RELIALOGIC CORPORATION PRIVATE, LTD.

R486DX 33 MIBBC

Processor

80486SX/80487SX/80486DX/80486DX2

Processor Speed

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

Chip Set

UMC

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

Power LED & keylock

J1

Turbo switch

J4

Speaker

J2

Reset switch

J5

Turbo LED

J3

External battery

J6

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

»

Monitor type select CGA

JP5

Closed

 

Monitor type select monochrome EGA/VGA

JP5

Open

»

Battery type select internal

JP7

Closed

 

Battery type select external

JP7

Open

»

Factory configured - do not alter

JP8

Open

»

Factory configured - do not alter

JP9

pins 1 & 2 closed

DRAM CONFIGURATION

Size

Bank 0

Bank 1

1MB

(4) 256K x 9

NONE

2MB

(4) 256K x 9

(1) 256K x 36

4MB

(4) 1M x 9

NONE

5MB

(4) 256K x 9

(1) 1M x 36

8MB

(4) 1M x 9

(1) 1M x 36

16MB

(4) 4M x 9

NONE

20MB

(4) 1M x 9

(1) 4M x 36

32MB

(4) 4M x 9

(1) 4M x 36

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG

64KB

(4) 8K x 8

(4) 8K x 8

(2) 16K x 4

128KB

(4) 32K x 8

NONE

(2) 16K x 4

256KB

(4) 32K x 8

(4) 32K x 8

(2) 16K x 4

CACHE JUMPER CONFIGURATION

Size

W10

W11

W12

W13

W14

W15

W16

W17

64KB

Open

Open

Open

Open

1 & 2

1 & 2

1 & 2

Open

128KB

Closed

Open

Closed

Open

1 & 2

1 & 2

2 & 3

1 & 2

256KB

Closed

Closed

Closed

Closed

2 & 3

2 & 3

1 & 2

2 & 3

Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION

Type

JP2

JP11

80486SX

Open

pins 2 & 3 closed

80487SX

pins 1 & 2 closed

pins 1 & 2, 3 & 4 closed

80486DX/DX2

pins 2 & 3 closed

pins 1 & 2, 3 & 4 closed