SY-045A2/A5 Motherboard Settings and Configuration

SOYO TECHNOLOGY CO., LTD.

SY-045A2/A5

Processor
80486SX/80486SX2/CX486DX/U5S/80486DX/CX486DX2/AM486DX2/ 80486DX2/AM486DX4/80486DX4/P24D/Pentium Overdrive
Processor Speed
25/33/40/50(internal)/66(internal)/75(internal)/80(internal)/100(internal)MHz
Chip Set
Unidentified
Max. Onboard DRAM
256MB
Cache
256/512/1024KB
BIOS
Award
Dimensions
330mm x 218mm
I/O Options
32-bit VESA local bus slot, 32-bit PCI slots (4), IDE interfaces (2), parallel port, serial ports (2)
NPU Options
None

CONNECTIONS
Purpose
Location
Purpose
Location
Serial port 1
CN1
Reset switch
J19
Serial port 2
CN2
External battery
J20
Parallel port
CN3
Turbo switch
J21
Floppy drive interface
CN4
Turbo LED
J22
IDE interface (primary)
CN5
IDE interface LED (secondary)
JP17
IDE interface (secondary)
CN6
IDE interface LED (primary)
JP18
Power LED & keylock
J17
32-bit PCI slots
PCI1 - PCI4
Speaker
J18
32-bit VESA local bus slot
SL1
Note: The locations of J19, J21, and J22 are unidentified.

USER CONFIGURABLE SETTINGS
Function
Jumper
Position
»
Factory configured - do not alter
J7
Open
»
Factory configured - do not alter
JP1
N/A
»
Factory configured - do not alter
JP2
N/A
»
Monitor type select color
JP3
Closed

Monitor type select monochrome
JP3
Open
»
Factory configured - do not alter
JP4
N/A
»
CMOS memory normal operation
JP5
pins 1 & 2 closed

CMOS memory clear
JP5
pins 2 & 3 closed
»
Factory configured - do not alter
JP6
Closed
»
Factory configured - do not alter
JP7
Open
»
Factory configured - do not alter
JP12
pins 1 & 2 closed
»
Factory configured - do not alter
JP13
N/A
»
CPU signal type select SMOUT
JP15
pins 1 & 2 closed

CPU signal type select STPCLK
JP15
pins 2 & 3 closed
»
Factory configured - do not alter
JP19
N/A
»
Factory configured - do not alter
JP27
pins 2 & 3 closed
»
Factory configured - do not alter
JP28
pins 2 & 3 closed
Note: The locations of JP1, JP2, JP3, JP4, JP13, JP19, and JP29 are unidentified.

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
3MB
(1) 256K x 36
(1) 256K x 36
(1) 256K x 36
NONE
4MB
(1) 256K x 36
(1) 256K x 36
(1) 256K x 36
(1) 256K x 36
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) 512K x 36
(1) 512K x 36
(1) 512K x 36
NONE
8MB
(1) 512K x 36
(1) 512K x 36
(1) 512K x 36
(1) 512K x 36
8MB
(1) 1M x 36
(1) 1M x 36
NONE
NONE
8MB
(1) 2M x 36
NONE
NONE
NONE
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
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
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

DRAM CONFIGURATION (CON’T)
Size
Bank 0
Bank 1
Bank 2
Bank 3
32MB
(1) 2M x 36
(1) 2M x 36
(1) 2M x 36
(1) 2M x 36
32MB
(1) 4M x 36
(1) 4M x 36
NONE
NONE
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) 16M x 36
NONE
NONE
NONE
64MB
(1) 4M x 36
(1) 4M x 36
(1) 8M x 36
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
70MB
(1) 16M x 36
(1) 512K x 36
(1) 512K x 36
(1) 512K x 36
72MB
(1) 1M x 36
(1) 1M x 36
(1) 16M x 36
NONE
72MB
(1) 1M x 36
(1) 1M x 36
(1) 8M x 36
(1) 8M x 36
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
88MB
(1) 16M x 36
(1) 2M x 36
(1) 2M x 36
(1) 2M x 36
96MB
(1) 4M x 36
(1) 4M x 36
(1) 16M 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
112MB
(1) 16M x 36
(1) 4M x 36
(1) 4M x 36
(1) 4M 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
132MB
(1) 16M x 36
(1) 16M x 36
(1) 512K x 36
(1) 512K x 36
144MB
(1) 16M x 36
(1) 16M x 36
(1) 2M x 36
(1) 2M x 36
160MB
(1) 16M x 36
(1) 16M x 36
(1) 4M x 36
(1) 4M x 36
160MB
(1) 16M x 36
(1) 8M x 36
(1) 8M x 36
(1) 8M x 36
192MB
(1) 16M x 36
(1) 16M x 36
(1) 16M x 36
NONE
192MB
(1) 16M x 36
(1) 16M x 36
(1) 8M x 36
(1) 8M x 36
194MB
(1) 16M x 36
(1) 16M x 36
(1) 16M x 36
(1) 512K x 36
200MB
(1) 16M x 36
(1) 16M x 36
(1) 16M x 36
(1) 2M x 36
208MB
(1) 16M x 36
(1) 16M x 36
(1) 16M x 36
(1) 4M x 36
224MB
(1) 16M x 36
(1) 16M x 36
(1) 16M x 36
(1) 8M x 36
256MB
(1) 16M x 36
(1) 16M x 36
(1) 16M x 36
(1) 16M x 36

CACHE CONFIGURATION
Size
Bank 0
Bank 1
TAG
256KB
(4) 32K x 8
(4) 32K x 8
(1) 32K x 8
256KB
(4) 64K x 8
NONE
(1) 32K x 8
512KB
(4) 64K x 8
(4) 32K x 8
(1) 32K 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
JP25
JP26
JP29
256KB
pins 1 & 2 closed
pins 1 & 2 closed
pins 1 & 2 closed
256KB
pins 2 & 3 closed
pins 1 & 2 closed
pins 1 & 2 closed
512KB
pins 1 & 2 closed
pins 1 & 2 closed
pins 2 & 3 closed
512KB
pins 2 & 3 closed
pins 1 & 2 closed
pins 2 & 3 closed
1MB
pins 1 & 2 closed
pins 2 & 3 closed
pins 2 & 3 closed

CPU TYPE CONFIGURATION
Type
JP30
JP31
JP32
JP33
JP34
JP36
80486SX
3 & 4
Open
2 & 3
Open
Open
Open
80486SX2
3 & 4
Open
2 & 3
Open
Open
Open
CX486DX (5v)
2 & 3
3 & 4
1 & 2, 3 & 4
2 & 3
Open
Open
U5S
Open
1 & 2, 3 & 4
1 & 2, 3 & 4
3 & 4
Open
Open
80486DX
3 & 4
3 & 4
1 & 2, 3 & 4
Open
Open
Open
CX486DX2 (3.6v)
2 & 3
3 & 4
1 & 2, 3 & 4
2 & 3
Open
Open
CX486DX2 (4v)
2 & 3
3 & 4
1 & 2, 3 & 4
2 & 3
Open
Open
CX486DX2 (5v)
2 & 3
3 & 4
1 & 2, 3 & 4
2 & 3
Open
Open
AM486DX2 (3.45v)
3 & 4
3 & 4
1 & 2, 3 & 4
Open
2 & 3
Open
AM486DX2 (5v)
3 & 4
3 & 4
1 & 2, 3 & 4
Open
2 & 3
Open
AM486DX2
3 & 4
3 & 4
1 & 2, 3 & 4
Open
2 & 3
1 & 2
80486DX2
3 & 4
3 & 4
1 & 2, 3 & 4
Open
Open
Open
AM486DX4 (3.45v)
3 & 4
3 & 4
1 & 2, 3 & 4
Open
1 & 2
Open
AM486DX4
3 & 4
3 & 4
1 & 2, 3 & 4
Open
1 & 2
1 & 2
80486DX4
3 & 4
3 & 4
1 & 2, 3 & 4
Open
Open
Open
P24D
1 & 2, 3 & 4
3 & 4
1 & 2, 3 & 4
Open
1 & 2
Open
Pentium Overdrive
3 & 4
2 & 3
1 & 2, 3 & 4
1 & 2
Open
1 & 2
Note: Pins designated should be in closed position.

CPU TYPE CONFIGURATION (CON’T)
Type
JP37
JP38
JP39
JP40
JP41
80486SX
4 & 5
Open
Open
1 & 2, 3 & 4
Open
80486SX2
4 & 5
Open
Open
1 & 2, 3 & 4
Open
CX486DX (5v)
2 & 3
2 & 3
Open
1 & 2, 3 & 4
Open
U5S
Open
Open
Open
1 & 2, 3 & 4
Open
80486DX
4 & 5
Open
Open
1 & 2, 3 & 4
Open
CX486DX2 (3.6v)
2 & 3
2 & 3
3 & 4
3 & 4, 5 & 6
Open
CX486DX2 (4v)
2 & 3
2 & 3
5 & 6
3 & 4, 5 & 6
Open
CX486DX2 (5v)
2 & 3
2 & 3
Open
1 & 2, 3 & 4
Open
AM486DX2 (3.45v)
4 & 5
Open
1 & 2
1 & 2, 3 & 4
Open
AM486DX2 (5v)
4 & 5
Open
1 & 2
1 & 2, 3 & 4
Open
AM486DX2
4 & 5
Open
1 & 2
3 & 4, 5 & 6
2 & 3
80486DX2
4 & 5
Open
Open
1 & 2, 3 & 4
Open
AM486DX4 (3.45v)
4 & 5
Open
1 & 2
1 & 2, 3 & 4
Open
AM486DX4
4 & 5
Open
1 & 2
3 & 4, 5 & 6
2 & 3
80486DX4
4 & 5
Open
1 & 2
3 & 4, 5 & 6
Open
P24D
4 & 5
1 & 2
Open
1 & 2, 3 & 4
1 & 2
Pentium Overdrive
1 & 2
1 & 2
Open
1 & 2, 3 & 4
Open
Note: Pins designated should be in closed position.

CPU TYPE CONFIGURATION (CON’T)
Type
JP42
JP43
JP44
JP45
JP46
80486SX
2 & 3
Open
1 & 2
1 & 2
1 & 2
80486SX2
2 & 3
Open
1 & 2
1 & 2
1 & 2
CX486DX (5v)
2 & 3
Open
Open
1 & 2
1 & 2
U5S
2 & 3
Open
1 & 2
2 & 3
4 & 5
80486DX
2 & 3
Open
1 & 2
1 & 2
2 & 3
CX486DX2 (3.6v)
2 & 3
Open
Open
1 & 2
1 & 2
CX486DX2 (4v)
2 & 3
Open
Open
1 & 2
1 & 2
CX486DX2 (5v)
2 & 3
Open
Open
1 & 2
1 & 2
AM486DX2 (3.45v)
2 & 3
Open
1 & 2
1 & 2
2 & 3
AM486DX2 (5v)
2 & 3
Open
1 & 2
1 & 2
2 & 3
AM486DX2
2 & 3
Open
4 & 5
1 & 2
2 & 3
80486DX2
2 & 3
Open
1 & 2
1 & 2
2 & 3
AM486DX4 (3.45v)
2 & 3
Open
1 & 2
1 & 2
2 & 3
AM486DX4
2 & 3
Open
4 & 5
1 & 2
2 & 3
80486DX4
2 & 3
Open
1 & 2
1 & 2
2 & 3
P24D
1 & 2
Open
2 & 3
1 & 2
2 & 3
Pentium Overdrive
1 & 2
Open
Open
1 & 2
2 & 3
Note: Pins designated should be in closed position.

CPU SPEED CONFIGURATION
Speed
JP14
JP21
JP22
25MHz
pins 1 & 2 closed
Open
Open
33MHz
pins 1 & 2 closed
Closed
Closed
40MHz
pins 1 & 2 closed
Closed
Open
50iMHz
pins 1 & 2 closed
Open
Open
66iMHz
pins 1 & 2 closed
Closed
Closed
75iMHz
pins 1 & 2 closed
Open
Open
80iMHz
pins 1 & 2 closed
Closed
Open
100iMHz
pins 1 & 2 closed
Closed
Closed

DRQ/DACK CONFIGURATION
DRQ/DACK
JP8
JP9
JP10
JP11
None
Open
Open
Open
Open
DRQ3/DACK3
Closed
Open
Open
Closed
DRQ7/DACK7
Open
Closed
Closed
Open

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Processor	80486SX/80486SX2/CX486DX/U5S/80486DX/CX486DX2/AM486DX2/ 80486DX2/AM486DX4/80486DX4/P24D/Pentium Overdrive
Processor Speed	25/33/40/50(internal)/66(internal)/75(internal)/80(internal)/100(internal)MHz
Chip Set	Unidentified
Max. Onboard DRAM	256MB
Cache	256/512/1024KB
BIOS	Award
Dimensions	330mm x 218mm
I/O Options	32-bit VESA local bus slot, 32-bit PCI slots (4), IDE interfaces (2), parallel port, serial ports (2)
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
Serial port 1	CN1	Reset switch	J19
Serial port 2	CN2	External battery	J20
Parallel port	CN3	Turbo switch	J21
Floppy drive interface	CN4	Turbo LED	J22
IDE interface (primary)	CN5	IDE interface LED (secondary)	JP17
IDE interface (secondary)	CN6	IDE interface LED (primary)	JP18
Power LED & keylock	J17	32-bit PCI slots	PCI1 - PCI4
Speaker	J18	32-bit VESA local bus slot	SL1
Note: The locations of J19, J21, and J22 are unidentified.

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	Factory configured - do not alter	J7	Open
»	Factory configured - do not alter	JP1	N/A
»	Factory configured - do not alter	JP2	N/A
»	Monitor type select color	JP3	Closed
	Monitor type select monochrome	JP3	Open
»	Factory configured - do not alter	JP4	N/A
»	CMOS memory normal operation	JP5	pins 1 & 2 closed
	CMOS memory clear	JP5	pins 2 & 3 closed
»	Factory configured - do not alter	JP6	Closed
»	Factory configured - do not alter	JP7	Open
»	Factory configured - do not alter	JP12	pins 1 & 2 closed
»	Factory configured - do not alter	JP13	N/A
»	CPU signal type select SMOUT	JP15	pins 1 & 2 closed
	CPU signal type select STPCLK	JP15	pins 2 & 3 closed
»	Factory configured - do not alter	JP19	N/A
»	Factory configured - do not alter	JP27	pins 2 & 3 closed
»	Factory configured - do not alter	JP28	pins 2 & 3 closed
Note: The locations of JP1, JP2, JP3, JP4, JP13, JP19, and JP29 are unidentified.

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
3MB	(1) 256K x 36	(1) 256K x 36	(1) 256K x 36	NONE
4MB	(1) 256K x 36	(1) 256K x 36	(1) 256K x 36	(1) 256K x 36
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) 512K x 36	(1) 512K x 36	(1) 512K x 36	NONE
8MB	(1) 512K x 36	(1) 512K x 36	(1) 512K x 36	(1) 512K x 36
8MB	(1) 1M x 36	(1) 1M x 36	NONE	NONE
8MB	(1) 2M x 36	NONE	NONE	NONE
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
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
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

DRAM CONFIGURATION (CON’T)
Size	Bank 0	Bank 1	Bank 2	Bank 3
32MB	(1) 2M x 36	(1) 2M x 36	(1) 2M x 36	(1) 2M x 36
32MB	(1) 4M x 36	(1) 4M x 36	NONE	NONE
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) 16M x 36	NONE	NONE	NONE
64MB	(1) 4M x 36	(1) 4M x 36	(1) 8M x 36	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
70MB	(1) 16M x 36	(1) 512K x 36	(1) 512K x 36	(1) 512K x 36
72MB	(1) 1M x 36	(1) 1M x 36	(1) 16M x 36	NONE
72MB	(1) 1M x 36	(1) 1M x 36	(1) 8M x 36	(1) 8M x 36
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
88MB	(1) 16M x 36	(1) 2M x 36	(1) 2M x 36	(1) 2M x 36
96MB	(1) 4M x 36	(1) 4M x 36	(1) 16M 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
112MB	(1) 16M x 36	(1) 4M x 36	(1) 4M x 36	(1) 4M 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
132MB	(1) 16M x 36	(1) 16M x 36	(1) 512K x 36	(1) 512K x 36
144MB	(1) 16M x 36	(1) 16M x 36	(1) 2M x 36	(1) 2M x 36
160MB	(1) 16M x 36	(1) 16M x 36	(1) 4M x 36	(1) 4M x 36
160MB	(1) 16M x 36	(1) 8M x 36	(1) 8M x 36	(1) 8M x 36
192MB	(1) 16M x 36	(1) 16M x 36	(1) 16M x 36	NONE
192MB	(1) 16M x 36	(1) 16M x 36	(1) 8M x 36	(1) 8M x 36
194MB	(1) 16M x 36	(1) 16M x 36	(1) 16M x 36	(1) 512K x 36
200MB	(1) 16M x 36	(1) 16M x 36	(1) 16M x 36	(1) 2M x 36
208MB	(1) 16M x 36	(1) 16M x 36	(1) 16M x 36	(1) 4M x 36
224MB	(1) 16M x 36	(1) 16M x 36	(1) 16M x 36	(1) 8M x 36
256MB	(1) 16M x 36	(1) 16M x 36	(1) 16M x 36	(1) 16M x 36

CACHE CONFIGURATION
Size	Bank 0	Bank 1	TAG
256KB	(4) 32K x 8	(4) 32K x 8	(1) 32K x 8
256KB	(4) 64K x 8	NONE	(1) 32K x 8
512KB	(4) 64K x 8	(4) 32K x 8	(1) 32K 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	JP25	JP26	JP29
256KB	pins 1 & 2 closed	pins 1 & 2 closed	pins 1 & 2 closed
256KB	pins 2 & 3 closed	pins 1 & 2 closed	pins 1 & 2 closed
512KB	pins 1 & 2 closed	pins 1 & 2 closed	pins 2 & 3 closed
512KB	pins 2 & 3 closed	pins 1 & 2 closed	pins 2 & 3 closed
1MB	pins 1 & 2 closed	pins 2 & 3 closed	pins 2 & 3 closed

CPU TYPE CONFIGURATION
Type	JP30	JP31	JP32	JP33	JP34	JP36
80486SX	3 & 4	Open	2 & 3	Open	Open	Open
80486SX2	3 & 4	Open	2 & 3	Open	Open	Open
CX486DX (5v)	2 & 3	3 & 4	1 & 2, 3 & 4	2 & 3	Open	Open
U5S	Open	1 & 2, 3 & 4	1 & 2, 3 & 4	3 & 4	Open	Open
80486DX	3 & 4	3 & 4	1 & 2, 3 & 4	Open	Open	Open
CX486DX2 (3.6v)	2 & 3	3 & 4	1 & 2, 3 & 4	2 & 3	Open	Open
CX486DX2 (4v)	2 & 3	3 & 4	1 & 2, 3 & 4	2 & 3	Open	Open
CX486DX2 (5v)	2 & 3	3 & 4	1 & 2, 3 & 4	2 & 3	Open	Open
AM486DX2 (3.45v)	3 & 4	3 & 4	1 & 2, 3 & 4	Open	2 & 3	Open
AM486DX2 (5v)	3 & 4	3 & 4	1 & 2, 3 & 4	Open	2 & 3	Open
AM486DX2	3 & 4	3 & 4	1 & 2, 3 & 4	Open	2 & 3	1 & 2
80486DX2	3 & 4	3 & 4	1 & 2, 3 & 4	Open	Open	Open
AM486DX4 (3.45v)	3 & 4	3 & 4	1 & 2, 3 & 4	Open	1 & 2	Open
AM486DX4	3 & 4	3 & 4	1 & 2, 3 & 4	Open	1 & 2	1 & 2
80486DX4	3 & 4	3 & 4	1 & 2, 3 & 4	Open	Open	Open
P24D	1 & 2, 3 & 4	3 & 4	1 & 2, 3 & 4	Open	1 & 2	Open
Pentium Overdrive	3 & 4	2 & 3	1 & 2, 3 & 4	1 & 2	Open	1 & 2
Note: Pins designated should be in closed position.

CPU TYPE CONFIGURATION (CON’T)
Type	JP37	JP38	JP39	JP40	JP41
80486SX	4 & 5	Open	Open	1 & 2, 3 & 4	Open
80486SX2	4 & 5	Open	Open	1 & 2, 3 & 4	Open
CX486DX (5v)	2 & 3	2 & 3	Open	1 & 2, 3 & 4	Open
U5S	Open	Open	Open	1 & 2, 3 & 4	Open
80486DX	4 & 5	Open	Open	1 & 2, 3 & 4	Open
CX486DX2 (3.6v)	2 & 3	2 & 3	3 & 4	3 & 4, 5 & 6	Open
CX486DX2 (4v)	2 & 3	2 & 3	5 & 6	3 & 4, 5 & 6	Open
CX486DX2 (5v)	2 & 3	2 & 3	Open	1 & 2, 3 & 4	Open
AM486DX2 (3.45v)	4 & 5	Open	1 & 2	1 & 2, 3 & 4	Open
AM486DX2 (5v)	4 & 5	Open	1 & 2	1 & 2, 3 & 4	Open
AM486DX2	4 & 5	Open	1 & 2	3 & 4, 5 & 6	2 & 3
80486DX2	4 & 5	Open	Open	1 & 2, 3 & 4	Open
AM486DX4 (3.45v)	4 & 5	Open	1 & 2	1 & 2, 3 & 4	Open
AM486DX4	4 & 5	Open	1 & 2	3 & 4, 5 & 6	2 & 3
80486DX4	4 & 5	Open	1 & 2	3 & 4, 5 & 6	Open
P24D	4 & 5	1 & 2	Open	1 & 2, 3 & 4	1 & 2
Pentium Overdrive	1 & 2	1 & 2	Open	1 & 2, 3 & 4	Open
Note: Pins designated should be in closed position.

CPU TYPE CONFIGURATION (CON’T)
Type	JP42	JP43	JP44	JP45	JP46
80486SX	2 & 3	Open	1 & 2	1 & 2	1 & 2
80486SX2	2 & 3	Open	1 & 2	1 & 2	1 & 2
CX486DX (5v)	2 & 3	Open	Open	1 & 2	1 & 2
U5S	2 & 3	Open	1 & 2	2 & 3	4 & 5
80486DX	2 & 3	Open	1 & 2	1 & 2	2 & 3
CX486DX2 (3.6v)	2 & 3	Open	Open	1 & 2	1 & 2
CX486DX2 (4v)	2 & 3	Open	Open	1 & 2	1 & 2
CX486DX2 (5v)	2 & 3	Open	Open	1 & 2	1 & 2
AM486DX2 (3.45v)	2 & 3	Open	1 & 2	1 & 2	2 & 3
AM486DX2 (5v)	2 & 3	Open	1 & 2	1 & 2	2 & 3
AM486DX2	2 & 3	Open	4 & 5	1 & 2	2 & 3
80486DX2	2 & 3	Open	1 & 2	1 & 2	2 & 3
AM486DX4 (3.45v)	2 & 3	Open	1 & 2	1 & 2	2 & 3
AM486DX4	2 & 3	Open	4 & 5	1 & 2	2 & 3
80486DX4	2 & 3	Open	1 & 2	1 & 2	2 & 3
P24D	1 & 2	Open	2 & 3	1 & 2	2 & 3
Pentium Overdrive	1 & 2	Open	Open	1 & 2	2 & 3
Note: Pins designated should be in closed position.

CPU SPEED CONFIGURATION
Speed	JP14	JP21	JP22
25MHz	pins 1 & 2 closed	Open	Open
33MHz	pins 1 & 2 closed	Closed	Closed
40MHz	pins 1 & 2 closed	Closed	Open
50iMHz	pins 1 & 2 closed	Open	Open
66iMHz	pins 1 & 2 closed	Closed	Closed
75iMHz	pins 1 & 2 closed	Open	Open
80iMHz	pins 1 & 2 closed	Closed	Open
100iMHz	pins 1 & 2 closed	Closed	Closed

DRQ/DACK CONFIGURATION
DRQ/DACK	JP8	JP9	JP10	JP11
None	Open	Open	Open	Open
DRQ3/DACK3	Closed	Open	Open	Closed
DRQ7/DACK7	Open	Closed	Closed	Open