4SPM.3/4SPM5.1

CHAINTECH COMPUTER COMPANY, LTD.

4SPM.3/4SPM5.1

Processor

80486SX/ODP486SX/CX486DX/AM486DX/80486DX/UMCU5S/CX486DX2/ CX486DX2V/AM486DX2/(SL)AM486DX2/80486DX2/P24D/AM486DX4/ 80486DX4/Pentium Overdrive

Processor Speed

25/33/40/50(internal)/50/66(internal)/75(internal)/80(internal)/83(internal)/ 100(internal)MHz

Chip Set

UMC

Max. Onboard DRAM

128MB

Cache

128/256/512/1024KB

BIOS

Award

Dimensions

250mm x 220mm

I/O Options

32-bit PCI slots (3), floppy drive interface, game port, green PC connector, IDE interfaces (2), parallel port, serial ports (2)

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Floppy drive interface

CN1

IDE interface LED 2

JP15

Serial port 1

CN2

Green PC LED

JP27

Serial port 2

CN3

Green PC connector

JP29

Parallel port

CN4

Turbo switch

JP35

Game port

CN5

Turbo LED

JP36

IDE interface 2

CN6

Speaker

JP37

IDE interface 1

CN7

Reset switch

JP44

External battery

JP12

Power LED & keylock

JP45

IDE interface LED 1

JP14

32-bit PCI slots

PC1 - PC3

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

»

CMOS memory normal operation

JP13

pins 1 & 2 closed

CMOS memory clear

JP13

pins 2 & 3 closed

»

PCI bus clock select CPU clock speed

JP21

pins 1 & 2 closed

PCI bus clock select 1/2 CPU clock speed

JP21

pins 2 & 3 closed

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) 512K x 36

(1) 256K x 36

NONE

NONE

3MB

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

NONE

4MB

(1) 512K 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) 1M x 36

NONE

NONE

NONE

4MB

(1) 512K x 36

(1) 512K x 36

NONE

NONE

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) 512K x 36

(1) 1M x 36

NONE

NONE

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) 1M x 36

(1) 1M x 36

NONE

NONE

8MB

(1) 2M x 36

NONE

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) 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) 1M x 36

(1) 2M x 36

NONE

NONE

12MB

(1) 2M x 36

(1) 1M x 36

NONE

NONE

DRAM CONFIGURATION (CON’T)

Size

Bank 0

Bank 1

Bank 2

Bank 3

12MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

NONE

14MB

(1) 512K x 36

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

16MB

(1) 2M 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) 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) 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) 1M x 36

(1) 2M x 36

(1) 2M x 36

NONE

20MB

(1) 1M x 36

(1) 4M x 36

NONE

NONE

20MB

(1) 2M x 36

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

20MB

(1) 4M x 36

(1) 1M x 36

NONE

NONE

24MB

(1) 2M x 36

(1) 4M x 36

NONE

NONE

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

26MB

(1) 512K x 36

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

28MB

(1) 1M 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

32MB

(1) 4M x 36

(1) 2M x 36

(1) 2M x 36

NONE

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

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) 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) 1M x 36

(1) 4M x 36

(1) 4M x 36

NONE

36MB

(1) 1M x 36

(1) 8M x 36

NONE

NONE

36MB

(1) 8M x 36

(1) 1M x 36

NONE

NONE

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

40MB

(1) 4M x 36

(1) 2M x 36

(1) 2M x 36

(1) 2M 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

44MB

(1) 8M x 36

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

48MB

(1) 4M x 36

(1) 8M x 36

NONE

NONE

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

DRAM CONFIGURATION (CON’T)

Size

Bank 0

Bank 1

Bank 2

Bank 3

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) 2M 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) 4M x 36

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

64MB

(1) 8M x 36

(1) 8M x 36

NONE

NONE

64MB

(1) 16M x 36

NONE

NONE

NONE

65MB

(1) 16M x 36

(1) 256K x 36

NONE

NONE

66MB

(1) 16M x 36

(1) 256K x 36

(1) 256K x 36

NONE

66MB

(1) 512K x 36

(1) 8M x 36

(1) 8M x 36

NONE

66MB

(1) 512K x 36

(1) 16M x 36

NONE

NONE

67MB

(1) 16M x 36

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

68MB

(1) 1M x 36

(1) 8M x 36

(1) 8M x 36

NONE

68MB

(1) 1M x 36

(1) 16M x 36

NONE

NONE

68MB

(1) 16M x 36

(1) 1M x 36

NONE

NONE

72MB

(1) 2M x 36

(1) 8M x 36

(1) 8M x 36

NONE

72MB

(1) 2M x 36

(1) 16M x 36

NONE

NONE

72MB

(1) 16M x 36

(1) 1M x 36

(1) 1M x 36

NONE

72MB

(1) 16M x 36

(1) 2M x 36

NONE

NONE

76MB

(1) 16M x 36

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

80MB

(1) 4M x 36

(1) 8M x 36

(1) 8M x 36

NONE

80MB

(1) 4M x 36

(1) 16M x 36

NONE

NONE

80MB

(1) 8M x 36

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

80MB

(1) 16M x 36

(1) 2M x 36

(1) 2M x 36

NONE

80MB

(1) 16M x 36

(1) 4M x 36

NONE

NONE

88MB

(1) 16M x 36

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

96MB

(1) 8M x 36

(1) 16M x 36

NONE

NONE

96MB

(1) 16M x 36

(1) 4M x 36

(1) 4M x 36

NONE

96MB

(1) 16M x 36

(1) 8M x 36

NONE

NONE

96MB

(1) 8M x 36

(1) 8M x 36

(1) 8M x 36

NONE

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

112MB

(1) 16M x 36

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

128MB

(1) 16M x 36

(1) 8M x 36

(1) 8M 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

Note: Board also accepts x 32 SIMMs.

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

JP17

JP18

JP19

JP20

JP25

JP26

128KB

1 & 2

2 & 3

2 & 3

1 & 2

1 & 2

1 & 2

256KB (A)

2 & 3

2 & 3

2 & 3

2 & 3

2 & 3

1 & 2

256KB (B)

1 & 2

2 & 3

1 & 2

1 & 2

2 & 3

1 & 2

512KB (A)

2 & 3

2 & 3

2 & 3

2 & 3

2 & 3

2 & 3

512KB (B)

1 & 2

1 & 2

2 & 3

1 & 2

2 & 3

2 & 3

1MB

2 & 3

2 & 3

2 & 3

2 & 3

2 & 3

2 & 3

Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION

Type

JP31

JP32

JP38

JP39

80486SX

pins 1 & 2 closed

Closed

N/A

pins 1 & 2 closed

ODP486SX

pins 1 & 2 closed

Closed

N/A

pins 1 & 2 closed

CX486DX

pins 1 & 2 closed

Closed

N/A

pins 1 & 2 closed

AM486DX

pins 1 & 2 closed

Closed

N/A

pins 1 & 2 closed

80486DX

pins 1 & 2 closed

Closed

N/A

pins 1 & 2 closed

UMCU5S

pins 2 & 3 closed

Closed

N/A

pins 2 & 3 closed

CX486DX2

pins 1 & 2 closed

Closed

N/A

pins 1 & 2 closed

CX486DX2V

pins 1 & 2 closed

Open

pins 2 & 3 closed

pins 1 & 2 closed

AM486DX2

pins 1 & 2 closed

Closed

N/A

pins 1 & 2 closed

(SL)AM486DX2

pins 1 & 2 closed

Open

pins 1 & 2 closed

pins 1 & 2 closed

80486DX2

pins 1 & 2 closed

Closed

N/A

pins 1 & 2 closed

P24D

pins 1 & 2 closed

Closed

N/A

pins 1 & 2 closed

AM486DX4

pins 1 & 2 closed

Open

pins 1 & 2 closed

pins 1 & 2 closed

80486DX4

pins 1 & 2 closed

Open

pins 1 & 2 closed

pins 1 & 2 closed

P24T

pins 1 & 2 closed

Closed

N/A

pins 1 & 2 closed

CPU TYPE CONFIGURATION (CON’T)

Type

JP40

JP41

JP42

JP43

80486SX

pins 1 & 2 closed

N/A

pins 1 & 2 closed

pins 1 & 2 closed

ODP486SX

pins 1 & 2 closed

N/A

pins 1 & 2 closed

pins 2 & 3 closed

CX486DX

pins 1 & 2 closed

N/A

pins 1 & 2 closed

pins 1 & 2 closed

AM486DX

pins 1 & 2 closed

N/A

pins 1 & 2 closed

pins 1 & 2 closed

80486DX

pins 1 & 2 closed

N/A

pins 1 & 2 closed

pins 1 & 2 closed

UMCU5S

pins 2 & 3 closed

N/A

pins 1 & 2 closed

pins 1 & 2 closed

CX486DX2

pins 1 & 2 closed

N/A

pins 1 & 2 closed

pins 1 & 2 closed

CX486DX2V

pins 1 & 2 closed

N/A

pins 1 & 2 closed

pins 1 & 2 closed

AM486DX2

pins 1 & 2 closed

N/A

pins 1 & 2 closed

pins 1 & 2 closed

(SL)AM486DX2

pins 1 & 2 closed

Closed

pins 2 & 3 closed

pins 1 & 2 closed

80486DX2

pins 1 & 2 closed

N/A

pins 1 & 2 closed

pins 1 & 2 closed

P24D

pins 1 & 2 closed

N/A

pins 1 & 2 closed

pins 1 & 2 closed

AM486DX4

pins 1 & 2 closed

Open

pins 1 & 2 closed

pins 1 & 2 closed

80486DX4

pins 1 & 2 closed

N/A

pins 1 & 2 closed

pins 1 & 2 closed

P24T

pins 1 & 2 closed

N/A

pins 1 & 2 closed

pins 2 & 3 closed

CPU TYPE CONFIGURATION (CON’T)

Type

J2

J3

J4

J5

J6

J7

80486SX

Closed

Open

Open

Open

Closed

Open

ODP486SX

Open

Closed

Open

Open

Closed

Open

CX486DX

Open

Closed

Open

Closed

Open

Open

AM486DX

Open

Closed

Open

Open

Closed

Open

80486DX

Open

Closed

Open

Open

Closed

Open

UMCU5S

Closed

Open

Open

Open

Closed

Open

CX486DX2

Open

Closed

Open

Closed

Open

Open

CX486DX2V

Open

Closed

Open

Closed

Open

Open

AM486DX2

Open

Closed

Open

Open

Closed

Open

(SL)AM486DX2

Open

Closed

Open

Open

Closed

Open

80486DX2

Open

Closed

Open

Open

Closed

Open

P24D

Open

Open

Closed

Open

Open

Closed

AM486DX4

Open

Closed

Open

Open

Closed

Open

80486DX4

Open

Closed

Open

Open

Closed

Open

P24T

Open

Open

Closed

Open

Open

Closed

CPU SPEED CONFIGURATION

Speed

JP22

JP23

25MHz

pins 2 & 3 closed

pins 2 & 3 closed

33MHz

pins 1 & 2 closed

pins 1 & 2 closed

40MHz

pins 1 & 2 closed

pins 2 & 3 closed

50iMHz

pins 2 & 3 closed

pins 2 & 3 closed

50MHz

pins 2 & 3 closed

pins 1 & 2 closed

66iMHz

pins 1 & 2 closed

pins 1 & 2 closed

75iMHz

pins 2 & 3 closed

pins 2 & 3 closed

80iMHz

pins 1 & 2 closed

pins 2 & 3 closed

83iMHz

pins 1 & 2 closed

pins 1 & 2 closed

100iMHz

pins 1 & 2 closed

pins 1 & 2 closed

DMA CONFIGURATION

DMA

JP1

JP2

DMA 1

pins 1 & 2 closed

pins 1 & 2 closed

DMA 3

pins 2 & 3 closed

pins 2 & 3 closed

Processor	80486SX/ODP486SX/CX486DX/AM486DX/80486DX/UMCU5S/CX486DX2/ CX486DX2V/AM486DX2/(SL)AM486DX2/80486DX2/P24D/AM486DX4/ 80486DX4/Pentium Overdrive
Processor Speed	25/33/40/50(internal)/50/66(internal)/75(internal)/80(internal)/83(internal)/ 100(internal)MHz
Chip Set	UMC
Max. Onboard DRAM	128MB
Cache	128/256/512/1024KB
BIOS	Award
Dimensions	250mm x 220mm
I/O Options	32-bit PCI slots (3), floppy drive interface, game port, green PC connector, IDE interfaces (2), parallel port, serial ports (2)
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
Floppy drive interface	CN1	IDE interface LED 2	JP15
Serial port 1	CN2	Green PC LED	JP27
Serial port 2	CN3	Green PC connector	JP29
Parallel port	CN4	Turbo switch	JP35
Game port	CN5	Turbo LED	JP36
IDE interface 2	CN6	Speaker	JP37
IDE interface 1	CN7	Reset switch	JP44
External battery	JP12	Power LED & keylock	JP45
IDE interface LED 1	JP14	32-bit PCI slots	PC1 - PC3

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	CMOS memory normal operation	JP13	pins 1 & 2 closed
	CMOS memory clear	JP13	pins 2 & 3 closed
»	PCI bus clock select CPU clock speed	JP21	pins 1 & 2 closed
	PCI bus clock select 1/2 CPU clock speed	JP21	pins 2 & 3 closed

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) 512K x 36	(1) 256K x 36	NONE	NONE
3MB	(1) 256K x 36	(1) 256K x 36	(1) 256K x 36	NONE
4MB	(1) 512K 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) 1M x 36	NONE	NONE	NONE
4MB	(1) 512K x 36	(1) 512K x 36	NONE	NONE
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) 512K x 36	(1) 1M x 36	NONE	NONE
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) 1M x 36	(1) 1M x 36	NONE	NONE
8MB	(1) 2M x 36	NONE	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) 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) 1M x 36	(1) 2M x 36	NONE	NONE
12MB	(1) 2M x 36	(1) 1M x 36	NONE	NONE

DRAM CONFIGURATION (CON’T)
Size	Bank 0	Bank 1	Bank 2	Bank 3
12MB	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36	NONE
14MB	(1) 512K x 36	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36
16MB	(1) 2M 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) 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) 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) 1M x 36	(1) 2M x 36	(1) 2M x 36	NONE
20MB	(1) 1M x 36	(1) 4M x 36	NONE	NONE
20MB	(1) 2M x 36	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36
20MB	(1) 4M x 36	(1) 1M x 36	NONE	NONE
24MB	(1) 2M x 36	(1) 4M x 36	NONE	NONE
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
26MB	(1) 512K x 36	(1) 2M x 36	(1) 2M x 36	(1) 2M x 36
28MB	(1) 1M 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
32MB	(1) 4M x 36	(1) 2M x 36	(1) 2M x 36	NONE
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
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) 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) 1M x 36	(1) 4M x 36	(1) 4M x 36	NONE
36MB	(1) 1M x 36	(1) 8M x 36	NONE	NONE
36MB	(1) 8M x 36	(1) 1M x 36	NONE	NONE
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
40MB	(1) 4M x 36	(1) 2M x 36	(1) 2M x 36	(1) 2M 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
44MB	(1) 8M x 36	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36
48MB	(1) 4M x 36	(1) 8M x 36	NONE	NONE
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

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	JP17	JP18	JP19	JP20	JP25	JP26
128KB	1 & 2	2 & 3	2 & 3	1 & 2	1 & 2	1 & 2
256KB (A)	2 & 3	2 & 3	2 & 3	2 & 3	2 & 3	1 & 2
256KB (B)	1 & 2	2 & 3	1 & 2	1 & 2	2 & 3	1 & 2
512KB (A)	2 & 3	2 & 3	2 & 3	2 & 3	2 & 3	2 & 3
512KB (B)	1 & 2	1 & 2	2 & 3	1 & 2	2 & 3	2 & 3
1MB	2 & 3	2 & 3	2 & 3	2 & 3	2 & 3	2 & 3
Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION
Type	JP31	JP32	JP38	JP39
80486SX	pins 1 & 2 closed	Closed	N/A	pins 1 & 2 closed
ODP486SX	pins 1 & 2 closed	Closed	N/A	pins 1 & 2 closed
CX486DX	pins 1 & 2 closed	Closed	N/A	pins 1 & 2 closed
AM486DX	pins 1 & 2 closed	Closed	N/A	pins 1 & 2 closed
80486DX	pins 1 & 2 closed	Closed	N/A	pins 1 & 2 closed
UMCU5S	pins 2 & 3 closed	Closed	N/A	pins 2 & 3 closed
CX486DX2	pins 1 & 2 closed	Closed	N/A	pins 1 & 2 closed
CX486DX2V	pins 1 & 2 closed	Open	pins 2 & 3 closed	pins 1 & 2 closed
AM486DX2	pins 1 & 2 closed	Closed	N/A	pins 1 & 2 closed
(SL)AM486DX2	pins 1 & 2 closed	Open	pins 1 & 2 closed	pins 1 & 2 closed
80486DX2	pins 1 & 2 closed	Closed	N/A	pins 1 & 2 closed
P24D	pins 1 & 2 closed	Closed	N/A	pins 1 & 2 closed
AM486DX4	pins 1 & 2 closed	Open	pins 1 & 2 closed	pins 1 & 2 closed
80486DX4	pins 1 & 2 closed	Open	pins 1 & 2 closed	pins 1 & 2 closed
P24T	pins 1 & 2 closed	Closed	N/A	pins 1 & 2 closed

CPU TYPE CONFIGURATION (CON’T)
Type	JP40	JP41	JP42	JP43
80486SX	pins 1 & 2 closed	N/A	pins 1 & 2 closed	pins 1 & 2 closed
ODP486SX	pins 1 & 2 closed	N/A	pins 1 & 2 closed	pins 2 & 3 closed
CX486DX	pins 1 & 2 closed	N/A	pins 1 & 2 closed	pins 1 & 2 closed
AM486DX	pins 1 & 2 closed	N/A	pins 1 & 2 closed	pins 1 & 2 closed
80486DX	pins 1 & 2 closed	N/A	pins 1 & 2 closed	pins 1 & 2 closed
UMCU5S	pins 2 & 3 closed	N/A	pins 1 & 2 closed	pins 1 & 2 closed
CX486DX2	pins 1 & 2 closed	N/A	pins 1 & 2 closed	pins 1 & 2 closed
CX486DX2V	pins 1 & 2 closed	N/A	pins 1 & 2 closed	pins 1 & 2 closed
AM486DX2	pins 1 & 2 closed	N/A	pins 1 & 2 closed	pins 1 & 2 closed
(SL)AM486DX2	pins 1 & 2 closed	Closed	pins 2 & 3 closed	pins 1 & 2 closed
80486DX2	pins 1 & 2 closed	N/A	pins 1 & 2 closed	pins 1 & 2 closed
P24D	pins 1 & 2 closed	N/A	pins 1 & 2 closed	pins 1 & 2 closed
AM486DX4	pins 1 & 2 closed	Open	pins 1 & 2 closed	pins 1 & 2 closed
80486DX4	pins 1 & 2 closed	N/A	pins 1 & 2 closed	pins 1 & 2 closed
P24T	pins 1 & 2 closed	N/A	pins 1 & 2 closed	pins 2 & 3 closed

CPU SPEED CONFIGURATION
Speed	JP22	JP23
25MHz	pins 2 & 3 closed	pins 2 & 3 closed
33MHz	pins 1 & 2 closed	pins 1 & 2 closed
40MHz	pins 1 & 2 closed	pins 2 & 3 closed
50iMHz	pins 2 & 3 closed	pins 2 & 3 closed
50MHz	pins 2 & 3 closed	pins 1 & 2 closed
66iMHz	pins 1 & 2 closed	pins 1 & 2 closed
75iMHz	pins 2 & 3 closed	pins 2 & 3 closed
80iMHz	pins 1 & 2 closed	pins 2 & 3 closed
83iMHz	pins 1 & 2 closed	pins 1 & 2 closed
100iMHz	pins 1 & 2 closed	pins 1 & 2 closed

DMA CONFIGURATION
DMA	JP1	JP2
DMA 1	pins 1 & 2 closed	pins 1 & 2 closed
DMA 3	pins 2 & 3 closed	pins 2 & 3 closed