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JDR-V486-SX33/DX33/DX2 66

MODULAR CIRCUIT TECHNOLOGY

JDR-V486-SX33/DX33/DX2 66

Processor

80486SX/80486DX/80486DX2

Processor Speed

25/33/66(internal)MHz

Chip Set

UMC

Max. Onboard DRAM

32MB

Cache

128/256KB

BIOS

AMI

Dimensions

330mm x 218mm

I/O Options

32-bit VESA local bus slots (2)

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

J1

Speaker

J13

Turbo LED

J10

Power LED & keylock

J14

Turbo switch

J11

32-bit VESA local bus slots

SL1 - SL2

Reset switch

J12

   

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Monitor type select color

JP13

pins 2 & 3 closed

 

Monitor type select monochrome

JP13

pins 1 & 2 closed

Factory configured - do not alter

JP24

N/A

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

17MB

(4) 256K x 9

(4) 4M x 9

20MB

(4) 1M x 9

(4) 4M x 9

32MB

(4) 4M x 9

(4) 4M x 9

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG

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

JP22

JP23

JP27

JP28

128KB

pins 2 & 3 closed

Open

Closed

pins 2 & 3 closed

256KB

pins 1 & 2 closed

Closed

Closed

pins 2 & 3 closed

CPU TYPE CONFIGURATION

Type

JP25

JP26

80486SX

pins 1 & 2, 3 & 4 closed

Open

80486DX

pins 1 & 2, 3 & 4 closed

pins 1 & 2 closed

80486DX2

pins 1 & 2, 3 & 4 closed

pins 1 & 2 closed

CPU SPEED CONFIGURATION

Speed

JP18

JP19

JP20

JP21

25MHz

Closed

Closed

Open

Open

33MHz

Open

Closed

Open

Open

66iMHz

Open

Closed

Open

Open

VESA WAIT STATE CONFIGURATION

Wait states

JP16

0 wait states

pins 1 & 2 closed

1 wait state

pins 2 & 3 closed

BUS SPEED CONFIGURATION

CPU speed

JP15

<= 33MHz

Open

> 33MHz

Closed