BEK-V429 Motherboard Settings and Configuration

Processor	CX486M6/SL80486SX/80486SX/CX486M7/SL80486DX/80486DX/SL80486DX/80486DX2/80486DX4/P24D/Pentium Overdrive
Processor Speed	25/33/40/50(internal)/50/66(internal)/75(internal)/100(internal)MHz
Chip Set	OPTI
Max. Onboard DRAM	128MB
Cache	64/128/256KB
BIOS	Award
Dimensions	330mm x 218mm
I/O Options	32-bit VESA local bus slots (3), green PC connector
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
External battery	J2	Speaker	JP38
Green PC connector	JP6	Green PC connector (monitor)	JP39
Power LED & keylock	JP22	Green PC connector LED	JP41
Turbo LED	JP34	Reset switch	S1
Turbo switch	JP36	32-bit VESA local bus slots	SL1 - SL3

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	Monitor type select color	JP1	Closed
	Monitor type select monochrome	JP1	Open
»	CMOS memory normal operation	JP2	pins 2 & 3 closed
	CMOS memory clear	JP2	pins 1 & 2 closed
	Battery type select external	JP2	Open
»	Factory configured - do not alter	JP7	Closed
»	Factory configured - do not alter	JP30	N/A
»	Factory configured - do not alter	JP31	pins 2 & 3 closed
»	LRDY wait state select 0 wait states	JP33	pins 2 & 3 closed
	LRDY wait state select 1 wait state	JP33	pins 1 & 2 closed
»	Factory configured - do not alter	JP40	pins 1 & 2, 3 & 4 closed

DRAM CONFIGURATION
Size	Bank 0	Bank 1	Bank 2	Bank 3
1MB	(4) 256K x 9	NONE	NONE	NONE
1MB	NONE	(1) 256K x 36	NONE	NONE
2MB	(4) 256K x 9	(1) 256K x 36	NONE	NONE
4MB	(4) 1M x 9	NONE	NONE	NONE
4MB	(4) 256K x 9	(1) 256K x 36	(1) 256K x 36	(1) 256K x 36
4MB	NONE	(1) 1M x 36	NONE	NONE
5MB	(4) 256K x 9	(1) 1M x 36	NONE	NONE
6MB	(4) 256K x 9	(1) 256K x 36	(1) 1M x 36	NONE
8MB	(4) 1M x 9	(1) 1M x 36	NONE	NONE
8MB	(4) 1M x 9	NONE	(1) 1M x 36	NONE
8MB	NONE	(1) 1M x 36	(1) 1M x 36	NONE
10MB	(4) 256K x 9	(1) 256K x 36	(1) 1M x 36	(1) 1M x 36
12MB	(4) 1M x 9	NONE	(1) 1M x 36	(1) 1M x 36
12MB	NONE	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36
16MB	(4) 4M x 9	NONE	NONE	NONE
16MB	(4) 1M x 9	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36
16MB	NONE	(1) 4M x 36	NONE	NONE
17MB	(4) 256K x 9	(1) 4M x 36	NONE	NONE
20MB	(4) 1M x 9	(1) 4M x 36	NONE	NONE
20MB	(4) 1M x 9	NONE	(1) 4M x 36	NONE
20MB	NONE	(1) 1M x 36	(1) 4M x 36	NONE
32MB	(4) 4M x 9	(1) 4M x 36	NONE	NONE
32MB	(4) 4M x 9	NONE	(1) 4M x 36	NONE
32MB	NONE	(1) 4M x 36	(1) 4M x 36	NONE
64MB	(4) 16M x 9	NONE	NONE	NONE
64MB	(4) 4M x 9	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36
64MB	NONE	(1) 16M x 36	NONE	NONE
128MB	(4) 16M x 9	(1) 16M x 36	NONE	NONE
128MB	(4) 16M x 9	NONE	(1) 16M x 36	NONE
128MB	NONE	(1) 16M x 36	(1) 16M x 36	NONE

DRAM JUMPER CONFIGURATION
Size	JP5
1MB	pins 2 & 3 closed
1MB	pins 1 & 2 closed
2MB	pins 2 & 3 closed
4MB	pins 2 & 3 closed
4MB	pins 2 & 3 closed
4MB	pins 1 & 2 closed
5MB	pins 2 & 3 closed
6MB	pins 2 & 3 closed
8MB	pins 2 & 3 closed
8MB	pins 2 & 3 closed
8MB	pins 1 & 2 closed
10MB	pins 2 & 3 closed
12MB	pins 2 & 3 closed
12MB	pins 1 & 2 closed
16MB	pins 2 & 3 closed
16MB	pins 2 & 3 closed
16MB	pins 1 & 2 closed
17MB	pins 2 & 3 closed
20MB	pins 2 & 3 closed
20MB	pins 2 & 3 closed
20MB	pins 1 & 2 closed
32MB	pins 2 & 3 closed
32MB	pins 2 & 3 closed
32MB	pins 1 & 2 closed
64MB	pins 2 & 3 closed
64MB	pins 2 & 3 closed
64MB	pins 1 & 2 closed
128MB	pins 2 & 3 closed
128MB	pins 2 & 3 closed
128MB	pins 1 & 2 closed

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) 16K x 8 or (1) 32K x 8

CACHE JUMPER CONFIGURATION
Size	JP8	JP27	JP28
64KB	pins 2 & 3 closed	Open	Open
128KB	pins 1 & 2 closed	Closed	Open
256KB	pins 2 & 3 closed	Closed	Closed

CACHE TAG JUMPER CONFIGURATION
Size	JP26
8K x 8	pins 1 & 2 closed
16K x 8	pins 2 & 3 closed
32K x 8	pins 1 & 2 closed

CPU TYPE CONFIGURATION
Type	JP9	JP10	JP11	JP12	JP13
CX486M6	Closed	Open	1 & 2	2 & 3	Open
SL80486SX	Open	Closed	1 & 2	1 & 2	Open
80486SX	Open	Open	1 & 2	1 & 2	Open
CX486M7 (1x)	Closed	Open	2 & 3	2 & 3	1 & 2
CX486M7 (2x)	Closed	Open	2 & 3	2 & 3	1 & 2
SL80486DX	Open	Closed	1 & 2	1 & 2	1 & 2
80486DX	Open	Open	1 & 2	1 & 2	1 & 2
SL80486DX2	Open	Closed	1 & 2	1 & 2	1 & 2
80486DX2	Open	Open	1 & 2	1 & 2	1 & 2
80486DX4	Open	Closed	1 & 2	1 & 2	1 & 2
P24D (WB)	Open	Closed	2 & 3	1 & 2	1 & 2
P24D (WT)	Open	Closed	2 & 3	1 & 2	1 & 2
P24T	Open	Closed	2 & 3	1 & 2	1 & 2
Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION (CON’T)
Type	JP15	JP19	JP20	JP21	JP22
CX486M6	Open	Open	Open	Open	Open
SL80486SX	Open	Open	Closed	Closed	Open
80486SX	Open	Open	Open	Open	Open
CX486M7 (1x)	Open	Open	Open	Open	Closed
CX486M7 (2x)	Open	Open	Open	Open	Closed
SL80486DX	Open	Open	Closed	Closed	Open
80486DX	Open	Open	Open	Open	Open
SL80486DX2	Open	Open	Closed	Closed	Open
80486DX2	Open	Open	Open	Open	Open
80486DX4	Open	Open	Closed	Closed	Open
P24D (WB)	Closed	1 & 2	Closed	Closed	Open
P24D (WT)	Closed	2 & 3	Closed	Closed	Open
P24T	Closed	Open	Closed	Closed	Open
Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION (CON’T)
Type	JP23	JP29	JP32
CX486M6	pins 2 & 3 closed	pins 1 & 3, 2 & 4 closed	pins 1 & 2 closed
SL80486SX	pins 2 & 3 closed	pins 1 & 3, 2 & 4 closed	Open
80486SX	pins 2 & 3 closed	pins 1 & 3, 2 & 4 closed	Open
CX486M7 (1x)	pins 1 & 2, 3 & 4 closed	pins 1 & 3, 2 & 4 closed	Open
CX486M7 (2x)	pins 1 & 2, 3 & 4 closed	pins 1 & 3, 2 & 4 closed	Open
SL80486DX	pins 1 & 2, 3 & 4 closed	pins 1 & 3, 2 & 4 closed	Open
80486DX	pins 1 & 2, 3 & 4 closed	pins 1 & 3, 2 & 4 closed	Open
SL80486DX2	pins 1 & 2, 3 & 4 closed	pins 1 & 3, 2 & 4 closed	Open
80486DX2	pins 1 & 2, 3 & 4 closed	pins 1 & 3, 2 & 4 closed	Open
80486DX4	pins 1 & 2, 3 & 4 closed	pins 3 & 5, 4 & 6 closed	Open
P24D (WB)	pins 1 & 2, 3 & 4 closed	pins 1 & 3, 2 & 4 closed	pins 2 & 3 closed
P24D (WT)	pins 1 & 2, 3 & 4 closed	pins 1 & 3, 2 & 4 closed	pins 2 & 3 closed
P24T	pins 1 & 2, 3 & 4 closed	pins 1 & 3, 2 & 4 closed	pins 2 & 3 closed

CPU SPEED CONFIGURATION
Speed	JP17	JP18
25MHz	Open	Open
33MHz	Closed	Closed
40MHz	Closed	Open
50iMHz	Open	Open
50MHz	Open	Closed
66iMHz	Closed	Closed
75iMHz	Open	Open
100iMHz	Closed	Closed

VESA WAIT STATE CONFIGURATION
Wait states	JP35
0 wait states	Open
1 wait state	Closed
Note: The location of JP35 is unidentified.

BUS SPEED CONFIGURATION
CPU speed	JP37
<= 33MHz	Open
> 33MHz	Closed
Note: The location of JP37 is unidentified.