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