) 1M x 64 | (1) 1M x 64 | (1) 1M x 64 |
|------------+---------------+---------------+---------------|
| 32MB | (1) 4M x 64 | None | 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 |
|------------+---------------+---------------+---------------|
| 72MB | (1) 4M x 64 | (1) 4M x 64 | (1) 1M x 64 |
|------------+---------------+---------------+---------------|
| 80MB | (1) 8M x 64 | (1) 1M x 64 | (1) 1M x 64 |
|------------+---------------+---------------+---------------|
| 80MB | (1) 8M x 64 | (1) 2M x 64 | None |
|------------+---------------+---------------+---------------|
| 80MB | (1) 4M x 64 | (1) 4M x 64 | (1) 2M x 64 |
|------------+---------------+---------------+---------------|
| 88MB | (1) 8M x 64 | (1) 2M x 64 | (1) 1M x 64 |
|------------+---------------+---------------+---------------|
| 96MB | (1) 8M x 64 | (1) 2M x 64 | (1) 2M x 64 |
|------------+---------------+---------------+---------------|
| 96MB | (1) 8M x 64 | (1) 4M x 64 | None |
|------------+---------------+---------------+---------------|
| 96MB | (1) 4M x 64 | (1) 4M x 64 | (1) 4M x 64 |
|------------+---------------+---------------+---------------|
| 104MB | (1) 8M x 64 | (1) 4M x 64 | (1) 1M x 64 |
|------------+---------------+---------------+---------------|
| 112MB | (1) 8M x 64 | (1) 4M x 64 | (1) 2M x 64 |
|------------+---------------+---------------+---------------|
| 128MB | (1) 16M x 64 | None | 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 |
|------------+---------------+---------------+---------------|
| 160MB | (1) 16M x 64 | (1) 4M x 64 | None |
|------------+---------------+---------------+---------------|
| 160MB | (1) 8M x 64 | (1) 8M x 64 | (1) 4M x 64 |
|------------+---------------+---------------+---------------|
| 168MB | (1) 16M x 64 | (1) 4M x 64 | (1) 1M x 64 |
|------------+---------------+---------------+---------------|
| 176MB | (1) 16M x 64 | (1) 4M x 64 | (1) 2M x 64 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIMM CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 |
|------------+---------------+---------------+---------------|
| 192MB | (1) 16M x 64 | (1) 4M x 64 | (1) 4M x 64 |
|------------+---------------+---------------+---------------|
| 192MB | (1) 16M x 64 | (1) 8M x 64 | None |
|------------+---------------+---------------+---------------|
| 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 |
|------------+---------------+---------------+---------------|
| 272MB | (1) 32M x 64 | (1) 2M x 64 | None |
|------------+---------------+---------------+---------------|
| 288MB | (1) 32M x 64 | (1) 2M x 64 | (1) 2M 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) 32M x 64 | (1) 8M x 64 | (1) 8M x 64 |
|------------+---------------+---------------+---------------|
| 384MB | (1) 16M x 64 | (1) 16M x 64 | (1) 16M x 64 |
|------------+---------------+---------------+---------------|
| 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 SDRAM memory. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Note: 256KB/512KB cache is located on the Pentium II CPU. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION |
|------------------------------------------------------------|
|CPU speed|Clock speed|Multiplier|SW1/1 |SW1/2 |SW1/3 |SW1/4 |
|---------+-----------+----------+------+------+------+------|
| 233MHz | 66MHz | 3.5x | On | Off | Off | On |
|---------+-----------+----------+------+------+------+------|
| 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 |
|---------+-----------+----------+------+------+------+------|
| 300MHz | 100MHz | 3x | Off | Off | Off | Off |
|---------+-----------+----------+------+------+------+------|
| 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 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CON’T) |
|------------------------------------------------------------|
|CPU speed|Clock speed|Multiplier|SW2/1 |SW2/2 |SW2/3 |SW2/4 |
|---------+-----------+----------+------+------+------+------|
| 233MHz | 66MHz | 3.5x | Off | Off | On | On |
|---------+-----------+----------+------+------+------+------|
| 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 |
|---------+-----------+----------+------+------+------+------|
| 300MHz | 100MHz | 3x | On | Off | On | On |
|---------+-----------+----------+------+------+------+------|
| 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 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MAINBOARD BUS SPEED SELECTION |
|------------------------------------------------------------|
| Speed | JP10 |
|----------------------------------+-------------------------|
| 100MHz turbo & other frequencies | Pins 1 & 2 closed |
|----------------------------------+-------------------------|
| 100MHz | Pins 2 & 3 closed |
+------------------------------------------------------------+