5/486 MOTHERBOARD Motherboard Settings and Configuration

Processor	80486SX/80487SX/80486DX/80486DX2/Pentium Overdrive
Processor Speed	25/33/40/50(internal)/50/66(internal)MHz
Chip Set	Unknown
Max. Onboard DRAM	128MB
Cache	128/256KB
BIOS	AMI
Dimensions	330mm x 218mm
I/O Options	32-bit VESA local bus slots (3)
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
External battery	J2	Power LED & keylock	JP123
Reset switch	JP119	32-bit memory expansion slot	S1
Turbo switch	JP120	32-bit memory expansion slot	S2
Turbo LED	JP121	32-bit memory expansion slot	S3
Speaker	JP122

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	Monitor type select color	JP31	Closed
	Monitor type select monochrome	JP31	Open
»	CMOS memory normal operation	JP33	pins 1 & 2 closed
	CMOS memory clear	JP33	pins 2 & 3 closed
»	VESA clock normal	JP118	pins 1 & 2 closed
	VESA clock adjusted	JP118	pins 2 & 3 closed

CPU SPEED
Speed	JP34	JP35	JP36
25MHz	Closed	Open	Closed
33MHz	Closed	Closed	Open
40MHz	Open	Open	Closed
50iMHz	Closed	Open	Closed
50MHz	Open	Closed	Open
66iMHz	Closed	Closed	Open

CPU TYPE CONFIGURATION
Type	JP30
80486SX	pins 5 & 6 closed
80487SX	pins 1 & 2, 4 & 5, 6 & 7 closed
80486DX	pins 2 & 3, 4 & 5, 6 & 7 closed
80486DX2	pins 2 & 3, 4 & 5, 6 & 7 closed
Pentium Overdrive	pins 1 & 2, 4 & 5, 6 & 7 closed

CACHE CONFIGURATION
Size	U51, U52, U53, U54	U55, U56, U57, U58	TAG	JP58
128KB	(4) 32K x 8	NONE	(1) 8K x 8	Pins 1 & 2 closed
256KB	(4) 32K x 8	(4) 32K x 8	(1) 32K x 8	Pins 2 & 3 closed

DRAM CONFIGURATION
Size	Bank 0	Bank 1
1MB	(4) 256K x 9	NONE
2MB	(4) 256K x 9	(4) 256K x 9
4MB	(4) 1M x 9	NONE
5MB	(4) 1M x 9	(4) 256K x 9
8MB	(4) 1M x 9	(4) 1M x 9
16MB	(4) 4M x 9	NONE
17MB	(4) 4M x 9	(4) 256K x 9
20MB	(4) 4M x 9	(4) 1M x 9
32MB	(4) 4M x 9	(4) 4M x 9
64MB	(4) 16M x 9	NONE
65MB	(4) 16M x 9	(4) 256K x 9
68MB	(4) 16M x 9	(4) 1M x 9
80MB	(4) 16M x 9	(4) 4M x 9
128MB	(4) 16M x 9	(4) 16M x 9