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286 VLSI TURBO MAINBOARD

UNIDENTIFIED

286 VLSI TURBO MAINBOARD

Processor

80286

Processor Speed

12/16MHz

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

External battery

J13

Power LED & keylock

J16

Turbo switch

J14

Reset switch

J18

Turbo LED

J15

Speaker

J19

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

IOCHRDY select normal

J4

pins 1 & 2 closed

 

IOCHRDY select add on card

J4

pins 2 & 3 closed

Monitor type select color

J7

pins 2 & 3 closed

 

Monitor type select monochrome

J7

pins 1 & 2 closed

Shadow BIOS enabled

J8

Open

 

Shadow BIOS disabled

J8

Closed

Parity check enabled

J12

pins 1 & 2 closed

 

Parity check disabled

J12

pins 2 & 3 closed

DRAM CONFIGURATION

Size

Bank 0

P-0

Bank 1

P-1

Bank 2

Bank 3

512KB

(4) 44256

(2) 41256

NONE

NONE

NONE

NONE

640KB

(4) 44256

(2) 41256

(4) 4464

(2) 4164

NONE

NONE

1MB

(4) 44256

(2) 41256

(4) 44256

(2) 41256

NONE

NONE

2MB

NONE

NONE

NONE

NONE

(2) 1M x 9

NONE

4MB

NONE

NONE

NONE

NONE

(2) 1M x 9

(2) 1M x 9

DRAM JUMPER CONFIGURATION

Size

J9

J10

J11

512KB

Open

Closed

Closed

640KB

Closed

Open

Closed

1MB

Closed

Open

Closed

2MB

Open

Open

Open

4MB

Closed

Open

Open