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286E

AMERICAN DIGICOM CORPORATION

286E

Processor

80286

Processor Speed

12/16/20MHz

Chip Set

Suntac

Max. Onboard DRAM

5MB

Cache

None

BIOS

AMI

Dimensions

230mm x 220mm

I/O Options

None

NPU Options

80287

CONNECTIONS

Purpose

Location

Purpose

Location

Power LED & keylock

JP1

Turbo LED

JP4

Speaker

JP2

Turbo switch

JP5

Reset switch

JP3

External battery

JP18

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

 

NPU speed select CPU CLK/1

JP7 & JP8

pins 1 & 2 closed

 

NPU speed select CPU CLK/3

JP7 & JP8

pins 2 & 3 closed

Monitor type select color

JP9

Closed

 

Monitor type select monochrome

JP9

Open

Parity check enabled

JP10

Closed

 

Parity check disabled

JP10

Open

CPU speed select 16/20MHz

JP12

pins 1 & 2 closed

 

CPU speed select 12MHz

JP12

pins 2 & 3 closed

CMOS memory normal operation

JP17

pins 1 & 2 closed

 

CMOS memory clear

JP17

pins 2 & 3 closed

DRAM CONFIGURATION

Size

Bank 0

Parity (P-0)

Bank 1

Parity (P-1)

Bank 2

Bank 3

512KB

(4) 44256

(2) 41256

NONE

NONE

NONE

NONE

512KB

NONE

NONE

NONE

NONE

(2) 256K x 9

NONE

1MB

(4) 44256

(2) 41256

(4) 44256

(2) 41256

NONE

NONE

1MB

NONE

NONE

NONE

NONE

(2) 256K x 9

(2) 256K x 9

2MB

(4) 44256

(2) 41256

(4) 44256

(2) 41256

(2) 256K x 9

(2) 256K x 9

2MB

NONE

NONE

NONE

NONE

(2) 1M x 9

NONE

3MB

(4) 44256

(2) 41256

(4) 44256

(2) 41256

(2) 1M x 9

NONE

4MB

NONE

NONE

NONE

NONE

(2) 1M x 9

(2) 1M x 9

5MB

(4) 44256

(2) 41256

(4) 44256

(2) 41256

(2) 1M x 9

(2) 1M x 9

Note:Banks 2 & 3 are considered Banks 0 & 1, respectively, when filled without using DIP.

However, they will be referred to throughout the text as Banks 2 & 3 to avoid confusion.

DRAM JUMPER CONFIGURATION

Size

JP13

JP14

JP15

JP16

512KB

pins 2 & 3 closed

pins 2 & 3 closed

pins 2 & 3 closed

pins 2 & 3 closed

512KB

pins 1 & 2 closed

pins 1 & 2 closed

pins 1 & 2 closed

pins 1 & 2 closed

1MB

pins 2 & 3 closed

pins 2 & 3 closed

pins 2 & 3 closed

pins 2 & 3 closed

1MB

pins 1 & 2 closed

pins 1 & 2 closed

pins 1 & 2 closed

pins 1 & 2 closed

2MB

pins 2 & 3 closed

pins 2 & 3 closed

pins 2 & 3 closed

pins 2 & 3 closed

2MB

pins 1 & 2 closed

pins 1 & 2 closed

pins 1 & 2 closed

pins 1 & 2 closed

3MB

pins 2 & 3 closed

pins 2 & 3 closed

pins 2 & 3 closed

pins 2 & 3 closed

4MB

pins 1 & 2 closed

pins 1 & 2 closed

pins 1 & 2 closed

pins 1 & 2 closed

5MB

pins 2 & 3 closed

pins 2 & 3 closed

pins 2 & 3 closed

pins 2 & 3 closed

NPU SPEED CONFIGURATION

Speed

JP7

JP8

CLK/1

pins 1 & 2 closed

pins 1 & 2 closed

CLK/3

pins 2 & 3 closed

pins 2 & 3 closed