MB-1425UIV, MB-1433UIV, MB-1440UIV, MB-1450UIV (VER. 01) Motherboard Settings and Configuration

BIOSTAR MICROTECH INTERNATIONAL, INC.

MB-1425UIV, MB-1433UIV, MB-1440UIV, MB-1450UIV (VER. 01)

Processor
CX486SXM6/80486SX/CX486M7/UMC486/AM486DXL/80486DX/ SL80486DX/80486DX/80486DX2/80486DX4/P24D/P24T
Processor Speed
25/33/40/50(internal)/50/66(internal)/75(internal)/100(internal)MHz
Chip Set
Unidentified
Video Chip Set
None
Maximum Onboard Memory
64MB
Maximum Video Memory
None
Cache
64/128/256KB
BIOS
AMI/Award
Dimensions
250mm x 220mm
I/O Options
32-bit VESA local bus slots (3)
NPU Options
None

CONNECTIONS
Purpose
Location
Purpose
Location
External battery
JP8
Turbo switch
JP15 pins 14 & 15
Speaker
JP15 pins 1 - 4
+5v ground
JP15 pins 17 & 18
Power LED & keylock
JP15 pins 5 - 9
Green PC LED
JP24
Turbo LED
JP15 pins 10 & 11
Green PC connector
JP25
Reset switch
JP15 pins 12 & 13
32-bit VESA local bus slots
SL1 - SL3

USER CONFIGURABLE SETTINGS
Function
Label
Position

Battery type select external
JP8
Closed

CMOS memory normal operation
JP8
Pins 2 & 3 closed

CMOS memory clear
JP8
Pins 3 & 4 closed

Jumper information unavailable
JP31
Unidentified

Jumper information unavailable
JP32
Unidentified

DRAM CONFIGURATION
Size
Bank 0
Bank 1
Bank 2
1MB
None
None
(4) 256K x 9
1MB
(1) 256K x 36
None
None
1MB
None
(1) 256K x 36
None
2MB
(1) 256K x 36
None
(4) 256K x 9
2MB
None
(1) 256K x 36
(4) 256K x 9
2MB
(1) 256K x 36
(1) 256K x 36
None
2MB
(1) 512K x 36
None
None
2MB
None
(1) 512K x 36
None
3MB
(1) 256K x 36
(1) 256K x 36
(4) 256K x 9
3MB
None
(1) 512K x 36
(4) 256K x 9
3MB
(1) 256K x 36
(1) 512K x 36
None
3MB
(1) 512K x 36
(1) 256K x 36
None
4MB
(1) 256K x 36
(1) 512K x 36
(4) 256K x 9
4MB
None
None
(4) 1M x 9
4MB
(1) 512K x 36
(1) 512K x 36
None
4MB
(1) 1M x 36
None
None
4MB
None
(1) 1M x 36
None
5MB
(1) 1M x 36
None
(4) 256K x 9
5MB
None
(1) 1M x 36
(4) 256K x 9
5MB
(1) 256K x 36
None
(4) 1M x 9
5MB
None
(1) 256K x 36
(4) 1M x 9
5MB
(1) 256K x 36
(1) 1M x 36
None
5MB
(1) 1M x 36
(1) 256K x 36
None
6MB
None
(1) 512K x 36
(4) 1M x 9

DRAM CONFIGURATION (CON’T)
Size
Bank 0
Bank 1
Bank 2
6MB
(1) 1M x 36
(1) 512K x 36
None
6MB
(1) 512K x 36
(1) 1M x 36
None
7MB
(1) 1M x 36
(1) 512K x 36
(4) 256K x 9
7MB
(1) 256K x 36
(1) 512K x 36
(4) 1M x 9
8MB
(1) 1M x 36
None
(4) 1M x 9
8MB
None
(1) 1M x 36
(4) 1M x 9
8MB
(1) 1M x 36
(1) 1M x 36
None
8MB
(1) 2M x 36
None
None
8MB
None
(1) 2M x 36
None
9MB
(1) 1M x 36
(1) 1M x 36
(4) 256K x 9
9MB
(1) 1M x 36
(1) 256K x 36
(4) 1M x 9
9MB
(1) 256K x 36
(1) 1M x 36
(4) 1M x 9
10MB
(1) 1M x 36
(1) 512K x 36
(4) 1M x 9
12MB
(1) 1M x 36
(1) 1M x 36
(4) 1M x 9
12MB
None
(1) 2M x 36
(4) 4M x 9
12MB
(1) 1M x 36
(1) 2M x 36
None
12MB
(1) 2M x 36
(1) 1M x 36
None
16MB
None
None
(4) 4M x 9
16MB
(1) 4M x 36
None
None
16MB
None
(1) 4M x 36
None
17MB
(1) 4M x 36
None
(4) 256K x 9
17MB
None
(1) 4M x 36
(4) 256K x 9
17MB
(1) 256K x 36
None
(4) 4M x 9
17MB
None
(1) 256K x 36
(4) 4M x 9
18MB
(1) 256K x 36
(1) 4M x 36
(4) 256K x 9
18MB
(1) 4M x 36
(1) 256K x 36
(4) 256K x 9
19MB
(1) 4M x 36
(1) 512K x 36
(4) 256K x 9
20MB
(1) 4M x 36
None
(4) 1M x 9
20MB
None
(1) 4M x 36
(4) 1M x 9
20MB
(1) 1M x 36
None
(4) 4M x 9
20MB
None
(1) 1M x 36
(4) 4M x 9
21MB
(1) 1M x 36
(1) 4M x 36
(4) 256K x 9
21MB
(1) 4M x 36
(1) 1M x 36
(4) 256K x 9
24MB
(1) 1M x 36
(1) 4M x 36
(4) 1M x 9
24MB
(1) 4M x 36
(1) 1M x 36
(4) 1M x 9
32MB
(1) 4M x 36
None
(4) 4M x 9
32MB
None
(1) 4M x 36
(4) 4M x 9
32MB
(1) 4M x 36
(1) 4M x 36
None
32MB
(1) 8M x 36
None
None
32MB
None
(1) 8M x 36
None

DRAM CONFIGURATION (CON’T)
Size
Bank 0
Bank 1
Bank 2
33MB
(1) 8M x 36
None
(4) 256K x 9
33MB
None
(1) 8M x 36
(4) 256K x 9
33MB
(1) 4M x 36
(1) 4M x 36
(4) 256K x 9
33MB
(1) 4M x 36
(1) 256K x 36
(4) 4M x 9
33MB
(1) 256K x 36
(1) 4M x 36
(4) 4M x 9
34MB
(1) 4M x 36
(1) 512K x 36
(4) 4M x 9
36MB
(1) 4M x 36
(1) 1M x 36
(4) 4M x 9
36MB
(1) 1M x 36
(1) 4M x 36
(4) 4M x 9
36MB
None
(1) 8M x 36
(4) 1M x 9
36MB
(1) 4M x 36
(1) 4M x 36
(4) 1M x 9
48MB
(1) 4M x 36
(1) 4M x 36
(4) 4M x 9
48MB
None
(1) 8M x 36
(4) 4M x 9
48MB
(1) 4M x 36
(1) 8M x 36
None
48MB
(1) 8M x 36
(1) 4M x 36
None
64MB
(1) 8M x 36
(1) 8M x 36
None

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 (A)
(4) 32K x 8
(4) 32K x 8
(1) 32K x 8
256KB (B)
(4) 64K x 8
None
(1) 32K x 8

CACHE JUMPER CONFIGURATION
Size
JP7
JP9
JP10
JP33
64KB
Open
Open
Pins 2 & 3 closed
Open
128KB
Open
Pins 1 & 2 closed
Pins 1 & 2 closed
Closed
256KB (A)
Closed
Pins 2 & 3 closed
Pins 2 & 3 closed
Closed
256KB (B)
Closed
Pins 1 & 2, 3 & 4 closed
Pins 1 & 2 closed
Closed

CPU SPEED SELECTION
Speed
JP4
JP5
JP6
25MHz
Open
Open
Closed
33MHz
Closed
Closed
Closed
40MHz
Open
Closed
Closed
50iMHz
Open
Open
Closed
50MHz
Closed
Open
Open
66iMHz
Closed
Closed
Closed
75iMHz
Open
Open
Closed
100iMHz
Closed
Closed
Closed

CPU TYPE SELECTION
Type
JP11
JP12
JP13
CX486M6
1 & 2, 3 & 4, 5 & 6
1 & 2, 3 & 4, 5 & 6
2 & 3
80486SX
Open
2 & 3
2 & 3
CX486M7
1 & 2, 3 & 4, 5 & 6
1 & 2, 3 & 4, 5 & 6
1 & 2, 3 & 4
UMC486
2 & 3
2 & 3
2 & 3
AM486DXL
2 & 3
2 & 3
1 & 2, 3 & 4
80486DX
Open
2 & 3
1 & 2, 3 & 4
SL80486DX
1 & 2
1 & 2
1 & 2, 3 & 4
80486DX2
Open
2 & 3
1 & 2, 3 & 4
80486DX4
1 & 2
1 & 2
1 & 2, 3 & 4
P24D
1 & 2, 4 & 5
1 & 2, 4 & 5
1 & 2, 3 & 4
P24T
1 & 2
1 & 2
1 & 2, 3 & 4
Note: Pins designated should be in the closed position.

CPU TYPE SELECTION (CON’T)
Type
JP17
JP18
JP19
JP35
CX486M6
Open
2 & 3, 4 & 5
2 & 3, 4 & 5
Open
80486SX
Open
Open
Open
Closed
CX486M7
1 & 2
2 & 3, 4 & 5
2 & 3
Open
UMC486
3 & 4
1 & 2
Open
Closed
AM486DXL
1 & 2, 3 & 4
1 & 2
Open
Closed
80486DX
1 & 2
Open
Open
Closed
SL80486DX
1 & 2
5 & 6
1 & 2, 3 & 4
Open
80486DX2
1 & 2
Open
Open
Closed
80486DX4
1 & 2
5 & 6
1 & 2, 3 & 4
Open
P24D
1 & 2
3 & 4, 5 & 6
1 & 2, 3 & 4
Open
P24T
2 & 3
5 & 6
1 & 2, 3 & 4
Open
Note: Pins designated should be in the closed position.

CPU VOLTAGE SELECTION
Voltage
JP14
JP16
JP27
3.45v
Pins 1 & 2 closed
Pins 1 & 2 closed
Pins 1 & 2 closed
5v
Pins 2 & 3 closed
Pins 2 & 3 closed
Pins 2 & 3 closed

VL BUS WAIT STATE SELECTION
Setting
JP22
0
Open
1
Closed

VL BUS SPEED SELECTION
Setting
JP21
<= 33MHz
Open
>33 MHz
Closed

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Processor	CX486SXM6/80486SX/CX486M7/UMC486/AM486DXL/80486DX/ SL80486DX/80486DX/80486DX2/80486DX4/P24D/P24T
Processor Speed	25/33/40/50(internal)/50/66(internal)/75(internal)/100(internal)MHz
Chip Set	Unidentified
Video Chip Set	None
Maximum Onboard Memory	64MB
Maximum Video Memory	None
Cache	64/128/256KB
BIOS	AMI/Award
Dimensions	250mm x 220mm
I/O Options	32-bit VESA local bus slots (3)
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
External battery	JP8	Turbo switch	JP15 pins 14 & 15
Speaker	JP15 pins 1 - 4	+5v ground	JP15 pins 17 & 18
Power LED & keylock	JP15 pins 5 - 9	Green PC LED	JP24
Turbo LED	JP15 pins 10 & 11	Green PC connector	JP25
Reset switch	JP15 pins 12 & 13	32-bit VESA local bus slots	SL1 - SL3

USER CONFIGURABLE SETTINGS
Function		Label	Position
	Battery type select external	JP8	Closed
	CMOS memory normal operation	JP8	Pins 2 & 3 closed
	CMOS memory clear	JP8	Pins 3 & 4 closed
	Jumper information unavailable	JP31	Unidentified
	Jumper information unavailable	JP32	Unidentified

DRAM CONFIGURATION
Size	Bank 0	Bank 1	Bank 2
1MB	None	None	(4) 256K x 9
1MB	(1) 256K x 36	None	None
1MB	None	(1) 256K x 36	None
2MB	(1) 256K x 36	None	(4) 256K x 9
2MB	None	(1) 256K x 36	(4) 256K x 9
2MB	(1) 256K x 36	(1) 256K x 36	None
2MB	(1) 512K x 36	None	None
2MB	None	(1) 512K x 36	None
3MB	(1) 256K x 36	(1) 256K x 36	(4) 256K x 9
3MB	None	(1) 512K x 36	(4) 256K x 9
3MB	(1) 256K x 36	(1) 512K x 36	None
3MB	(1) 512K x 36	(1) 256K x 36	None
4MB	(1) 256K x 36	(1) 512K x 36	(4) 256K x 9
4MB	None	None	(4) 1M x 9
4MB	(1) 512K x 36	(1) 512K x 36	None
4MB	(1) 1M x 36	None	None
4MB	None	(1) 1M x 36	None
5MB	(1) 1M x 36	None	(4) 256K x 9
5MB	None	(1) 1M x 36	(4) 256K x 9
5MB	(1) 256K x 36	None	(4) 1M x 9
5MB	None	(1) 256K x 36	(4) 1M x 9
5MB	(1) 256K x 36	(1) 1M x 36	None
5MB	(1) 1M x 36	(1) 256K x 36	None
6MB	None	(1) 512K x 36	(4) 1M x 9

DRAM CONFIGURATION (CON’T)
Size	Bank 0	Bank 1	Bank 2
6MB	(1) 1M x 36	(1) 512K x 36	None
6MB	(1) 512K x 36	(1) 1M x 36	None
7MB	(1) 1M x 36	(1) 512K x 36	(4) 256K x 9
7MB	(1) 256K x 36	(1) 512K x 36	(4) 1M x 9
8MB	(1) 1M x 36	None	(4) 1M x 9
8MB	None	(1) 1M x 36	(4) 1M x 9
8MB	(1) 1M x 36	(1) 1M x 36	None
8MB	(1) 2M x 36	None	None
8MB	None	(1) 2M x 36	None
9MB	(1) 1M x 36	(1) 1M x 36	(4) 256K x 9
9MB	(1) 1M x 36	(1) 256K x 36	(4) 1M x 9
9MB	(1) 256K x 36	(1) 1M x 36	(4) 1M x 9
10MB	(1) 1M x 36	(1) 512K x 36	(4) 1M x 9
12MB	(1) 1M x 36	(1) 1M x 36	(4) 1M x 9
12MB	None	(1) 2M x 36	(4) 4M x 9
12MB	(1) 1M x 36	(1) 2M x 36	None
12MB	(1) 2M x 36	(1) 1M x 36	None
16MB	None	None	(4) 4M x 9
16MB	(1) 4M x 36	None	None
16MB	None	(1) 4M x 36	None
17MB	(1) 4M x 36	None	(4) 256K x 9
17MB	None	(1) 4M x 36	(4) 256K x 9
17MB	(1) 256K x 36	None	(4) 4M x 9
17MB	None	(1) 256K x 36	(4) 4M x 9
18MB	(1) 256K x 36	(1) 4M x 36	(4) 256K x 9
18MB	(1) 4M x 36	(1) 256K x 36	(4) 256K x 9
19MB	(1) 4M x 36	(1) 512K x 36	(4) 256K x 9
20MB	(1) 4M x 36	None	(4) 1M x 9
20MB	None	(1) 4M x 36	(4) 1M x 9
20MB	(1) 1M x 36	None	(4) 4M x 9
20MB	None	(1) 1M x 36	(4) 4M x 9
21MB	(1) 1M x 36	(1) 4M x 36	(4) 256K x 9
21MB	(1) 4M x 36	(1) 1M x 36	(4) 256K x 9
24MB	(1) 1M x 36	(1) 4M x 36	(4) 1M x 9
24MB	(1) 4M x 36	(1) 1M x 36	(4) 1M x 9
32MB	(1) 4M x 36	None	(4) 4M x 9
32MB	None	(1) 4M x 36	(4) 4M x 9
32MB	(1) 4M x 36	(1) 4M x 36	None
32MB	(1) 8M x 36	None	None
32MB	None	(1) 8M x 36	None

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 (A)	(4) 32K x 8	(4) 32K x 8	(1) 32K x 8
256KB (B)	(4) 64K x 8	None	(1) 32K x 8

CACHE JUMPER CONFIGURATION
Size	JP7	JP9	JP10	JP33
64KB	Open	Open	Pins 2 & 3 closed	Open
128KB	Open	Pins 1 & 2 closed	Pins 1 & 2 closed	Closed
256KB (A)	Closed	Pins 2 & 3 closed	Pins 2 & 3 closed	Closed
256KB (B)	Closed	Pins 1 & 2, 3 & 4 closed	Pins 1 & 2 closed	Closed

CPU SPEED SELECTION
Speed	JP4	JP5	JP6
25MHz	Open	Open	Closed
33MHz	Closed	Closed	Closed
40MHz	Open	Closed	Closed
50iMHz	Open	Open	Closed
50MHz	Closed	Open	Open
66iMHz	Closed	Closed	Closed
75iMHz	Open	Open	Closed
100iMHz	Closed	Closed	Closed

CPU TYPE SELECTION
Type	JP11	JP12	JP13
CX486M6	1 & 2, 3 & 4, 5 & 6	1 & 2, 3 & 4, 5 & 6	2 & 3
80486SX	Open	2 & 3	2 & 3
CX486M7	1 & 2, 3 & 4, 5 & 6	1 & 2, 3 & 4, 5 & 6	1 & 2, 3 & 4
UMC486	2 & 3	2 & 3	2 & 3
AM486DXL	2 & 3	2 & 3	1 & 2, 3 & 4
80486DX	Open	2 & 3	1 & 2, 3 & 4
SL80486DX	1 & 2	1 & 2	1 & 2, 3 & 4
80486DX2	Open	2 & 3	1 & 2, 3 & 4
80486DX4	1 & 2	1 & 2	1 & 2, 3 & 4
P24D	1 & 2, 4 & 5	1 & 2, 4 & 5	1 & 2, 3 & 4
P24T	1 & 2	1 & 2	1 & 2, 3 & 4
Note: Pins designated should be in the closed position.

CPU TYPE SELECTION (CON’T)
Type	JP17	JP18	JP19	JP35
CX486M6	Open	2 & 3, 4 & 5	2 & 3, 4 & 5	Open
80486SX	Open	Open	Open	Closed
CX486M7	1 & 2	2 & 3, 4 & 5	2 & 3	Open
UMC486	3 & 4	1 & 2	Open	Closed
AM486DXL	1 & 2, 3 & 4	1 & 2	Open	Closed
80486DX	1 & 2	Open	Open	Closed
SL80486DX	1 & 2	5 & 6	1 & 2, 3 & 4	Open
80486DX2	1 & 2	Open	Open	Closed
80486DX4	1 & 2	5 & 6	1 & 2, 3 & 4	Open
P24D	1 & 2	3 & 4, 5 & 6	1 & 2, 3 & 4	Open
P24T	2 & 3	5 & 6	1 & 2, 3 & 4	Open
Note: Pins designated should be in the closed position.

CPU VOLTAGE SELECTION
Voltage	JP14	JP16	JP27
3.45v	Pins 1 & 2 closed	Pins 1 & 2 closed	Pins 1 & 2 closed
5v	Pins 2 & 3 closed	Pins 2 & 3 closed	Pins 2 & 3 closed

VL BUS WAIT STATE SELECTION
Setting	JP22
0	Open
1	Closed

VL BUS SPEED SELECTION
Setting	JP21
<= 33MHz	Open
>33 MHz	Closed