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LASER 386M

LASER COMPUTER, INC.

LASER 386M

Processor

80386SX

Processor Speed

25/33MHz

Chip Set

Unidentified

Max. Onboard DRAM

12MB

Cache

Unidentified

BIOS

Unidentified

Dimensions

330mm x 218mm

I/O Options

None

NPU Options

80387SX

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

J22

Turbo switch

J26

Reset switch

J24

Speaker

J28

Power LED & keylock

J25

External memory card

S1

USER CONFIGURABLE SETTINGS

Function

Jumper/Switch

Position

EPROM chip type select 27128 or 2764

J13

pins 2 & 3 closed

 

EPROM chip type select 27256

J13

pins 1 & 2 closed

SYSCLK enabled

J30

pins 2 & 3 closed

 

SYSCLK disabled

J30

pins 1 & 2 closed

Battery type select internal

J31

pins 1 & 2 closed

 

Battery type select external

J31

pins 2 & 3 closed

EGA BIOS access select on board

SW2/1

On

 

EGA BIOS access select adapter card

SW2/1

Off

Memory type select 513KB to 640KB expansion bus enabled

SW2/2

On

 

Memory type select expansion bus disabled

SW2/2

Off

NPU disabled

SW2/3

On

 

NPU enabled

SW2/3

Off

Clock frequency speed select 25/33Mhz

SW2/4

Off

 

Clock frequency speed select 8Mhz

SW2/4

On

Monitor type select monochrome

SW2/5

Off

 

Monitor type select color

SW2/5

On

CACHE CONFIGURATION

Setting

J27

Enabled

pins 2 & 3 closed

Disabled

pins 1 & 2 closed

Note: The size and location of the cache is unidentified.

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

1MB

(4) 256K x 9

NONE

NONE

2MB

(4) 256K x 9

(4) 256K x 9

NONE

3MB

(4) 256K x 9

(4) 256K x 9

(4) 256K x 9

4MB

(4) 1M x 9

NONE

NONE

5MB

(4) 256K x 9

(4) 1M x 9

NONE

6MB

(4) 256K x 9

(4) 256K x 9

(4) 1M x 9

8MB

(4) 1M x 9

(4) 1M x 9

NONE

9MB

(4) 256K x 9

(4) 1M x 9

(4) 1M x 9

12MB

(4) 1M x 9

(4) 1M x 9

(4) 1M x 9

DRAM SWITCH CONFIGURATION

Size

SW1/1

SW1/2

SW1/3

SW1/4

1MB

On

Off

On

On

2MB

Off

On

On

On

3MB

Off

Off

On

On

4MB

On

Off

On

Off

5MB

Off

On

Off

On

6MB

Off

Off

Off

Off

8MB

Off

On

On

Off

9MB

Off

Off

Off

On

12MB

Off

Off

On

Off

MEMORY RELOCATION CONFIGURATION

Setting

SW2/5

Enabled

On

Disabled

Off

TECHNICAL NOTE

Note: The location of pin 1 is unidentified.