INTERSYSTEM 386SX Motherboard Settings and Configuration

Processor	80386SX (exact location unidentified)
Processor Speed	16/20MHz
Chip Set	Unidentified
Max. Onboard DRAM	8MB
Cache	None
BIOS	Unidentified
Dimensions	330mm x 218mm
I/O Options	None
NPU Options	80387SX (exact location unidentified)

CONNECTIONS
Purpose	Location	Purpose	Location
External battery	J2	Speaker	J13
Reset switch	J11	Power LED & keylock	J14

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	Factory configured - do not alter	J12	N/A
»	Factory configured - do not alter	J15	N/A
»	Battery type select external	JP1	Open
	Battery type select internal	JP1	pins 1 & 2 closed
»	BIOS type select 27256	JP2	pins 2 & 3 closed
	BIOS type select 27128	JP2	pins 1 & 2 closed
»	Monitor type select color	JP4	Closed
	Monitor type select monochrome	JP4	Open
»	NPU disabled	JP7	Closed
	NPU enabled	JP7	Open
»	Pipeline mode enabled	JP8	Closed
	Pipeline mode disabled	JP8	Open
Note: NPU must be synchronous with CPU.

DRAM CONFIGURATION
Size	Bank 0	Bank 1	Bank 2	Bank 3
512KB	(2) 256K x 9	NONE	NONE	NONE
1MB	(2) 256K x 9	(2) 256K x 9	NONE	NONE
2MB	(2) 256K x 9	(2) 256K x 9	(2) 256K x 9	(2) 256K x 9
4MB	(2) 1M x 9	(2) 1M x 9	NONE	NONE
5MB	(2) 256K x 9	(2) 256K x 9	(2) 1M x 9	(2) 1M x 9
8MB	(2) 1M x 9	(2) 1M x 9	(2) 1M x 9	(2) 1M x 9
Note: Banks locations are unidentified and are labeled on the board in the following manner:
Bank 0: SIMM 4 & 8
Bank 1: SIMM 3 & 7
Bank 2: SIMM 2 & 6
Bank 3: SIMM 1 & 5