SX386 16N/SX386 20N Motherboard Settings and Configuration

Processor	80386SX
Processor Speed	16/20MHz
Chip Set	C & T NEAT
Max. Onboard DRAM	8MB
SRAM Cache	None
BIOS	Phoenix
Dimensions	330mm x 218mm
I/O Options	None
NPU Options	80387SX

CONNECTIONS
Purpose	Location	Purpose	Location
External battery	J1	Reset switch	J4
Power LED & keylock	J2	Turbo switch	J5
Speaker	J3	Turbo LED	J6

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	Battery select internal	JP1	pins 2 & 3 closed
	Battery select external	JP1	pins 1 & 2 closed
»	Factory configured - do not alter	JP3	open
»	Monitor type select Monochrome	JP4	pins 2 & 3 closed
	Monitor type select color	JP4	pins 1 & 2 closed
»	NPU disabled	JP7	pins 2 & 3 closed
	NPU enabled	JP7	pins 1 & 2 closed

DRAM CONFIGURATION
Size	Bank 0 (SIPP)	Bank 1(SIPP)	Bank 2(DIP)	Bank 3(DIP)	JP5,JP6,JP8 - JP17
512KB	NONE	NONE	(18) 41256	NONE	pins 1 & 2 closed
512KB	(2) 256K x 9	NONE	NONE	NONE	pins 2 & 3 closed
640KB	NONE	NONE	(18) 41256	(18) 4164	pins 1 & 2 closed
1MB	NONE	NONE	(18) 41256	(18) 41256	pins 1 & 2 closed
1MB	(2) 256K x 9	(2) 256K x 9	NONE	NONE	pins 2 & 3 closed
1.5MB	(2) 256K x 9	NONE	(18) 41256	(18) 41256	pins 1 & 2 closed
1.5MB	(2) 256K x 9	(2) 256K x 9	(18) 41256	NONE	pins 2 & 3 closed
1.64MB	(2) 256K x 9	(2) 256K x 9	(18) 41256	(18) 4164	pins 1 & 2 closed
2MB	NONE	NONE	(18) 411000	NONE	pins 1 & 2 closed
2MB	(2) 256K x 9	(2) 256K x 9	(18) 41256	NONE	pins 2 & 3 closed
2MB	(2) 1M x 9	NONE	NONE	(18) 41256	pins 2 & 3 closed
3MB	(2) 1M x 9	NONE	(18) 41256	(18) 41256	pins 1 & 2 closed
3MB	(2) 256K x 9	(2) 256K x 9	(18) 411000	NONE	pins 2 & 3 closed
4MB	NONE	NONE	(18) 411000	(18) 411000	pins 1 & 2 closed
4MB	(2) 1M x 9	(2) 1M x 9	NONE	NONE	pins 2 & 3 closed
4.64MB	(2) 1M x 9	(2) 1M x 9	(18) 41256	(18) 4164	pins 1 & 2 closed
5MB	(2) 1M x 9	(2) 1M x 9	(18) 41256	(18) 41256	pins 1 & 2 closed
5MB	(2) 256K x 9	(2) 256K x 9	(18) 411000	(18) 411000	pins 2 & 3 closed
6MB	(2) 1M x 9	(2) 1M x 9	(18) 411000	NONE	pins 2 & 3 closed
6MB	(2) 1M x 9	NONE	(18) 411000	(18) 411000	pins 1 & 2 closed
8MB	(2) 1M x 9	(2) 1M x 9	(18) 411000	(18) 411000	pins 2 & 3 closed