P55-BT Motherboard Settings and Configuration

Processor	CX 6X86/CX 6X86L/IBM 6X86/IBM 6X86L//CX 6X86MX/AM K5/ AM K6/Pentium
Processor Speed	90/100/120/133/150/166/180/200/225/233/266MHz
Chip Set	Intel
Video Chip Set	None
Maximum Onboard Memory	256MB (EDO supported)
Maximum Video Memory	None
Cache	512KB
BIOS	Award
Dimensions	254mm x 218mm
I/O Options	32-bit PCI slots (4), floppy drive interface, green PC connector, IDE interfaces (2), parallel port, PS/2 mouse interface, serial ports (2), IR connector, VRM connector, USB connector, ATX power connector
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
ATX power connector	ATX	Soft off power supply	JP9
USB connector	CN1	PS/2 mouse interface	JP13
Parallel port	CN2	Power LED & keylock	JP14/pins 1 – 5
Serial port 2	CN3	Speaker	JP14/pins 7 - 10
Serial port 1	CN4	Reset switch	JP14/pins 12 & 13
IDE interface 2	CN5	Green PC connector	JP14/pins 15 & 16
IDE interface 1	CN6	Green PC LED	JP14/pins 18 & 19
Floppy drive interface	CN7	Turbo LED	JP14/pins 20 & 21
IR connector	J4	IDE interface LED	JP14/pins 23 & 24
Chassis fan power	JP1	32-bit PCI slots	PC1 – PC4

USER CONFIGURABLE SETTINGS
Function		Label	Position
»	Keyboard power on enabled	JP2	Pins 1 & 2 closed
	Keyboard power on disabled	JP2	Pins 2 & 3 closed
»	CMOS memory normal operation	JP8	Pins 1 & 2 closed
	CMOS memory clear	JP8	Pins 2 & 3 closed

DIMM/SIMM CONFIGURATION
Size	Bank 0	Bank 1	Bank 2
8MB	None	None	(2) 1M x 36
8MB	None	(1) 1M x 64	None
16MB	None	None	(2) 2M x 36
16MB	None	(1) 2M x 64	None
16MB	(1) 1M x 64	None	(2) 1M x 36
16MB	(1) 1M x 64	(1) 1M x 64	None
32MB	None	None	(2) 4M x 36
32MB	None	(1) 4M x 64	None
32MB	(1) 2M x 64	None	(2) 2M x 36
32MB	(1) 2M x 64	(1) 2M x 64	None
40MB	(1) 1M x 64	None	(2) 4M x 36
48MB	(1) 4M x 64	None	(2) 2M x 36
48MB	(1) 2M x 64	None	(2) 4M x 36
64MB	None	None	(2) 8M x 36
64MB	(1) 8M x 64	None	None
64MB	(1) 4M x 64	None	(2) 4M x 36
64MB	(1) 4M x 64	(1) 4M x 64	None
72MB	(1) 1M x 64	None	(2) 8M x 36
80MB	(1) 8M x 64	None	(2) 2M x 36
80MB	(1) 2M x 64	None	(2) 8M x 36
96MB	(1) 8M x 64	None	(2) 4M x 36
96MB	(1) 4M x 64	None	(2) 8M x 36

DIMM/SIMM CONFIGURATION (CON’T)
Size	Bank 0	Bank 1	Bank 2
128MB	(1) 8M x 64	None	(2) 8M x 36
128MB	(1) 8M x 64	(1) 8M x 64	None
128MB	None	None	(2) 16M x 36
144MB	(1) 1M x 64	(1) 1M x 64	(2) 16M x 36
160MB	(1) 2M x 64	(1) 2M x 64	(2) 16M x 36
192MB	(1) 4M x 64	(1) 4M x 64	(2) 16M x 36
256MB	(1) 8M x 64	(1) 8M x 64	(2) 16M x 36
Note: Board accepts EDO memory.

DIMM VOLTAGE CONFIGURATION
Voltage		JP7
»	3.3v	Pins 1 & 2, 3 & 4 closed
	5v	Pins 5 & 6, 7 & 8 closed

CACHE CONFIGURATION
Size	Bank 0	TAG
512KB	(2) 64K x 32	Unidentified
Note: The location of the TAG is unidentified.

CPU SPEED SELECTION (CX 6X86)
CPU speed	Clock speed	Multiplier	JP4
133MHz	66MHz	2x	Pins 23 & 24 closed
150MHz	60MHz	2x	Pins 5 & 6 closed
166MHz	66MHz	2x	Pins 7 & 8 closed
200MHz	66MHz	2x	Pins 25 & 26 closed

CPU SPEED SELECTION (CX 6X86L)
CPU speed	Clock speed	Multiplier	JP4
133MHz	66MHz	2x	Pins 23 & 24 closed
150MHz	60MHz	2x	Pins 5 & 6 closed
166MHz	66MHz	2x	Pins 7 & 8 closed
200MHz	66MHz	2x	Pins 25 & 26 closed

CPU SPEED SELECTION (IBM 6X86)
CPU speed	Clock speed	Multiplier	JP4
133MHz	66MHz	2x	Pins 23 & 24 closed
150MHz	60MHz	2x	Pins 5 & 6 closed
166MHz	66MHz	2x	Pins 7 & 8 closed
200MHz	66MHz	2x	Pins 25 & 26 closed

CPU SPEED SELECTION (IBM 6X86L)
CPU speed	Clock speed	Multiplier	JP4
133MHz	66MHz	2x	Pins 23 & 24 closed
150MHz	60MHz	2x	Pins 5 & 6 closed
166MHz	66MHz	2x	Pins 7 & 8 closed
200MHz	66MHz	2x	Pins 25 & 26 closed

CPU SPEED SELECTION (CX 6X86MX)
CPU speed	Clock speed	Multiplier	JP4
166MHz	66MHz	2.5x	Pins 9 & 10 closed
200MHz	66MHz	3x	Pins 11 & 12 closed
233MHz	66MHz	4x	Pins 15 & 16 closed
266MHz	66MHz	4.5x	Pins 19 & 20 closed

CPU SPEED SELECTION (IBM 6X86MX)
CPU speed	Clock speed	Multiplier	JP4
166MHz	66MHz	2.5x	Pins 9 & 10 closed
200MHz	66MHz	3x	Pins 11 & 12 closed
233MHz	66MHz	4x	Pins 15 & 16 closed
266MHz	66MHz	4.5x	Pins 19 & 20 closed

CPU SPEED SELECTION (AM K5/K6)
CPU speed	Clock speed	Multiplier	JP4
90MHz	60MHz	1.5x	Pins 1 & 2 closed
100MHz	66MHz	1.5x	Pins 3 & 4 closed
120MHz	60MHz	2x	Pins 5 & 6 closed
133MHz	66MHz	2x	Pins 7 & 8 closed
150MHz	60MHz	2.5x	Pins 9 & 10 closed
166MHz	66MHz	2.5x	Pins 11 & 12 closed
180MHz	60MHz	3x	Pins 13 & 14 closed
200MHz	66MHz	3x	Pins 15 & 16 closed
225MHz	75MHz	3.5x	Pins 17 & 18 closed
233MHz	66MHz	4x	Pins 19 & 20 closed
266MHz	66MHz	4.5x	Pins 21 & 22 closed

CPU SPEED SELECTION (INTEL)
CPU speed	Clock speed	Multiplier	JP4
90MHz	60MHz	1.5x	Pins 1 & 2 closed
100MHz	66MHz	1.5x	Pins 3 & 4 closed
120MHz	60MHz	2x	Pins 5 & 6 closed
133MHz	66MHz	2x	Pins 7 & 8 closed
150MHz	60MHz	2.5x	Pins 9 & 10 closed
166MHz	66MHz	2.5x	Pins 11 & 12 closed
180MHz	60MHz	3x	Pins 13 & 14 closed
200MHz	66MHz	3x	Pins 15 & 16 closed
225MHz	75MHz	3.5x	Pins 17 & 18 closed
233MHz	66MHz	4x	Pins 19 & 20 closed
266MHz	66MHz	4.5x	Pins 21 & 22 closed

CPU VOLTAGE SELECTION
Voltage		J18
»	2.8v	Pins 1 & 5 closed
	2.9v	Pins 2 & 6 closed
	3.2v	Pins 3 & 7 closed
	3.5v	Pins 4 & 8 closed

FLASH BIOS SELECTION
Setting		J9	J10
»	5v	Pins 2 & 3 closed	Pins 2 & 3 closed
	12v	Pins 1 & 2 closed	Pins 1 & 2 closed