...because we can't all be on the bleeding edge...





LASER 8088 MAIN BOARD (VER. 2)

LASER COMPUTER, INC.

LASER 8088 MAIN BOARD (VER. 2)

Processor

8088

Processor Speed

10MHz

Chipset

Unidentified

Maximum Onboard Memory

1664KB DRAM

BIOS

Unidentified

Dimensions

270 x 218mm

I/O Options

None

NPU Options

8087

CONNECTIONS

Purpose

Location

Purpose

Location

Speaker

J11

Power LED & keylock

J12

USER CONFIGURABLE SETTINGS

Function

Label

Position

 

Parity enabled

JP7

Pins 1 & 2 closed

 

Parity disabled

JP7

Pins 2 & 3 closed

Factory configured - do not alter

SW1/1

Off

NPU not installed

SW1/2

Off

 

NPU installed

SW1/2

On

Factory configured - do not alter

SW2/7

N/A

Factory configured - do not alter

SW2/8

N/A

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

P2

Bank 3

P3

256KB

(9) 41256

None

None

None

None

None

512KB

(9) 41256

(9) 41256

None

None

None

None

576KB

(9) 41256

(9) 41256

(2) 4464

(1) 4164

None

None

640KB

(9) 41256

(9) 41256

(2) 4464

(1) 4164

(2) 4464

(1) 4164

896KB

(9) 41256

(9) 41256

(2) 4464

(1) 4164

(2) 4464

(1) 4164

1152KB

(9) 41256

(9) 41256

(2) 4464

(1) 4164

(2) 4464

(1) 4164

1408KB

(9) 41256

(9) 41256

(2) 4464

(1) 4164

(2) 4464

(1) 4164

1664KB

(9) 41256

(9) 41256

(2) 4464

(1) 4164

(2) 4464

(1) 4164

DRAM CONFIGURATION

Size

Bank 4

Bank 5

Bank 6

Bank 7

256KB

None

None

None

None

512KB

None

None

None

None

576KB

None

None

None

None

640KB

None

None

None

None

896KB

(9) 4164

None

None

None

1152KB

(9) 4164

(9) 4164

None

None

1408KB

(9) 4164

(9) 4164

(9) 4164

None

1664KB

(9) 4164

(9) 4164

(9) 4164

(9) 4164

DRAM CONFIGURATION

Size

SW1/3

SW1/4

256KB

On

On

512KB

Off

On

576KB

On

Off

640KB

Off

Off

896KB

Off

Off

1152KB

Off

Off

1408KB

Off

Off

1664KB

Off

Off

EXPANDED MEMORY BANK 4 AND 5 ADDRESS

Setting

SW2/1

SW2/2

SW2/3

208h

Off

On

On

218h

On

Off

On

258h

Off

Off

On

268h

On

On

Off

2A8h

Off

On

Off

2B8h

On

Off

Off

2E8h

Off

Off

Off

Disabled

On

On

On

EXPANDED MEMORY BANK 6 AND 7 ADDRESS

Setting

SW2/4

SW2/5

SW2/6

208h

Off

On

On

218h

On

Off

On

258h

Off

Off

On

268h

On

On

Off

2A8h

Off

On

Off

2B8h

On

Off

Off

2E8h

Off

Off

Off

Disabled

On

On

On

FLOPPY DRIVE CONFIGURATION

Setting

SW1/7

SW1/8

1 drive attached

On

On

2 drives attached

Off

On

3 drives attached

On

Off

4 drives attached

Off

Off

MONITOR TYPE SELECTION

Setting

SW1/5

SW1/6

Monochrome

Off

Off

CGA, 40 x 25

Off

On

CGA, 80 x 25

On

Off

EGA or no monitor

On

On