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KEYBOARD PC

DATA BUSINESS SYSTEMS

KEYBOARD PC

Processor

80286/80386SX

Processor Speed

12/16/20/25MHz

Chip Set

C & T

Max. Onboard DRAM

16MB

Cache

32KB (80386SX model only)

BIOS

AMI

Dimensions

236mm x 205mm

I/O Options

Bus mouse port, external keyboard connector, floppy interface, game port, IDE interface, parallel ports (3), serial ports (2), VGA port, Video port (TTL)

NPU Options

80287/80387SX

VIDEO SWITCH SETTINGS

Function

SW1/4

SW1/5

SW1/6

SW1/7

SW1/8

JP2

Monochrome

Closed

Open

Closed

Open

Open

pins 1 & 2 closed

CGA

Open

Closed

Open

Closed

Closed

pins 2 & 3 closed

EGA

Open

Closed

Closed

Open

Open

pins 1 & 2 closed

Notes:For VGA mode, no switch configuration is necessary.

CONNECTIONS

Purpose

Location

Purpose

Location

DC power

CN1

Hard & floppy drive power

CN15

Video port (TTL)

CN2

Internal IDE drive

CN16

VGA port

CN3

External IDE drive

CN17

Parallel port (LPT1)

CN4

16-bit ISA expansion slot (2/3 size)

ISA1

Parallel port (LPT2)

CN5

Speaker

J1

Parallel port (LPT3)

CN6

Integrated keyboard

J2

Serial port (COM1)

CN7

Turbo LED

J3

Serial port (COM2)

CN8

IDE interface LED

J4

Bus mouse port

CN9

Power LED & keylock

J5

Auxiliary keyboard

CN10

External battery

J6

Game port

CN12

Power switch

J7

Internal floppy drive

CN13

Reset switch

J8

External floppy drive

CN14

   

USER CONFIGURABLE SETTINGS

Function

Jumper/Switch

Position

 

Volume select maximum

CN11

max. clockwise

 

Volume select minimum

CN11

max. counter-clockwise

CMOS memory normal operation

JP1

pins 1 & 2 closed

 

CMOS memory clear

JP1

pins 2 & 3 closed

Memory select 0 wait states

JP3

Open

 

Memory select 1 wait state

JP3

Closed

LPT2 (CN5) enabled

SW1/1

On

 

LPT2 (CN5) disabled

SW1/1

Off

LPT3 (CN6) enabled

SW1/2

On

 

LPT3 (CN6) disabled

SW1/2

Off

Game port (CN12) enabled

SW1/3

On

 

Game port (CN12) disabled

SW1/3

Off

DRAM CONFIGURATION

Size

Bank 0

Bank 1

512KB

(2) 256K x 9

NONE

1MB

(2) 256K x 9

(2) 256K x 9

2MB

(2) 1M x 9

NONE

2.5MB

(2) 256K x 9

(2) 1M x 9

4MB

(2) 1M x 9

(2) 1M x 9

8MB

(2) 4M x 9

NONE

8.5MB

(2) 256K x 9

(2) 4M x 9

10MB

(2) 1M x 9

(2) 4M x 9

16MB

(2) 4M x 9

(2) 4M x 9

CACHE CONFIGURATION

Size

Bank 0

32KB

(4) 16K x 4