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





TURBO 640

UNIDENTIFIED

TURBO 640

Processor

8088

Processor Speed

8MHz

Chip Set

None

Max. onboard DRAM

640KB

Cache

None

BIOS

Unknown

Dimensions

330mm x 218mm

I/O Options

None

NPU Options

8087

CONNECTIONS

Purpose

Location

Purpose

Location

Turbo switch

JP5

Power/Turbo LED

JP9

Keylock

JP8

Speaker

P4

Note:The exact locations of JP5 and JP8 are unknown.

USER CONFIGURABLE SETTINGS

Function

Jumper/Switch

Position

Factory configured - do not alter

JP1

Unknown

Factory configured - do not alter

SW1/switch 1

Off

NPU enabled

SW1/switch 2

Off

 

NPU disabled

SW1/switch 2

On

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

JP3

JP4

256KB

(8) 4164

(8) 4164

(8) 4164

(8) 4164

A & B closed

B closed

256KB

(8) 41256

NONE

NONE

NONE

C & D closed

A closed

512KB

(8) 41256

(8) 41256

NONE

NONE

C & D closed

A closed

640KB

(8) 41256

(8) 41256

(8) 4164KB

(8) 4164KB

C & D closed

A closed

TURBO CONFIGURATION

Mode

JP6

JP7

Software switch

Open

Closed

Hardware switch

Closed

Open

DISPLAY CONFIGURATION

Display Adapter

SW1/5

SW1/6

SW1/7

SW1/8

None

On

On

N/A

N/A

Color/Graphics (40x20)

Off

On

On

On

Color/Graphics (80x25)

On

Off

On

On

Monochrome or Both

Off

Off

On

On

FLOPPY DRIVE CONFIGURATION

Drives Installed

SW1/7

SW1/8

1

On

On

2

Off

On

3

On

Off

4

Off

Off