RT-286-12/16 Motherboard Settings and Configuration

Processor	80286
Processor Speed	12/16MHz
Chip Set	Acer
Max. Onboard DRAM	6MB
Cache	None
BIOS	Unidentified
Dimensions	254mm x 218mm
I/O Options	None
NPU Options	80287

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

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	NPU synchronous with CPU	JP1	pins 1 & 2 closed
	NPU asynchronous with CPU	JP1	pins 2 & 3 closed
»	I/O bus speed select ATCLK	JP2	Closed
	I/O bus speed select ATCLK/2	JP2	Open
»	Factory configured - do not alter	JP3	Closed
»	Parity enabled	JP4	Open
	Parity disabled	JP4	Closed
»	BIOS type select 27512	JP5	pins 1 & 2 closed
	BIOS type select 27256	JP5	pins 2 & 3 closed
»	Monitor type select monochrome	JP6	pins 1 & 2 closed
	Monitor type select color	JP6	pins 2 & 3 closed
»	Battery type select internal	JP7	pins 1 & 2 closed
	Battery type select external	JP7	pins 2 & 3 closed

DRAM CONFIGURATION
Size	Bank 0	Parity 0	Bank 1	Parity 1	Bank 2	Bank 3
512KB	NONE	NONE	NONE	NONE	(2) 256K x 9	NONE
1MB	NONE	NONE	NONE	NONE	(2) 256K x 9	(2) 256K x 9
2MB	NONE	NONE	NONE	NONE	(2) 1M x 9	NONE
1MB	(4) 44256	(2) 41256	(4) 44256	(2) 41256	NONE	NONE
1.5MB	(4) 44256	(2) 41256	(4) 44256	(2) 41256	(2) 256K 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