486-33/50UCE, 486DX2-50UCE Motherboard Settings and Configuration

Processor	80486DX/80486DX2
Processor Speed	33/50(internal)/50/66(internal)MHz
Chip Set	UMC
Max. Onboard DRAM	32MB
Cache	64/128/256KB
BIOS	AMI
Dimensions	330mm x 220mm
I/O OPTIONS	32-bit external memory card slot
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
Keyboard connector	J1	Turbo switch	J8 and J17
Speaker	J2	Power LED & Keylock	J9
Turbo LED	J3	External battery	J18
Reset switch	J5 and J14	32-bit external memory card	S1

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	Factory configured - do not alter	J4	closed
»	Factory configured - do not alter	J6	pins 1 & 2 and 3 & 4 closed
»	Factory configured - do not alter	J7	open
»	Battery select internal	J16	pins 2 & 3 closed
	Battery select external	J16	pins 1 & 2 closed
»	Factory configured - do not alter	J19	open
»	Monitor type select color	J20	closed
	Monitor type select monochrome	J20	open

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) 256K x 9	(4) 1M x 9
8MB	(4) 1M x 9	(4) 1M x 9
16MB	(4) 4M x 9	NONE
20MB	(4) 1M x 9	(4) 4M x 9
32MB	(4) 4M x 9	(4) 4M x 9

SRAM CONFIGURATION
Size	Cache SRAM	Location	TAG
64KB	(8) 8K x 8	Banks 0 & 1	(1) 8K x 8
128KB	(4) 32K x 8	Bank 0	(1) 8K x 8
256KB	(8) 32K x 8	Banks 0 & 1	(1) 32K x 8

SRAM JUMPER CONFIGURATION
Jumper	64KB	128KB	256KB
W1	open	closed	closed
W2	open	closed	closed
W3	closed	closed	closed
W4	open	open	closed
W5	open	open	closed
J10	pins 1 & 2 closed	pins 2 & 3 closed	pins 2 & 3 closed
J11	pins 1 & 2 closed	pins 2 & 3 closed	pins 1 & 2 closed
J12	open	pins 1 & 2 closed	pins 2 & 3 closed
J13	pins 1 & 2 closed	pins 1 & 2 closed	pins 2 & 3 closed
J15	closed	closed	closed