PCI400C-C Motherboard Settings and Configuration

J-BOND COMPUTER SYSTEMS CORPORATION

PCI400C-C

Processor
UMCU5S/UMCU5SD/SL80486SX/SL80486SX2/SL80486DX2/ CX486DX2/AM486DX2/AM486DXL2/SL80486DX2/SL80486DX2(ODP)/CX486DX4/AM486DX4/AM486DX4(WB)/SL80486DX4/P24T/CX5X86
Processor Speed
25/33/40/50(internal)/66(internal)/75(internal)/100(internal)MHz
Chip Set
SIS
Video Chip Set
None
Maximum Onboard Memory
128MB
Maximum Video Memory
None
Cache
128/256/512/1024KB
BIOS
Award
Dimensions
279mm x 220mm
I/O Options
32-bit PCI slots (3), floppy drive interface, game interface, green PC connector, IDE interfaces (2), parallel port, serial ports (2)
NPU Options
None

CONNECTIONS
Purpose
Location
Purpose
Location
Parallel port
CN1
Reset switch
J3
Game interface
CN2
Green PC connector
J4
Floppy drive interface
CN3
Turbo LED
J5
Serial port 2
CN4
Green PC LED
J6
Serial port 1
CN5
Turbo switch
J7
IDE interface
CN6
Power LED & keylock
J8
IDE interface
CN7
Green PC connector (I/O)
JP8
External battery
J1
32-bit PCI slots
PC1 - PC3
Speaker
J2

USER CONFIGURABLE SETTINGS
Function
Label
Position
»
Factory configured - do not alter
JC5
Open

CPU type select SL AM486DX4-120 WB (3v)
JC7
Open

CPU type select SL AM5X86-133 WB (3.45v)
JC7
Closed
»
Factory configured - do not alter
JP1
Unidentified
»
Green PC select STP.CLK
JP6
Pins 1 & 2 closed

Green PC select SMI OUT
JP6
Pins 2 & 3 closed
»
Flash BIOS normal operation
JP16
Pins 2 & 3, 4 & 5 closed

Flash BIOS update at boot
JP16
Pins 1 & 2, 5 & 6 closed
»
CMOS memory normal operation
JP17
Open

CMOS memory clear
JP17
Closed
»
Battery type select internal
JP18
Closed

Battery type select external
JP18
Open
»
Factory configured - do not alter
JP19
Unidentified
»
Parallel port IRQ select IRQ7
JP30
Pins 1 & 2 closed

Parallel port IRQ select IRQ5
JP30
Pins 2 & 3 closed
»
Floppy drive interface enabled
JP32
Pins 1 & 2 closed

Floppy drive interface disabled
JP32
Pins 2 & 3 closed
»
Game port enabled
JP35
Closed

Game port disabled
JP35
Open

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) 256K x 36
(1) 256K x 36
(1) 256K x 36
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

DRAM CONFIGURATION (CON’T)
Size
Bank 0
Bank 1
Bank 2
Bank 3
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
7MB
(1) 1M x 36
(1) 256K x 36
(1) 256K x 36
(1) 256K x 36
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
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) 512K 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
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) 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
20MB
(1) 4M x 36
(1) 1M x 36
None
None
28MB
(1) 4M x 36
(1) 1M x 36
(1) 1M x 36
(1) 1M x 36
32MB
(1) 8M x 36
None
None
None
32MB
(1) 4M x 36
(1) 4M x 36
None
None
33MB
(1) 256K x 36
(1) 8M 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
36MB
(1) 8M x 36
(1) 512K x 36
(1) 512K x 36
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
64MB
(1) 8M x 36
(1) 8M x 36
None
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) 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
Note: Any SIMM can be installed in any slot.

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) 16K x 8
256KB (B)
(4) 64K x 8
None
(1) 16K x 8
512KB (A)
(4) 128K x 8
None
(1) 32K x 8
512KB (B)
(4) 64K x 8
(4) 64K x 8
(1) 32K x 8
1MB
(4) 128K x 8
(4) 128K x 8
(1) 64K x 8

CACHE JUMPER CONFIGURATION
Size
JP9
JP10
JP11
JP12
JP13
128KB
1 & 2
1 & 2
1 & 2
1 & 2
1 & 2, 3 & 4
256KB (A)
1 & 2
2 & 3
2 & 3
1 & 2
2 & 3, 4 & 5
256KB (B)
1 & 2
2 & 3
1 & 2
2 & 3
1 & 2, 3 & 4
512KB (A)
2 & 3
2 & 3
1 & 2
1 & 2
1 & 2, 3 & 4
512KB (B)
2 & 3
2 & 3
2 & 3
1 & 2
2 & 3, 4 & 5
1MB
2 & 3
2 & 3
2 & 3
1 & 2
2 & 3, 4 & 5
Note: Pins designated should be in the closed position.

CPU SPEED SELECTION
Speed
JP3
JP4
JP5
25MHz
Open
Open
Open
33MHz
Closed
Closed
Open
40MHz
Open
Closed
Open
50iMHz
Open
Open
Open
66iMHz
Closed
Closed
Open
75iMHz
Open
Open
Open
100iMHz
Closed
Closed
Open

CPU TYPE SELECTION
Type
JC1
JC2
JC3
JC4
JC6
UMC U5S
2 & 3
Open
Open
Open
Open
UMC U5SD
2 & 3
Open
Open
Open
Open
SL80486SX (5v)
2 & 3
Open
3 & 4
Open
Open
SL80486SX2 (5v)
2 & 3
Open
3 & 4
Open
Open
SL80486DX (5v)
2 & 3
Open
3 & 4
Open
Open
CX486DX2 (5v)
2 & 3
Open
2 & 3
Open
Open
AM486DX2
2 & 3
Open
Open
Open
Open
AM486DXL2 (3.3v)
2 & 3
Open
Open
Open
Open
SL80486DX2 (5v)
2 & 3
Open
3 & 4
Open
Open
SL80486DX2 (ODP)
2 & 3
Open
3 & 4
Open
Open
CX486DX4 (3.3v)
2 & 3
Open
2 & 3
Open
Open
AM486DX4 (3v)
2 & 3
Open
Open
Open
Open
AM486DX4 (WB 3v)
2 & 3
Open
1 & 2, 3 & 4
Open
4 & 5
SL80486DX4
2 & 3
Open
3 & 4
Open
Open
SL80486DX4 (3v)
2 & 3
Open
3 & 4
Open
Open
P24T
2 & 3
Open
3 & 4
1 & 2
Open
CX5X86 (3v)
2 & 3
Open
1 & 2, 3 & 4
Open
2 & 3
Note: Pins designated should be in the closed position.

CPU TYPE SELECTION (CON’T)
Type
JC8
JC9
JC10
JC11
UMC U5S
3 & 4
Open
1 & 2
Open
UMC U5SD
3 & 4
Open
1 & 2
Open
SL80486SX (5v)
Open
2 & 3
3 & 4
4 & 5
SL80486SX2 (5v)
Open
2 & 3
3 & 4
4 & 5
SL80486DX (5v)
Open
2 & 3
3 & 4
4 & 5
CX486DX2 (5v)
2 & 3
1 & 2
3 & 4
2 & 3
AM486DX2
Open
Open
3 & 4
Open
AM486DXL2 (3.3v)
3 & 4
4 & 5
1 & 2, 3 & 4
Open
SL80486DX2 (5v)
Open
2 & 3
3 & 4
4 & 5
SL80486DX2 (ODP)
Open
2 & 3
3 & 4
4 & 5
CX486DX4 (3.3v)
2 & 3
1 & 2
3 & 4
2 & 3
AM486DX4 (3v)
Open
Open
3 & 4
Open
AM486DX4 (WB 3v)
Open
2 & 3
3 & 4
4 & 5
SL80486DX4
Open
2 & 3
2 & 3
1 & 2
SL80486DX4 (3v)
Open
2 & 3
3 & 4
4 & 5
P24T
Open
2 & 3
2 & 3
1 & 2
CX5X86 (3v)
Open
2 & 3
3 & 4
2 & 3
Note: Pins designated should be in the closed position.

CPU TYPE SELECTION (CON’T)
Type
JC12
JC13
JC14
JC15
UMC U5S
1 & 2
2 & 3
Open
Open
UMC U5SD
1 & 2
3 & 4
Open
Open
SL80486SX (5v)
1 & 2
2 & 3
Open
Open
SL80486SX2 (5v)
1 & 2
2 & 3
Open
Open
SL80486DX (5v)
1 & 2
1 & 2, 3 & 4
Open
Open
CX486DX2 (5v)
1 & 2
1 & 2, 3 & 4
2 & 3
Open
AM486DX2
Open
1 & 2, 3 & 4
Open
Open
AM486DXL2 (3.3v)
1 & 2
1 & 2, 3 & 4
Open
2 & 3
SL80486DX2 (5v)
1 & 2
1 & 2, 3 & 4
Open
Open
SL80486DX2 (ODP)
1 & 2
1 & 2, 3 & 4
Open
Open
CX486DX4 (3.3v)
1 & 2
1 & 2, 3 & 4
2 & 3
Open
AM486DX4 (3v)
Open
1 & 2, 3 & 4
Open
Open
AM486DX4 (WB 3v)
1 & 2
1 & 2, 3 & 4
1 & 2
Open
SL80486DX4
1 & 2
1 & 2, 3 & 4
Open
Open
SL80486DX4 (3v)
1 & 2
1 & 2, 3 & 4
Open
Open
P24T
1 & 2
1 & 2, 3 & 4
Open
Open
CX5X86 (3v)
1 & 2
1 & 2, 3 & 4
1 & 2
Open
Note: Pins designated should be in the closed position.

CPU VOLTAGE SELECTION
Voltage
Q5
3.3v
Open
5v
Pins 1 & 2, 3 & 4, 5 & 6 closed

DMA CHANNEL SELECTION
Channel
JP26
JP27

1
Pins 1 & 2 closed
Pins 1 & 2 closed
»
3
Pins 2 & 3 closed
Pins 2 & 3 closed

PARALLEL PORT ADDRESS SELECTION
Setting
JP24
JP25
JP29
JP31
»
EPP mode
Pins 2 & 3 closed
Pins 1 & 2 closed
Pins 1 & 2 closed
Open

LPT1 (378h)
Pins 2 & 3 closed
Pins 2 & 3 closed
Pins 1 & 2 closed
Any setting

ECP/EPP
Pins 1 & 2 closed
Pins 2 & 3 closed
Pins 1 & 2 closed
Open

EXT, 2 FDD
Pins 1 & 2 closed
Pins 1 & 2 closed
Pins 1 & 2 closed
Open

SERIAL PORT 1 ADDRESS SELECTION
Setting
JP20
COM1 (3F8h)
Pins 1 & 2 closed
Disabled
Pins 2 & 3 closed

SERIAL PORT 2 ADDRESS SELECTION
Setting
JP22
COM2 (2F8h)
Pins 1 & 2 closed
Disabled
Pins 2 & 3 closed

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Processor	UMCU5S/UMCU5SD/SL80486SX/SL80486SX2/SL80486DX2/ CX486DX2/AM486DX2/AM486DXL2/SL80486DX2/SL80486DX2(ODP)/CX486DX4/AM486DX4/AM486DX4(WB)/SL80486DX4/P24T/CX5X86
Processor Speed	25/33/40/50(internal)/66(internal)/75(internal)/100(internal)MHz
Chip Set	SIS
Video Chip Set	None
Maximum Onboard Memory	128MB
Maximum Video Memory	None
Cache	128/256/512/1024KB
BIOS	Award
Dimensions	279mm x 220mm
I/O Options	32-bit PCI slots (3), floppy drive interface, game interface, green PC connector, IDE interfaces (2), parallel port, serial ports (2)
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
Parallel port	CN1	Reset switch	J3
Game interface	CN2	Green PC connector	J4
Floppy drive interface	CN3	Turbo LED	J5
Serial port 2	CN4	Green PC LED	J6
Serial port 1	CN5	Turbo switch	J7
IDE interface	CN6	Power LED & keylock	J8
IDE interface	CN7	Green PC connector (I/O)	JP8
External battery	J1	32-bit PCI slots	PC1 - PC3
Speaker	J2

USER CONFIGURABLE SETTINGS
Function		Label	Position
»	Factory configured - do not alter	JC5	Open
	CPU type select SL AM486DX4-120 WB (3v)	JC7	Open
	CPU type select SL AM5X86-133 WB (3.45v)	JC7	Closed
»	Factory configured - do not alter	JP1	Unidentified
»	Green PC select STP.CLK	JP6	Pins 1 & 2 closed
	Green PC select SMI OUT	JP6	Pins 2 & 3 closed
»	Flash BIOS normal operation	JP16	Pins 2 & 3, 4 & 5 closed
	Flash BIOS update at boot	JP16	Pins 1 & 2, 5 & 6 closed
»	CMOS memory normal operation	JP17	Open
	CMOS memory clear	JP17	Closed
»	Battery type select internal	JP18	Closed
	Battery type select external	JP18	Open
»	Factory configured - do not alter	JP19	Unidentified
»	Parallel port IRQ select IRQ7	JP30	Pins 1 & 2 closed
	Parallel port IRQ select IRQ5	JP30	Pins 2 & 3 closed
»	Floppy drive interface enabled	JP32	Pins 1 & 2 closed
	Floppy drive interface disabled	JP32	Pins 2 & 3 closed
»	Game port enabled	JP35	Closed
	Game port disabled	JP35	Open

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) 256K x 36	(1) 256K x 36	(1) 256K x 36	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

DRAM CONFIGURATION (CON’T)
Size	Bank 0	Bank 1	Bank 2	Bank 3
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
7MB	(1) 1M x 36	(1) 256K x 36	(1) 256K x 36	(1) 256K x 36
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
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) 512K 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
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) 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
20MB	(1) 4M x 36	(1) 1M x 36	None	None
28MB	(1) 4M x 36	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36
32MB	(1) 8M x 36	None	None	None
32MB	(1) 4M x 36	(1) 4M x 36	None	None
33MB	(1) 256K x 36	(1) 8M 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
36MB	(1) 8M x 36	(1) 512K x 36	(1) 512K x 36	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
64MB	(1) 8M x 36	(1) 8M x 36	None	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) 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
Note: Any SIMM can be installed in any slot.

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) 16K x 8
256KB (B)	(4) 64K x 8	None	(1) 16K x 8
512KB (A)	(4) 128K x 8	None	(1) 32K x 8
512KB (B)	(4) 64K x 8	(4) 64K x 8	(1) 32K x 8
1MB	(4) 128K x 8	(4) 128K x 8	(1) 64K x 8

CACHE JUMPER CONFIGURATION
Size	JP9	JP10	JP11	JP12	JP13
128KB	1 & 2	1 & 2	1 & 2	1 & 2	1 & 2, 3 & 4
256KB (A)	1 & 2	2 & 3	2 & 3	1 & 2	2 & 3, 4 & 5
256KB (B)	1 & 2	2 & 3	1 & 2	2 & 3	1 & 2, 3 & 4
512KB (A)	2 & 3	2 & 3	1 & 2	1 & 2	1 & 2, 3 & 4
512KB (B)	2 & 3	2 & 3	2 & 3	1 & 2	2 & 3, 4 & 5
1MB	2 & 3	2 & 3	2 & 3	1 & 2	2 & 3, 4 & 5
Note: Pins designated should be in the closed position.

CPU SPEED SELECTION
Speed	JP3	JP4	JP5
25MHz	Open	Open	Open
33MHz	Closed	Closed	Open
40MHz	Open	Closed	Open
50iMHz	Open	Open	Open
66iMHz	Closed	Closed	Open
75iMHz	Open	Open	Open
100iMHz	Closed	Closed	Open

CPU TYPE SELECTION
Type	JC1	JC2	JC3	JC4	JC6
UMC U5S	2 & 3	Open	Open	Open	Open
UMC U5SD	2 & 3	Open	Open	Open	Open
SL80486SX (5v)	2 & 3	Open	3 & 4	Open	Open
SL80486SX2 (5v)	2 & 3	Open	3 & 4	Open	Open
SL80486DX (5v)	2 & 3	Open	3 & 4	Open	Open
CX486DX2 (5v)	2 & 3	Open	2 & 3	Open	Open
AM486DX2	2 & 3	Open	Open	Open	Open
AM486DXL2 (3.3v)	2 & 3	Open	Open	Open	Open
SL80486DX2 (5v)	2 & 3	Open	3 & 4	Open	Open
SL80486DX2 (ODP)	2 & 3	Open	3 & 4	Open	Open
CX486DX4 (3.3v)	2 & 3	Open	2 & 3	Open	Open
AM486DX4 (3v)	2 & 3	Open	Open	Open	Open
AM486DX4 (WB 3v)	2 & 3	Open	1 & 2, 3 & 4	Open	4 & 5
SL80486DX4	2 & 3	Open	3 & 4	Open	Open
SL80486DX4 (3v)	2 & 3	Open	3 & 4	Open	Open
P24T	2 & 3	Open	3 & 4	1 & 2	Open
CX5X86 (3v)	2 & 3	Open	1 & 2, 3 & 4	Open	2 & 3
Note: Pins designated should be in the closed position.

CPU TYPE SELECTION (CON’T)
Type	JC8	JC9	JC10	JC11
UMC U5S	3 & 4	Open	1 & 2	Open
UMC U5SD	3 & 4	Open	1 & 2	Open
SL80486SX (5v)	Open	2 & 3	3 & 4	4 & 5
SL80486SX2 (5v)	Open	2 & 3	3 & 4	4 & 5
SL80486DX (5v)	Open	2 & 3	3 & 4	4 & 5
CX486DX2 (5v)	2 & 3	1 & 2	3 & 4	2 & 3
AM486DX2	Open	Open	3 & 4	Open
AM486DXL2 (3.3v)	3 & 4	4 & 5	1 & 2, 3 & 4	Open
SL80486DX2 (5v)	Open	2 & 3	3 & 4	4 & 5
SL80486DX2 (ODP)	Open	2 & 3	3 & 4	4 & 5
CX486DX4 (3.3v)	2 & 3	1 & 2	3 & 4	2 & 3
AM486DX4 (3v)	Open	Open	3 & 4	Open
AM486DX4 (WB 3v)	Open	2 & 3	3 & 4	4 & 5
SL80486DX4	Open	2 & 3	2 & 3	1 & 2
SL80486DX4 (3v)	Open	2 & 3	3 & 4	4 & 5
P24T	Open	2 & 3	2 & 3	1 & 2
CX5X86 (3v)	Open	2 & 3	3 & 4	2 & 3
Note: Pins designated should be in the closed position.

CPU TYPE SELECTION (CON’T)
Type	JC12	JC13	JC14	JC15
UMC U5S	1 & 2	2 & 3	Open	Open
UMC U5SD	1 & 2	3 & 4	Open	Open
SL80486SX (5v)	1 & 2	2 & 3	Open	Open
SL80486SX2 (5v)	1 & 2	2 & 3	Open	Open
SL80486DX (5v)	1 & 2	1 & 2, 3 & 4	Open	Open
CX486DX2 (5v)	1 & 2	1 & 2, 3 & 4	2 & 3	Open
AM486DX2	Open	1 & 2, 3 & 4	Open	Open
AM486DXL2 (3.3v)	1 & 2	1 & 2, 3 & 4	Open	2 & 3
SL80486DX2 (5v)	1 & 2	1 & 2, 3 & 4	Open	Open
SL80486DX2 (ODP)	1 & 2	1 & 2, 3 & 4	Open	Open
CX486DX4 (3.3v)	1 & 2	1 & 2, 3 & 4	2 & 3	Open
AM486DX4 (3v)	Open	1 & 2, 3 & 4	Open	Open
AM486DX4 (WB 3v)	1 & 2	1 & 2, 3 & 4	1 & 2	Open
SL80486DX4	1 & 2	1 & 2, 3 & 4	Open	Open
SL80486DX4 (3v)	1 & 2	1 & 2, 3 & 4	Open	Open
P24T	1 & 2	1 & 2, 3 & 4	Open	Open
CX5X86 (3v)	1 & 2	1 & 2, 3 & 4	1 & 2	Open
Note: Pins designated should be in the closed position.

CPU VOLTAGE SELECTION
Voltage	Q5
3.3v	Open
5v	Pins 1 & 2, 3 & 4, 5 & 6 closed

DMA CHANNEL SELECTION
Channel		JP26	JP27
	1	Pins 1 & 2 closed	Pins 1 & 2 closed
»	3	Pins 2 & 3 closed	Pins 2 & 3 closed

PARALLEL PORT ADDRESS SELECTION
Setting		JP24	JP25	JP29	JP31
»	EPP mode	Pins 2 & 3 closed	Pins 1 & 2 closed	Pins 1 & 2 closed	Open
	LPT1 (378h)	Pins 2 & 3 closed	Pins 2 & 3 closed	Pins 1 & 2 closed	Any setting
	ECP/EPP	Pins 1 & 2 closed	Pins 2 & 3 closed	Pins 1 & 2 closed	Open
	EXT, 2 FDD	Pins 1 & 2 closed	Pins 1 & 2 closed	Pins 1 & 2 closed	Open

SERIAL PORT 1 ADDRESS SELECTION
Setting	JP20
COM1 (3F8h)	Pins 1 & 2 closed
Disabled	Pins 2 & 3 closed

SERIAL PORT 2 ADDRESS SELECTION
Setting	JP22
COM2 (2F8h)	Pins 1 & 2 closed
Disabled	Pins 2 & 3 closed