640K SYSTEM BOARD Motherboard Settings and Configuration

Processor	8088
Processor Speed	10MHz
Chip Set	Unidentified
Max. Onboard DRAM	640KB
Cache	None
BIOS	Unidentified
Dimensions	330mm x 218mm
I/O Options	None
NPU Options	8087

CONNECTIONS
Purpose	Location	Purpose	Location
Turbo switch	JP1	Speaker	JP2C
Turbo LED	JP2A	Reset switch	JP2D
Power LED & keylock	JP2B

USER CONFIGURABLE SETTINGS
Function		Switch	Position
»	Factory configured - do not alter	SW1/1	Off
»	NPU disabled	SW1/2	On
	NPU enabled	SW1/2	Off
»	Factory configured - do not alter	SW1/3	Off
»	Factory configured - do not alter	SW1/4	Off

DRAM CONFIGURATION
Size	Bank 0	Bank 1	Bank 2	Bank 2A	Bank 3	Bank 3A
256KB	(9) 41256	NONE	NONE	NONE	NONE	NONE
512KB	(9) 41256	(9) 41256	NONE	NONE	NONE	NONE
576KB	(9) 41256	(9) 41256	(2) 4464	(1) 4164	NONE	NONE
640KB	(9) 41256	(9) 41256	(2) 4464	(1) 4164	(2) 4464	(1) 4164

DISPLAY ADAPTER SWITCH CONFIGURATION
Size	SW1/5	SW1/6
None installed	On	On
Color (40 x 20)	Off	On
Color (80 x 25)	On	Off
Monochrome	Off	Off

FLOPPY DRIVE SWITCH CONFIGURATION
Drives installed	SW1/7	SW1/8
1	On	On
2	Off	On
3	On	Off
4	Off	Off