HED-981, HED-984 Motherboard Settings and Configuration

Processor	80286
Processor Speed	12MHz
Chip Set	VLSI
Max. Onboard DRAM	4MB
Cache	None
BIOS	AMI/Award
Dimensions	330mm x 218mm
I/O Options	None
NPU Options	80287

CONNECTIONS
Purpose	Location	Purpose	Location
Reset switch	JP1	Turbo switch	JP4
Power LED & keylock	JP2	Turbo LED	JP5
Speaker	JP3	External battery	JP17

USER CONFIGURABLE SETTINGS
Function		Jumper	Location
»	Factory configured - do not alter	JP0	N/A
	Memory speed select 100ns	JP6	pins 1 & 2 closed
»	DRAM select 0 wait states	JP10	Closed
	DRAM select 1 wait state	JP10	Open
»	BIOS type select 27256	JP11	pins 1 & 2 closed
	BIOS type select 27128	JP11	pins 2 & 3 closed
»	Monitor type select color	JP12	pins 1 & 2 closed
	Monitor type select monochrome	JP12	pins 2 & 3 closed
»	Factory configured - do not alter	JP13	N/A
»	Factory configured - do not alter	JP14	N/A
»	Factory configured - do not alter	JP15	N/A
»	Factory configured - do not alter	JP18	N/A
»	Battery select internal	JPA	pins 1 & 2 closed
	Battery select external	JPA	Open

DRAM CONFIGURATION
Size	Bank 0	Bank 1	Bank 2	Bank 3	P-0	P-1
512KB	(16) 41256	NONE	NONE	NONE	(2) 41256	NONE
512KB	NONE	NONE	(4) 44256	NONE	(2) 41256	NONE
640KB	NONE	(16) 4164	(4) 44256	NONE	(2) 41256	(2) 4164
1MB	(16) 41256	(16) 41256	NONE	NONE	(2) 41256	NONE
1MB	NONE	NONE	(4) 44256	(4) 44256	(2) 41256	NONE
2MB	(16) 411000	NONE	NONE	NONE	(2) 411000	NONE
4MB	(16) 411000	(16) 411000	NONE	NONE	(2) 411000	(2) 411000

DRAM JUMPER CONFIGURATION
Size	JP7	JP8	JP9
512KB	Closed	Closed	Closed
640KB	Closed	Closed	Open
1MB	Closed	Open	Closed
2MB	Closed	Open	Open
4MB	Open	Closed	Closed