SA 486P AIO Motherboard Settings and Configuration

ELITEGROUP COMPUTER SYSTEMS, INC.

SA 486P AIO

Processor	80486SX/80487SX/80486DX/80486DX2/Pentium Overdrive
Processor Speed	25/33/50(internal)/66(internal)MHz
Chip Set	Intel
Max. Onboard DRAM	128MB
Cache	128/256KB
BIOS	Phoenix
Dimensions	330mm x 218mm
I/O Options	32-bit PCI local bus slots (3), floppy drive interface, IDE interface, parallel port, serial ports (2), SCSI drive interface
NPU Options	None

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	Parallel port IRQ7	JP13	pins 2 & 3 closed
	Parallel port IRQ5	JP13	pins 1 & 2 closed
»	Flash BIOS write protect enabled	JP19	pins 1 & 2 closed
	Flash BIOS write protect disabled	JP19	pins 2 & 3 closed
»	Factory configured - do not alter	JP26	N/A
»	ODP586SX write back mode enabled	JP27	Closed
	ODP586SX write back mode disabled	JP27	Open
»	Factory configured - do not alter	JP28	pins 2 & 3 closed
»	Factory configured - do not alter	JP29	Closed
»	On board SCSI termination enabled	JP34	Closed
	On board SCSI termination disabled	JP34	Open
»	Factory configured - do not alter	JP42	Closed
»	Factory configured - do not alter	JP43	N/A
»	Factory configured - do not alter	JP44	N/A
»	Factory configured - do not alter	JP45	N/A
»	Factory configured - do not alter	JP46	N/A
»	Factory configured - do not alter	JP47	N/A
»	Factory configured - do not alter	JP48	pins 2 & 3 closed

CACHE JUMPER CONFIGURATION
Size	JP4	JP5	JP6	JP7	JP9	JP10	JP21	JP22
128KB	2 & 3	1 & 2	1 & 2	2 & 3	2 & 3	2 & 3	Open	Open
256KB	1 & 2	2 & 3	1 & 2	2 & 3	2 & 3	2 & 3	Closed	Closed
Note:Pins designated should be in the closed position.

CPU TYPE CONFIGURATION
CPU	Socket	JP23	JP24	JP25	JP51
80486SX	PGA	pins 2 & 3	Closed	pins 2 & 3	Closed
80486SX	PQFP	N/A	Open	pins 2 & 3	Closed
80487SX	PGA	pins 1 & 2	Closed	1 & 2 and 3 & 4	Closed
80486DX	PGA	pins 3 & 4	Closed	1 & 2 and 3 & 4	Closed
80486DX2	PGA	pins 3 & 4	Closed	1 & 2 and 3 & 4	Closed
Pentium Overdrive	PGA	pins 1 & 2	Closed	1 & 2 and 3 & 4	Open
Note:Pins designated should be in the closed position.

CPU SPEED CONFIGURATION
Speed	JP1	JP2	JP3	JP17	JP18
25MHz	Closed	Open	Closed	pins 2 & 3	pins 2 & 3
33MHz	Open	Open	Closed	pins 2 & 3	pins 1 & 2
50i MHz	Closed	Open	Closed	pins 2 & 3	pins 2 & 3
66i MHz	Open	Open	Closed	pins 2 & 3	pins 1 & 2
Note:Pins designated should be in the closed position.

PCI BUS INTERRUPT SELECT
Setting		JP14	JP15	JP16
»	IRQ 15	Pins 1 & 2 closed	Pins 1 & 2 closed	Pins 1 & 2 closed
	IRQ 10	Pins 1 & 2 closed	Pins 1 & 2 closed	Pins 1 & 2 closed
	IRQ 11	Pins 1 & 2 closed	Pins 1 & 2 closed	Pins 1 & 2 closed
	None	Pins 1 & 2 closed	Pins 1 & 2 closed	Pins 1 & 2 closed
Note: IRQ14 is hardwired for IDE interface. If using an interrupt that cannot be shared with other devices, JP14, JP15, and JP16 should be set on pins 2 & 3 closed.