J-286P SYSTEM BOARD Motherboard Settings and Configuration

Processor	80286 (exact location unknown)
Processor Speed	12/16/20/24MHz
Chip Set	Suntac
Max. Onboard DRAM	5MB
Cache	None
BIOS	AMI
Dimensions	220mm x 220mm
I/O Options	Floppy drive interface (on some models), IDE interface (on some models)
NPU Options	80287 (exact location unknown)

CONNECTIONS
Purpose	Location	Purpose	Location
Reset switch	J1	Speaker	J4
Turbo switch	J2	Power LED & keylock	J5
Turbo LED	J3	External battery	JP9

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	Factory configured - do not alter	JP1	Open
»	Factory configured - do not alter	JP2	Open
»	Floppy drive interface enabled (interface location unknown)	JP5	Closed
	Floppy drive interface disabled	JP5	Open
»	Monitor type select monochrome	JP12	Open
	Monitor type select color	JP12	Closed
»	Parity check enabled	JP13	Closed
	Parity check disabled	JP13	Open

DRAM CONFIGURATION
Size	Bank 0	Bank 1	Bank 2	Parity 2	Bank 3	Parity 3
1MB	NONE	NONE	(4) 44256	(4) 41256	(4) 44256	(4) 41256
1MB	(2) 256K x 9	(2) 256K x 9	NONE	NONE	NONE	NONE
2MB	(2) 256K x 9	(2) 256K x 9	(4) 44256	(4) 41256	(4) 44256	(4) 41256
2MB	(2) 1M x 9	NONE	NONE	NONE	NONE	NONE
3MB	(2) 1M x 9	NONE	(4) 44256	(4) 41256	(4) 44256	(4) 41256
4MB	(2) 1M x 9	(2) 1M x 9	NONE	NONE	NONE	NONE
5MB	(2) 1M x 9	(2) 1M x 9	(4) 44256	(4) 41256	(4) 44256	(4) 41256

DRAM JUMPER CONFIGURATION
Size	JP8	JP9	JP10	JP11
1MB	pins 2 & 3 closed	pins 2 & 3 closed	pins 2 & 3 closed	pins 2 & 3 closed
1MB	pins 1 & 2 closed	pins 1 & 2 closed	pins 1 & 2 closed	pins 1 & 2 closed
2MB	pins 2 & 3 closed	pins 2 & 3 closed	pins 2 & 3 closed	pins 2 & 3 closed
2MB	pins 1 & 2 closed	pins 1 & 2 closed	pins 1 & 2 closed	pins 1 & 2 closed
3MB	pins 2 & 3 closed	pins 2 & 3 closed	pins 2 & 3 closed	pins 2 & 3 closed
4MB	pins 1 & 2 closed	pins 1 & 2 closed	pins 1 & 2 closed	pins 1 & 2 closed
5MB	pins 2 & 3 closed	pins 2 & 3 closed	pins 2 & 3 closed	pins 2 & 3 closed

IDE INTERFACE CONFIGURATION
Setting	JP3	JP4
Enabled	Closed	Open
Disabled	Open	Closed
Note: The location of the interface is unknown. Interface is an option and may not be present.

CPU SPEED CONFIGURATION
System speed	Bus speed	JP20
12MHz	6MHz	pins 1 & 2 closed
16MHz	8MHz	pins 1 & 2 closed
20MHz	8MHz	pins 2 & 3 closed
24MHz	8MHz	pins 2 & 3 closed