OPAL 486SLC2 REV C Motherboard Settings and Configuration

Processor	CX486SLC2
Processor Speed	50(internal)/66(internal)MHz
Chip Set	IBM
Max. Onboard DRAM	16MB
Cache	64/128KB
BIOS	AMI/MR
Dimensions	254mm x 218mm
I/O Options	32-bit VESA local bus slots (2)
NPU Options	80387SX

CONNECTIONS
Purpose	Location	Purpose	Location
Reset switch	J1	Turbo switch	J4
Speaker	J2	External battery	J25
Power LED & keylock	J3	32-bit VESA local bus slots	SL1 & SL2

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	CMOS memory normal operation	JP9	pins 2 & 3 closed
	CMOS memory clear	JP9	pins 1 & 2 closed
»	Password enabled(MR BIOS only)	JP10	Closed
	Password disabled (MR BIOS only)	JP10	Open

DRAM CONFIGURATION
Size	Bank 0	Bank 1
512KB	(2) 256K x 9	NONE
1MB	(2) 256K x 9	(2) 256K x 9
2MB	(2) 1M x 9	NONE
4MB	(2) 1M x 9	(2) 1M x 9
8MB	(2) 4M x 9	NONE
10MB	(2) 1M x 9	(2) 4M x 9
16MB	(2) 4M x 9	(2) 4M x 9

CACHE CONFIGURATION
Size	Bank 0	Bank 1	TAG
64KB	(2) 32K x 8	NONE	(1) 8K x 8
128KB	(2) 32K x 8	(2) 32K x 8	(1) 32K x 8

CACHE JUMPER CONFIGURATION
Size	JP6
64KB	pins 2 & 3 closed
128KB	pins 1 & 2 closed

CPU SPEED CONFIGURATION
Speed	JP7	JP8
50iMHz	Open	Closed
66iMHz	Closed	Open

BUS SPEED CONFIGURATION
CPU speed	JP5
<=33MHz	Open
>33MHz	Closed

VESA ID CONFIGURATION
ID	JP1	JP2	JP3	JP4
ID0	Open	Open	Open	Closed
ID1	Closed	Closed	Open	Closed
ID2	Closed	Open	Closed	Closed
ID3	Open	Closed	Closed	Closed