CH-471B Motherboard Settings and Configuration

CHICONY, INC.

CH-471B

Processor
CX486S/80486SX/SL80486SX/SL80486SX2/CX486DX/AM486DX/SL80486DX/80486DX/CX486DX2/AM486DX2/SL80486DX2/80486DX2/80486DX4/P24D/ Pentium Overdrive
Processor Speed
25/33/40/50(internal)/50/66(internal)/75(internal)/100(internal)MHz
Chip Set
SIS
Max. Onboard DRAM
128MB
Cache
32/64/128/256/512/1024KB
BIOS
Award
Dimensions
330mm x 218mm
I/O Options
32-bit VESA local bus slots (2), floppy drive interface, game port, green PC connector, IDE interfaces (2), parallel port, serial ports (2)
NPU Options
None

CONNECTIONS
Purpose
Location
Purpose
Location
Green PC connector
J1
Reset switch
J13
Floppy drive interface
J4
Turbo switch
J14
Serial port 2
J5
Turbo LED
J15
IDE interface (VESA)
J6
Speaker
J16
Serial port 1
J7
Green PC connector
J17
Game interface
J8
Power LED & keylock
J18
Parallel port
J9
Green PC connector
J19
IDE interface (ISA)
J10
Voltage connector
P4
External battery
J11
32-bit VESA local bus slots
SL1 & SL2
IDE interface LED
J12

USER CONFIGURABLE SETTINGS
Function
Jumper
Position
»
CMOS memory normal operation
JP1
pins 1 & 2 closed

CMOS memory clear
JP1
pins 2 & 3 closed
»
Floppy drive interface enabled
JP6
pins 1 & 2 closed

Floppy drive interface disabled
JP6
pins 2 & 3 closed
»
IDE interface enabled (ISA)
JP7
pins 1 & 2 closed

IDE interface disabled (ISA)
JP7
pins 2 & 3 closed
»
Game port enabled
JP10
pins 1 & 2 closed

Game port disabled
JP10
pins 2 & 3 closed
»
Floppy drive address range select 3F0 to 3F7
JP11
pins 2 & 3 closed

Floppy drive address range select 370 to 377
JP11
pins 1 & 2 closed
»
ISA IDE address range select 170
JP12
pins 1 & 2 closed

ISA IDE address range select 1F0
JP12
pins 2 & 3 closed
»
ISA IDE IRQ select IRQ15
JP32
pins 1 & 2 closed

ISA IDE IRQ select IRQ14
JP32
pins 2 & 3 closed
»
Parallel port IRQ select IRQ7
JP30
pins 2 & 3 closed

Parallel port IRQ select IRQ5
JP30
pins 1 & 2 closed
»
IDE interface enabled (VESA)
JP38
pins 1 & 2 closed

IDE interface disabled (VESA)
JP38
pins 2 & 3 closed
»
Factory configured - do not alter
JP44
N/A

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

DRAM CONFIGURATION (CON’T)
Size
Bank 0
Bank 1
Bank 2
Bank 3
8MB
(1) 256K x 36
(1) 256K x 36
(1) 512K x 36
(1) 1M x 36
8MB
(1) 512K x 36
(1) 512K x 36
(1) 1M x 36
NONE
8MB
(1) 1M x 36
(1) 1M x 36
NONE
NONE
8MB
(1) 2M x 36
NONE
NONE
NONE
10MB
(1) 256K x 36
(1) 256K x 36
(1) 1M x 36
(1) 1M x 36
12MB
(1) 512K x 36
(1) 512K x 36
(1) 1M x 36
(1) 1M x 36
12MB
(1) 1M x 36
(1) 1M x 36
(1) 1M x 36
NONE
18MB
(1) 256K x 36
(1) 256K x 36
(1) 4M x 36
NONE
16MB
(1) 1M x 36
(1) 1M x 36
(1) 1M x 36
(1) 1M x 36
16MB
(1) 2M x 36
(1) 2M x 36
NONE
NONE
16MB
(1) 4M x 36
NONE
NONE
NONE
17MB
(1) 256K x 36
(1) 4M x 36
NONE
NONE
18MB
(1) 512K x 36
(1) 4M x 36
NONE
NONE
20MB
(1) 512K x 36
(1) 512K x 36
(1) 4M x 36
NONE
20MB
(1) 1M x 36
(1) 4M x 36
NONE
NONE
24MB
(1) 512K x 36
(1) 512K x 36
(1) 1M x 36
(1) 4M x 36
24MB
(1) 1M x 36
(1) 1M x 36
(1) 4M x 36
NONE
24MB
(1) 2M 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
32MB
(1) 8M x 36
NONE
NONE
NONE
36MB
(1) 512K x 36
(1) 512K x 36
(1) 4M x 36
(1) 4M x 36
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
40MB
(1) 1M x 36
(1) 1M x 36
(1) 4M x 36
(1) 4M x 36
40MB
(1) 1M x 36
(1) 1M x 36
(1) 8M x 36
NONE
48MB
(1) 4M x 36
(1) 4M x 36
(1) 4M x 36
NONE
48MB
(1) 4M 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
64MB
(1) 4M x 36
(1) 4M x 36
(1) 8M x 36
NONE
64MB
(1) 16M x 36
NONE
NONE
NONE
64MB
(1) 8M x 36
(1) 8M x 36
NONE
NONE
65MB
(1) 256K x 36
(1) 16M x 36
NONE
NONE
68MB
(1) 1M x 36
(1) 16M x 36
NONE
NONE
68MB
(1) 1M x 36
(1) 8M x 36
(1) 8M x 36
NONE
72MB
(1) 1M x 36
(1) 1M x 36
(1) 8M x 36
(1) 8M x 36
72MB
(1) 1M x 36
(1) 1M x 36
(1) 16M x 36
NONE
80MB
(1) 4M x 36
(1) 16M x 36
NONE
NONE
80MB
(1) 4M x 36
(1) 8M x 36
(1) 8M x 36
NONE
96MB
(1) 4M x 36
(1) 4M x 36
(1) 8M x 36
(1) 8M x 36
96MB
(1) 8M x 36
(1) 8M x 36
(1) 8M x 36
NONE
96MB
(1) 4M x 36
(1) 4M x 36
(1) 16M x 36
NONE
128MB
(1) 8M 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

CACHE CONFIGURATION
Size
Bank 0
Bank 1
TAG
32KB
(4) 8K x 8
NONE
(1) 2K x 8
64KB
(4) 8K x 8
(4) 8K x 8
(1) 4K 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
512KB
(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
JP21
JP22
JP23
JP24
JP25
JP26
JP27
JP28
32KB
1 & 2
1 & 2
1 & 2
1 & 2
2 & 3
2 & 3
2 & 3
2 & 3
64KB
2 & 3
1 & 2
2 & 3
2 & 3
2 & 3
2 & 3
2 & 3
1 & 2
128KB
1 & 2
2 & 3
1 & 2
1 & 2
2 & 3
2 & 3
1 & 2
1 & 2
256KB
2 & 3
2 & 3
2 & 3
2 & 3
2 & 3
1 & 2
1 & 2
1 & 2
512KB
1 & 2
2 & 3
1 & 2
1 & 2
1 & 2
1 & 2
1 & 2
1 & 2
1MB
2 & 3
2 & 3
2 & 3
2 & 3
1 & 2
1 & 2
1 & 2
1 & 2
Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION
Type
JP39
JP42
JP45
JP46
CX486S
7 & 8, 9 & 10, 11 & 12
Open
Open
Open
80486SX
Open
Open
2 & 3
2 & 3
SL80486SX
7 & 8, 9 & 10, 11 & 12
Open
1 & 2
2 & 3
SL80486SX2
7 & 8, 9 & 10, 11 & 12
Open
1 & 2
2 & 3
CX486DX
7 & 8, 9 & 10, 11 & 12
Open
Open
Open
AM486DX
Open
Open
2 & 3
2 & 3
SL80486DX
7 & 8, 9 & 10, 11 & 12
Open
1 & 2
2 & 3
80486DX
Open
Open
2 & 3
2 & 3
CX486DX2
7 & 8, 9 & 10, 11 & 12
Open
Open
Open
AM486DX2
Open
Open
2 & 3
2 & 3
SL80486DX2
7 & 8, 9 & 10, 11 & 12
Open
1 & 2
2 & 3
80486DX2
Open
Open
2 & 3
2 & 3
80486DX4
7 & 8, 9 & 10, 11 & 12
Open
1 & 2
2 & 3
P24D
7 & 8, 9 & 10, 11 & 12
Open
Open
Open
P24T
7 & 8, 9 & 10, 11 & 12
Open
Open
Open
Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION (CON’T)
Type
JP47
JP48
JP49
JP53
JP54
CX486S
Open
Open
Open
Closed
2 & 3
80486SX
2 & 3
2 & 3
2 & 3
Open
2 & 3
SL80486SX
2 & 3
2 & 3
2 & 3
Closed
2 & 3
SL80486SX2
2 & 3
2 & 3
2 & 3
Closed
2 & 3
CX486DX
Open
Open
Open
Closed
2 & 3
AM486DX
2 & 3
2 & 3
2 & 3
Open
2 & 3

CPU TYPE CONFIGURATION (CON’T)
Type
JP47
JP48
JP49
JP53
JP54
SL80486DX
2 & 3
2 & 3
2 & 3
Closed
2 & 3
80486DX
2 & 3
2 & 3
2 & 3
Open
2 & 3
CX486DX2
Open
Open
Open
Closed
2 & 3
AM486DX2
2 & 3
2 & 3
2 & 3
Open
2 & 3
SL80486DX2
2 & 3
2 & 3
2 & 3
Closed
2 & 3
80486DX2
2 & 3
2 & 3
2 & 3
Open
2 & 3
80486DX4
2 & 3
2 & 3
2 & 3
Closed
1 & 2
P24D
Open
Open
Open
Closed
2 & 3
P24T
Open
Open
Open
Closed
2 & 3
Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION
Type
JP19
JP20
Intel/AMD
pins 1 & 2 closed
pins 2 & 3 closed
Cyrix
pins 2 & 3 closed
pins 1 & 2 closed
Intel P24D/P24T
pins 1 & 2 closed
pins 1 & 2 closed

CPU TYPE CONFIGURATION
Type
JP40
JP41
JP55
80487SX
pins 1 & 2, 3 & 4 closed
pins 2 & 3 closed
Open
80486SX/CX M6/UMC U5S
pins 2 & 3 closed
Open
Open
CX M7
pins 1 & 2, 3 & 4 closed
pins 1 & 2 closed
Closed
Intel/AMD/Cyrix
pins 1 & 2, 3 & 4 closed
pins 1 & 2 closed
Open

CPU SPEED CONFIGURATION
Speed
JP36
JP37
25MHz
Open
Open
33MHz
Closed
Closed
40MHz
Open
Closed
50MHz
Closed
Open
50iMHz
Open
Open
66iMHz
Closed
Closed
75iMHz
Open
Open
100iMHz
Closed
Closed

CPU SPEED CONFIGURATION
Speed
JP50
2x
pins 2 & 3 closed
2.5x
pins 1 & 2 closed
3x
Open

CPU VOLTAGE CONFIGURATION
Voltage
P3
3.3v
pins 1 & 2, 4 & 5, 6 & 7 closed
5v
pins 2 & 3, 5 & 6, 8 & 9 closed

VESA WAIT STATE CONFIGURATION
Wait states
JP52
0 wait states
Open
1 wait state
Closed

BUS SPEED CONFIGURATION
CPU speed
JP51
<= 33MHz
Open
> 33MHz
Closed

PARLLEL PORT CONFIGURATION
Address
JP8
JP9
378
pins 1 & 2 closed
pins 2 & 3 closed
278
pins 1 & 2 closed
pins 1 & 2 closed
3BC
pins 2 & 3 closed
pins 1 & 2 closed
Disabled
pins 2 & 3 closed
pins 2 & 3 closed

SERIAL PORT 1 CONFIGURATION
Address
JP2
JP3
3F8
pins 1 & 2 closed
pins 1 & 2 closed
2F8
pins 1 & 2 closed
pins 2 & 3 closed
3E8
pins 2 & 3 closed
pins 1 & 2 closed
Disabled
pins 2 & 3 closed
pins 2 & 3 closed

SERIAL PORT 2 CONFIGURATION
Address
JP4
JP5
2F8
pins 1 & 2 closed
pins 1 & 2 closed
3F8
pins 1 & 2 closed
pins 2 & 3 closed
3E8
pins 2 & 3 closed
pins 1 & 2 closed
Disabled
pins 2 & 3 closed
pins 2 & 3 closed

SERIAL PORT IRQ CONFIGURATION
COM1
COM2
JP29
IRQ3
IRQ4
pins 1 & 2, 3 & 4 closed
IRQ4
IRQ3
pins 1 & 3, 2 & 4 closed

FLOPPY DRIVE MEDIA CONFIGURATION
Setting
JP17
JP18
All floppy types
pins 1 & 2 closed
pins 1 & 2 closed
2.88MB only
pins 2 & 3 closed
pins 2 & 3 closed

Headaches Begone! A Systemic Approach To Healing Your Headaches

Don't Let Your Bike Seat Ruin Your Sex Life Book

CH-471B Motherboard Settings and Configuration

Search

My Books

Discover

Processor	CX486S/80486SX/SL80486SX/SL80486SX2/CX486DX/AM486DX/SL80486DX/80486DX/CX486DX2/AM486DX2/SL80486DX2/80486DX2/80486DX4/P24D/ Pentium Overdrive
Processor Speed	25/33/40/50(internal)/50/66(internal)/75(internal)/100(internal)MHz
Chip Set	SIS
Max. Onboard DRAM	128MB
Cache	32/64/128/256/512/1024KB
BIOS	Award
Dimensions	330mm x 218mm
I/O Options	32-bit VESA local bus slots (2), floppy drive interface, game port, green PC connector, IDE interfaces (2), parallel port, serial ports (2)
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
Green PC connector	J1	Reset switch	J13
Floppy drive interface	J4	Turbo switch	J14
Serial port 2	J5	Turbo LED	J15
IDE interface (VESA)	J6	Speaker	J16
Serial port 1	J7	Green PC connector	J17
Game interface	J8	Power LED & keylock	J18
Parallel port	J9	Green PC connector	J19
IDE interface (ISA)	J10	Voltage connector	P4
External battery	J11	32-bit VESA local bus slots	SL1 & SL2
IDE interface LED	J12

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	CMOS memory normal operation	JP1	pins 1 & 2 closed
	CMOS memory clear	JP1	pins 2 & 3 closed
»	Floppy drive interface enabled	JP6	pins 1 & 2 closed
	Floppy drive interface disabled	JP6	pins 2 & 3 closed
»	IDE interface enabled (ISA)	JP7	pins 1 & 2 closed
	IDE interface disabled (ISA)	JP7	pins 2 & 3 closed
»	Game port enabled	JP10	pins 1 & 2 closed
	Game port disabled	JP10	pins 2 & 3 closed
»	Floppy drive address range select 3F0 to 3F7	JP11	pins 2 & 3 closed
	Floppy drive address range select 370 to 377	JP11	pins 1 & 2 closed
»	ISA IDE address range select 170	JP12	pins 1 & 2 closed
	ISA IDE address range select 1F0	JP12	pins 2 & 3 closed
»	ISA IDE IRQ select IRQ15	JP32	pins 1 & 2 closed
	ISA IDE IRQ select IRQ14	JP32	pins 2 & 3 closed
»	Parallel port IRQ select IRQ7	JP30	pins 2 & 3 closed
	Parallel port IRQ select IRQ5	JP30	pins 1 & 2 closed
»	IDE interface enabled (VESA)	JP38	pins 1 & 2 closed
	IDE interface disabled (VESA)	JP38	pins 2 & 3 closed
»	Factory configured - do not alter	JP44	N/A

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

DRAM CONFIGURATION (CON’T)
Size	Bank 0	Bank 1	Bank 2	Bank 3
8MB	(1) 256K x 36	(1) 256K x 36	(1) 512K x 36	(1) 1M x 36
8MB	(1) 512K x 36	(1) 512K x 36	(1) 1M x 36	NONE
8MB	(1) 1M x 36	(1) 1M x 36	NONE	NONE
8MB	(1) 2M x 36	NONE	NONE	NONE
10MB	(1) 256K x 36	(1) 256K x 36	(1) 1M x 36	(1) 1M x 36
12MB	(1) 512K x 36	(1) 512K x 36	(1) 1M x 36	(1) 1M x 36
12MB	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36	NONE
18MB	(1) 256K x 36	(1) 256K x 36	(1) 4M x 36	NONE
16MB	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36
16MB	(1) 2M x 36	(1) 2M x 36	NONE	NONE
16MB	(1) 4M x 36	NONE	NONE	NONE
17MB	(1) 256K x 36	(1) 4M x 36	NONE	NONE
18MB	(1) 512K x 36	(1) 4M x 36	NONE	NONE
20MB	(1) 512K x 36	(1) 512K x 36	(1) 4M x 36	NONE
20MB	(1) 1M x 36	(1) 4M x 36	NONE	NONE
24MB	(1) 512K x 36	(1) 512K x 36	(1) 1M x 36	(1) 4M x 36
24MB	(1) 1M x 36	(1) 1M x 36	(1) 4M x 36	NONE
24MB	(1) 2M 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
32MB	(1) 8M x 36	NONE	NONE	NONE
36MB	(1) 512K x 36	(1) 512K x 36	(1) 4M x 36	(1) 4M x 36
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
40MB	(1) 1M x 36	(1) 1M x 36	(1) 4M x 36	(1) 4M x 36
40MB	(1) 1M x 36	(1) 1M x 36	(1) 8M x 36	NONE
48MB	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36	NONE
48MB	(1) 4M 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
64MB	(1) 4M x 36	(1) 4M x 36	(1) 8M x 36	NONE
64MB	(1) 16M x 36	NONE	NONE	NONE
64MB	(1) 8M x 36	(1) 8M x 36	NONE	NONE
65MB	(1) 256K x 36	(1) 16M x 36	NONE	NONE
68MB	(1) 1M x 36	(1) 16M x 36	NONE	NONE
68MB	(1) 1M x 36	(1) 8M x 36	(1) 8M x 36	NONE
72MB	(1) 1M x 36	(1) 1M x 36	(1) 8M x 36	(1) 8M x 36
72MB	(1) 1M x 36	(1) 1M x 36	(1) 16M x 36	NONE
80MB	(1) 4M x 36	(1) 16M x 36	NONE	NONE
80MB	(1) 4M x 36	(1) 8M x 36	(1) 8M x 36	NONE
96MB	(1) 4M x 36	(1) 4M x 36	(1) 8M x 36	(1) 8M x 36
96MB	(1) 8M x 36	(1) 8M x 36	(1) 8M x 36	NONE
96MB	(1) 4M x 36	(1) 4M x 36	(1) 16M x 36	NONE
128MB	(1) 8M 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

CACHE CONFIGURATION
Size	Bank 0	Bank 1	TAG
32KB	(4) 8K x 8	NONE	(1) 2K x 8
64KB	(4) 8K x 8	(4) 8K x 8	(1) 4K 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
512KB	(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	JP21	JP22	JP23	JP24	JP25	JP26	JP27	JP28
32KB	1 & 2	1 & 2	1 & 2	1 & 2	2 & 3	2 & 3	2 & 3	2 & 3
64KB	2 & 3	1 & 2	2 & 3	2 & 3	2 & 3	2 & 3	2 & 3	1 & 2
128KB	1 & 2	2 & 3	1 & 2	1 & 2	2 & 3	2 & 3	1 & 2	1 & 2
256KB	2 & 3	2 & 3	2 & 3	2 & 3	2 & 3	1 & 2	1 & 2	1 & 2
512KB	1 & 2	2 & 3	1 & 2	1 & 2	1 & 2	1 & 2	1 & 2	1 & 2
1MB	2 & 3	2 & 3	2 & 3	2 & 3	1 & 2	1 & 2	1 & 2	1 & 2
Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION
Type	JP39	JP42	JP45	JP46
CX486S	7 & 8, 9 & 10, 11 & 12	Open	Open	Open
80486SX	Open	Open	2 & 3	2 & 3
SL80486SX	7 & 8, 9 & 10, 11 & 12	Open	1 & 2	2 & 3
SL80486SX2	7 & 8, 9 & 10, 11 & 12	Open	1 & 2	2 & 3
CX486DX	7 & 8, 9 & 10, 11 & 12	Open	Open	Open
AM486DX	Open	Open	2 & 3	2 & 3
SL80486DX	7 & 8, 9 & 10, 11 & 12	Open	1 & 2	2 & 3
80486DX	Open	Open	2 & 3	2 & 3
CX486DX2	7 & 8, 9 & 10, 11 & 12	Open	Open	Open
AM486DX2	Open	Open	2 & 3	2 & 3
SL80486DX2	7 & 8, 9 & 10, 11 & 12	Open	1 & 2	2 & 3
80486DX2	Open	Open	2 & 3	2 & 3
80486DX4	7 & 8, 9 & 10, 11 & 12	Open	1 & 2	2 & 3
P24D	7 & 8, 9 & 10, 11 & 12	Open	Open	Open
P24T	7 & 8, 9 & 10, 11 & 12	Open	Open	Open
Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION (CON’T)
Type	JP47	JP48	JP49	JP53	JP54
CX486S	Open	Open	Open	Closed	2 & 3
80486SX	2 & 3	2 & 3	2 & 3	Open	2 & 3
SL80486SX	2 & 3	2 & 3	2 & 3	Closed	2 & 3
SL80486SX2	2 & 3	2 & 3	2 & 3	Closed	2 & 3
CX486DX	Open	Open	Open	Closed	2 & 3
AM486DX	2 & 3	2 & 3	2 & 3	Open	2 & 3

CPU TYPE CONFIGURATION
Type	JP19	JP20
Intel/AMD	pins 1 & 2 closed	pins 2 & 3 closed
Cyrix	pins 2 & 3 closed	pins 1 & 2 closed
Intel P24D/P24T	pins 1 & 2 closed	pins 1 & 2 closed

CPU TYPE CONFIGURATION
Type	JP40	JP41	JP55
80487SX	pins 1 & 2, 3 & 4 closed	pins 2 & 3 closed	Open
80486SX/CX M6/UMC U5S	pins 2 & 3 closed	Open	Open
CX M7	pins 1 & 2, 3 & 4 closed	pins 1 & 2 closed	Closed
Intel/AMD/Cyrix	pins 1 & 2, 3 & 4 closed	pins 1 & 2 closed	Open

CPU SPEED CONFIGURATION
Speed	JP36	JP37
25MHz	Open	Open
33MHz	Closed	Closed
40MHz	Open	Closed
50MHz	Closed	Open
50iMHz	Open	Open
66iMHz	Closed	Closed
75iMHz	Open	Open
100iMHz	Closed	Closed

CPU SPEED CONFIGURATION
Speed	JP50
2x	pins 2 & 3 closed
2.5x	pins 1 & 2 closed
3x	Open

CPU VOLTAGE CONFIGURATION
Voltage	P3
3.3v	pins 1 & 2, 4 & 5, 6 & 7 closed
5v	pins 2 & 3, 5 & 6, 8 & 9 closed

VESA WAIT STATE CONFIGURATION
Wait states	JP52
0 wait states	Open
1 wait state	Closed

BUS SPEED CONFIGURATION
CPU speed	JP51
<= 33MHz	Open
> 33MHz	Closed

PARLLEL PORT CONFIGURATION
Address	JP8	JP9
378	pins 1 & 2 closed	pins 2 & 3 closed
278	pins 1 & 2 closed	pins 1 & 2 closed
3BC	pins 2 & 3 closed	pins 1 & 2 closed
Disabled	pins 2 & 3 closed	pins 2 & 3 closed

SERIAL PORT 1 CONFIGURATION
Address	JP2	JP3
3F8	pins 1 & 2 closed	pins 1 & 2 closed
2F8	pins 1 & 2 closed	pins 2 & 3 closed
3E8	pins 2 & 3 closed	pins 1 & 2 closed
Disabled	pins 2 & 3 closed	pins 2 & 3 closed

SERIAL PORT 2 CONFIGURATION
Address	JP4	JP5
2F8	pins 1 & 2 closed	pins 1 & 2 closed
3F8	pins 1 & 2 closed	pins 2 & 3 closed
3E8	pins 2 & 3 closed	pins 1 & 2 closed
Disabled	pins 2 & 3 closed	pins 2 & 3 closed

SERIAL PORT IRQ CONFIGURATION
COM1	COM2	JP29
IRQ3	IRQ4	pins 1 & 2, 3 & 4 closed
IRQ4	IRQ3	pins 1 & 3, 2 & 4 closed

FLOPPY DRIVE MEDIA CONFIGURATION
Setting	JP17	JP18
All floppy types	pins 1 & 2 closed	pins 1 & 2 closed
2.88MB only	pins 2 & 3 closed	pins 2 & 3 closed