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LASER 286X (VER. A)

LASER COMPUTER, INC.

LASER 286X (VER. A)

Processor

80286

Processor Speed

Unidentified

Chip Set

Unidentified

Video Chip Set

None

Maximum Onboard Memory

1MB

Maximum Video Memory

None

Cache

None

BIOS

IBM/Phoenix

Dimensions

330mm x 218mm

I/O Options

None

NPU Options

80287

CONNECTIONS

Purpose

Location

Purpose

Location

Speaker

J1

Power LED & keylock

J8

Turbo switch

J4

External battery

J12

Turbo LED

J5

Reset switch

J14

USER CONFIGURABLE SETTINGS

Function

Label

Position

BIOS enable select active low enable

J2

Pins 1 & 2 closed

 

BIOS enable select active high enable

J2

Pins 2 & 3 closed

 

BIOS type select 27256

J3

Pins 1 & 2 closed

 

BIOS type select 27128

J3

Pins 2 & 3 closed

 

Turbo disabled

J4

Pins 1 & 2 closed

 

Turbo enabled

J4

Pins 2 & 3 closed

 

Wait state select 0 wait states

J6

Closed

 

Wait state select 1 wait state

J6

Open

 

BIOS type select IBM/Phoenix

J13

Pins 2 & 3 closed

 

BIOS type select all other BIOS types

J13

Pins 1 & 2 closed

 

Monitor type select color

SW1

Pins 1 & 2 closed

 

Monitor type select monochrome

SW1

Pins 2 & 3 closed

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

256KB

(9) 41256

None

None

None

512KB

(9) 41256

(9) 41256

None

None

640KB

(9) 41256

(9) 41256

(9) 4164

(9) 4164

1MB

(9) 41256

(9) 41256

(9) 41256

(9) 41256

DRAM JUMPER CONFIGURATION

Size

J9

J10

256KB

Pins 2 & 3 closed

Pins 2 & 3 closed

512KB

Pins 2 & 3 closed

Pins 1 & 2 closed

640KB

Pins 1 & 2 closed

Pins 2 & 3 closed

1MB

Pins 1 & 2 closed

Pins 1 & 2 closed