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DIGIS-486E

AMERICAN DIGICOM CORPORATION

DIGIS-486E

Processor

80486SX/80487SX/80486DX

Processor Speed

20/25/33/50MHz

Chip Set

OPTI

Max. Onboard DRAM

128MB

SRAM Cache

64/128/256/512KB

BIOS

AMI

Dimensions

330mm x 218mm

I/O Options

None

NPU Options

4167

CONNECTIONS

Purpose

Location

Purpose

Location

Speaker

J4

Reset switch

S9

Power LED & keylock

J5

   

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

EISA cards configured as ISA

JP1

Closed

 

EISA cards configured as EISA

JP1

Open

I/O bus speed select synchronous with chipset

JP4

pins 1 & 2 closed

 

I/O bus speed select 8MHz

JP4

pins 2 & 3 closed

Monitor type select color

JP5

Closed

 

Monitor type select monochrome

JP5

Open

Reserved for future applications

JP7

N/A

Clock frequency select single

JP9

pins 1 & 2 closed

 

Clock frequency select double

JP9

pins 2 & 3 closed

DRAM CONFIGURATION

Size

Bank 0

Bank 1

4MB

(4) 1M x 9

NONE

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

64MB

(4) 16M x 9

NONE

128MB

(4) 16M x 9

(4) 16M x 9

CACHE CONFIGURATION

Size

Bank 0

Bank 1

U51

U52

U53

U66

64KB

(4) 8K x 8

(4) 8K x 8

(1) 64K x 1

(1) 8K x 8

NONE

(1) 16K x 1

128KB

(4) 32K x 8

NONE

(1) 64K x 1

(1) 8K x 8

NONE

(1) 16K x 1

256KB

(4) 32K x 8

(4) 32K x 8

(1) 64K x 1

(1) 8K x 8

(1) 8K x 8

(1) 16K x 1

512KB

(4) 128K x 8

NONE

(1) 64K x 1

(1) 32K x 8

NONE

(1) 64K x 1

CACHE JUMPER CONFIGURATION

Size

JP11

JP12

JP13

JP14

JP15

JP16

64KB

Open

Open

Open

Open

Open

Open

128KB

Open

Open

Closed

Open

Closed

Open

256KB

Open

Closed

Closed

Closed

Closed

Open

512KB

Closed

Closed

Closed

Closed

Closed

Closed

CPU TYPE CONFIGURATION

Type

JP8

JP10

80486SX

pins 2 & 3 closed

open

80487SX

pins 1 & 2, 3 & 4 closed

pins 1 & 2 closed

80486DX

pins 1 & 2, 3 & 4 closed

pins 2 & 3 closed

CPU SPEED CONFIGURATION

Speed

JP2

JP3

25MHz

Open

Open

33MHz

Closed

Open

40MHz

Open

Closed

50MHz

Closed

Closed