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DIGIS-3486HN Motherboard Settings and Configuration






AMERICAN DIGICOM CORPORATION

DIGIS-3486HN

Processor

CX486DLC/80386DX/80486SX/80487SX/80486DX/80486DX2

Processor Speed

20/25/33/40/50(internal)/50/66(internal)MHz

Chip Set

OPTi

Max. Onboard DRAM

32MB

Cache

64/128/256KB

BIOS

AMI

Dimensions

330mm x 218mm

I/O Options

None

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

J2

Turbo LED

J44

Power LED & keylock

J42

Reset switch

J45

Turbo switch

J43

Speaker

SPKR

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

CMOS memory normal operation

J3

pins 2 & 3 closed

 

CMOS memory clear

J3

pins 1 & 2 closed

Monitor type select color

J6

Closed

 

Monitor type select monochrome

J6

Open

Supports CYRIX CPU

JP25

Closed

 

Supports other CPU

JP26

Open

DRAM CONFIGURATION

Size

Bank 0

Bank 1

1MB

(4) 256K x 9

NONE

2MB

(4) 256K x 9

(4) 256K x 9

4MB

(4)1M x 9

NONE

5MB

(4) 256K x 9

(4) 1M x 9

8MB

(4) 1M x 9

(4) 1M x 9

16MB

(4) 4M x 9

NONE

20MB

(4) 4M x 9

(4) 4M x 9

20MB

(4) 1M x 9

(4) 1M x 9

32MB

(4) 4M x 9

(4) 4M x 9

CACHE CONFIGURATION

Size

Max Cachable

Bank 0

Bank 1

TAG/U29

TAG/U30

64KB

8MB

(4) 8K x 8

(4) 8K x 8

(1) 8K x 8

NONE

128KB

16MB

(4) 32K x 8

NONE

(1) 8K x 8

NONE

256KB

32MB

(4) 32K x 8

(4) 32K x 8

(1) 8K x 8

(1) 8K x 8

CACHE JUMPER CONFIGURATION

Size

J34

J36

J37

J38

64KB

Open

pins 2 & 3 closed

Open

Open

128KB

Closed

pins 1 & 2 closed

Closed

Closed

256KB

Closed

pins 2 & 3 closed

Closed

Closed

CPU SPEED CONFIGURATION

Speed

J30

J32

J39

J40

20MHz

Closed

Closed

pins 1 & 2 closed

pins 1 & 2 closed

25MHz

Open

Open

pins 1 & 2 closed

pins 1 & 2 closed

33MHz

Open

Closed

pins 1 & 2 closed

pins 1 & 2 closed

40MHz

Closed

Closed

pins 1 & 2 closed

pins 2 & 3 closed

50i MHz

Open

Open

pins 1 & 2 closed

pins 1 & 2 closed

50MHz

Open

Open

pins 2 & 3 closed

pins 2 & 3 closed

66i MHz

Open

Closed

pins 2 & 3 closed

pins 2 & 3 closed

CPU TYPE CONFIGURATION

Type

J23

J24

J27

J28

J29

J31

J41

CX486DLC

1 & 2

Closed

N/A

N/A

N/A

Open

N/A

80386DX PGA

1 & 2

Closed

N/A

N/A

N/A

Open

N/A

80386DX PQFP

1 & 2

Open

N/A

N/A

N/A

Open

N/A

80486SX PGA

2 & 3

N/A

Closed

Open

2 & 3

Closed

Open

80486SX PQFP

2 & 3

N/A

Open

Closed

2 & 3

Closed

Open

80487SX

2 & 3

N/A

Closed

Open

2 & 3

Closed

2 & 3

80486DX

2 & 3

N/A

Closed

Closed

1 & 2

Closed

1 & 2

80486DX2

2 & 3

N/A

Closed

Closed

1 & 2

Closed

1 & 2

Note:Pins designated should be in the closed position.










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