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486VL3H (MV020)

EDOM INTERNATIONAL CORPORATION

486VL3H (MV020)

Processor

CX486M6/80486SX/80487SX/80486DX/80486DX2/Pentium Overdrive

Processor Speed

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

Chip Set

Unidentified

Max. Onboard DRAM

64MB

Cache

64/128/256KB

BIOS

AMI/Award

Dimensions

250mm x 220mm

I/O Options

32-bit VESA local bus slots (3)

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

J1

Power LED & keylock

JP23

Reset switch

JP16

Turbo LED

JP24

Speaker

JP21

32-bit VESA local bus slots

SL1 - SL3

Turbo switch

JP22

   

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

CMOS memory normal operation

JP1

pins 1 & 2 closed

 

CMOS memory clear

JP1

pins 2 & 3 closed

Factory configured - do not alter

JP2

pins 1 & 2 closed

Factory configured - do not alter

JP7

pins 2 & 3 closed

Factory configured - do not alter

JP9

Open

Factory configured - do not alter

JP18

pins 1 & 2 closed

PQFP CPU disabled

JP20

Open

 

PQFP CPU enabled

JP20

Closed

Monitor type select monochrome

JP26

Open

 

Monitor type select color

JP26

Closed

Factory configured - do not alter

JP27

pins 1 & 2 closed

Factory configured - do not alter

P1

Open

Note: The loactions of JP7, JP18 &P1 are unidentified.

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

5MB

(4) 1M x 9

(4) 256K x 9

8MB

(4) 1M x 9

(4) 1M x 9

6MB

(4) 256K x 9

(4) 256K 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

64MB

(4) 16M x 9

NONE

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG

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

Note: The location of the TAG chip is unidentified.

CACHE JUMPER CONFIGURATION

Size

JP5

JP12

JP15

JP25

64KB

Open

1 & 2

Open

Open

128KB

3 & 4

Open

pins 2 & 3 closed

Closed

256KB

1 & 2, 3 & 4

Open

pins 1 & 2 closed

Closed

Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION

Type

JP8

JP10

80486SX

Open

pins 2 & 3 closed

80487SX

pins 2 & 3 closed

pins 1 & 2, 3 & 4 closed

80486DX

pins 1 & 2 closed

pins 1 & 2, 3 & 4 closed

80486DX2

pins 1 & 2 closed

pins 1 & 2, 3 & 4 closed

CPU SPEED CONFIGURATION

Speed

JP13

25MHz

pins 1 & 2, 5 & 6 closed

33MHz

pins 1 & 2, 3 & 4 closed

40MHz

pins 5 & 6 closed

50iMHz

pins 1 & 2, 5 & 6 closed

50MHz

pins 3 & 4 closed

66iMHz

pins 1 & 2, 3 & 4 closed

VESA WAIT STATE CONFIGURATION

Wait states

JP17

0 wait states

Open

1 wait state

Closed

BUS SPEED CONFIGURATION

CPU speed

JP11

JP19

<= 33MHz

pins 2 & 3 closed

Open

> 33MHz

pins 1 & 2 closed

Closed