HwMuseum | Index

AMERICAN DIGICOM CORPORATION

486M

Processor

80486SX/80486DX

Processor Speed

33/50MHz

Chip Set

OPTI

Max. Onboard DRAM

32MB

Cache

64/256KB

BIOS

AMI

Dimensions

330mm x 218mm

I/O Options

None

NPU Options

4167

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

J9

Turbo switch

J12

Power LED & keylock

J10

Turbo LED

J13

Speaker

J11

Reset switch

J14

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

»

Monitor type select color

J1

Closed

 

Monitor type select monochrome

J1

Open

»

CMOS memory normal operation

J8

pins 2 & 3 closed

 

CMOS memory clear

J8

pins 1 & 2 closed

»

CPU speed select 33MHz

J16

pins 1 & 2 closed

 

CPU speed select 50MHz

J16

pins 2 & 3 closed

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

32MB

(4) 4M x 9

(4) 4M x 9

CACHE CONFIGURATION

Size

Bank 0

TAG

64KB

(8) 8K x 8

(3) 4K x 4

256KB

(8) 32K x 8

(3) 16K x 4

CACHE CONFIGURATION

Size

JP5

JP6

JP7

64KB

Open

Open

Open

256KB

Closed

Closed

Closed

CPU TYPE CONFIGURATION

Type

J2

J3

J4

80486SX

Open

Open

pins 2 & 3 closed

80486DX

Closed

pins 2 & 3 closed

pins 1 & 2 closed