404 386SX Motherboard Settings and Configuration

Processor	80386SX
Processor Speed	16/20/25MHz
Chip Set	ALI
Video Chip Set	None
Maximum Onboard Memory	8MB
Maximum Video Memory	None
Cache	None
BIOS	AMI
Dimensions	254mm x 218mm
I/O Options	None
NPU Options	80387SX

CONNECTIONS
Purpose	Location	Purpose	Location
External battery	J1	Power LED & keylock	J20
Reset switch	J18	Turbo LED	J21 pins 1 & 2
Speaker	J19	Turbo switch	J21 pins 4 & 5

USER CONFIGURABLE SETTINGS
Function		Label	Position
	Fast A20 gate signal from chip set	J4	Pins 1 & 2 closed
	Fast A20 gate signal from keyboard controller	J4	Pins 2 & 3 closed
	Monitor type select color	JP1	Pins 2 & 3 closed
	Monitor type select monochrome	JP1	Pins 1 & 2 closed

DRAM CONFIGURATION
Size	Bank 0	Bank 1	Bank 2	Bank 3
512KB	(2) 256K x 9	None	None	None
1MB	(2) 256K x 9	(2) 256K x 9	None	None
1.5MB	(2) 256K x 9	(2) 256K x 9	(2) 256K x 9	None
2MB	(2) 256K x 9	(2) 256K x 9	(2) 256K x 9	(2) 256K x 9
2MB	(2) 1M x 9	None	None	None
4MB	(2) 1M x 9	(2) 1M x 9	None	None
6MB	(2) 1M x 9	(2) 1M x 9	(2) 1M x 9	None
8MB	(2) 1M x 9	(2) 1M x 9	(2) 1M x 9	(2) 1M x 9

CPU SPEED SELECTION
Speed	J3	J5
16MHz	Pins 1 & 2 closed	Pins 1 & 2 closed
20MHz	Pins 1 & 2 closed	Pins 2 & 3 closed
25MHz	Pins 2 & 3 closed	Pins 2 & 3 closed