MS-4131G (VLB 486 AL2G) Motherboard Settings and Configuration

ACHME COMPUTER, INC.

MS-4131G (VLB 486 AL2G)

Processor
80486SX/80487SX/CX486M7/AMD486DX/AMD486DXL/80486DX/80486DX2/ Pentium Overdrive
Processor Speed
20/25/33/40/50(internal)/50/66(internal)66MHz
Chip Set
ALI
Max. Onboard DRAM
64MB
Cache
128/256/512KB
BIOS
AMI/Award/Phoenix
Dimensions
260mm x 220mm
I/O Options
32-bit VESA local bus slots (3), green PC connector
NPU Options
None

CONNECTIONS
Purpose
Location
Purpose
Location
External battery
JB
Reset switch
JFP pins 19 - 20
Power LED & keylock
JFP pins 1 -5
Green PC connector (monitor)
JG1
Speaker
JFP pins 7 - 10
Green PC LED connector
JG2
Turbo LED
JFP pins 12 - 13
Green PC connector (sleep mode)
JG3
Turbo switch
JFP pins 15 - 17
32-bit VESA Local bus slots
SL1 - SL3

USER CONFIGURABLE SETTINGS
Function
Jumper
Position
»
On board battery installed
JB
pins 2 & 3 closed

External battery installed
JB
pins 1 & 2, 3 & 4 closed
»
PQFP CPU disabled
JC4
Closed

PQFP CPU enabled
JC4
Open
»
Factory configured - do not alter
JC6
N/A
»
Monitor type select monochrome
JP1
pins 1 & 2 closed

Monitor type select color
JP1
pins 2 & 3 closed

DRAM CONFIGURATION
Size
Bank 0
Bank 1
Bank 2
1MB
(4) 256K x 9
NONE
NONE
1MB
NONE
(1) 256K x 36
NONE
1MB
NONE
NONE
(1) 256K x 36
2MB
NONE
NONE
(1) 512K x 36
2MB
NONE
(1) 512K x 36
NONE
2MB
NONE
(1) 256K x 36
(1) 256K x 36
2MB
(4) 256K x 9
(1) 256K x 36
NONE
3MB
(4) 256K x 9
(1) 256K x 36
(1) 256K x 36
3MB
NONE
(1) 256K x 36
(1) 512K x 36
4MB
(4) 256K x 9
(1) 256K x 36
(1) 512K x 36
4MB
(4) 1M x 9
NONE
NONE
4MB
NONE
(1) 512K x 36
(1) 512K x 36
4MB
NONE
(1) 1M x 36
NONE
4MB
NONE
NONE
(1) 1M x 36
5MB
NONE
(1) 256K x 36
(1) 1M x 36
5MB
(4) 256K x 9
(1) 1M x 36
NONE
5MB
(4) 1M x 9
(1) 256K x 36
NONE
6MB
(4) 256K x 9
(1) 1M x 36
(1) 256K x 36
6MB
(4) 256K x 9
(1) 256K x 36
(1) 1M x 36
6MB
(4) 1M x 9
(1) 256K x 36
(1) 256K x 36
6MB
NONE
(1) 512K x 36
(1) 1M x 36
7MB
(4) 256K x 9
(1) 1M x 36
(1) 512K x 36
7MB
(4) 1M x 9
(1) 256K x 36
(1) 512K x 36
8MB
NONE
NONE
(1) 2M x 36
8MB
NONE
(1) 2M x 36
NONE
8MB
NONE
(1) 1M x 36
(1) 1M x 36
8MB
(4) 1M x 9
(1) 1M x 36
NONE
9MB
(4) 256K x 9
(1) 1M x 36
(1) 1M x 36
9MB
(4) 1M x 9
(1) 256K x 36
(1) 1M x 36
9MB
(4) 1M x 9
(1) 1M x 36
(1) 256K x 36
9MB
NONE
(1) 256K x 36
(1) 2M x 36
10MB
(4) 1M x 9
(1) 1M x 36
(1) 512K x 36
10MB
(4) 256K x 9
(1) 256K x 36
(1) 2M x 36

DRAM CONFIGURATION (CON’T)
Size
Bank 0
Bank 1
Bank 2
10MB
NONE
(1) 512K x 36
(1) 2M x 36
12MB
(4) 1M x 9
(1) 1M x 36
(1) 1M x 36
12MB
NONE
(1) 1M x 36
(1) 2M x 36
13MB
(4) 1M x 9
(1) 256K x 36
(1) 2M x 36
13MB
(4) 256K x 9
(1) 1M x 36
(1) 2M x 36
16MB
NONE
NONE
(1) 4M x 36
16MB
NONE
(1) 4M x 36
NONE
16MB
NONE
(1) 2M x 36
(1) 2M x 36
16MB
(4) 1M x 9
(1) 1M x 36
(1) 2M x 36
17MB
(4) 256K x 9
(1) 4M x 36
NONE
17MB
NONE
(1) 256K x 36
(1) 4M x 36
18MB
NONE
(1) 512K x 36
(1) 4M x 36
18MB
(4) 256K x 9
(1) 256K x 36
(1) 4M x 36
18MB
(4) 256K x 9
(1) 4M x 36
(1) 256K x 36
19MB
(4) 256K x 9
(1) 4M x 36
(1) 512K x 36
20MB
(4) 1M x 9
(1) 4M x 36
NONE
20MB
NONE
(1) 1M x 36
(1) 4M x 36
21MB
(4) 256K x 9
(1) 1M x 36
(1) 4M x 36
21MB
(4) 1M x 9
(1) 256K x 36
(1) 4M x 36
21MB
(4) 256K x 9
(1) 4M x 36
(1) 1M x 36
21MB
(4) 1M x 9
(1) 4M x 36
(1) 256K x 36
21MB
(4) 4M x 9
(1) 256K x 36
(1) 1M x 36
21MB
(4) 1M x 9
(1) 256K x 36
(1) 8M x 36
22MB
(4) 1M x 9
(1) 4M x 36
(1) 512K x 36
24MB
(4) 4M x 9
(1) 1M x 36
(1) 1M x 36
24MB
(4) 1M x 9
(1) 4M x 36
(1) 1M x 36
24MB
(4) 1M x 9
(1) 1M x 36
(1) 4M x 36
24MB
NONE
(1) 2M x 36
(1) 4M x 36
25MB
(4) 256K x 9
(1) 4M x 36
(1) 2M x 36
25MB
(4) 4M x 9
(1) 256K x 36
(1) 2M x 36
28MB
(4) 1M x 9
(1) 4M x 36
(1) 2M x 36
28MB
(4) 4M x 9
(1) 1M x 36
(1) 2M x 36
32MB
(4) 4M x 9
NONE
(1) 4M x 36
32MB
NONE
(1) 4M x 36
(1) 4M x 36
32MB
NONE
(1) 8M x 36
NONE
32MB
NONE
NONE
(1) 8M x 36
32MB
(4) 4M x 9
(1) 4M x 36
NONE
33MB
(4) 4M x 9
(1) 4M x 36
(1) 256K x 36
33MB
(4) 4M x 9
(1) 256K x 36
(1) 4M x 36
33MB
(4) 256K x 9
(1) 4M x 36
(1) 4M x 36
33MB
NONE
(1) 256K x 36
(1) 8M x 36
33MB
(4) 4M x 9
(1) 256K x 36
(1) 4M x 36
34MB
(4) 4M x 9
(1) 256K x 36
(1) 256K x 36
34MB
(4) 4M x 9
(1) 4M x 36
(1) 512K x 36

DRAM CONFIGURATION (CON’T)
Size
Bank 0
Bank 1
Bank 2
34MB
(4) 256K x 9
(1) 256K x 36
(1) 8M x 36
34MB
NONE
(1) 512K x 36
(1) 8M x 36
36MB
(4) 1M x 9
(1) 4M x 36
(1) 4M x 36
36MB
(4) 4M x 9
(1) 1M x 36
(1) 4M x 36
36MB
(4) 4M x 9
(1) 4M x 36
(1) 1M x 36
36MB
NONE
(1) 1M x 36
(1) 8M x 36
37MB
(4) 256K x 9
(1) 1M x 36
(1) 8M x 36
37MB
(4) 256K x 9
(1) 1M x 36
(1) 8M x 36
37MB
(4) 4M x 9
(1) 1M x 36
(1) 256K x 36
40MB
(4) 1M x 9
(1) 1M x 36
(1) 8M x 36
40MB
(4) 4M x 9
(1) 4M x 36
(1) 2M x 36
40MB
NONE
(1) 2M x 36
(1) 8M x 36
48MB
(4) 4M x 9
(1) 4M x 36
(1) 4M x 36
48MB
NONE
(1) 4M x 36
(1) 8M x 36
49MB
(4) 256K x 9
(1) 4M x 36
(1) 8M x 36
49MB
(4) 4M x 9
(1) 256K x 36
(1) 8M x 36
52MB
(4) 1M x 9
(1) 4M x 36
(1) 8M x 36
64MB
NONE
(1) 8M x 36
(1) 8M x 36
64MB
(4) 4M x 9
(1) 4M x 36
(1) 8M x 36

CACHE CONFIGURATION
Size
Bank 0
Bank 1
TAG
128KB
(4) 32K x 8
NONE
(1) 8K x 8 or (1) 16K x 8 or (1) 32K x 8
256KB
(4) 32K x 8
(4) 32K x 8
(1) 16K x 8 or (1) 32K x 8
256KB
(4) 64K x 8
NONE
(1) 16K x 8 or (1) 32K x 8
512KB
(4) 128K x 8
NONE
(1) 32K x 8

CACHE JUMPER CONFIGURATION
Size
JS1
JS2
JS3
128KB
pins 2 & 3 closed
pins 2 & 3 closed
pins 2 & 3 closed
256KB
pins 1 & 2 closed
pins 1 & 2 closed
pins 2 & 3 closed
256KB
pins 2 & 3 closed
pins 1 & 2 closed
pins 2 & 3 closed
512KB
pins 2 & 3 closed
pins 1 & 2 closed
pins 1 & 2 closed

CPU TYPE CONFIGURATION
Type
JC1
JC2
CX486 M7
2A & 3A, 1B & 2B, 1C & 2C
1 & 2, 3 & 4
80486SX
1A & 2A, 1B & 2B, 1C & 2C
2 & 3
SL 80486SX
1A & 2A, 1B & 2B, 1C & 2C
2 & 3
80487SX
1A & 2A, 1B & 2B, 1C & 2C
1 & 2, 3 & 4
AMD486DX/DXL
1A & 2A, 1B & 2B, 1C & 2C
1 & 2, 3 & 4
80486DX/DX2
1A & 2A, 1B & 2B, 1C & 2C
1 & 2, 3 & 4
SL 80486DX/DX2
1A & 2A, 1B & 2B, 1C & 2C
1 & 2, 3 & 4
Pentium Overdrive
1A & 2A, 2B & 3B, 1C & 2C
1 & 2, 3 & 4
Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION
Type
JC3
JC5
CX486 M7
2A & 3A, 4A & 5A, 3B & 4B, 5B & 6B, 3C & 4C, 5C & 6C
1 & 2
80486SX
4C & 5C
1 & 2
SL 80486SX
1A & 2A, 5A & 6A, 4C & 4D, 5C & 6C
1 & 2
80487SX
2B & 3B, 4C & 5C
1 & 2
AMD486DX/DXL
2A & 2B, 3B & 4B, 5A & 5B, 4C & 5C
1 & 2
80486DX/DX2
3B & 4B, 4C & 5C
1 & 2
SL 80486DX/DX2
1A & 2A, 3B & 4B, 4C & 4D, 5A & 6A, 5C & 6C
1 & 2
Pentium Overdrive
1A & 2A, 5A &6A, 2B & 3B, 5C & 6C
2 & 3
Note: Pins designated should be in the closed position.

CPU SPEED CONFIGURATION
Speed
JK1
JK2
JK3
25MHz
1 & 2, 7 & 9, 8 & 10, 14 & 16
2 & 3
1 & 2
33MHz
1 & 2, 3 & 4, 5 & 6, 7 & 9, 8 & 10, 14 & 16
2 & 3
1 & 2
40MHz
3 & 4, 10 & 12, 14 & 16
1 & 2
2 & 3
AMD40MHz
3 & 4, 10 & 12, 14 & 16
4 & 5
2 & 3
50iMHz
1 & 2, 7 & 9, 8 & 10, 14 & 16
2 & 3
1 & 2
50MHz
1 & 2, 7 & 9, 10 & 12
1 & 2
2 & 3
66iMHz
1 & 2, 3 & 4, 5 & 6, 7 & 9, 8 & 10, 14 & 16
2 & 3
1 & 2
Note: Pins designated should be in the closed position.

BUS SPEED CONFIGURATION
CPU speed
JP2
<=33MHz
pins 1 & 2 closed
>33MHz
pins 2 & 3 closed

VESA WAIT STATE CONFIGURATION
Wait states
JP3
0 wait states
pins 1 & 2 open
1 wait state
pins 1 & 2 closed

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MS-4131G (VLB 486 AL2G) Motherboard Settings and Configuration

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Processor	80486SX/80487SX/CX486M7/AMD486DX/AMD486DXL/80486DX/80486DX2/ Pentium Overdrive
Processor Speed	20/25/33/40/50(internal)/50/66(internal)66MHz
Chip Set	ALI
Max. Onboard DRAM	64MB
Cache	128/256/512KB
BIOS	AMI/Award/Phoenix
Dimensions	260mm x 220mm
I/O Options	32-bit VESA local bus slots (3), green PC connector
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
External battery	JB	Reset switch	JFP pins 19 - 20
Power LED & keylock	JFP pins 1 -5	Green PC connector (monitor)	JG1
Speaker	JFP pins 7 - 10	Green PC LED connector	JG2
Turbo LED	JFP pins 12 - 13	Green PC connector (sleep mode)	JG3
Turbo switch	JFP pins 15 - 17	32-bit VESA Local bus slots	SL1 - SL3

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	On board battery installed	JB	pins 2 & 3 closed
	External battery installed	JB	pins 1 & 2, 3 & 4 closed
»	PQFP CPU disabled	JC4	Closed
	PQFP CPU enabled	JC4	Open
»	Factory configured - do not alter	JC6	N/A
»	Monitor type select monochrome	JP1	pins 1 & 2 closed
	Monitor type select color	JP1	pins 2 & 3 closed

DRAM CONFIGURATION
Size	Bank 0	Bank 1	Bank 2
1MB	(4) 256K x 9	NONE	NONE
1MB	NONE	(1) 256K x 36	NONE
1MB	NONE	NONE	(1) 256K x 36
2MB	NONE	NONE	(1) 512K x 36
2MB	NONE	(1) 512K x 36	NONE
2MB	NONE	(1) 256K x 36	(1) 256K x 36
2MB	(4) 256K x 9	(1) 256K x 36	NONE
3MB	(4) 256K x 9	(1) 256K x 36	(1) 256K x 36
3MB	NONE	(1) 256K x 36	(1) 512K x 36
4MB	(4) 256K x 9	(1) 256K x 36	(1) 512K x 36
4MB	(4) 1M x 9	NONE	NONE
4MB	NONE	(1) 512K x 36	(1) 512K x 36
4MB	NONE	(1) 1M x 36	NONE
4MB	NONE	NONE	(1) 1M x 36
5MB	NONE	(1) 256K x 36	(1) 1M x 36
5MB	(4) 256K x 9	(1) 1M x 36	NONE
5MB	(4) 1M x 9	(1) 256K x 36	NONE
6MB	(4) 256K x 9	(1) 1M x 36	(1) 256K x 36
6MB	(4) 256K x 9	(1) 256K x 36	(1) 1M x 36
6MB	(4) 1M x 9	(1) 256K x 36	(1) 256K x 36
6MB	NONE	(1) 512K x 36	(1) 1M x 36
7MB	(4) 256K x 9	(1) 1M x 36	(1) 512K x 36
7MB	(4) 1M x 9	(1) 256K x 36	(1) 512K x 36
8MB	NONE	NONE	(1) 2M x 36
8MB	NONE	(1) 2M x 36	NONE
8MB	NONE	(1) 1M x 36	(1) 1M x 36
8MB	(4) 1M x 9	(1) 1M x 36	NONE
9MB	(4) 256K x 9	(1) 1M x 36	(1) 1M x 36
9MB	(4) 1M x 9	(1) 256K x 36	(1) 1M x 36
9MB	(4) 1M x 9	(1) 1M x 36	(1) 256K x 36
9MB	NONE	(1) 256K x 36	(1) 2M x 36
10MB	(4) 1M x 9	(1) 1M x 36	(1) 512K x 36
10MB	(4) 256K x 9	(1) 256K x 36	(1) 2M x 36

DRAM CONFIGURATION (CON’T)
Size	Bank 0	Bank 1	Bank 2
10MB	NONE	(1) 512K x 36	(1) 2M x 36
12MB	(4) 1M x 9	(1) 1M x 36	(1) 1M x 36
12MB	NONE	(1) 1M x 36	(1) 2M x 36
13MB	(4) 1M x 9	(1) 256K x 36	(1) 2M x 36
13MB	(4) 256K x 9	(1) 1M x 36	(1) 2M x 36
16MB	NONE	NONE	(1) 4M x 36
16MB	NONE	(1) 4M x 36	NONE
16MB	NONE	(1) 2M x 36	(1) 2M x 36
16MB	(4) 1M x 9	(1) 1M x 36	(1) 2M x 36
17MB	(4) 256K x 9	(1) 4M x 36	NONE
17MB	NONE	(1) 256K x 36	(1) 4M x 36
18MB	NONE	(1) 512K x 36	(1) 4M x 36
18MB	(4) 256K x 9	(1) 256K x 36	(1) 4M x 36
18MB	(4) 256K x 9	(1) 4M x 36	(1) 256K x 36
19MB	(4) 256K x 9	(1) 4M x 36	(1) 512K x 36
20MB	(4) 1M x 9	(1) 4M x 36	NONE
20MB	NONE	(1) 1M x 36	(1) 4M x 36
21MB	(4) 256K x 9	(1) 1M x 36	(1) 4M x 36
21MB	(4) 1M x 9	(1) 256K x 36	(1) 4M x 36
21MB	(4) 256K x 9	(1) 4M x 36	(1) 1M x 36
21MB	(4) 1M x 9	(1) 4M x 36	(1) 256K x 36
21MB	(4) 4M x 9	(1) 256K x 36	(1) 1M x 36
21MB	(4) 1M x 9	(1) 256K x 36	(1) 8M x 36
22MB	(4) 1M x 9	(1) 4M x 36	(1) 512K x 36
24MB	(4) 4M x 9	(1) 1M x 36	(1) 1M x 36
24MB	(4) 1M x 9	(1) 4M x 36	(1) 1M x 36
24MB	(4) 1M x 9	(1) 1M x 36	(1) 4M x 36
24MB	NONE	(1) 2M x 36	(1) 4M x 36
25MB	(4) 256K x 9	(1) 4M x 36	(1) 2M x 36
25MB	(4) 4M x 9	(1) 256K x 36	(1) 2M x 36
28MB	(4) 1M x 9	(1) 4M x 36	(1) 2M x 36
28MB	(4) 4M x 9	(1) 1M x 36	(1) 2M x 36
32MB	(4) 4M x 9	NONE	(1) 4M x 36
32MB	NONE	(1) 4M x 36	(1) 4M x 36
32MB	NONE	(1) 8M x 36	NONE
32MB	NONE	NONE	(1) 8M x 36
32MB	(4) 4M x 9	(1) 4M x 36	NONE
33MB	(4) 4M x 9	(1) 4M x 36	(1) 256K x 36
33MB	(4) 4M x 9	(1) 256K x 36	(1) 4M x 36
33MB	(4) 256K x 9	(1) 4M x 36	(1) 4M x 36
33MB	NONE	(1) 256K x 36	(1) 8M x 36
33MB	(4) 4M x 9	(1) 256K x 36	(1) 4M x 36
34MB	(4) 4M x 9	(1) 256K x 36	(1) 256K x 36
34MB	(4) 4M x 9	(1) 4M x 36	(1) 512K x 36

CACHE CONFIGURATION
Size	Bank 0	Bank 1	TAG
128KB	(4) 32K x 8	NONE	(1) 8K x 8 or (1) 16K x 8 or (1) 32K x 8
256KB	(4) 32K x 8	(4) 32K x 8	(1) 16K x 8 or (1) 32K x 8
256KB	(4) 64K x 8	NONE	(1) 16K x 8 or (1) 32K x 8
512KB	(4) 128K x 8	NONE	(1) 32K x 8

CACHE JUMPER CONFIGURATION
Size	JS1	JS2	JS3
128KB	pins 2 & 3 closed	pins 2 & 3 closed	pins 2 & 3 closed
256KB	pins 1 & 2 closed	pins 1 & 2 closed	pins 2 & 3 closed
256KB	pins 2 & 3 closed	pins 1 & 2 closed	pins 2 & 3 closed
512KB	pins 2 & 3 closed	pins 1 & 2 closed	pins 1 & 2 closed

CPU TYPE CONFIGURATION
Type	JC1	JC2
CX486 M7	2A & 3A, 1B & 2B, 1C & 2C	1 & 2, 3 & 4
80486SX	1A & 2A, 1B & 2B, 1C & 2C	2 & 3
SL 80486SX	1A & 2A, 1B & 2B, 1C & 2C	2 & 3
80487SX	1A & 2A, 1B & 2B, 1C & 2C	1 & 2, 3 & 4
AMD486DX/DXL	1A & 2A, 1B & 2B, 1C & 2C	1 & 2, 3 & 4
80486DX/DX2	1A & 2A, 1B & 2B, 1C & 2C	1 & 2, 3 & 4
SL 80486DX/DX2	1A & 2A, 1B & 2B, 1C & 2C	1 & 2, 3 & 4
Pentium Overdrive	1A & 2A, 2B & 3B, 1C & 2C	1 & 2, 3 & 4
Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION
Type	JC3	JC5
CX486 M7	2A & 3A, 4A & 5A, 3B & 4B, 5B & 6B, 3C & 4C, 5C & 6C	1 & 2
80486SX	4C & 5C	1 & 2
SL 80486SX	1A & 2A, 5A & 6A, 4C & 4D, 5C & 6C	1 & 2
80487SX	2B & 3B, 4C & 5C	1 & 2
AMD486DX/DXL	2A & 2B, 3B & 4B, 5A & 5B, 4C & 5C	1 & 2
80486DX/DX2	3B & 4B, 4C & 5C	1 & 2
SL 80486DX/DX2	1A & 2A, 3B & 4B, 4C & 4D, 5A & 6A, 5C & 6C	1 & 2
Pentium Overdrive	1A & 2A, 5A &6A, 2B & 3B, 5C & 6C	2 & 3
Note: Pins designated should be in the closed position.

CPU SPEED CONFIGURATION
Speed	JK1	JK2	JK3
25MHz	1 & 2, 7 & 9, 8 & 10, 14 & 16	2 & 3	1 & 2
33MHz	1 & 2, 3 & 4, 5 & 6, 7 & 9, 8 & 10, 14 & 16	2 & 3	1 & 2
40MHz	3 & 4, 10 & 12, 14 & 16	1 & 2	2 & 3
AMD40MHz	3 & 4, 10 & 12, 14 & 16	4 & 5	2 & 3
50iMHz	1 & 2, 7 & 9, 8 & 10, 14 & 16	2 & 3	1 & 2
50MHz	1 & 2, 7 & 9, 10 & 12	1 & 2	2 & 3
66iMHz	1 & 2, 3 & 4, 5 & 6, 7 & 9, 8 & 10, 14 & 16	2 & 3	1 & 2
Note: Pins designated should be in the closed position.

BUS SPEED CONFIGURATION
CPU speed	JP2
<=33MHz	pins 1 & 2 closed
>33MHz	pins 2 & 3 closed

VESA WAIT STATE CONFIGURATION
Wait states	JP3
0 wait states	pins 1 & 2 open
1 wait state	pins 1 & 2 closed