PORTABLE PC Motherboard Settings and Configuration

Processor	8088
Processor Speed	Unidentified
Chip Set	Unidentified
Video Chip Set	Unidentified
Maximum Onboard Memory	512KB
Maximum Video Memory	Unidentified
Cache	None
BIOS	Unidentified
Dimensions	355mm x 304mm
I/O Options	Floppy drive interface, serial ports (2), light pen connector
NPU Options	8087

CONNECTIONS
Purpose	Location	Purpose	Location
Serial port	J7	Light pen connector	P2
Serial port	J8	Speaker	P3
Floppy drive interface	J9

USER CONFIGURABLE SETTINGS
Function		Label	Position
»	Factory configured – do not alter	J1	Unidentified
»	Factory configured – do not alter	J2	Unidentified
	BIOS type select 8KB	JP1	Closed
	BIOS type select 16KB	JP1	Open
	Keyboard voltage select 12v	JP2	Pins 1 & 2 closed
	Keyboard voltage select 5v	JP2	Pins 2 & 3 closed
»	Factory configured – do not alter	P4	Unidentified
»	Factory configured – do not alter	P5	Unidentified
	NPU not installed	S2/1	On
	NPU installed	S2/1	Off
	Floppy drives installed 1	S2/2	On
	Floppy drives installed 2	S2/2	Off

DRAM CONFIGURATION
Size	Bank 0	Bank 1	Bank 2	Bank 3
128KB	(16) 4164	None	None	None
256KB	(16) 4164	(16) 4164	None	None
384KB	(16) 4164	(16) 4164	(16) 4164	None
512KB	(16) 4164	(16) 4164	(16) 4164	(16) 4164
Note: The location of banks 0, 1, 2 & 3 are unidentified.

DRAM SWITCH CONFIGURATION
Size	S2/5	S2/6
128KB	On	On
256KB	Off	On
384KB	Off	Off
512KB	Off	Off

MONITOR SELECTION
Setting	S2/3	S2/4
None	On	On
Color (40 x 25)	Off	On
Color (80 x 25)	On	Off
Monochrome	Off	Off