SW-486VM Motherboard Settings and Configuration

SKYWELL TECHNOLOGY CORPORATION, LTD.

SW-486VM

Processor
UMCSX/80486DX/AM486DX2/80486DX2/TI486DX4/AM486DX4/ 8046DX4/CX5X86/AM5X86
Processor Speed
25/33/40/50(internal)/50/66(internal)/75(internal)/100(internal)MHz
Chip Set
VIA
Video Chip Set
None
Maximum Onboard Memory
128MB (EDO supported)
Maximum Video Memory
None
Cache
128/256/512/1024KB
BIOS
Award
Dimensions
250mm x 220mm
I/O Options
32-bit PCI slots (3), floppy drive interface, game interface, IDE interfaces (2), parallel port, PS/2 mouse port, PS/2 mouse interface, serial ports (2)
NPU Options
None

CONNECTIONS
Purpose
Location
Purpose
Location
PS/2 mouse interface
CN1
External battery
JBA1
PS/2 mouse port
CN3
External battery
JBA2
Game interface
CN5
Power LED & keylock
JW1
Parallel port
CN7
Turbo LED
JW2
Floppy drive interface
CN8
Speaker
JW3
Serial port 1
CN9
Turbo switch
JW4
IDE interface 1
CN10
Reset switch
JW5
IDE interface 2
CN11
IDE interface LED
JW6
Serial port 2
CN12
32-bit PCI slots
PC1 - PC3

USER CONFIGURABLE SETTINGS
Function
Label
Position
»
Factory configured - do not alter
J104
Unidentified
»
Factory configured - do not alter
J105
Unidentified
»
Factory configured - do not alter
J106
Unidentified
»
Factory configured - do not alter
JIDE
Unidentified
»
Factory configured - do not alter
JG1
Unidentified
»
Factory configured - do not alter
JG2
Unidentified
»
Factory configured - do not alter
JG3
Unidentified
»
Factory configured - do not alter
JG4
Unidentified
»
Factory configured - do not alter
JM5
Unidentified
»
Factory configured - do not alter
JMS2
Unidentified
»
Factory configured - do not alter
JT1
Unidentified
»
Factory configured - do not alter
JT4
Unidentified

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
5MB
(1) 256K x 36
(1) 512K x 36
(1) 512K x 36
None
5MB
(1) 256K x 36
(1) 1M x 36
None
None
6MB
(1) 1M x 36
(1) 256K x 36
(1) 256K x 36
None

DRAM CONFIGURATION (CON’T)
Size
Bank 0
Bank 1
Bank 2
Bank 3
6MB
(1) 1M x 36
(1) 512K x 36
None
None
6MB
(1) 512K x 36
(1) 512K x 36
(1) 512K x 36
None
6MB
(1) 512K x 36
(1) 1M x 36
None
None
7MB
(1) 1M x 36
(1) 256K x 36
(1) 256K x 36
(1) 256K x 36
7MB
(1) 256K x 36
(1) 512K x 36
(1) 512K x 36
(1) 512K 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
9MB
(1) 256K x 36
(1) 1M x 36
(1) 1M x 36
None
9MB
(1) 256K x 36
(1) 2M 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
10MB
(1) 512K x 36
(1) 1M x 36
(1) 1M x 36
None
10MB
(1) 512K x 36
(1) 2M x 36
None
None
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
12MB
(1) 1M x 36
(1) 2M x 36
None
None
13MB
(1) 256K x 36
(1) 1M x 36
(1) 1M x 36
(1) 1M x 36
14MB
(1) 2M x 36
(1) 512K x 36
(1) 512K x 36
(1) 512K x 36
14MB
(1) 512K x 36
(1) 1M x 36
(1) 1M x 36
(1) 1M x 36
16MB
(1) 4M x 36
None
None
None
16MB
(1) 2M x 36
(1) 1M x 36
(1) 1M x 36
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
17MB
(1) 256K x 36
(1) 2M x 36
(1) 2M x 36
None
17MB
(1) 256K x 36
(1) 4M 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
18MB
(1) 512K x 36
(1) 2M x 36
(1) 2M x 36
None
18MB
(1) 512K x 36
(1) 4M 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
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

DRAM CONFIGURATION (CON’T)
Size
Bank 0
Bank 1
Bank 2
Bank 3
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
25MB
(1) 256K x 36
(1) 2M x 36
(1) 2M x 36
(1) 2M x 36
26MB
(1) 512K x 36
(1) 2M x 36
(1) 2M x 36
(1) 2M x 36
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
33MB
(1) 256K x 36
(1) 4M x 36
(1) 4M x 36
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
34MB
(1) 512K x 36
(1) 4M x 36
(1) 4M x 36
None
34MB
(1) 512K x 36
(1) 8M x 36
None
None
35MB
(1) 8M x 36
(1) 256K x 36
(1) 256K x 36
(1) 256K x 36
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
36MB
(1) 1M x 36
(1) 4M x 36
(1) 4M x 36
None
36MB
(1) 1M x 36
(1) 8M 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
40MB
(1) 2M x 36
(1) 4M x 36
(1) 4M x 36
None
40MB
(1) 2M x 36
(1) 8M x 36
None
None
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
49MB
(1) 256K x 36
(1) 4M x 36
(1) 4M x 36
(1) 4M x 36
50MB
(1) 512K x 36
(1) 4M x 36
(1) 4M x 36
(1) 4M x 36
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
56MB
(1) 2M x 36
(1) 4M x 36
(1) 4M x 36
(1) 4M 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
65MB
(1) 256K x 36
(1) 8M x 36
(1) 8M x 36
None
66MB
(1) 512K x 36
(1) 8M x 36
(1) 8M x 36
None

DRAM CONFIGURATION (CON’T)
Size
Bank 0
Bank 1
Bank 2
Bank 3
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
80MB
(1) 4M x 36
(1) 8M x 36
(1) 8M x 36
None
96MB
(1) 8M x 36
(1) 8M x 36
(1) 8M x 36
None
97MB
(1) 256K x 36
(1) 8M x 36
(1) 8M x 36
(1) 8M x 36
98MB
(1) 512K x 36
(1) 8M x 36
(1) 8M x 36
(1) 8M x 36
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) 16M x 36
(1) 16M x 36
None
None
128MB
(1) 8M x 36
(1) 8M x 36
(1) 8M x 36
(1) 8M x 36

CACHE CONFIGURATION
Size
Bank 0
Bank 1
TAG
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
512KB (A)
(4) 64K x 8
(4) 64K x 8
(1) 32K x 8
512KB (B)
(4) 128K x 8
None
(1) 32K x 8
1MB
(4) 128K x 8
(4) 128K x 8
(1) 64K x 8

CACHE JUMPER CONFIGURATION
Size
JS1
JS2
JS3
JS4
JS5
JS6
128KB
1 & 2
1 & 2
1 & 2
2 & 3
1 & 2
1 & 2
256KB (A)
2 & 3
1 & 2
1 & 2
1 & 2
1 & 2
1 & 2
256KB (B)
2 & 3
1 & 2
1 & 2
1 & 2
2 & 3
1 & 2
512KB (A)
2 & 3
2 & 3
1 & 2
1 & 2
1 & 2
1 & 2
512KB (B)
2 & 3
2 & 3
1 & 2
1 & 2
1 & 2
2 & 3
1MB
2 & 3
2 & 3
2 & 3
1 & 2
1 & 2
1 & 2
Note: Pins designated should be in the closed position.

CPU SPEED SELECTION
Speed
JCK1
JCK2
JCK3
JCK4
25MHz
Pins 2 & 3 closed
Pins 1 & 2 closed
Pins 2 & 3 closed
Pins 1 & 2 closed
33MHz
Pins 2 & 3 closed
Pins 2 & 3 closed
Pins 1 & 2 closed
Pins 1 & 2 closed
40MHz
Pins 1 & 2 closed
Pins 1 & 2 closed
Pins 2 & 3 closed
Pins 1 & 2 closed
50iMHz
Pins 2 & 3 closed
Pins 1 & 2 closed
Pins 2 & 3 closed
Pins 1 & 2 closed
50MHz
Pins 2 & 3 closed
Pins 1 & 2 closed
Pins 2 & 3 closed
Pins 1 & 2 closed
66iMHz
Pins 2 & 3 closed
Pins 2 & 3 closed
Pins 1 & 2 closed
Pins 1 & 2 closed
75iMHz
Pins 2 & 3 closed
Pins 1 & 2 closed
Pins 2 & 3 closed
Pins 1 & 2 closed
100iMHz
Pins 2 & 3 closed
Pins 2 & 3 closed
Pins 1 & 2 closed
Pins 1 & 2 closed

CPU TYPE SELECTION
Type
JC1
JC2
JC3
JC4
JC5
JT2
JT3
UMC SX
1 & 2
2 & 3
1 & 2
Open
Open
Open
Open
80486DX2
1 & 2
1 & 2
1 & 2
Open
Open
Open
Open
AM486DX2
1 & 2
1 & 2
1 & 2
Open
Closed
Open
2 & 3
80486DX2
1 & 2
1 & 2
1 & 2
Open
Open
Open
Open
TI486DX4
1 & 2
1 & 2
1 & 2
Open
Open
Open
Open
AM486DX4
1 & 2
1 & 2
1 & 2
Open
Open
Open
Open
80486DX4
1 & 2
1 & 2
1 & 2
Closed
Open
Open
Open
CX 5X86
1 & 2
1 & 2
1 & 2
Open
Open
Open
2 & 3
AM 5X86
1 & 2
1 & 2
1 & 2
Open
Open
Open
Open
Note: Pins designated should be in the closed position.

CPU VOLTAGE SELECTION
Voltage
JPW1
JPW2
3.3v
Pins 7 & 8 closed
Pins 2 & 3 closed
3.45v
Pins 5 & 6 closed
Pins 2 & 3 closed
3.6v
Pins 3 & 4 closed
Pins 2 & 3 closed
4v
Pins 1 & 2 closed
Pins 2 & 3 closed
5v
Open
Pins 1 & 2 closed

BATTERY SELECTION
Setting
JBA1
JBA2
External
Pins 3 & 4 closed
Open
Internal
Pins 2 & 3 closed
Open
CMOS normal operation
Pins 2 & 3 closed
Closed
CMOS memory clear
Pins 3 & 4 closed
N/A

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SW-486VM Motherboard Settings and Configuration

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Processor	UMCSX/80486DX/AM486DX2/80486DX2/TI486DX4/AM486DX4/ 8046DX4/CX5X86/AM5X86
Processor Speed	25/33/40/50(internal)/50/66(internal)/75(internal)/100(internal)MHz
Chip Set	VIA
Video Chip Set	None
Maximum Onboard Memory	128MB (EDO supported)
Maximum Video Memory	None
Cache	128/256/512/1024KB
BIOS	Award
Dimensions	250mm x 220mm
I/O Options	32-bit PCI slots (3), floppy drive interface, game interface, IDE interfaces (2), parallel port, PS/2 mouse port, PS/2 mouse interface, serial ports (2)
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
PS/2 mouse interface	CN1	External battery	JBA1
PS/2 mouse port	CN3	External battery	JBA2
Game interface	CN5	Power LED & keylock	JW1
Parallel port	CN7	Turbo LED	JW2
Floppy drive interface	CN8	Speaker	JW3
Serial port 1	CN9	Turbo switch	JW4
IDE interface 1	CN10	Reset switch	JW5
IDE interface 2	CN11	IDE interface LED	JW6
Serial port 2	CN12	32-bit PCI slots	PC1 - PC3

USER CONFIGURABLE SETTINGS
Function		Label	Position
»	Factory configured - do not alter	J104	Unidentified
»	Factory configured - do not alter	J105	Unidentified
»	Factory configured - do not alter	J106	Unidentified
»	Factory configured - do not alter	JIDE	Unidentified
»	Factory configured - do not alter	JG1	Unidentified
»	Factory configured - do not alter	JG2	Unidentified
»	Factory configured - do not alter	JG3	Unidentified
»	Factory configured - do not alter	JG4	Unidentified
»	Factory configured - do not alter	JM5	Unidentified
»	Factory configured - do not alter	JMS2	Unidentified
»	Factory configured - do not alter	JT1	Unidentified
»	Factory configured - do not alter	JT4	Unidentified

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
5MB	(1) 256K x 36	(1) 512K x 36	(1) 512K x 36	None
5MB	(1) 256K x 36	(1) 1M x 36	None	None
6MB	(1) 1M x 36	(1) 256K x 36	(1) 256K x 36	None

DRAM CONFIGURATION (CON’T)
Size	Bank 0	Bank 1	Bank 2	Bank 3
6MB	(1) 1M x 36	(1) 512K x 36	None	None
6MB	(1) 512K x 36	(1) 512K x 36	(1) 512K x 36	None
6MB	(1) 512K x 36	(1) 1M x 36	None	None
7MB	(1) 1M x 36	(1) 256K x 36	(1) 256K x 36	(1) 256K x 36
7MB	(1) 256K x 36	(1) 512K x 36	(1) 512K x 36	(1) 512K 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
9MB	(1) 256K x 36	(1) 1M x 36	(1) 1M x 36	None
9MB	(1) 256K x 36	(1) 2M 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
10MB	(1) 512K x 36	(1) 1M x 36	(1) 1M x 36	None
10MB	(1) 512K x 36	(1) 2M x 36	None	None
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
12MB	(1) 1M x 36	(1) 2M x 36	None	None
13MB	(1) 256K x 36	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36
14MB	(1) 2M x 36	(1) 512K x 36	(1) 512K x 36	(1) 512K x 36
14MB	(1) 512K x 36	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36
16MB	(1) 4M x 36	None	None	None
16MB	(1) 2M x 36	(1) 1M x 36	(1) 1M x 36	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
17MB	(1) 256K x 36	(1) 2M x 36	(1) 2M x 36	None
17MB	(1) 256K x 36	(1) 4M 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
18MB	(1) 512K x 36	(1) 2M x 36	(1) 2M x 36	None
18MB	(1) 512K x 36	(1) 4M 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
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

CACHE CONFIGURATION
Size	Bank 0	Bank 1	TAG
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
512KB (A)	(4) 64K x 8	(4) 64K x 8	(1) 32K x 8
512KB (B)	(4) 128K x 8	None	(1) 32K x 8
1MB	(4) 128K x 8	(4) 128K x 8	(1) 64K x 8

CACHE JUMPER CONFIGURATION
Size	JS1	JS2	JS3	JS4	JS5	JS6
128KB	1 & 2	1 & 2	1 & 2	2 & 3	1 & 2	1 & 2
256KB (A)	2 & 3	1 & 2	1 & 2	1 & 2	1 & 2	1 & 2
256KB (B)	2 & 3	1 & 2	1 & 2	1 & 2	2 & 3	1 & 2
512KB (A)	2 & 3	2 & 3	1 & 2	1 & 2	1 & 2	1 & 2
512KB (B)	2 & 3	2 & 3	1 & 2	1 & 2	1 & 2	2 & 3
1MB	2 & 3	2 & 3	2 & 3	1 & 2	1 & 2	1 & 2
Note: Pins designated should be in the closed position.

CPU SPEED SELECTION
Speed	JCK1	JCK2	JCK3	JCK4
25MHz	Pins 2 & 3 closed	Pins 1 & 2 closed	Pins 2 & 3 closed	Pins 1 & 2 closed
33MHz	Pins 2 & 3 closed	Pins 2 & 3 closed	Pins 1 & 2 closed	Pins 1 & 2 closed
40MHz	Pins 1 & 2 closed	Pins 1 & 2 closed	Pins 2 & 3 closed	Pins 1 & 2 closed
50iMHz	Pins 2 & 3 closed	Pins 1 & 2 closed	Pins 2 & 3 closed	Pins 1 & 2 closed
50MHz	Pins 2 & 3 closed	Pins 1 & 2 closed	Pins 2 & 3 closed	Pins 1 & 2 closed
66iMHz	Pins 2 & 3 closed	Pins 2 & 3 closed	Pins 1 & 2 closed	Pins 1 & 2 closed
75iMHz	Pins 2 & 3 closed	Pins 1 & 2 closed	Pins 2 & 3 closed	Pins 1 & 2 closed
100iMHz	Pins 2 & 3 closed	Pins 2 & 3 closed	Pins 1 & 2 closed	Pins 1 & 2 closed

CPU TYPE SELECTION
Type	JC1	JC2	JC3	JC4	JC5	JT2	JT3
UMC SX	1 & 2	2 & 3	1 & 2	Open	Open	Open	Open
80486DX2	1 & 2	1 & 2	1 & 2	Open	Open	Open	Open
AM486DX2	1 & 2	1 & 2	1 & 2	Open	Closed	Open	2 & 3
80486DX2	1 & 2	1 & 2	1 & 2	Open	Open	Open	Open
TI486DX4	1 & 2	1 & 2	1 & 2	Open	Open	Open	Open
AM486DX4	1 & 2	1 & 2	1 & 2	Open	Open	Open	Open
80486DX4	1 & 2	1 & 2	1 & 2	Closed	Open	Open	Open
CX 5X86	1 & 2	1 & 2	1 & 2	Open	Open	Open	2 & 3
AM 5X86	1 & 2	1 & 2	1 & 2	Open	Open	Open	Open
Note: Pins designated should be in the closed position.

CPU VOLTAGE SELECTION
Voltage	JPW1	JPW2
3.3v	Pins 7 & 8 closed	Pins 2 & 3 closed
3.45v	Pins 5 & 6 closed	Pins 2 & 3 closed
3.6v	Pins 3 & 4 closed	Pins 2 & 3 closed
4v	Pins 1 & 2 closed	Pins 2 & 3 closed
5v	Open	Pins 1 & 2 closed

BATTERY SELECTION
Setting	JBA1	JBA2
External	Pins 3 & 4 closed	Open
Internal	Pins 2 & 3 closed	Open
CMOS normal operation	Pins 2 & 3 closed	Closed
CMOS memory clear	Pins 3 & 4 closed	N/A