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LASER 286S

LASER COMPUTER, INC.

LASER 286S

Processor

80286 (exact location unidentified)

Processor Speed

16MHz

Chip Set

Unidentified

Maximum Onboard Memory

4MB

Cache

None

BIOS

AMI

Dimensions

330mm x 218mm

I/O Options

Floppy drive interface, game port, IDE interface, parallel port, serial ports (2), riser slot

NPU Options

80287

CONNECTIONS

Function

Label

Function

Label

Front panel connector

J4

IDE interface

J10

Parallel port

J5

Floppy drive interface

J12

Game port

J6

Speaker

J15

Serial port 2

J7

IDE interface LED

JP29

Serial port 1

J8

Riser slot

SL1

External battery

J9

   

USER CONFIGURABLE SETTINGS

Setting

Label

Position

 

Parallel port IRQ select IRQ5

JP16

Pins 2 & 3 closed

 

Parallel port IRQ select IRQ7

JP16

Pins 1 & 2 closed

 

Game port enabled

JP17

Closed

 

Game port disabled

JP17

Open

 

Parallel port address select 378 - 37Fh

JP21

Pins 1 & 2 closed

 

Parallel port address select 278 - 27Fh

JP21

Pins 2 & 3 closed

 

IDE interface enabled

JP28

Closed

 

IDE interface disabled

JP28

Open

 

Floppy drive interface enabled

JP33

Open

 

Floppy drive interface disabled

JP33

Closed

 

Parity enabled

JP34

Closed

 

Parity disabled

JP34

Open

Factory configured - do not alter

SW2/4

N/A

Factory configured - do not alter

SW2/5

N/A

Factory configured - do not alter

SW2/6

N/A

 

Wait state select 0 wait states

SW2/7

Off

 

Wait state select 1 wait state

SW2/7

On

DRAM

Size

Bank 0

Parity 0

Bank 1

Parity 1

Bank 2

Bank 3

512KB

(4) 44256

(2) 41256

None

None

None

None

640KB

(4) 44256

(2) 41256

(4) 4464

(2) 41256

None

None

1MB

(4) 44256

(2) 41256

(4) 44256

(2) 41256

None

None

1152KB

(4) 44256

(2) 41256

(4) 4464

(2) 41256

(2) 256K x 9

None

1.5MB

(4) 44256

(2) 41256

(4) 44256

(2) 41256

(2) 256K x 9

None

1664KB

(4) 44256

(2) 41256

(4) 4464

(2) 41256

(2) 256K x 9

(2) 256K x 9

2MB

(4) 44256

(2) 41256

(4) 44256

(2) 41256

(2) 256K x 9

(2) 256K x 9

2MB

None

None

None

None

(2) 1M x 9

None

4MB

None

None

None

None

(2) 1M x 9

(2) 1M x 9

DRAM SWITCH

Setting

SW2/1

4464 installed in Bank 1

Off

4464 not installed in Bank 1

On

Note: Economic system uses DIP & SIMM memory and Deluxe system uses 1M x 9 SIMM memory.

DRAM SWITCH

Setting

SW2/2

SW2/3

Economic system

On

On

Deluxe system

Off

Off

Note: Economic system uses DIP & SIMM memory and Deluxe system uses 1M x 9 SIMM memory.

DRAM SWITCH (ECONOMIC SYSTEM)

Bank 0

Bank 1

256K SIMM

SW2/8

SW2/9

SW2/10

Installed

Not installed

Not installed

On

On

On

Installed

Installed

Not installed

On

On

Off

Installed

Installed

Bank 0

On

Off

On

Installed

Installed

Banks 0 & 1

On

Off

Off

DRAM SWITCH (DELUXE SYSTEM)

Bank 0

Bank 1

1M SIMM

SW2/8

SW2/9

SW2/10

Not installed

Not installed

Bank 0

On

On

On

Not installed

Not installed

Banks 0 & 1

On

On

Off

SERIAL PORT IRQ

Serial port 1

Serial port 2

JP18

JP19

IRQ4

IRQ3

Pins 2 & 3 closed

Pins 1 & 2 closed

 

IRQ3

IRQ4

Pins 1 & 2 closed

Pins 2 & 3 closed

SERIAL PORT

Serial port 1

Serial port 2

JP20

JP22

JP25

JP26

COM1

COM2

1 & 2

2 & 3

N/A

N/A

 

COM1

COM3

1 & 2

N/A

2 & 3

N/A

 

COM1

COM4

1 & 2

N/A

N/A

2 & 3

 

COM2

COM1

2 & 3

1 & 2

N/A

N/A

 

COM2

COM3

N/A

1 & 2

2 & 3

N/A

 

COM2

COM4

N/A

1 & 2

N/A

2 & 3

 

COM3

COM1

2 & 3

N/A

1 & 2

N/A

 

COM3

COM2

N/A

2 & 3

1 & 2

N/A

 

COM3

COM4

N/A

N/A

1 & 2

2 & 3

 

COM4

COM1

2 & 3

N/A

N/A

1 & 2

 

COM4

COM2

N/A

2 & 3

N/A

1 & 2

 

COM4

COM3

N/A

N/A

2 & 3

1 & 2

Note: Pins designated should be in the closed position.