AC 486 PGA Motherboard Settings and Configuration

Processor	80486SX/80487SX/80486DX/80486DX2
Processor Speed	16/20/25/33/50(internal)/66(internal)MHz
Chip Set	ACC
Video Chip Set	None
Maximum Onboard Memory	32MB
Maximum Video Memory	None
Cache	None
BIOS	AMI
Dimensions	254mm x 218mm
I/O Options	None
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
External battery	J1	Reset switch	J4
Turbo LED	J2	Speaker	J5
Turbo switch	J3	Power LED & keylock	J6

USER CONFIGURABLE SETTINGS
Function		Label	Position
	Monitor type select color	JP1	Pins 2 & 3 closed
	Monitor type select monochrome	JP1	Pins 1 & 2 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 SELECTION
Type	JP3	JP4	JP5
80486SX (primary)	N/A	Open	Pins 2 & 3 closed
80487SX (upgrade)	Pins 1 & 2 closed	Closed	N/A
80486DX (primary)	N/A	Open	Pins 1 & 2, 3 & 4 closed
80486DX (upgrade)	Pins 2 & 3 closed	Closed	N/A
80486DX2 (primary)	N/A	Open	Pins 1 & 2, 3 & 4 closed
80486DX2 (upgrade)	Pins 2 & 3 closed	Closed	N/A
Note: Primary CPU is CPU1 & upgrade CPU is CPU2.