J-446A (V2.0) Motherboard Settings and Configuration

J-MARK COMPUTER CORPORATION

J-446A (V2.0)

Processor
80486SX/AM486DX2/CX486DX2/80486DX2/CX486DX4/AM486DX4/
AM486DX4(WB)/AM486DX4(WT)/80486DX4(WB)/80486DX4(WT)/
P24D/P24T/CX5X86/AM5X86
Processor Speed
25/33/40/50(internal)/50/66(internal)/80(internal)/100(internal)/ 120(internal)MHz
Chip Set
SIS
Video Chip Set
None
Maximum Onboard Memory
128MB
Maximum Video Memory
None
Cache
128/256KB
BIOS
Award
Dimensions
254mm x 218mm
I/O Options
32-bit PCI slots (3), floppy drive interface, green PC connector, IDE interfaces (2), parallel port, serial ports (2)
NPU Options
None

CONNECTIONS
Purpose
Location
Purpose
Location
Parallel port
CN1
IDE interface LED
JP33
IDE interface 2
CN2
Green PC connector
JP35
IDE interface 1
CN3
Turbo LED
JP37
Floppy drive interface
CN4
Reset switch
JP38
Serial port 1
CN5
Turbo switch
JP39
Serial port 2
CN6
Power LED & keylock
JP40
External battery
JP1
Green PC LED
LED1
Speaker
JP27
32-bit PCI slots
PC1 - PC3

USER CONFIGURABLE SETTINGS
Function
Label
Position
»
Monitor type select color
JP6
Closed

Monitor type select monochrome
JP6
Open
»
Factory configured - do not alter
JP13
Unidentified
»
BIOS type select EPROM
JP19
Open

BIOS type select 5v flash
JP19
Pins 2 & 3 closed

BIOS type select 12v flash
JP19
Pins 1 & 2 closed
»
Factory configured - do not alter
JP21
Unidentified

Turbo enabled
JP39
Pins 2 & 3 closed

Turbo disabled
JP39
Pins 1 & 2 closed

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

DRAM CONFIGURATION (CON’T)
Size
Bank 0
Bank 1
Bank 2
Bank 3
6MB
(1) 512K x 36
(1) 512K x 36
(1) 512K x 36
None
7MB
(1) 1M x 36
(1) 256K x 36
(1) 256K x 36
(1) 256K x 36
8MB
(1) 2M x 36
None
None
None
8MB
(1) 1M x 36
(1) 512K x 36
(1) 512K x 36
None
8MB
(1) 1M x 36
(1) 1M x 36
None
None
8MB
(1) 512K x 36
(1) 512K x 36
(1) 512K x 36
(1) 512K x 36
9MB
(1) 2M x 36
(1) 256K x 36
None
None
10MB
(1) 2M x 36
(1) 256K x 36
(1) 256K x 36
None
10MB
(1) 2M x 36
(1) 512K x 36
None
None
10MB
(1) 1M x 36
(1) 512K x 36
(1) 512K x 36
(1) 512K x 36
11MB
(1) 2M x 36
(1) 256K x 36
(1) 256K x 36
(1) 256K x 36
12MB
(1) 2M x 36
(1) 512K x 36
(1) 512K x 36
None
12MB
(1) 2M x 36
(1) 1M x 36
None
None
12MB
(1) 1M x 36
(1) 1M x 36
(1) 1M x 36
None
14MB
(1) 2M x 36
(1) 512K x 36
(1) 512K x 36
(1) 512K x 36
16MB
(1) 4M x 36
None
None
None
16MB
(1) 2M x 36
(1) 2M x 36
None
None
16MB
(1) 1M x 36
(1) 1M x 36
(1) 1M x 36
(1) 1M x 36
17MB
(1) 4M x 36
(1) 256K x 36
None
None
18MB
(1) 4M x 36
(1) 256K x 36
(1) 256K x 36
None
18MB
(1) 4M x 36
(1) 512K x 36
None
None
19MB
(1) 4M x 36
(1) 256K x 36
(1) 256K x 36
(1) 256K x 36
20MB
(1) 4M x 36
(1) 512K x 36
(1) 512K x 36
None
20MB
(1) 4M x 36
(1) 1M x 36
None
None
20MB
(1) 2M x 36
(1) 1M x 36
(1) 1M x 36
(1) 1M x 36
20MB
(1) 1M x 36
(1) 2M x 36
(1) 2M x 36
None
20MB
(1) 1M x 36
(1) 4M x 36
None
None
22MB
(1) 4M x 36
(1) 512K x 36
(1) 512K x 36
(1) 512K x 36
24MB
(1) 4M x 36
(1) 1M x 36
(1) 1M x 36
None
24MB
(1) 4M x 36
(1) 2M x 36
None
None
24MB
(1) 2M x 36
(1) 2M x 36
(1) 2M x 36
None
24MB
(1) 2M x 36
(1) 4M x 36
None
None
28MB
(1) 4M x 36
(1) 1M x 36
(1) 1M x 36
(1) 1M x 36
28MB
(1) 1M x 36
(1) 2M x 36
(1) 2M x 36
(1) 2M x 36
32MB
(1) 8M x 36
None
None
None
32MB
(1) 4M x 36
(1) 2M x 36
(1) 2M x 36
None
32MB
(1) 4M x 36
(1) 4M x 36
None
None
32MB
(1) 2M x 36
(1) 2M x 36
(1) 2M x 36
(1) 2M x 36
33MB
(1) 8M x 36
(1) 256K x 36
None
None
34MB
(1) 8M x 36
(1) 256K x 36
(1) 256K x 36
None
34MB
(1) 8M x 36
(1) 512K x 36
None
None
35MB
(1) 8M x 36
(1) 256K x 36
(1) 256K x 36
(1) 256K x 36

DRAM CONFIGURATION (CON’T)
Size
Bank 0
Bank 1
Bank 2
Bank 3
36MB
(1) 8M x 36
(1) 512K x 36
(1) 512K x 36
None
36MB
(1) 8M x 36
(1) 1M x 36
None
None
38MB
(1) 8M x 36
(1) 512K x 36
(1) 512K x 36
(1) 512K x 36
40MB
(1) 8M x 36
(1) 1M x 36
(1) 1M x 36
None
40MB
(1) 8M x 36
(1) 2M x 36
None
None
40MB
(1) 4M x 36
(1) 2M x 36
(1) 2M x 36
(1) 2M x 36
44MB
(1) 8M x 36
(1) 1M x 36
(1) 1M x 36
(1) 1M x 36
48MB
(1) 8M x 36
(1) 2M x 36
(1) 2M x 36
None
48MB
(1) 8M x 36
(1) 4M x 36
None
None
48MB
(1) 4M x 36
(1) 4M x 36
(1) 4M x 36
None
52MB
(1) 1M x 36
(1) 4M x 36
(1) 4M x 36
(1) 4M x 36
56MB
(1) 8M x 36
(1) 2M x 36
(1) 2M x 36
(1) 2M x 36
64MB
(1) 8M x 36
(1) 4M x 36
(1) 4M x 36
None
64MB
(1) 8M x 36
(1) 8M x 36
None
None
64MB
(1) 4M x 36
(1) 4M x 36
(1) 4M x 36
(1) 4M x 36
68MB
(1) 1M x 36
(1) 8M x 36
(1) 8M x 36
None
72MB
(1) 2M x 36
(1) 8M x 36
(1) 8M x 36
None
80MB
(1) 8M x 36
(1) 4M x 36
(1) 4M x 36
(1) 4M x 36
96MB
(1) 8M x 36
(1) 8M x 36
(1) 8M x 36
None
100MB
(1) 1M x 36
(1) 8M x 36
(1) 8M x 36
(1) 8M x 36
104MB
(1) 2M x 36
(1) 8M x 36
(1) 8M x 36
(1) 8M x 36
112MB
(1) 4M x 36
(1) 8M x 36
(1) 8M x 36
(1) 8M x 36
128MB
(1) 8M x 36
(1) 8M x 36
(1) 8M x 36
(1) 8M x 36

CACHE CONFIGURATION
Size
Bank 0
TAG
128KB
(4) 32K x 8
(1) 8K x 8
256KB
(4) 64K x 8
(1) 16K x 8

CACHE JUMPER CONFIGURATION
Size
JP7
JP8
128KB
Pins 1 & 2 closed
Pins 1 & 2 closed
256KB
Pins 1 & 2 closed
Pins 2 & 3 closed

CPU SPEED CONFIGURATION
Speed
JP11
JP12
25MHz
Open
Pins 1 & 2 closed
33MHz
Pins 1 & 2, 3 & 4 closed
Pins 1 & 2 closed
40MHz
Pins 1 & 2 closed
Pins 1 & 2 closed
50iMHz
Open
Pins 1 & 2 closed
50MHz
Pins 3 & 4 closed
Pins 2 & 3 closed
66iMHz
Pins 1 & 2, 3 & 4 closed
Pins 1 & 2 closed
80iMHz
Pins 1 & 2 closed
Pins 1 & 2 closed
100iMHz
Pins 1 & 2, 3 & 4 closed
Pins 1 & 2 closed
120iMHz
Pins 1 & 2 closed
Pins 1 & 2 closed

CPU TYPE SELECTION
Type
JP9
JP10
JP14
JP15
JP16
80486SX
Open
2 & 3
Open
Open
Open
AM486DX2
2 & 3
2 & 3
Open
Open
2 & 3
CX486DX2
2 & 3
2 & 3
Open
Open
Open
80486DX2
2 & 3
2 & 3
Open
Open
Open
CX486DX4
2 & 3
2 & 3
Open
Open
Open
AM486DX4
2 & 3
1 & 2
Open
1 & 2
1 & 2
AM486DX4 (WB)
2 & 3
1 & 2
Open
1 & 2
1 & 2
AM486DX4 (WT)
2 & 3
2 & 3
Open
Open
1 & 2
80486DX4 (WB)
2 & 3
1 & 2
Open
1 & 2
1 & 2
80486DX4 (WT)
2 & 3
2 & 3
Open
Open
Open
P24D
2 & 3
1 & 2
Open
1 & 2
1 & 2
P24T
1 & 2
1 & 2
1 & 2
Open
Open
CX5X86
2 & 3
2 & 3
Open
1 & 2
Open
AM5X86
2 & 3
1 & 2
Open
1 & 2
1 & 2
Note: Pins designated should be in the closed position.

CPU TYPE SELECTION (CON’T)
Type
JP17
JP20
JP23
JP24
JP25
80486SX
2 & 3
Closed
1 & 2
4 & 5
2 & 3
AM486DX2
Open
Open
Open
4 & 5
1 & 2, 3 & 4
CX486DX2
1 & 2
Closed
Open
2 & 3
1 & 2, 3 & 4
80486DX2
2 & 3
Closed
1 & 2
4 & 5
1 & 2, 3 & 4
CX486DX4
1 & 2
Closed
Open
2 & 3
1 & 2, 3 & 4
AM486DX4
2 & 3
Closed
2 & 3
4 & 5
1 & 2, 3 & 4
AM486DX4 (WB)
2 & 3
Closed
2 & 3
4 & 5
1 & 2, 3 & 4
AM486DX4 (WT)
Open
Open
Open
4 & 5
1 & 2, 3 & 4
80486DX4 (WB)
2 & 3
Closed
2 & 3
4 & 5
1 & 2, 3 & 4
80486DX4 (WT)
2 & 3
Closed
1 & 2
4 & 5
1 & 2, 3 & 4
P24D
2 & 3
Closed
2 & 3
4 & 5
1 & 2, 3 & 4
P24T
2 & 3
Closed
Open
1 & 2
1 & 2, 3 & 4
CX5X86
2 & 3
Closed
2 & 3
4 & 5
1 & 2, 3 & 4
AM5X86
2 & 3
Closed
2 & 3
4 & 5
1 & 2, 3 & 4
Note: Pins designated should be in the closed position.

CPU TYPE SELECTION (CON’T)
Type
JP26
JP28
JP29
JP30
80486SX
3 & 4
Open
Open
Open
AM486DX2
3 & 4
Open
Open
Open
CX486DX2
2 & 3
2 & 3
2 & 3
Open
80486DX2
3 & 4
Open
Open
Open
CX486DX4
2 & 3
2 & 3
2 & 3
Open
AM486DX4
1 & 2, 3 & 4
Open
1 & 2
Open
AM486DX4 (WB)
1 & 2, 3 & 4
Open
1 & 2
Open
AM486DX4 (WT)
3 & 4
Open
Open
Open
80486DX4 (WB)
1 & 2, 3 & 4
Open
1 & 2
Open
80486DX4 (WT)
3 & 4
Open
Open
Open
P24D
1 & 2, 3 & 4
Open
1 & 2
Open
P24T
3 & 4
1 & 2
1 & 2
Open
CX5X86
1 & 2, 3 & 4
Open
1 & 2
Open
AM5X86
1 & 2, 3 & 4
Open
1 & 2
2 & 3
Note: Pins designated should be in the closed position.

CPU VOLTAGE CONFIGURATION
Voltage
JP31
JP32
JP34
3.3v
Pins 2 & 3 closed
Pins 5 & 6 closed
Pins 2 & 3 closed
3.45v
Pins 2 & 3 closed
Pins 3 & 4 closed
Pins 2 & 3 closed
4v
Pins 2 & 3 closed
Pins 1 & 2 closed
Pins 2 & 3 closed
5v
Pins 1 & 2 closed
N/A
Pins 1 & 2 closed

GREEN PC CONFIGURATION
Setting
JP36
Doze mode
Pins 1 & 2 closed
Suspend mode
Pins 3 & 4 closed
Standby mode
Pins 5 & 6, 7 & 8 closed

CMOS CONFIGURATION
Setting
JP2
JP3
CMOS memory normal operation
Pins 1 & 2 closed
Pins 1 & 2 closed
CMOS memory clear
Pins 2 & 3 closed
Pins 2 & 3 closed

DAM CHANNEL SELECTION
Channel
JP18
JP22
1
Pins 1 & 3 closed
Pins 1 & 3 closed
3
Pins 2 & 4 closed
Pins 2 & 4 closed

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Processor	80486SX/AM486DX2/CX486DX2/80486DX2/CX486DX4/AM486DX4/ AM486DX4(WB)/AM486DX4(WT)/80486DX4(WB)/80486DX4(WT)/ P24D/P24T/CX5X86/AM5X86
Processor Speed	25/33/40/50(internal)/50/66(internal)/80(internal)/100(internal)/ 120(internal)MHz
Chip Set	SIS
Video Chip Set	None
Maximum Onboard Memory	128MB
Maximum Video Memory	None
Cache	128/256KB
BIOS	Award
Dimensions	254mm x 218mm
I/O Options	32-bit PCI slots (3), floppy drive interface, green PC connector, IDE interfaces (2), parallel port, serial ports (2)
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
Parallel port	CN1	IDE interface LED	JP33
IDE interface 2	CN2	Green PC connector	JP35
IDE interface 1	CN3	Turbo LED	JP37
Floppy drive interface	CN4	Reset switch	JP38
Serial port 1	CN5	Turbo switch	JP39
Serial port 2	CN6	Power LED & keylock	JP40
External battery	JP1	Green PC LED	LED1
Speaker	JP27	32-bit PCI slots	PC1 - PC3

USER CONFIGURABLE SETTINGS
Function		Label	Position
»	Monitor type select color	JP6	Closed
	Monitor type select monochrome	JP6	Open
»	Factory configured - do not alter	JP13	Unidentified
»	BIOS type select EPROM	JP19	Open
	BIOS type select 5v flash	JP19	Pins 2 & 3 closed
	BIOS type select 12v flash	JP19	Pins 1 & 2 closed
»	Factory configured - do not alter	JP21	Unidentified
	Turbo enabled	JP39	Pins 2 & 3 closed
	Turbo disabled	JP39	Pins 1 & 2 closed

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

DRAM CONFIGURATION (CON’T)
Size	Bank 0	Bank 1	Bank 2	Bank 3
6MB	(1) 512K x 36	(1) 512K x 36	(1) 512K x 36	None
7MB	(1) 1M x 36	(1) 256K x 36	(1) 256K x 36	(1) 256K x 36
8MB	(1) 2M x 36	None	None	None
8MB	(1) 1M x 36	(1) 512K x 36	(1) 512K x 36	None
8MB	(1) 1M x 36	(1) 1M x 36	None	None
8MB	(1) 512K x 36	(1) 512K x 36	(1) 512K x 36	(1) 512K x 36
9MB	(1) 2M x 36	(1) 256K x 36	None	None
10MB	(1) 2M x 36	(1) 256K x 36	(1) 256K x 36	None
10MB	(1) 2M x 36	(1) 512K x 36	None	None
10MB	(1) 1M x 36	(1) 512K x 36	(1) 512K x 36	(1) 512K x 36
11MB	(1) 2M x 36	(1) 256K x 36	(1) 256K x 36	(1) 256K x 36
12MB	(1) 2M x 36	(1) 512K x 36	(1) 512K x 36	None
12MB	(1) 2M x 36	(1) 1M x 36	None	None
12MB	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36	None
14MB	(1) 2M x 36	(1) 512K x 36	(1) 512K x 36	(1) 512K x 36
16MB	(1) 4M x 36	None	None	None
16MB	(1) 2M x 36	(1) 2M x 36	None	None
16MB	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36
17MB	(1) 4M x 36	(1) 256K x 36	None	None
18MB	(1) 4M x 36	(1) 256K x 36	(1) 256K x 36	None
18MB	(1) 4M x 36	(1) 512K x 36	None	None
19MB	(1) 4M x 36	(1) 256K x 36	(1) 256K x 36	(1) 256K x 36
20MB	(1) 4M x 36	(1) 512K x 36	(1) 512K x 36	None
20MB	(1) 4M x 36	(1) 1M x 36	None	None
20MB	(1) 2M x 36	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36
20MB	(1) 1M x 36	(1) 2M x 36	(1) 2M x 36	None
20MB	(1) 1M x 36	(1) 4M x 36	None	None
22MB	(1) 4M x 36	(1) 512K x 36	(1) 512K x 36	(1) 512K x 36
24MB	(1) 4M x 36	(1) 1M x 36	(1) 1M x 36	None
24MB	(1) 4M x 36	(1) 2M x 36	None	None
24MB	(1) 2M x 36	(1) 2M x 36	(1) 2M x 36	None
24MB	(1) 2M x 36	(1) 4M x 36	None	None
28MB	(1) 4M x 36	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36
28MB	(1) 1M x 36	(1) 2M x 36	(1) 2M x 36	(1) 2M x 36
32MB	(1) 8M x 36	None	None	None
32MB	(1) 4M x 36	(1) 2M x 36	(1) 2M x 36	None
32MB	(1) 4M x 36	(1) 4M x 36	None	None
32MB	(1) 2M x 36	(1) 2M x 36	(1) 2M x 36	(1) 2M x 36
33MB	(1) 8M x 36	(1) 256K x 36	None	None
34MB	(1) 8M x 36	(1) 256K x 36	(1) 256K x 36	None
34MB	(1) 8M x 36	(1) 512K x 36	None	None
35MB	(1) 8M x 36	(1) 256K x 36	(1) 256K x 36	(1) 256K x 36

CACHE CONFIGURATION
Size	Bank 0	TAG
128KB	(4) 32K x 8	(1) 8K x 8
256KB	(4) 64K x 8	(1) 16K x 8

CACHE JUMPER CONFIGURATION
Size	JP7	JP8
128KB	Pins 1 & 2 closed	Pins 1 & 2 closed
256KB	Pins 1 & 2 closed	Pins 2 & 3 closed

CPU SPEED CONFIGURATION
Speed	JP11	JP12
25MHz	Open	Pins 1 & 2 closed
33MHz	Pins 1 & 2, 3 & 4 closed	Pins 1 & 2 closed
40MHz	Pins 1 & 2 closed	Pins 1 & 2 closed
50iMHz	Open	Pins 1 & 2 closed
50MHz	Pins 3 & 4 closed	Pins 2 & 3 closed
66iMHz	Pins 1 & 2, 3 & 4 closed	Pins 1 & 2 closed
80iMHz	Pins 1 & 2 closed	Pins 1 & 2 closed
100iMHz	Pins 1 & 2, 3 & 4 closed	Pins 1 & 2 closed
120iMHz	Pins 1 & 2 closed	Pins 1 & 2 closed

CPU TYPE SELECTION
Type	JP9	JP10	JP14	JP15	JP16
80486SX	Open	2 & 3	Open	Open	Open
AM486DX2	2 & 3	2 & 3	Open	Open	2 & 3
CX486DX2	2 & 3	2 & 3	Open	Open	Open
80486DX2	2 & 3	2 & 3	Open	Open	Open
CX486DX4	2 & 3	2 & 3	Open	Open	Open
AM486DX4	2 & 3	1 & 2	Open	1 & 2	1 & 2
AM486DX4 (WB)	2 & 3	1 & 2	Open	1 & 2	1 & 2
AM486DX4 (WT)	2 & 3	2 & 3	Open	Open	1 & 2
80486DX4 (WB)	2 & 3	1 & 2	Open	1 & 2	1 & 2
80486DX4 (WT)	2 & 3	2 & 3	Open	Open	Open
P24D	2 & 3	1 & 2	Open	1 & 2	1 & 2
P24T	1 & 2	1 & 2	1 & 2	Open	Open
CX5X86	2 & 3	2 & 3	Open	1 & 2	Open
AM5X86	2 & 3	1 & 2	Open	1 & 2	1 & 2
Note: Pins designated should be in the closed position.

CPU TYPE SELECTION (CON’T)
Type	JP17	JP20	JP23	JP24	JP25
80486SX	2 & 3	Closed	1 & 2	4 & 5	2 & 3
AM486DX2	Open	Open	Open	4 & 5	1 & 2, 3 & 4
CX486DX2	1 & 2	Closed	Open	2 & 3	1 & 2, 3 & 4
80486DX2	2 & 3	Closed	1 & 2	4 & 5	1 & 2, 3 & 4
CX486DX4	1 & 2	Closed	Open	2 & 3	1 & 2, 3 & 4
AM486DX4	2 & 3	Closed	2 & 3	4 & 5	1 & 2, 3 & 4
AM486DX4 (WB)	2 & 3	Closed	2 & 3	4 & 5	1 & 2, 3 & 4
AM486DX4 (WT)	Open	Open	Open	4 & 5	1 & 2, 3 & 4
80486DX4 (WB)	2 & 3	Closed	2 & 3	4 & 5	1 & 2, 3 & 4
80486DX4 (WT)	2 & 3	Closed	1 & 2	4 & 5	1 & 2, 3 & 4
P24D	2 & 3	Closed	2 & 3	4 & 5	1 & 2, 3 & 4
P24T	2 & 3	Closed	Open	1 & 2	1 & 2, 3 & 4
CX5X86	2 & 3	Closed	2 & 3	4 & 5	1 & 2, 3 & 4
AM5X86	2 & 3	Closed	2 & 3	4 & 5	1 & 2, 3 & 4
Note: Pins designated should be in the closed position.

CPU TYPE SELECTION (CON’T)
Type	JP26	JP28	JP29	JP30
80486SX	3 & 4	Open	Open	Open
AM486DX2	3 & 4	Open	Open	Open
CX486DX2	2 & 3	2 & 3	2 & 3	Open
80486DX2	3 & 4	Open	Open	Open
CX486DX4	2 & 3	2 & 3	2 & 3	Open
AM486DX4	1 & 2, 3 & 4	Open	1 & 2	Open
AM486DX4 (WB)	1 & 2, 3 & 4	Open	1 & 2	Open
AM486DX4 (WT)	3 & 4	Open	Open	Open
80486DX4 (WB)	1 & 2, 3 & 4	Open	1 & 2	Open
80486DX4 (WT)	3 & 4	Open	Open	Open
P24D	1 & 2, 3 & 4	Open	1 & 2	Open
P24T	3 & 4	1 & 2	1 & 2	Open
CX5X86	1 & 2, 3 & 4	Open	1 & 2	Open
AM5X86	1 & 2, 3 & 4	Open	1 & 2	2 & 3
Note: Pins designated should be in the closed position.

CPU VOLTAGE CONFIGURATION
Voltage	JP31	JP32	JP34
3.3v	Pins 2 & 3 closed	Pins 5 & 6 closed	Pins 2 & 3 closed
3.45v	Pins 2 & 3 closed	Pins 3 & 4 closed	Pins 2 & 3 closed
4v	Pins 2 & 3 closed	Pins 1 & 2 closed	Pins 2 & 3 closed
5v	Pins 1 & 2 closed	N/A	Pins 1 & 2 closed

GREEN PC CONFIGURATION
Setting	JP36
Doze mode	Pins 1 & 2 closed
Suspend mode	Pins 3 & 4 closed
Standby mode	Pins 5 & 6, 7 & 8 closed

CMOS CONFIGURATION
Setting	JP2	JP3
CMOS memory normal operation	Pins 1 & 2 closed	Pins 1 & 2 closed
CMOS memory clear	Pins 2 & 3 closed	Pins 2 & 3 closed

DAM CHANNEL SELECTION
Channel	JP18	JP22
1	Pins 1 & 3 closed	Pins 1 & 3 closed
3	Pins 2 & 4 closed	Pins 2 & 4 closed