SOTA386SI Motherboard Settings and Configuration

Card Type	Processor upgrade
Processor	8088/8086/80386SX
Processor Speed	16MHz
Chipset	N/A
Maximum Onboard Memory	None
Data Bus	8-bit ISA
Cache	16/64KB
BIOS	N/A
Dimensions	170 x 110mm
I/O Options	None
NPU Options	80387SX

CONNECTIONS
Function	Label
Ribbon cable to mainboard 808x socket	CN1

USER CONFIGURABLE SETTINGS
Function		Label	Position
»	Factory configured - do not alter	JP5/A	Closed
»	NPU not installed	JP5/B	Open
	NPU installed	JP5/B	Closed
»	Factory configured - do not alter	JP5/C	Open
»	Factory configured - do not alter	JP5/D	Open
»	Use 80386SX processor	SW1	Off
	Fall back to 808x processor	SW1	On

CACHE CONFIGURATION
Setting	Bank 0	TAG
16KB	(2) 8K x 8	Unidentified
64KB	(2) 32K x 8	(1) 32K x 8

CACHE JUMPER CONFIGURATION
Setting		JP2/E
»	16KB	Open
	64KB	Closed

MAINBOARD PROCESSOR TYPE
Setting		JP2/C	JP2/D	U17	U18
»	8088	Open	Open	74LS646	Not installed
	Standard 8086	Closed	Closed	Not installed	74LS646
	AT&T 6300, Olivetti 8086	Open	Open	Not installed	74LS646

CACHE ENABLE CONFIGURATION
Setting		JP2/A	JP2/B
»	Cache enabled by software only	Open	Closed
	Cache enabled 5 seconds after power-up	Closed	Open
	Cache enabled 50 seconds after power-up	Open	Open

MISCELLANEOUS TECHNICAL NOTE

The mainboard’s 808x chip should be installed in the card’s 808x-type socket. A ribbon cable from CN1 then is installed in the mainboard’s 808x socket.