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MB-1212V

UNIDENTIFIED

MB-1212V

Processor

80286

Processor Speed

10/12MHz

Chip Set

VLSI

Max. Onboard DRAM

4MB

Cache

None

BIOS

AMI/Award/Phoenix

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

Position

Memory speed select 100ns

JP6

pins 1 & 2 closed

 

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 signal detect from power supply

JP16

see note

 

Power good signal detect from board

JP16

see note

 

Parity check enabled

JP19

pins 1 & 2 closed

 

Parity check disabled

JP19

pins 2 & 3 closed

Note: JP19 is an optional jumper and may not be present on all boards. The settings for JP16 are unidentified.

DRAM CONFIGURATION

Size

Bank 0

Bank 0A

Bank 1

Bank 1A

Bank 1B

512KB

NONE

(4) 44256

NONE

NONE

NONE

640KB

NONE

(4) 44256

NONE

NONE

(4) 4164

640KB

NONE

(4) 44256

(18) 4164

NONE

NONE

1MB

NONE

(4) 44256

NONE

(4) 44256

NONE

2MB

(18) 41100

NONE

NONE

NONE

NONE

4MB

(18) 41100

NONE

(18) 41100

NONE

NONE

Note: See table below for parity configuration.

DRAM PARITY CONFIGURATION

Size

P 0

P 1

512KB

(2) 41256

NONE

640KB

(2) 41256

NONE

640KB

(2) 41256

NONE

1MB

(2) 41256

(2) 41256

2MB

NONE

NONE

4MB

NONE

NONE

DRAM JUMPER CONFIGURATION

Size

JP7

JP8

JP9

512KB

Closed

Closed

Closed

640KB

Closed

Closed

Open

1MB

Closed

Open

Closed

2MB

Closed

Open

Open

4MB

Open

Closed

Closed

KEYBOARD BIOS CONFIGURATION

Setting

JP13

JP14

JP15

JP18

Controller on pin 30

Closed

Open

Open

Open

Controller on pin 23

Open

Closed

Open

Open

Controller on pin 27

Open

Open

Closed

Open

Controller on pin 32

Open

Open

Open

Closed