P55-VA Motherboard Settings and Configuration

Processor	CX M1/AM K5/Pentium
Processor Speed	75/90/100/120/133/150/166/180/200MHz
Chip Set	Intel
Video Chip Set	None
Maximum Onboard Memory	128MB (EDO supported)
Maximum Video Memory	None
Cache	256/512KB
BIOS	Award
Dimensions	330mm x 218mm
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), cache slot, IR connector, USB connector, ATX power connector
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
ATX power connector	ATX	Power on connector	J3
PS/2 mouse port	CN1	Power LED & keylock	J4 pins 1 - 5
Serial port 1	CN3	Speaker	J4 pins 7 - 10
Parallel port	CN4	Reset switch	J4 pins 12 & 13
Serial port 2	CN5	Turbo LED	J4 pins 15 & 16
USB connector	CN6	Green PC connector	J4 pins 18 & 19
Floppy drive interface	CN7	Green PC LED	J4 pins 21 & 22
IDE interface 1	CN8	IDE interface LED	J4 pins 24 & 25
IDE interface 2	CN9	32-bit PCI slots	PC1 - PC4
Chassis fan power	J1	Cache slot	SL1
IR connector	J2

USER CONFIGURABLE SETTINGS
Function		Label	Position
	Flash BIOS voltage select 12v	JP1	Pins 2 & 3 closed
	Flash BIOS voltage select 5v	JP1	Pins 1 & 2 closed
»	CMOS memory normal operation	JP5	Pins 1 & 2 closed
	CMOS memory clear	JP5	Pins 2 & 3 closed

DRAM CONFIGURATION
Size	Bank 0	Bank 1	Bank 2	Bank 3
8MB	(2) 1M x 36	None	None	None
8MB	None	None	(1) 1M x 64	None
16MB	(2) 1M x 36	(2) 1M x 36	None	None
16MB	(2) 2M x 36	None	None	None
16MB	(2) 1M x 36	None	(1) 1M x 64	None
16MB	None	None	(1) 2M x 64	None
24MB	(2) 2M x 36	(2) 1M x 36	None	None
24MB	(2) 1M x 36	None	(1) 2M x 64	None
32MB	(2) 2M x 36	(2) 2M x 36	None	None
32MB	(2) 4M x 36	None	None	None
32MB	(2) 2M x 36	None	(1) 2M x 64	None
32MB	None	None	(1) 4M x 64	None
32MB	(2) 1M x 36	(2) 1M x 36	(1) 1M x 64	(1) 1M x 64
40MB	(2) 4M x 36	(2) 1M x 36	None	None
40MB	(2) 4M x 36	None	(1) 1M x 64	None
48MB	(2) 2M x 36	(2) 4M x 36	None	None
48MB	(2) 2M x 36	None	(1) 4M x 64	None
64MB	(2) 4M x 36	(2) 4M x 36	None	None
64MB	(2) 8M x 36	None	None	None
64MB	(2) 4M x 36	None	(1) 4M x 64	None
64MB	None	None	(1) 8M x 64	None

DRAM CONFIGURATION (CON’T)
Size	Bank 0	Bank 1	Bank 2	Bank 3
72MB	(2) 1M x 36	(2) 8M x 36	None	None
72MB	(2) 1M x 36	None	(1) 8M x 64	None
72MB	(2) 2M x 36	(2) 2M x 36	(1) 1M x 64	(1) 4M x 64
80MB	(2) 2M x 36	(2) 8M x 36	None	None
80MB	(2) 2M x 36	None	(1) 8M x 64	None
80MB	(2) 4M x 36	(2) 4M x 36	(1) 1M x 64	(1) 1M x 64
96MB	(2) 4M x 36	(2) 8M x 36	None	None
96MB	(2) 4M x 36	None	(1) 8M x 64	None
96MB	(2) 2M x 36	(2) 2M x 36	(1) 4M x 64	(1) 4M x 64
104MB	(2) 4M x 36	(2) 4M x 36	(1) 1M x 64	(1) 4M x 64
128MB	(2) 8M x 36	(2) 8M x 36	None	None
128MB	(2) 8M x 36	None	(1) 8M x 64	None
128MB	(2) 4M x 36	(2) 4M x 36	(1) 4M x 64	(1) 4M x 64
Note: Board accepts EDO memory. Banks are interchangeable.

CACHE CONFIGURATION
Size	Bank 0	SL1	TAG
256KB	(2) 32K x 32	Not installed	Unidentified
512KB	(2) 32K x 32	Installed	Unidentified
512KB	(2) 64K x 32	Not installed	Unidentified

CPU SPEED SELECTION (CYRIX)
CPU speed	Clock speed	Multiplier	JP8
120MHz	50MHz	2x	Pins 10 & 23 closed
133MHz	55MHz	2x	Pins 13 & 26 closed
150MHz	60MHz	2x	Pins 4 & 17 closed
166MHz	66MHz	2x	Pins 5 & 18 closed
200MHz	75MHz	2x	Pins 12 & 25 closed

CPU SPEED SELECTION (INTEL)
CPU speed	Clock speed	Multiplier	JP8
75MHz	50MHz	1.5x	Pins 1 & 14 closed
90MHz	60MHz	1.5x	Pins 2 & 15 closed
100MHz	66MHz	1.5x	Pins 3 & 16 closed
120MHz	60MHz	2x	Pins 4 & 17 closed
133MHz	66MHz	2x	Pins 5 & 18 closed
150MHz	60MHz	2.5x	Pins 6 & 19 closed
166MHz	66MHz	2.5x	Pins 7 & 20 closed
180MHz	60MHz	3x	Pins 8 & 21 closed
200MHz	66MHz	3x	Pins 9 & 22 closed

CPU TYPE SELECTION
Type	JP3A	JP3B	JP3C
CX M1	Pins 1 & 2 closed	Pins 1 & 2 closed	Pins 1 & 2 closed
AM K5	Pins 1 & 2 closed	Pins 1 & 2 closed	Pins 1 & 2 closed
P54C/CTB	Pins 1 & 2 closed	Pins 1 & 2 closed	Pins 1 & 2 closed
P55C	Pins 2 & 3 closed	Pins 2 & 3 closed	Pins 2 & 3 closed

CPU VOLTAGE SELECTION
Voltage		JP4
	2.5v	Pins 1 & 2 closed
»	2.8v	Pins 2 & 3 closed
	2.9v	Open

MISCELLANEOUS TECHNICAL NOTE

If 200MHz Cyrix chip is installed, do not install the COAST module. Also, do not install a PCI 2.0 SCSI card. Either of the above cases will cause the mainboard to lock up. A PCI 2.1 SCSI card may be installed with no problems.