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LASER TURBO XT-2

LASER COMPUTER, INC.

LASER TURBO XT-2

Processor

8088

Processor Speed

Unidentified

Chip Set

Unidentified

Video Chip Set

None

Maximum Onboard Memory

1MB

Maximum Video Memory

None

Cache

None

BIOS

Unidentified

Dimensions

330mm x 218mm

I/O Options

None

NPU Options

8087

CONNECTIONS

Purpose

Location

Purpose

Location

Auxiliary power connector

CN1

Front panel connector

J12

Speaker

J11

Reset switch

JP3

USER CONFIGURABLE SETTINGS

Function

Label

Position

 

Parity check enabled

JP5

Pins 1 & 2 closed

 

Parity check disabled

JP5

Pins 2 & 3 closed

Factory configured - do not alter

SW1/1

Off

 

NPU not installed

SW1/2

On

 

NPU installed

SW1/2

Off

Factory configured - do not alter

SW1/4

Unidentified

Factory configured - do not alter

SW2/4

Unidentified

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

512KB (A)

None

None

None

(16) 41256

512KB (B)

None

(16) 41256

None

None

640KB (A)

(4) 4464

None

None

(16) 41256

1MB (B)

None

(16) 41256

(16) 41256

None

Note: A = conventional memory. B = expanded memory.

DRAM PARITY CONFIGURATION

Size

U25/U41

U35/U40

U58/U59

U76/U77

512KB (A)

(2) 41256

None

None

None

512KB (B)

None

None

(2) 41256

None

640KB (A)

(2) 41256

(2) 4164

None

None

1MB (B)

None

None

(2) 41256

(2) 41256

Note: A = conventional memory. B = expanded memory.

DRAM SWITCH CONFIGURATION

Size

SW1/3

512KB

On

640KB

Off

FLOPPY DRIVE SELECTION

Drives installed

SW1/7

SW1/8

1

On

On

2

Off

On

3

On

Off

4

Off

Off

MONITOR SELECTION

Type

SW1/5

SW1/6

EGA

On

On

Color (40 x 25)

Off

On

Color (80 x 25)

On

Off

Monochrome

Off

Off

I/O PORT ADDRESS SELECTION

Address

SW2/1

SW2/2

SW2/3

208

Off

On

On

218

On

Off

On

258

Off

Off

On

268

On

On

Off

2A8

Off

On

Off

2B8

On

Off

Off

2E8

Off

Off

Off

Expansion memory disabled

On

On

On