Processor	80486SX/80487SX/80486DX/ODP486SX/80486DX2/Pentium Overdrive
Processor Speed	25/33/40/50(internal)/50/66(internal)MHz
Chip Set	Contaq
Max. Onboard DRAM	32MB
Cache	64/128/256KB
BIOS	AMI
Dimensions	260mm x 220mm
I/O Options	32-bit VESA local bus slots (2)
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
Auxiliary keyboard connector	J2	Turbo LED	J5 pins 12 & 13
External battery	J4	Turbo switch	J5 pins 15 - 17
Power LED & keylock	J5 pins 1 - 5	Reset switch	J5 pins 19 & 20
Speaker	J5 pins 7 - 10	32-bit VESA local bus slots	SL1 & SL2

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	Battery type select internal	J4	pins 2 & 3 closed
	Battery type select external	J4	Closed
»	Monitor type select monochrome	JP17	Open
	Monitor type select color	JP17	Closed
»	Factory configured - do not alter	JP23	pins 1 & 2 closed
»	Factory configured - do not alter	JP26	pins 1 & 2 closed
»	Factory configured - do not alter	JP37	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
5MB	(4) 1M x 9	(4) 256K x 9
8MB	(4) 1M x 9	(4) 1M x 9
16MB	(4) 4M x 9	NONE
17MB	(4) 4M x 9	(4) 256K x 9
17MB	(4) 256K x 9	(4) 4M x 9
20MB	(4) 1M x 9	(4) 4M x 9
20MB	(4) 4M x 9	(4) 1M x 9
32MB	(4) 4M x 9	(4) 4M x 9

CACHE CONFIGURATION
Size	Bank 0	Bank 1	TAG
64KB	(4) 8K x 8	(4) 8K x 8	(1) 8K x 8
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	JP1	JP6	JP7
64KB	pins 1 & 2 closed	pins 2 & 3 closed	pins 2 & 3 closed
128KB	pins 2 & 3 closed	pins 1 & 2 closed	pins 2 & 3 closed
256KB	pins 4 & 5 closed	pins 1 & 2 closed	pins 1 & 2 closed

CPU TYPE CONFIGURATION
Type	JP31	JP32	JP33
80486SX (PQFP)	Open	Open	pins 1 & 2 closed
80486SX (PGA)	pins 3 & 4 closed	Open	pins 2 & 3, 4 & 5 closed
ODP486SX	pins 2 & 3, 4 & 5 closed	pins 1 & 2 closed	pins 2 & 3, 4 & 5 closed
80487SX	pins 2 & 3, 4 & 5 closed	pins 1 & 2 closed	pins 2 & 3, 4 & 5 closed
80486DX (PQFP)	pins 1 & 2 closed	pins 4 & 5 closed	pins 1 & 2 closed
80486DX (PGA)	pins 2 & 3, 4 & 5 closed	pins 2 & 3 closed	pins 2 & 3, 4 & 5 closed
80486DX2	pins 2 & 3, 4 & 5 closed	pins 2 & 3 closed	pins 2 & 3, 4 & 5 closed
Pentium Overdrive	pins 2 & 3, 4 & 5 closed	pins 1 & 2 closed	pins 2 & 3, 4 & 5 closed

CPU SPEED CONFIGURATION
Speed	JP12	JP13	JP14
25MHz	Open	Open	Closed
33MHz	Closed	Open	Open
40MHz	Closed	Closed	Open
50iMHz	Open	Open	Closed
50MHz	Open	Closed	Open
66iMHz	Closed	Open	Open

CPU CLOCK SPEED CONFIGURATION
Speed	JP8
20MHz	pins 2 & 3 closed
25MHz	pins 2 & 3 closed
33MHz	pins 1 & 2 closed

VESA WAIT STATE CONFIGURATION
Wait states	JP19
0 wait states	Open
1 wait state	Closed

BUS SPEED CONFIGURATION
CPU speed	JP20
<= 33MHz	Open
> 33MHz	Closed

VESA CARD CONFIGURATION
Type	JP18	JP22
Normal card installed	Closed	pins 1 & 2 closed
Weitek P9000 only	Open	pins 2 & 3 closed