GMB-P56IPA (VER. 1.01) Motherboard Settings and Configuration

VEXTREC TECHNOLOGY, INC.

GMB-P56IPA (VER. 1.01)

Device Type
Mainboard
Processor
CX 6X68/AM K5/Pentium/Pentium MMX
Processor Speed
75/90/100/120/133/150/166/180/200MHz
Chip Set
Intel 430VX
Video Chip Set
S3
Maximum Onboard Memory
128MB (EDO & SDRAM supported)
Maximum Video Memory
2MB
Cache
256/512KB
BIOS
AMI/Award
I/O Options
IDE interfaces (2), floppy drive interface, parallel port, PS/2 mouse port, serial ports (2), VGA port, VGA feature connector, cache slot, expansion slot, IR connector, USB connectors (2), FIR connector, MPEG module connector, green PC connector
Dimensions
200mm x 320mm

CONNECTIONS
Purpose
Location
Purpose
Location
Reset switch
J1
VGA port
J14
Green PC connector
J2
Parallel port
J15
Suspend LED
J3
Serial port 1
J16
Speaker
J4
Serial port 2
J17
IDE interface LED
J5
USB connector 1
J18
Power LED & keylock
J6
USB connector 2
J19
IDE interface 1
J7
FIR connector
J20
IDE interface 2
J8
IR connector
J21
Floppy drive interface
J9
PS/2 mouse port
J22
VGA feature connector
J12
Expansion slot
SL1
S3 MPEG module upgrade connector
J13
Cache slot
SL2

USER CONFIGURABLE SETTINGS

S3 MPEG Module not installed
JP8
Open

S3 MPEG Module installed
JP8
Closed
»
CMOS memory normal operation
JP9
Open

CMOS memory clear
JP9
Closed

Flash BIOS voltage select 12v
JP13
Pins 1 & 2 closed

Flash BIOS voltage select 5v
JP13
Pins 2 & 3 closed

On board VGA enabled
JP14
Closed

On board VGA disabled
JP14
Open

DRAM CONFIGURATION
Size
Bank 0
Bank 1
Bank 2
8MB
(2) 1MB x 36
None
None
16MB
(2) 1MB x 36
(2) 1MB x 36
None
16MB
(2) 2MB x 36
None
None
24MB
(2) 1MB x 36
(2) 1MB x 36
(1) 1MB x 64
24MB
(2) 2MB x 36
(2) 1MB x 36
None
32MB
(2) 2MB x 36
(2) 2MB x 36
None
32MB
(2) 4MB x 36
None
None
40MB
(2) 2MB x 36
(2) 2MB x 36
(1) 1MB x 64
40MB
(2) 4MB x 36
(2) 1MB x 36
None
48MB
(2) 2MB x 36
(2) 2MB x 36
(1) 2MB x 64
48MB
(2) 4MB x 36
(2) 2MB x 36
None
64MB
(2) 4MB x 36
(2) 4MB x 36
None
64MB
(2) 8MB x 36
None
None
72MB
(2) 4MB x 36
(2) 4MB x 36
(1) 1MB x 64
72MB
(2) 8MB x 36
(2) 1MB x 36
None
80MB
(2) 4MB x 36
(2) 4MB x 36
(1) 2MB x 64
80MB
(2) 8MB x 36
(2) 2MB x 36
None
96MB
(2) 4MB x 36
(2) 4MB x 36
(1) 4MB x 64
96MB
(2) 8MB x 36
(2) 4MB x 36
None
128MB
(2) 8MB x 36
(2) 8MB x 36
None

CACHE CONFIGURATION
Size
Bank 0
Bank 1
TAG
256KB
(2) 32K x 36
None
(1) 8K/16K/32K x 8
512KB
(2) 32K x 36
256K module installed at SL2
(1) 8K/16K/32K x 8

VIDEO MEMORY CONFIGURATION
Size
Bank 0
Bank 1
1MB
(2) 256KB x 16
None
2MB
(2) 256KB x 16
(2) 256KB x 16

CPU SPEED SELECTION (CX 6X86)
Speed
Clock speed
Multiplier
JP4
JP5
S1
S2
S3
120MHz
60MHz
2x
1 & 2
2 & 3
Closed
Closed
Open
133MHz
66MHz
2x
1 & 2
2 & 3
Open
Closed
Open
150MHz
60MHz
2.5x
1 & 2
2 & 3
Closed
Open
Open
166MHz
66MHz
2.5x
1 & 2
2 & 3
Open
Open
Open
200MHz
66MHz
3x
1 & 2
2 & 3
Open
Open
Closed
Note: Designated pins should be in the closed position. Settings are with clock generator installed on U8.

CPU SPEED SELECTION (AM K5)
Speed
Clock speed
Multiplier
JP4
JP5
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
2 & 3
Closed
Open
Open
166MHz
66MHz
2.5x
1 & 2
2 & 3
Open
Open
Open
Note: Designated pins should be in the closed position. Settings are with clock generator installed on U8.

CPU SPEED SELECTION (PENTIUM)
Speed
Clock speed
Multiplier
JP4
JP5
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
2 & 3
Closed
Open
Open
133MHz
66MHz
2x
1 & 2
2 & 3
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
180MHz
60MHz
3x
2 & 3
1 & 2
Closed
Open
Open
200MHz
66MHz
3x
2 & 3
1 & 2
Open
Open
Open
Note: Designated pins should be in the closed position. Settings are with clock generator installed on U8.

CPU SPEED SELECTION (PENTIUM MMX)
Speed
Clock speed
Multiplier
JP4
JP5
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
180MHz
60MHz
3x
2 & 3
1 & 2
Closed
Open
Open
200MHz
66MHz
3x
2 & 3
1 & 2
Open
Open
Open
Note: Designated pins should be in the closed position. Settings are with clock generator installed on U8.

ALTERNATE CPU SPEED SELECTION (CX 6X86)
Speed
Clock speed
Multiplier
JP4
JP5
S1
S2
S3
120MHz
50MHz
2x
1 & 2
2 & 3
Closed
Closed
Closed
133MHz
55MHz
2x
1 & 2
2 & 3
Closed
Closed
Open
150MHz
60MHz
2x
1 & 2
2 & 3
Closed
Open
Open
166MHz
66MHz
2x
1 & 2
2 & 3
Open
Open
Open
200MHz
66MHz
2.5x
1 & 2
2 & 3
Open
Closed
Open
Note: Designated pins should be in the closed position. Settings are with clock generator installed on U7.

ALTERNATE CPU SPEED SELECTION (AM K5)
Speed
Clock speed
Multiplier
JP4
JP5
S1
S2
S3
75MHz
50MHz
1.5x
1 & 2
1 & 2
Closed
Closed
Closed
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
2 & 3
Closed
Open
Open
166MHz
66MHz
2.5x
1 & 2
2 & 3
Open
Open
Open
Note: Designated pins should be in the closed position. Settings are with clock generator installed on U7.

ALTERNATE CPU SPEED SELECTION (PENTIUM)
Speed
Clock speed
Multiplier
JP4
JP5
S1
S2
S3
75MHz
50MHz
1.5x
1 & 2
1 & 2
Closed
Closed
Closed
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
2 & 3
Closed
Open
Open
133MHz
66MHz
2x
1 & 2
2 & 3
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
180MHz
60MHz
3x
2 & 3
1 & 2
Closed
Open
Open
200MHz
66MHz
3x
2 & 3
1 & 2
Open
Open
Open
Note: Designated pins should be in the closed position. Settings are with clock generator installed on U7.

ALTERNATE CPU SPEED SELECTION (PENTIUM MMX)
Speed
Clock speed
Multiplier
JP4
JP5
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
180MHz
60MHz
3x
2 & 3
1 & 2
Closed
Open
Open
200MHz
66MHz
3x
2 & 3
1 & 2
Open
Open
Open
Note: Designated pins should be in the closed position. Settings are with clock generator installed on U7.

CPU VOLTAGE SELECTION (SINGLE)
Voltage
Q2
JP3
S4
S5
S6
3.4v
2 transistors installed
Closed
N/A
N/A
N/A
3.4v
1 transistor installed
Closed
Closed
Closed
Closed
3.5v
2 transistors installed
Open
N/A
N/A
N/A
3.5v
1 transistors installed
Open
Closed
Closed
Closed

CPU VOLTAGE SELECTION (DUAL)
Voltage
Vcore
Q2
JP3
S4
S5
S6
3.4v
2.9v
2 transistors installed
Closed
Open
Open
Open

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Device Type	Mainboard
Processor	CX 6X68/AM K5/Pentium/Pentium MMX
Processor Speed	75/90/100/120/133/150/166/180/200MHz
Chip Set	Intel 430VX
Video Chip Set	S3
Maximum Onboard Memory	128MB (EDO & SDRAM supported)
Maximum Video Memory	2MB
Cache	256/512KB
BIOS	AMI/Award
I/O Options	IDE interfaces (2), floppy drive interface, parallel port, PS/2 mouse port, serial ports (2), VGA port, VGA feature connector, cache slot, expansion slot, IR connector, USB connectors (2), FIR connector, MPEG module connector, green PC connector
Dimensions	200mm x 320mm

CONNECTIONS
Purpose	Location	Purpose	Location
Reset switch	J1	VGA port	J14
Green PC connector	J2	Parallel port	J15
Suspend LED	J3	Serial port 1	J16
Speaker	J4	Serial port 2	J17
IDE interface LED	J5	USB connector 1	J18
Power LED & keylock	J6	USB connector 2	J19
IDE interface 1	J7	FIR connector	J20
IDE interface 2	J8	IR connector	J21
Floppy drive interface	J9	PS/2 mouse port	J22
VGA feature connector	J12	Expansion slot	SL1
S3 MPEG module upgrade connector	J13	Cache slot	SL2

USER CONFIGURABLE SETTINGS
		S3 MPEG Module not installed	JP8	Open
	S3 MPEG Module installed	JP8	Closed
»	CMOS memory normal operation	JP9	Open
	CMOS memory clear	JP9	Closed
	Flash BIOS voltage select 12v	JP13	Pins 1 & 2 closed
	Flash BIOS voltage select 5v	JP13	Pins 2 & 3 closed
	On board VGA enabled	JP14	Closed
	On board VGA disabled	JP14	Open

DRAM CONFIGURATION
Size	Bank 0	Bank 1	Bank 2
8MB	(2) 1MB x 36	None	None
16MB	(2) 1MB x 36	(2) 1MB x 36	None
16MB	(2) 2MB x 36	None	None
24MB	(2) 1MB x 36	(2) 1MB x 36	(1) 1MB x 64
24MB	(2) 2MB x 36	(2) 1MB x 36	None
32MB	(2) 2MB x 36	(2) 2MB x 36	None
32MB	(2) 4MB x 36	None	None
40MB	(2) 2MB x 36	(2) 2MB x 36	(1) 1MB x 64
40MB	(2) 4MB x 36	(2) 1MB x 36	None
48MB	(2) 2MB x 36	(2) 2MB x 36	(1) 2MB x 64
48MB	(2) 4MB x 36	(2) 2MB x 36	None
64MB	(2) 4MB x 36	(2) 4MB x 36	None
64MB	(2) 8MB x 36	None	None
72MB	(2) 4MB x 36	(2) 4MB x 36	(1) 1MB x 64
72MB	(2) 8MB x 36	(2) 1MB x 36	None
80MB	(2) 4MB x 36	(2) 4MB x 36	(1) 2MB x 64
80MB	(2) 8MB x 36	(2) 2MB x 36	None
96MB	(2) 4MB x 36	(2) 4MB x 36	(1) 4MB x 64
96MB	(2) 8MB x 36	(2) 4MB x 36	None
128MB	(2) 8MB x 36	(2) 8MB x 36	None

CACHE CONFIGURATION
Size	Bank 0	Bank 1	TAG
256KB	(2) 32K x 36	None	(1) 8K/16K/32K x 8
512KB	(2) 32K x 36	256K module installed at SL2	(1) 8K/16K/32K x 8

VIDEO MEMORY CONFIGURATION
Size	Bank 0	Bank 1
1MB	(2) 256KB x 16	None
2MB	(2) 256KB x 16	(2) 256KB x 16

CPU SPEED SELECTION (CX 6X86)
Speed	Clock speed	Multiplier	JP4	JP5	S1	S2	S3
120MHz	60MHz	2x	1 & 2	2 & 3	Closed	Closed	Open
133MHz	66MHz	2x	1 & 2	2 & 3	Open	Closed	Open
150MHz	60MHz	2.5x	1 & 2	2 & 3	Closed	Open	Open
166MHz	66MHz	2.5x	1 & 2	2 & 3	Open	Open	Open
200MHz	66MHz	3x	1 & 2	2 & 3	Open	Open	Closed
Note: Designated pins should be in the closed position. Settings are with clock generator installed on U8.

CPU SPEED SELECTION (AM K5)
Speed	Clock speed	Multiplier	JP4	JP5	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	2 & 3	Closed	Open	Open
166MHz	66MHz	2.5x	1 & 2	2 & 3	Open	Open	Open
Note: Designated pins should be in the closed position. Settings are with clock generator installed on U8.

CPU SPEED SELECTION (PENTIUM)
Speed	Clock speed	Multiplier	JP4	JP5	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	2 & 3	Closed	Open	Open
133MHz	66MHz	2x	1 & 2	2 & 3	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
180MHz	60MHz	3x	2 & 3	1 & 2	Closed	Open	Open
200MHz	66MHz	3x	2 & 3	1 & 2	Open	Open	Open
Note: Designated pins should be in the closed position. Settings are with clock generator installed on U8.

CPU SPEED SELECTION (PENTIUM MMX)
Speed	Clock speed	Multiplier	JP4	JP5	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
180MHz	60MHz	3x	2 & 3	1 & 2	Closed	Open	Open
200MHz	66MHz	3x	2 & 3	1 & 2	Open	Open	Open
Note: Designated pins should be in the closed position. Settings are with clock generator installed on U8.

CPU VOLTAGE SELECTION (SINGLE)
Voltage	Q2	JP3	S4	S5	S6
3.4v	2 transistors installed	Closed	N/A	N/A	N/A
3.4v	1 transistor installed	Closed	Closed	Closed	Closed
3.5v	2 transistors installed	Open	N/A	N/A	N/A
3.5v	1 transistors installed	Open	Closed	Closed	Closed

CPU VOLTAGE SELECTION (DUAL)
Voltage	Vcore	Q2	JP3	S4	S5	S6
3.4v	2.9v	2 transistors installed	Closed	Open	Open	Open