80386SX Motherboard Settings and Configuration

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

CONNECTIONS
Purpose	Location	Purpose	Location
Power LED & keylock	J1	Turbo LED	J5
Speaker	J2	External battery	J6
Turbo switch	J3	Auxiliary keyboard	J7
Reset switch	J4

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	NPU mode select synchronous with CPU	JP4 JP6	open pins 2 & 3 closed
	NPU mode select asynchronous with CPU	JP4 JP6	closed pins 1 & 2 closed
	NPU enabled	JP5	closed
	NPU disabled	JP5	open
»	BIOS ROM type select 27256	JP7	pins 1 & 2 closed
	BIOS ROM type select 27512	JP7	pins 2 & 3 closed
»	Monitor type select monochrome	JP8	pins 2 & 3 closed
	Monitor type select color	JP8	pins 1 & 2 closed
»	8042 switch CPU speed select pin 23	JP9	pins 1 & 2 closed
	8042 switch CPU speed select pin 30	JP9	pins 2 & 3 closed

DRAM CONFIGURATION
Size	Bank 0(SIMM)	Bank 1 (SIMM)	Bank 2 (DIP)	Bank 3 (DIP)
512KB 1	(2) 256K x 9	NONE	NONE	NONE
512KB 2	NONE	NONE	(18) 41256	NONE
1MB 1	(2) 256K x 9	(2) 256K x 9	NONE	NONE
1MB 2	NONE	NONE	(18) 41256	(18) 41256
1.5MB 1	(2) 256K x 9	(2) 256K x 9	(18) 41256	NONE
1.5MB 2	(2) 256K x 9	NONE	(18) 41256	(18) 41256
2MB 1	(2) 256K x 9	(2) 256K x 9	(18) 41256	(18) 41256
2MB 1	(2) 1M x 9	NONE	NONE	NONE
2MB 2	NONE	NONE	(18) 411000	(18) 411000
4MB 1	(2) 1M x 9	(2) 1M x 9	NONE	NONE
4MB 2	(2) 1M x 9	NONE	(18) 411000	(18) 411000
5MB 1	(2) 1M x 9	(2) 1M x 9	(18) 41256	(18) 41256
5MB 1	(2) 1M x 9	(2) 1M x 9	(18) 411000	NONE
5MB 2	(2) 1M x 9	(2) 1M x 9	(18) 41256	(18) 41256
6MB 1	(2) 1M x 9	(2) 1M x 9	(18) 411000	(18) 411000
6MB 2	(2) 1M x 9	(2) 1M x 9	(18) 411000	(18) 411000
8MB 1	(2) 4M x 9	(2) 4M x 9	NONE	NONE
Note 1 :Jumpers JP1 and JP2 pins 1 & 2, 3 & 4, 5 & 6, 7 & 8, 9 & 10,and 11 & 12 closed.
Note 2 :Jumpers JP1 and JP2 pins 1 & 12, 2 & 11, 3 & 10, 4 & 9, 5 & 8, and 6 & 7 closed.