486-33 Motherboard Settings and Configuration

Processor	80486SX
Processor Speed	33MHz
Chip Set	Unidentified
Video Chip Set	None
Maximum Onboard Memory	16MB (8MB on external memory card)
Maximum Video Memory	None
Cache	64/256KB
BIOS	AMI
Dimensions	355mm x 304mm
I/O Options	External memory card
NPU Options	4167

CONNECTIONS
Purpose	Location	Purpose	Location
External battery	J1	Speaker	J5
Front panel connector	J4	External memory card	SL1

USER CONFIGURABLE SETTINGS
Function		Label	Position
»	Factory configured - do not alter	J6	Unidentified
»	Factory configured - do not alter	J8	Unidentified
»	Factory configured - do not alter	J9	Unidentified
»	Factory configured - do not alter	J10	Unidentified
»	Factory configured - do not alter	SW2	Unidentified
»	Factory configured - do not alter	SW3	Unidentified
»	Factory configured - do not alter	W1	Open
»	Factory configured - do not alter	W4	Pins 2 & 3 closed
»	Factory configured - do not alter	W5	Pins 1 & 2 closed
»	Monitor type select color	W7	Pins 1 & 2 closed
	Monitor type select monochrome	W7	Pins 2 & 3 closed
»	Speaker enabled	W10	Closed
	Speaker disabled	W10	Open

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
4MB	(4) 1M x 9	None	None	None
6MB	(4) 256K x 9	(4) 256K x 9	(4) 1M x 9	None
8MB	(4) 1M x 9	(4) 1M x 9	None	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
16MB	(4) 1M x 9	(4) 1M x 9	(4) 1M x 9	(4) 1M x 9
Note: Banks 2 & 3 are located on the external memory card.

DRAM SWITCH CONFIGURATION
Size	SW1/1	SW1/2	SW1/3	SW1/4
1MB	On	Off	On	On
2MB	Off	Off	On	Off
4MB	On	On	On	On
6MB	Off	Off	Off	On
8MB	Off	On	On	Off
10MB	Off	Off	Off	Off
12MB	Off	On	Off	On
16MB	Off	On	Off	Off

DRAM JUMPER CONFIGURATION
SIMM in Bank 0	SIMM in Bank 1	W8	W9
256KB	N/A	N/A	Pins 2 & 3 closed
1MB	N/A	N/A	Pins 1 & 2 closed
N/A	256KB	Pins 2 & 3 closed	N/A
N/A	1MB	Pins 1 & 2 closed	N/A

CACHE CONFIGURATION
Size	Bank 0	TAG
64KB	(10) 16K x 4	(1) 16K x 1
256KB	(10) 64K x 4	(1) 64K x 1

CACHE JUMPER CONFIGURATION
Size	W2	W3
64KB	Pins 1 & 2 closed	Pins 1 & 2 closed
256KB	Pins 2 & 3 closed	Pins 2 & 3 closed

CPU SPEED SELECTION
Speed	W6
8MHz (only)	Pins 1 & 2 closed
33MHz (only)	Open
33MHz (switchable)	Pins 2 & 3 closed

USER CONFIGURABLE SETTINGS
Function		Label	Position
»	Factory configured - do not alter	SW1/4	N/A
»	Factory configured - do not alter	W1	Pins 1 & 2 closed
»	Factory configured - do not alter	W2	Pins 1 & 2 closed

DRAM SWITCH CONFIGURATION
Memory upgrade	Bank 2	Bank 3	SW1/1	SW1/2	SW1/3
4MB	4MB	None	Off	Off	On
8MB	4MB	4MB	Off	Off	Off

DRAM SWITCH CONFIGURATION
DRAM on mainboard	SW2/1	SW2/2	SW2/3	SW2/4	SW2/5	SW2/6	SW2/7	SW2/8
4MB	On	Off	Off	On	Off	Off	On	On
8MB	On	On	Off	Off	Off	Off	On	On