Processor	80486SX/80486DX/ODP486SX/80486DX2/80486DX4/Pentium Overdrive
Processor Speed	25/33/50(internal)/66(internal)/75(internal)/100(internal)MHz
Chip Set	Unidentified
Max. Onboard DRAM	64MB
Cache	128/256KB
BIOS	Unidentified
Dimensions	330mm x 218mm
I/O Options	32-bit VESA local bus slots (1), floppy drive interface, IDE interface, parallel port, PS/2 mouse port, serial ports (2), VGA feature connector, VGA port
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
VGA port	CN1	IDE interface	CN7
Parallel port	CN2	VGA feature connector	CN8
Serial port 2	CN3	Speaker	JP1
Serial port 1	CN4	LED connector	JP2
PS/2 mouse port	CN5	32-bit VESA local bus slot	SL1
Floppy drive interface	CN6

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	VGA feature connector disabled	J1	pins 1 & 2 closed
	VGA feature connector enabled	J1	pins 2 & 3 closed
»	IRQ9 type select VGA controller only	J2	pins 1 & 2 closed
	IRQ9 type select other uses	J2	pins 2 & 3 closed
»	IRQ12 type select mouse only	J2	pins 4 & 5 closed
	IRQ12 type select other uses	J2	pins 5 & 6 closed
»	Cache type select write back	J4	pins 1 & 2 closed
	Cache type select write through	J4	pins 2 & 3 closed
»	Password enabled	J8A	Closed
	Password disabled	J8A	Open
»	Factory configured - do not alter	J8B	Closed
»	Monitor type select monochrome	J8D	Open
	Monitor type select color	J8D	Closed
»	Factory configured - do not alter	J8E	Open
»	Flash BIOS write protect enabled	J8F	Closed
	Flash BIOS write protect disabled	J8F	Open
»	Floppy drive interface enabled	J8G	Closed
	Floppy drive interface disabled	J8G	Open
»	IDE interface enabled	J8H	Closed
	IDE interface disabled	J8H	Open
»	On board VGA controller enabled	J8I	Closed
	On board VGA controller disabled	J8I	Open

DRAM CONFIGURATION
Size	Bank 0	Bank 1	Bank 2	Bank 3
4MB	(1) 1M x 36	NONE	NONE	NONE
8MB	(1) 1M x 36	(1) 1M x 36	NONE	NONE
8MB	(1) 2M x 36	NONE	NONE	NONE
12MB	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36	NONE
12MB	(1) 2M x 36	(1) 1M x 36	NONE	NONE
16MB	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36
16MB	(1) 2M x 36	(1) 2M x 36	NONE	NONE
16MB	(1) 2M x 36	(1) 1M x 36	(1) 1M x 36	NONE
16MB	(1) 4M x 36	NONE	NONE	NONE
20MB	(1) 2M x 36	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36
20MB	(1) 2M x 36	(1) 2M x 36	(1) 1M x 36	NONE
20MB	(1) 4M x 36	(1) 1M x 36	NONE	NONE
24MB	(1) 2M x 36	(1) 2M x 36	(1) 2M x 36	NONE
24MB	(1) 2M x 36	(1) 2M x 36	(1) 1M x 36	(1) 1M x 36
24MB	(1) 2M x 36	(1) 2M x 36	(1) 2M x 36	NONE
24MB	(1) 4M x 36	(1) 1M x 36	(1) 1M x 36	NONE
28MB	(1) 2M x 36	(1) 2M x 36	(1) 2M x 36	(1) 1M x 36
28MB	(1) 4M x 36	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36

DRAM CONFIGURATION (CON’T)
Size	Bank 0	Bank 1	Bank 2	Bank 3
28MB	(1) 4M x 36	(1) 2M x 36	(1) 1M x 36	NONE
32MB	(1) 4M x 36	(1) 4M x 36	NONE	NONE
32MB	(1) 4M x 36	(1) 2M x 36	(1) 1M x 36	(1) 1M x 36
32MB	(1) 4M x 36	(1) 2M x 36	(1) 2M x 36	NONE
32MB	(1) 8M x 36	NONE	NONE	NONE
36MB	(1) 4M x 36	(1) 2M x 36	(1) 2M x 36	(1) 1M x 36
36MB	(1) 8M x 36	(1) 1M x 36	NONE	NONE
48MB	(1) 8M x 36	(1) 2M x 36	(1) 1M x 36	(1) 1M x 36
40MB	(1) 8M x 36	(1) 1M x 36	(1) 1M x 36	NONE
44MB	(1) 8M x 36	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36
44MB	(1) 8M x 36	(1) 2M x 36	(1) 1M x 36	NONE
48MB	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36	NONE
48MB	(1) 8M x 36	(1) 2M x 36	(1) 2M x 36	NONE
52MB	(1) 8M x 36	(1) 2M x 36	(1) 2M x 36	(1) 1M x 36
64MB	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36
64MB	(1) 8M x 36	(1) 8M x 36	NONE	NONE

CACHE CONFIGURATION
Size	Bank 0	Bank 1	TAG
128KB	(4) 32K x 8	NONE	(1) 8K x 8
256KB	(4) 32K x 8	(4) 32K x 8	(1) 32K x 8

CACHE JUMPER CONFIGURATION
Size	J6	J7
128KB	pins 2 & 3 closed	pins 2 & 3 closed
256KB	pins 1 & 2 closed	pins 1 & 2 closed

CPU TYPE CONFIGURATION
Type	J3
80486SX	pins 1 & 2 closed
ODP486SX	pins 1 & 2 closed
80486DX	pins 2 & 3 closed
80486DX2	pins 2 & 3 closed
80486DX4	pins 2 & 3 closed
Pentium Overdrive	pins 2 & 3 closed

CPU SPEED CONFIGURATION
Speed	J8C
25MHz	Open
33MHz	Closed
50iMHz	Open
66iMHz	Closed
75iMHz	Open
100iMHz	Closed

CPU VOLTAGE CONFIGURATION
Voltage	J5
3.3v	pins 2 & 3 closed
5v	pins 1 & 2 closed