AMTI 486SX20/DX33 Motherboard Settings and Configuration

Processor	80486SX/80487SX/80486DX
Processor Speed	20/33MHz
Chip Set	TI
Max. Onboard DRAM	32MB
Cache	None
BIOS	AMI
Dimensions	330mm x 218mm
I/O Options	32-bit external memory card slot
NPU Options	4167

CONNECTIONS
Purpose	Location	Purpose	Location
External battery	J6	Turbo switch	J13
Reset switch	J10	Turbo LED	J14
Speaker	J11	32-bit external memory card	S1
Power LED & keylock	J12

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	Monitor type select color	J3	Closed
	Monitor type select monochrome	J3	Open
»	POST enabled	J4	Closed
	POST disabled	J4	Open
»	Factory configured - do not alter	J5	N/A

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

CPU TYPE CONFIGURATION
Type	J7	J8
80486SX	pins 1 & 2 closed	pins 3 & 4 closed
80487SX	pins 2 & 3 closed	pins 3 & 4, 5 & 6 closed
80486DX	pins 2 & 3 closed	pins 1 & 2, 5 & 6 closed