286A Motherboard Settings and Configuration

Processor	80286
Processor Speed	12/16MHz
Chip Set	C & T
Max. Onboard DRAM	5MB
Cache	None
BIOS	AMI
Dimensions	310mm x 218mm
I/O Options	Floppy drive interface, game port, IDE interface, parallel port, serial ports (2)
NPU Options	80287

CONNECTIONS
Purpose	Location	Purpose	Location
Serial port 2	J3	Reset switch	J11
Serial port 1	J4	Speaker	J12
Game port	J5	Power LED & keylock	J13
Parallel port	J7	IDE interface	JP9
Floppy drive interface	J8	Turbo switch	JP23
Turbo LED	J10	IDE interface LED	JP28

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
	Monitor type select monochrome	JP2	pins 1 & 2 closed
	Monitor type select color	JP2	pins 2 & 3 closed
	Floppy drive interface enabled	JP4	pins 1 & 2 closed
	Floppy drive interface disabled	JP4	pins 2 & 3 closed
	CPU low speed CLK select 1/2 ATCLK	JP22	Closed
	CPU low speed CLK select 1/4 CLK2N	JP22	Open

DRAM CONFIGURATION
Size	Bank 0	P 0	Bank 1	P 1	Bank 2	Bank 3
512KB	(4) 44256	(2) 41256	NONE	NONE	NONE	NONE
640KB	(4) 44256	(2) 41256	(4) 4464	(2) 4164	NONE	NONE
1MB	(4) 44256	(2) 41256	(4) 44256	(2) 41256	NONE	NONE
2MB	(4) 44256	(2) 41256	(4) 44256	(2) 41256	(2) 256K x 9	(2) 256K x 9
2MB	NONE	NONE	NONE	NONE	(2) 1M x 9	NONE
3MB	(4) 44256	(2) 41256	(4) 44256	(2) 41256	(2) 1M x 9	NONE
4MB	NONE	NONE	NONE	NONE	(2) 1M x 9	(2) 1M x 9
5MB	(4) 44256	(2) 41256	(4) 44256	(2) 41256	(2) 1M x 9	(2) 1M x 9

DRAM CONFIGURATION
Setting	JP10	JP11	JP12	JP13	JP14	JP15
SIMM set as Bank 0 & 1	1 & 2	1 & 2	1 & 2	1 & 2	1 & 2	1 & 2
SIMM set as Bank 2 & 3	2 & 3	2 & 3	2 & 3	2 & 3	2 & 3	2 & 3
Note: Pins designated should be in the closed position.

IDE CONFIGURATION
Setting	JP16	JP17
Enabled	Closed	Closed
Disabled	Open	Open

PARALLEL PORT CONFIGURATION
LPT	JP8	JP9
LPT1	pins 1 & 2 closed	pins 2 & 3 closed
LPT2	pins 1 & 2 closed	pins 1 & 2 closed
LPT3	pins 2 & 3 closed	pins 1 & 2 closed
Disabled	pins 2 & 3 closed	pins 2 & 3 closed

SERIAL PORT CONFIGURATION
Serial port 1	Serial port 2	JP5	JP6	JP7
COM1	COM2	pins 1 & 2 closed	pins 1 & 2 closed	pins 1 & 2 closed
COM1	Disabled	pins 1 & 2 closed	pins 2 & 3 closed	pins 1 & 2 closed
COM2	COM1	pins 2 & 3 closed	pins 1 & 2 closed	pins 1 & 2 closed
Disabled	COM1	pins 2 & 3 closed	pins 1 & 2 closed	pins 2 & 3 closed
Disabled	COM2	pins 1 & 2 closed	pins 1 & 2 closed	pins 2 & 3 closed
COM2	Disabled	pins 2 & 3 closed	pins 2 & 3 closed	pins 1 & 2 closed
Disabled	Disabled	pins 1 & 2 closed	pins 2 & 3 closed	pins 2 & 3 closed