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MB286T 20

UNIDENTIFIED

MB286T 20

Processor

80286

Processor Speed

20MHz

Chip Set

Goldstar

Max. Onboard DRAM

5MB

Cache

None

BIOS

AMI

Dimensions

220mm x 230mm

I/O Options

None

NPU Options

80287

CONNECTIONS

Purpose

Location

Purpose

Location

Power LED & keylock

J4

Turbo LED

J8

External battery

J2

Reset switch

J11

Turbo switch

J7

Speaker

J13

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

CMOS memory normal operation

J1

Closed

 

CMOS memory clear

J1

Open

Factory configured - do not alter

JP1

N/A

Factory configured - do not alter

JP8

N/A

Factory configured - do not alter

JP9

N/A

Monitor type select color

JP10

Closed

 

Monitor type select monochrome

JP10

Open

DRAM CONFIGURATION

Size

Bank 0

Parity 0

Bank 1

Parity 1

Bank 2

Bank 3

512KB

(4) 44256

(2) 41256

NONE

NONE

NONE

NONE

1MB

(4) 44256

(2) 41256

(4) 44256

(2) 41256

NONE

NONE

2MB

(4) 44256

(2) 41256

(4) 44256

(2) 41256

(2) 256K x 9

(2) 256K x 9

3MB

(4) 44256

(2) 41256

(4) 44256

(2) 41256

(2) 1M x 9

NONE

5MB

(4) 44256

(2) 41256

(4) 44256

(2) 41256

(2) 1M x 9

(2) 1M x 9

Note: This table for use when banks 0 & 1 are used for base memory and banks 2 & 3 are used for expansion memory.

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

512KB

NONE

NONE

(2) 256K x 9

NONE

1MB

NONE

NONE

(2) 256K x 9

(2) 256K x 9

2MB

NONE

NONE

(2) 1M x 9

NONE

2.5MB

NONE

NONE

(2) 256K x 9

(2) 1M x 9

4MB

NONE

NONE

(2) 1M x 9

(2) 1M x 9

Note: This table for use when banks 2 & 3 are used for base memory only.

BASE MEMORY CONFIGURATION

Banks

JP1, JP2, JP3, JP4, JP5 & JP6

Base memory : Banks 2 & 3

pins 1 & 2 closed

Base memory : Banks 0 & 1 (Expansion memory : Banks 2 & 3)

pins 2 & 3 closed

Note: Exact arrangement & size of DIPP sockets unidentified.