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3486HN CACHE MAINBOARD

UNIDENTIFIED

3486HN CACHE MAINBOARD

Processor

AM386DX/80386DX/CX486DLC/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

254mm x 220mm

I/O Options

None

NPU Options

80387DX

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

J2

Turbo LED

J44

Power LED & keylock

J42

Reset switch

J45

Turbo switch

J43

Speaker

J46

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

CMOS memory normal operation

J3

pins 2 & 3 closed

 

CMOS memory clear

J3

pins 1 & 2 closed

80386 speed select 33MHz

J4

Closed

 

80386 speed select 40MHz

J4

Open

Factory configured - do not alter

J5

N/A

Monitor type select color

J6

Closed

 

Monitor type select monochrome

J6

Open

80386 PQFP CPU disabled

J24

Closed

 

80386 PQFP CPU enabled

J24

Open

80486 PQFP CPU disabled

J27

Closed

 

80486 PQFP CPU enabled

J27

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) 1M x 9

(4) 4M x 9

20MB

(4) 4M x 9

(4) 1M x 9

32MB

(4) 4M x 9

(4) 4M x 9

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG (U29)

TAG (U30)

64KB

(4) 8K x 8

(4) 8K x 8

(1) 8K x 8

NONE

128KB

(4) 32K x 8

NONE

(1) 8K x 8

NONE

256KB

(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

Open

256KB

Closed

pins 2 & 3 closed

Closed

Closed

CPU TYPE CONFIGURATION

Type

J23

J31

80386DX

pins 1 & 2 closed

Open

CX486DLC

pins 1 & 2 closed

Open

80486SX/DX/DX2

pins 2 & 3 closed

Closed

CPU TYPE CONFIGURATION

Type

J25

J26

Cyrix

Closed

Closed

AMD/Intel

Open

Open

CPU TYPE CONFIGURATION

Type

J28

J29

J41

80486SX (PQFP)

Closed

pins 2 & 3 closed

Open

80486 (PGA)

Open

pins 2 & 3 closed

Open

80487SX

Open

pins 2 & 3 closed

pins 2 & 3 closed

80486DX/DX2

Closed

pins 1 & 2 closed

pins 1 & 2 closed

CPU TYPE CONFIGURATION

Type

J39

J40

80386DX

pins 1 & 2 closed

pins 2 & 3 closed

CX486DLC

pins 1 & 2 closed

pins 2 & 3 closed

80486DX

pins 1 & 2 closed

pins 1 & 2 closed

80486DX2

pins 2 & 3 closed

pins 2 & 3 closed

CPU CLOCK SPEED CONFIGURATION

Speed

J30

J32

40MHz

Closed

Closed

50MHz

Closed

Open

66MHz

Open

Closed

80MHz

Open

Open