POWERSOUND 486I Motherboard Settings and Configuration

Processor	80486SX/80486DX/80486DX2
Processor Speed	25/33/50(Internal)/66(Internal)MHz
Chip Set	OPTI
Max. onboard DRAM	32MB
SRAM Cache	None
BIOS	AMI/MR
Dimensions	330mm x 218mm
I/O Options	Line in, microphone in, volume control, and speaker out (controlled by onboard ES488, a Sound Blaster Pro compatible sound processor.)
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
External battery	JP1	Speaker out	CN1
Turbo Switch	JP6	Volume	CN2
Speaker	JP9	Line in	CN3
Power LED and keylock	JP10	Microphone in	CN4
Turbo LED	JP12	Reset switch	SW1

USER CONFIGURABLE SETTINGS
Function		Jumper/Switch	Position
»	Monitor type select color	JP2	Closed
	Monitor type select monochrome	JP2	Open

ONBOARD SOUND SYSTEM DMA CONFIGURATION
DMA		JP7	JP8
»	DMA1	Pins 1 & 2 closed	Pins 1 & 2 closed
	DMA3	Pins 3 & 4 closed	Pins 3 & 4 closed

ONBOARD SOUND SYSTEM INTERRUPT CONFIGURATION
Interrupt		JP11
	IRQ3	Pins 1 & 2 closed
	IRQ5	Pins 3 & 4 closed
»	IRQ7	Pins 5 & 6 closed
	IRQ9	Pins 7 & 8 closed

DRAM CONFIGURATION
Size	Bank 0	Bank 1
1MB	(4) 256K x 9	NONE
2MB	(4) 256K x 9	(4) 256K x 9
4MB	(4) 1M x 9	NONE
5MB	(4) 256K x 9	(4) 1M x 9
8MB	(4) 1M x 9	(4) 1M x 9
16MB	(4) 4M x 9	NONE
20MB	(4) 1M x 9	(4) 4M x 9
32MB	(4) 4M x 9	(4) 4M x 9

CPU TYPE AND SPEED CONFIGURATIONS
Type	CPU Speed	OSC	JP3	JP4	JP5
80486SX	25MHz	25MHz	Open	Pins 2 & 3 closed	Open
80487SX	25MHz	25MHz	Pins 2 & 3 closed	Pins 1 & 2 closed	Closed
80486DX	33MHz	33MHz	Pins 1 & 2 closed	Pins 1 & 2 closed	Closed
80486DX2	50i MHz	25MHz	Pins 2 & 3 closed	Pins 1 & 2 closed	Closed
80486DX2	66i MHz	33MHz	Pins 1 & 2 closed	Pins 1 & 2 closed	Closed