A4870 VER. 2.0 Motherboard Settings and Configuration

Processor	80486DX
Processor Speed	33MHz
Chip Set	UMC
Max. Onboard DRAM	32MB
Cache	64/128/256KB
BIOS	AMI
Dimensions	330.2mm x 218.4mm
I/O Options	32-bit external memory card slot
NPU Options	4167

CONNECTIONS
Purpose	Location	Purpose	Location
External battery	J1	Speaker	J10
Turbo switch	J7	Power LED & keylock	J11
Turbo LED	J8	32-bit external memory card	S1
Reset switch	J9

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	CMOS memory normal operation	J4	pins 1 & 2 closed
	CMOS memory clear	J4	pins 2 & 3 closed
»	Monitor type select color	J5	Closed
	Monitor type select monochrome	J5	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
17MB	(4) 256K x 9	(4) 4M x 9
20MB	(4) 1M x 9	(4) 4M x 9
32MB	(4) 4M x 9	(4) 4M x 9

CACHE CONFIGURATION
Size	Bank 0	Bank 1	TAG
64KB	(4) 8K x 8	(4) 8K x 8	(4) 4K x 4
128KB	(4) 32K x 8	NONE	(4) 16K x 4
256KB	(4) 32K x 8	(4) 32K x 8	(4) 16K x 4

CACHE JUMPER CONFIGURATION
Size	W3	W4	W5	W6	W7	W8
64KB	1 & 2	Open	Open	2 & 3	1 & 2	1 & 2
128KB	2 & 3	1 & 2	Open	2 & 3	1 & 2	1 & 2
256KB	1 & 2	2 & 3	Open	2 & 3	2 & 3	2 & 3
Note:Pins designated should be in closed position.