Processor	CX486M6/80486SX/CX486S2/SL80486SX/CX486M7/80486DX/SL80486DX/ 80486DX2/SL80486DX2/P24D/Pentium Overdrive
Processor Speed	20/25/33/40/50(internal)/50/66(internal)MHz
Chip Set	Unidentified
Max. Onboard DRAM	128MB
Cache	128/256/512KB
BIOS	Award
Dimensions	250mm x 220mm
I/O Options	32-bit VESA local bus slots (3), green PC connector
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
Turbo switch	J3 pins 3 & 4	Power LED & keylock	J7
Turbo LED	J4	Green PC connector	JP26
Speaker	J5	32-bit VESA local bus slots	SL1 - SL3
Reset switch	J6

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	Turbo switch enabled	J3	pins 3 & 4 closed
	Turbo switch disabled	J3	pins 4 & 5 closed
»	CMOS memory normal operation	JP16	pins 2 & 3 closed
	CMOS memory clear	JP16	pins 1 & 2 closed
»	Monitor type select monochrome/EGA/VGA	JP17	Open
	Monitor type select CGA	JP17	Closed
»	CPU type select any CPU installed	JP18	Open
	CPU type select CX486S2 only	JP18	Closed
»	Factory configured - do not alter	JP19	pins 1 & 2 closed
»	CPU clock delay select CLKIN delays CPUCLK	JP20	pins 2 & 3 closed
	CPU clock delay select CLKIN = CPUCLK	JP20	pins 1 & 2 closed
»	Factory configured - do not alter	JP23	pins 1 & 2 closed
»	Factory configured - do not alter	JP27	Open
»	Factory configured - do not alter	JP32	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
17MB	(4) 256K x 9	(4) 4M x 9
20MB	(4) 1M x 9	(4) 4M x 9
32MB	(4) 4M x 9	(4) 4M x 9
64MB	(4) 16M x 9	NONE
65MB	(4) 256K x 9	(4) 16M x 9
68MB	(4) 1M x 9	(4) 16M x 9
80MB	(4) 4M x 9	(4) 16M x 9
128MB	(4) 16M x 9	(4) 16M x 9

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
512KB	(4) 128K x 8	NONE	(1) 32K x 8

CACHE JUMPER CONFIGURATION
Size	JP1	JP2	JP3	JP4
128KB	1 & 2	1 & 2	1 & 2, 3 & 4	1 & 2
256KB	2 & 3	2 & 3	2 & 3, 4 & 5	1 & 2
512KB	1 & 2	2 & 3	1 & 2, 3 & 4	2 & 3
Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION
Type	JP8	JP9	JP10	JP11	JP12
CX486M6	2 & 3	Closed	2 & 3	Open	2 & 3, 4 & 5
80486SX	2 & 3	Open	2 & 3	Open	Open
SL80486SX	2 & 3	Open	2 & 3	Open	3 & 4
CX486M7	1 & 2	Closed	2 & 3	2 & 3	2 & 3
80486DX	1 & 2	Closed	2 & 3	2 & 3	Open
SL80486DX	1 & 2	Closed	2 & 3	2 & 3	3 & 4
80486DX2	1 & 2	Closed	2 & 3	2 & 3	Open
SL80486DX2	1 & 2	Closed	2 & 3	2 & 3	3 & 4
P24D	1 & 2	Closed	1 & 2	2 & 3	1 & 2, 3 & 4
P24T	1 & 2	Closed	1 & 2	1 & 2	3 & 4
Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION (CON’T)
Type	JP13	JP14	JP15	JP21
CX486M6	Open	1 & 2, 3 & 4	2 & 3	1 & 2
80486SX	Open	Open	Open	2 & 3
SL80486SX	1 & 2	2 & 3	4 & 5	2 & 3
CX486M7	Open	1 & 2, 3 & 4	2 & 3	1 & 2
80486DX	Open	Open	Open	2 & 3
SL80486DX	1 & 2	2 & 3	4 & 5	2 & 3
80486DX2	Open	Open	Open	2 & 3
SL80486DX2	1 & 2	2 & 3	4 & 5	2 & 3
P24D	2 & 3	2 & 3	4 & 5	2 & 3
P24T	Open	2 & 3	1 & 2	1 & 2
Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION (CON’T)
Type	JP22	JP24	JP25	JP30	JP31
CX486M6	2 & 3	2 & 3	2 & 3	Open	Open
80486SX	1 & 2	Open	Open	Open	Open
SL80486SX	1 & 2	Open	Open	Open	Open
CX486M7	2 & 3	2 & 3	2 & 3	Open	Open
80486DX	1 & 2	Open	Open	Open	Open
SL80486DX	1 & 2	Open	Open	Open	Open
80486DX2	1 & 2	Open	Open	Open	Open
SL80486DX2	1 & 2	Open	Open	Open	Open
P24D	1 & 2	Open	1 & 2	Closed	Closed
P24T	1 & 2	1 & 2	1 & 2	Open	Open
Note: Pins designated should be in the closed position.

CPU SPEED CONFIGURATION
Speed	JP5	JP6	JP7
20MHz	Open	Open	Open
25MHz	Open	Closed	Open
33MHz	Closed	Closed	Closed
40MHz	Open	Closed	Closed
50iMHz	Open	Closed	Open
50MHz	Closed	Open	Open
66iMHz	Closed	Closed	Closed

VL BUS WAIT STATE CONFIGURATION
» Wait states		JP28
»	0 wait states	pins 1 & 2 closed
»	1 wait state	pins 2 & 3 closed

VL BUS SPEED CONFIGURATION
CPU speed	JP29
<= 33MHz	pins 1 & 2 closed
> 33MHz	pins 2 & 3 closed