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R486DX 33 MIBBC

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