80486AT (Ver. 1.0) Motherboard Settings and Configuration

Processor	80486DX
Processor Speed	25/33MHz
Chip Set	None
Max. Onboard DRAM	16MB
SRAM Cache	64/256KB
BIOS	AMI
Dimensions	355mm x 304mm
I/O Options	None
NPU Options	4167

CONNECTIONS
Purpose	Location	Purpose	Location
Reset switch	W1	Power LED & keylock	W5
Turbo switch	W3	Speaker	W10
Turbo LED	W4	External battery	W11

DRAM CONFIGURATION
Size	Bank 0	Bank 1	Bank 2	Bank 3
1MB	(4) 256K x 9	NONE	NONE	NONE
2MB	(4) 256K x 9	(4) 256K x 9	NONE	NONE
3MB	(4) 256K x 9	(4) 256K x 9	(4) 256K x 9	NONE
4MB	(4) 256K x 9	(4) 256K x 9	(4) 256K x 9	(4) 256K x 9
4MB	(4) 1M x 9	NONE	NONE	NONE
5MB	(4) 256K x 9	(4) 1M x 9	NONE	NONE
6MB	(4) 256K x 9	(4) 256K x 9	(4) 1M x 9	NONE
7MB	(4) 256K x 9	(4) 256K x 9	(4) 256K x 9	(4) 1M x 9
8MB	(4) 1M x 9	(4) 1M x 9	NONE	NONE
9MB	(4) 256K x 9	(4) 1M x 9	(4) 1M x 9	NONE
10MB	(4) 256K x 9	(4) 256K x 9	(4) 1M x 9	(4) 1M x 9
12MB	(4) 1M x 9	(4) 1M x 9	(4) 1M x 9	NONE
13MB	(4) 256K x 9	(4) 1M x 9	(4) 1M x 9	(4) 1M x 9
16MB	(4) 1M x 9	(4) 1M x 9	(4) 1M x 9	(4) 1M x 9

CPU SWITCH (SW2) CONFIGURATION
Size	SW2/switch 1	SW2/switch 2	SW2/switch 3	SW2/switch 4
1MB	open	open	open	open
2MB	closed	open	open	open
3MB	open	closed	open	open
4MB	closed	closed	open	open
4MB	open	open	closed	open
5MB	open	open	closed	closed
6MB	open	closed	open	closed
7MB	closed	open	open	closed
8MB	closed	open	closed	open
9MB	open	closed	closed	closed
10MB	closed	closed	open	closed
12MB	open	closed	closed	open
13MB	closed	closed	closed	closed
16MB	closed	closed	closed	open

SRAM JUMPER CONFIGURATION
Size	Jumper W6	Jumper W8	Jumper W9
64KB	pins 1 & 2 closed	pins 1 & 2 closed	pins 1 & 2 closed
256KB	pins 1 & 2 closed	pins 2 & 3 closed	pins 2 & 3 closed

SRAM CONFIGURATION
Size	Bank 0	TAG
64KB	(8) 8K x 8	(2) 16K x 4
256KB	(8) 32K x 8	(2) 16K x 4