GMB-P56IAX (VER. 1.02) Motherboard Settings and Configuration

Device Type	Mainboard
Processor	CX 6X86/AM K5/Pentium/Pentium MMX
Processor Speed	75/90/100/120/133/150/166/200MHz
Chip Set	Intel 430VX
Maximum Onboard Memory	128MB (EDO & SDRAM supported)
Cache	256/512KB
BIOS	AMI/Award
I/O Options	32-bit PCI slots (4), floppy drive interface, IDE interface (2), parallel port, PS/2 mouse port, serial ports (2), cache slot, IR connector, USB connector (2)
Dimensions	305mm x 210mm

CONNECTIONS
Purpose	Location	Purpose	Location
ATX power supply	ATX	IR connector	J10
Reset switch	J1	USB connector 1	J11
Green PC connector	J2	USB connector 2	J12
Suspend LED	J3	Serial port 2	J14
Speaker	J4	Parallel port	J15
IDE interface LED	J5	PS/2 mouse port	J16
Power LED & keylock	J6	Serial port 1	J18
IDE interface 2	J7	Power switch	JP4
IDE interface 1	J8	32-bit PCI slots	PC1 - PC4
Floppy drive interface	J9	Cache slot	SL1

USER CONFIGURABLE SETTINGS
Function		Label	Position
»	CMOS memory normal operation	JP1	Open
	CMOS memory clear	JP1	Closed
	Flash BIOS voltage select 12v	JP2	Pins 1 & 2 closed
	Flash BIOS voltage select 5v	JP2	Pins 2 & 3 closed

DRAM CONFIGURATION
Size	Bank 0	Bank 1	Bank 2
4MB	(2) 512KB x 32	None	None
8MB	(2) 512KB x 32	(2) 512KB x 32	None
8MB	(2) 1MB x 32	None	None
16MB	(2) 1MB x 32	(2) 1MB x 32	None
16MB	(2) 2MB x 32	None	None
24MB	(2) 1MB x 32	(2) 1MB x 32	(1) 1MB x 64
24MB	(2) 2MB x 32	(2) 1MB x 32	None
32MB	(2) 2MB x 32	(2) 2MB x 32	None
32MB	(2) 4MB x 32	None	None
40MB	(2) 2MB x 32	(2) 2MB x 32	(1) 1MB x 64
40MB	(2) 4MB x 32	(2) 1MB x 32	None
48MB	(2) 2MB x 32	(2) 2MB x 32	(1) 2MB x 64
48MB	(2) 4MB x 32	(2) 2MB x 32	None
64MB	(2) 4MB x 32	(2) 4MB x 32	None
64MB	(2) 8MB x 32	None	None
72MB	(2) 4MB x 32	(2) 4MB x 32	(1) 1MB x 64
72MB	(2) 8MB x 32	(2) 1MB x 32	None
80MB	(2) 4MB x 32	(2) 4MB x 32	(1) 2MB x 64
80MB	(2) 8MB x 32	(2) 2MB x 32	None
96MB	(2) 4MB x 32	(2) 4MB x 32	(1) 4MB x 64
96MB	(2) 8MB x 32	(2) 4MB x 32	None
128MB	(2) 8MB x 32	(2) 8MB x 32	None
Note: Board accepts EDO and SDRAM.

DRAM JUMPER CONFIGURATION
Voltage	S7	S8
3.3v	Pins 2 & 3 closed	Pins 2 & 3 closed
5v	Pins 1 & 2 closed	Pins 1 & 2 closed

CACHE CONFIGURATION

256KB onboard, upgradeable to 512KB by inserting a cache module in SL1.

CPU SPEED SELECTION (CX 6X86)
Speed	Clock speed	Multiplier	JP11	JP12	S1	S2	S3
120MHz	50MHz	2x	2 & 3	1 & 2	Closed	Closed	Open
133MHz	55MHz	2x	2 & 3	1 & 2	Open	Closed	Open
150MHz	60MHz	2x	2 & 3	1 & 2	Closed	Open	Open
166MHz	66MHz	2x	2 & 3	1 & 2	Open	Open	Open
200MHz	66MHz	2.5x	2 & 3	1 & 2	Open	Open	Closed
Note: Numbers designate pins that should be closed.

CPU SPEED SELECTION (AM K5)
Speed	Clock speed	Multiplier	JP11	JP12	S1	S2	S3
75MHz	50MHz	1.5x	1 & 2	1 & 2	Closed	Closed	Open
90MHz	60MHz	1.5x	1 & 2	1 & 2	Closed	Open	Open
100MHz	66MHz	1.5x	1 & 2	1 & 2	Open	Open	Open
120MHz	60MHz	2x	1 & 2	1 & 2	Closed	Open	Open
133MHz	66MHz	2x	1 & 2	1 & 2	Open	Open	Open
150MHz	60MHz	2.5x	1 & 2	1 & 2	Open	Open	Open
166MHz	66MHz	2.5x	2 & 3	2 & 3	Open	Open	Open
Note: Numbers designate pins that should be closed.

CPU SPEED SELECTION (PENTIUM)
Speed	Clock speed	Multiplier	JP11	JP12	S1	S2	S3
75MHz	50MHz	1.5x	1 & 2	1 & 2	Closed	Closed	Open
90MHz	60MHz	1.5x	1 & 2	1 & 2	Closed	Open	Open
100MHz	66MHz	1.5x	1 & 2	1 & 2	Open	Open	Open
120MHz	60MHz	2x	2 & 3	1 & 2	Closed	Open	Open
133MHz	66MHz	2x	2 & 3	1 & 2	Open	Open	Open
150MHz	60MHz	2.5x	2 & 3	2 & 3	Closed	Open	Open
166MHz	66MHz	2.5x	2 & 3	2 & 3	Open	Open	Open
200MHz	66MHz	3x	1 & 2	2 & 3	Open	Open	Open
Note: Numbers designate pins that should be closed.

CPU SPEED SELECTION (PENTIUM MMX)
Speed	Clock speed	Multiplier	JP11	JP12	S1	S2	S3
150MHz	60MHz	2.5x	2 & 3	2 & 3	Closed	Open	Open
166MHz	66MHz	2.5x	2 & 3	2 & 3	Open	Open	Open
200MHz	66MHz	3x	1 & 2	2 & 3	Open	Open	Open
Note: Numbers designate pins that should be closed.

CPU VOLTAGE SELECTION (SINGLE)
Voltage	JP8	S4	S5	S6
3.4v	Closed	Closed	Closed	Closed
3.5v	Open	Closed	Closed	Closed

CPU VOLTAGE SELECTION (DUAL)
Voltage (core)	JP8	S4	S5	S6
2.8v	Closed	Open	Open	Open