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3486U

UNIDENTIFIED

3486U

Processor

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

Processor Speed

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

Chip Set

UNI

Max. Onboard DRAM

32MB

Cache

32/64/128/256KB

BIOS

AMI

Dimensions

254mm x 218mm

I/O Options

None

NPU Options

80387DX

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

J4

Turbo LED

JP15

Power LED & keylock

J5

Turbo switch

JP17

Speaker

J6

Reset switch

JP18

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Monitor type select color

JP1

Closed

 

Monitor type select monochrome

JP1

Open

CMOS memory normal operation

JP2

pins 1 & 2 closed

 

CMOS memory clear

JP2

pins 2 & 3 closed

CPU type select all CPU types

JP3

Closed

 

CPU type select 80386DX only

JP3

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

32KB

(4) 8K x 8

NONE

(1) 8K x 8

64KB

(4) 8K x 8

(4) 8K x 8

(1) 8K x 8

128KB

(4) 32K x 8

NONE

(1) 8K x 8

256KB

(4) 32K x 8

(4) 32K x 8

(1) 32K x 8

CACHE JUMPER CONFIGURATION

Size

JP5

JP6

JP7

JP8

32KB

Open

pins 2 & 3 closed

Open

Open

64KB

Closed

pins 1 & 2 closed

Open

Open

128KB

Closed

pins 1 & 2, 3 & 4 closed

Closed

Open

256KB

Closed

pins 1 & 2, 4 & 5 closed

Closed

Closed

CPU TYPE CONFIGURATION

Type

JP4

JP9

JP10

JP12

JP14

JP16

80386

Open

1 & 2

2 & 3

2 & 3

Open

2 & 3

80486

Closed

2 & 3

1 & 2

1 & 2

2 & 3

1 & 2

Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION

Type

JP13

80386DX

Open

80486SX (PQFP)

Open

80486SX (PGA)

pins 5 & 6, 9 & 10 closed

80487SX

pins 2 & 3, 4 & 5, 6 & 7, 8 & 9 closed

80486DX (PQFP)

Open

80486DX (PGA)

pins 1 & 2, 4 & 5, 6 & 7, 9 & 10 closed

80486DX2

pins 1 & 2, 4 & 5, 6 & 7, 9 & 10 closed