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





12MHZ TURBO XT MAINBOARD

UNIDENTIFIED

12MHZ TURBO XT MAINBOARD

Processor

8088

Processor Speed

12MHz

Chip Set

Unidentified

Max. Onboard DRAM

640KB

Cache

None

BIOS

Unidentified

Dimensions

220mm x 220mm

I/O Options

None

NPU Options

8087

CONNECTIONS

Purpose

Location

Purpose

Location

Power LED

CN3

Power LED & keylock

CN6

Reset switch

CN4

Turbo LED

CN7

Speaker

CN5

Turbo switch

CN8

USER CONFIGURABLE SETTINGS

Function

Jumper/Switch

Position

Memory wait state select 0 wait states

J6

Open

 

Memory wait state select 1 wait state

J6

Closed

Parity check disabled

SW/1

On

 

Parity check enabled

SW/1

Off

Factory configured - do not alter

SW/2

On

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

256KB

(2) 414256 & (1) 41256

NONE

NONE

512KB

(2) 414256 & (1) 41256

(2) 414256 & (1) 41256

NONE

640KB

(2) 414256 & (1) 41256

(2) 414256 & (1) 41256

(2) 414256 & (1) 41256

DRAM SWITCH CONFIGURATION

Size

SW/3

SW/4

256KB

Off

On

512KB

On

Off

640KB

Off

Off

MONITOR DISPLAY CONFIGURATION

Display

SW/5

SW/6

Color (40 x 25)

Off

On

Color (80 x 25)

On

Off

Monochrome

Off

Off

FLOPPY DRIVE CONFIGURATION

Drives installed

SW/7

SW/8

1

On

On

2

Off

On

3

On

Off

4

Off

Off