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MBVLSI-168 B

UNIDENTIFIED

MBVLSI-168 B

Processor

80286

Processor Speed

12MHz

Chip Set

VLSI

Max. onboard DRAM

4MB

Cache

None

BIOS

AMI

Dimensions

330mm x 218mm

I/O Options

None

NPU Options

80287

CONNECTIONS

Purpose

Location

Purpose

Location

Reset switch

JP1

Turbo Switch

JP4

Power LED & keylock

JP2

Turbo LED

JP5

Speaker

JP3

External battery

JP17

USER CONFIGURABLE SETTINGS

Function

Jumper/Switch

Position

Memory speed select - do not alter

JP6

N/A

Wait state select 0 wait states

JP10

Closed

Wait state select 1 wait state

JP10

Open

BIOS type select 27256

JP11

pins 1 & 2 closed

 

BIOS type select 27128

JP11

pins 2 & 3 closed

Monitor type select color

JP12

pins 1 & 2 closed

 

Monitor type select monochrome

JP12

pins 2 & 3 closed

Power good detect - do not alter

JP16

N/A

DRAM CONFIGURATION

Size

Bank 0

Parity 0

Bank 1

Parity 2

JP7

JP8

JP9

512KB

(4) 44256

(2) 41256

NONE

NONE

Closed

Closed

Closed

640KB

(4) 44256

(2) 41256

(4) 4464

(2) 4164

Closed

Closed

Open

640KB

(4) 44256

(2) 41256

(16) 4164

(2) 4164

Closed

Closed

Open

1MB

(4) 44256

(2) 41256

(4) 44256

(2) 4164

Closed

Open

Closed

1MB

(4) 44256

(2) 41256

(16) 4164

(2) 4164

Closed

Open

Closed

2MB

(18) 411000

NONE

NONE

NONE

Closed

Open

Open

4MB

(18) 411000

NONE

(18) 411000

NONE

Open

Closed

Closed

KEYBOARD CONTROLLER CONFIGURATION

Pin Number

JP13

JP14

JP15

JP18

23

Open

Closed

Open

Open

27

Open

Open

Closed

Open

30

Closed

Open

Open

Open

32

Open

Open

Open

Closed

Note:Make sure that the BIOS and the keyboard controller are compatible before shorting a controller pin for speed change via software.