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





8MHz SYSTEM BOARD

UNIDENTIFIED

8MHz SYSTEM BOARD

Processor

8088

Processor Speed

4.77/8MHz

Chip Set

Unknown

Max. Onboard DRAM

640KB

Cache

None

BIOS

ATI

Dimensions

330mm x 218mm

I/O Options

None

NPU Options

8087

CONNECTIONS

Purpose

Location

Purpose

Location

Speaker

CN1

Reset switch

JP1

USER CONFIGURABLE SETTINGS

Function

Switch

Position

Factory configured - do not alter

SW1/1

Off

NPU enabled

SW1/2

On

 

NPU disabled

SW1/2

Off

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

JP3

SW1/3

SW1/4

256KB

(9) 4164

(9) 4164

(9) 4164

(9) 4164

pins 1 & 2

On

Off

640KB

(9) 41256

(9) 41256

(9) 41256

(9) 41256

pins 2 & 3

Off

On

Note:Pins designated should be in the closed position.

The exact locations of Banks 0 through 4 is unknown.

MONITOR TYPE CONFIGURATION

Type

SW1/5

SW1/6

No display adapter

On

On

Color (40 x 20 mode)

Off

On

Color (80 x 25 mode)

On

Off

Monochrome or both

Off

Off

FLOPPY DRIVES INSTALLED

Drive(s) Installed

SW1/switch 7

SW1/switch 8

1

On

On

2

Off

On

3

On

Off

4

Off

Off

CPU SPEED CONFIGURATION

Speed

JP2

4.77MHz

pins 2 & 3 closed

8MHz

Open

Note:The system runs at 8MHz when the power is switched on but can be changed to 4mhz by pressing <CTRL> <ALT> <-> and closing pins 1 & 2. To return back to high speed, press the three keys once again.