PANTERA 486 Motherboard Settings and Configuration

Processor	80486SX/80486DX/80486DX2/80486DX4/Pentium Overdrive
Processor Speed	25/33/50(internal)/66(internal)/75(internal)/100(internal)MHz
Chip Set	SMC
Max. Onboard DRAM	128MB
Cache	128/256KB (on external cache card)
BIOS	AMI
Dimensions	330mm x 218mm
I/O Options	32-bit PCI bus slots (3), floppy drive interface, IDE interface (2), parallel port, serial ports (2), SCSI interface, external cache card
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
Parallel port	J2	Low power LED	J11
Serial port 2	J3	Power LED & keylock	J12
Serial port 1	J4	IDE interface LED	J13
Floppy drive interface	J5	Speaker	J14
IDE interface (secondary)	J7	SCSI connector	J15
IDE interface (primary)	J8	32-bit PCI bus slots	PC1 - PC3
Chassis fan power	J9	External cache card	SL1
Reset switch	J10

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	CMOS memory normal operation	CLR1	pins 1 & 2 closed
	CMOS memory clear	CLR1	pins 3 & 4 closed
»	Flash BIOS write protect enabled	FLASH1	pins 1 & 2 closed
	Flash BIOS write protect disabled	FLASH1	pins 3 & 4 closed

DRAM CONFIGURATION
Size	Bank 0	Bank 1	Bank 2	Bank 3
2MB	(1) 256K x 36	(1) 256K x 36	NONE	NONE
4MB	(1) 256K x 36	(1) 256K x 36	(1) 256K x 36	(1) 256K x 36
4MB	(1) 512K x 36	(1) 512K x 36	NONE	NONE
8MB	(1) 512K x 36	(1) 512K x 36	(1) 512K x 36	(1) 512K x 36
8MB	(1) 1M x 36	(1) 1M x 36	NONE	NONE
10MB	(1) 1M x 36	(1) 1M x 36	(1) 256K x 36	(1) 256K x 36
12MB	(1) 1M x 36	(1) 1M x 36	(1) 512K x 36	(1) 512K x 36
16MB	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36
16MB	(1) 2M x 36	(1) 2M x 36	NONE	NONE
32MB	(1) 2M x 36	(1) 2M x 36	(1) 2M x 36	(1) 2M x 36
32MB	(1) 4M x 36	(1) 4M x 36	NONE	NONE
64MB	(1) 8M x 36	(1) 8M x 36	NONE	NONE
64MB	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36
96MB	(1) 4M x 36	(1) 4M x 36	(1) 8M x 36	(1) 8M x 36
128MB	(1) 8M x 36	(1) 8M x 36	(1) 8M x 36	(1) 8M x 36

CPU TYPE CONFIGURATION
Type	CP1
80486SX	pins 3 & 5, 4 & 6 closed
80486DX/DX2/DX4/Overdrive	pins 1 & 3, 2 & 4 closed

CPU SPEED CONFIGURATION
Speed	CLK1
25MHz	pins 1 & 3, 4 & 6 closed
33MHz	pins 2 & 4, 3 & 5 closed
50iMHz	pins 1 & 3, 4 & 6 closed
66iMHz	pins 2 & 4, 3 & 5 closed
75iMHz	pins 1 & 3, 4 & 6 closed
100iMHz	pins 2 & 4, 3 & 5 closed

CPU VOLTAGE CONFIGURATION
Voltage	CP2
3.3 volt	pins 1 & 3, 2 & 4 closed
5 volt	pins 3 & 5, 4 & 6 closed