4200 Motherboard Settings and Configuration

Processor	80286
Processor Speed	6/10MHz
Chip Set	Unidentified
Video Chip Set	None
Maximum Onboard Memory	1MB
Maximum Video Memory	None
Cache	None
BIOS	Award
Dimensions	355mm x 304mm
I/O Options	None
NPU Options	80287

CONNECTIONS
Purpose	Location	Purpose	Location
Speaker	J1	External battery	J4
Power LED & keylock	J2

USER CONFIGURABLE SETTINGS
Function		Label	Position
»	Factory configured - do not alter	JP1	Unidentified
»	Factory configured - do not alter	JP14	Unidentified
»	Factory configured - do not alter	U107/3	Unidentified
	Monitor type select color	U107/4	On
	Monitor type select monochrome	U107/4	Off

DRAM CONFIGURATION
Size	Bank 0	Bank 1	Bank 2	Bank 3
256KB	(9) 41256	None	None	None
512KB	(9) 41256	(9) 41256	None	None
640KB	(9) 41256	(9) 41256	(9) 4164	(9) 4164
768KB	(9) 41256	(9) 41256	(9) 41256	None
1MB	(9) 41256	(9) 41256	(9) 41256	(9) 41256
Note: The location of the banks are unidentified.

DRAM JUMPER CONFIGURATION
Size	JP7	JP8
256KB	Pins 2 & 3 closed	Pins 1 & 2, 7 & 8 closed
512KB	Pins 1 & 2 closed	Pins 1 & 2, 7 & 8 closed
640KB	Pins 1 & 2 closed	Pins 3 & 4, 9 & 10 closed
768KB	Pins 2 & 3 closed	Pins 5 & 6, 11 & 12 closed
1MB	Pins 1 & 2 closed	Pins 5 & 6, 11 & 12 closed

CPU SPEED SELECTION
Speed	JP11
6MHz	Pins 2 & 3 closed
10MHz	Pins 1 & 2 closed

BIOS SELECTION
Setting	U107/1	U107/2	U107/5	U107/6	U107/7	U107/8
27128	Off	On	On	On	Off	Off
27256	On	Off	Off	Off	On	On