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AL-6408

UNIDENTIFIED

AL-6408

Processor

8088

Processor Speed

4/8/10MHz

Chip Set

Unidentified

Video Chip Set

None

Maximum Onboard Memory

640KB

Maximum Video Memory

None

Cache

None

BIOS

Unidentified

Dimensions

330mm x 218mm

I/O Options

None

NPU Options

8087

CONNECTIONS

Purpose

Location

Purpose

Location

Turbo switch

JP2

Speaker

P4

Power LED & keylock

JP5

   

USER CONFIGURABLE SETTINGS

Function

Label

Position

 

CPU speed select through keyboard (CTRL, ALT, -)

JP1

Pins 1 & 2 closed

 

CPU speed select through hardware

JP1

Pins 2 & 3 closed

 

Turbo enabled

JP2

Closed

 

Turbo disabled

JP2

Open

 

Keyboard locked

JP4

Open

 

Keyboard unlocked

JP4

Closed

Factory configured - do not alter

SW1/1

Off

 

NPU not installed

SW1/2

On

 

NPU installed

SW1/2

Off

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

256KB

(9) 4164

(9) 4164

(9) 4164

(9) 4164

256KB

(9) 41256

None

None

None

512KB

(9) 41256

(9) 41256

None

None

640KB

(9) 41256

(9) 41256

(9) 4164

(9) 4164

DRAM JUMPER CONFIGURATION

Size

JP3

256KB

Open

256KB

Closed

512KB

Closed

640KB

Closed

DRAM SWITCH CONFIGURATION

Size

SW1/3

SW1/4

128KB

Off

On

192KB

On

Off

256KB

Off

Off

MONITOR SELECTION

Setting

SW1/5

SW1/6

None

On

On

Monochrome

Off

Off

Color 40 x 25

Off

On

Color 80 x 25

On

Off

FLOPPY DRIVE SELECTION

Drives installed

SW1/7

SW1/8

1

On

On

2

Off

On

3

On

Off

4

Off

Off