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NCR Personal Computer PC-6

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Jumper Settings

Processor

8088

Processor Speed

4.77MHz

Chip Set

None

Max. Onboard DRAM

640KB

Cache

None

BIOS

NCR

Dimensions

330mm x 218mm

I/O Options

Parallel port, serial ports (2), floppy drive interface

NPU Options

8087

31051-1.png

CONNECTIONS

Purpose

Location

Purpose

Location

Serial port 2

COM2

Front control panel

J7

Serial port 1

COM1

Parallel port

LPT

Cooling fan

FAN

Speaker

SPK

Floppy drive interface

J1

   

USER CONFIGURABLE SETTINGS

Function

Jumper/Switch

Position

»

Factory configured - do not alter

JP2

N/A

»

Factory configured - do not alter

JP3

N/A

»

Factory configured - do not alter

JP4

N/A

»

Factory configured - do not alter

JP5

N/A

»

Factory configured - do not alter

JP6

N/A

»

Factory configured - do not alter

JP7

N/A

»

Factory configured - do not alter

SW1/1

N/A

»

NPU absent

SW1/2

On

 

NPU present

SW1/2

Off

»

Factory configured - do not alter

SW1/3

Off

»

Factory configured - do not alter

SW1/4

Off

»

Serial ports enabled

SWA/3

On

 

Serial ports disabled

SWA/3

Off

»

Parallel port enabled

SWA/4

On

 

Parallel port disabled

SWA/4

Off

»

Factory configured - do not alter

SWA/5

On

»

Factory configured - do not alter

SWA/6

N/A

»

Factory configured - do not alter

SWA/7

N/A

»

Factory configured - do not alter

SWA/8

N/A

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

448KB

(9) 4164

(9) 4164

(9) 41256

(9) 4164

512KB

(9) 41256

(9) 41256

NONE

NONE

640KB

(9) 41256

(9) 41256

(9) 4164

NONE

640KB

(9) 41256

(9) 41256

(9) 4164

(9) 4164

DRAM SWITCH CONFIGURATION

Size

SWA/1

SWA/2

256KB

Off

Off

256KB

Off

On

448KB

On

Off

512KB

N/A

N/A

640KB

On

On

640KB

N/A

N/A

FLOPPY DRIVE CONFIGURATION

Drives installed

SW1/7

SW1/8

1

On

On

2

Off

On

3

On

Off

4

Off

Off

MONITOR CONFIGURATION

Size

SW1/5

SW1/6

Monochrome

Off

Off

80 x 25 color

On

Off

40 x 25 color

Off

On

None

On

On

See Also