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SYSTEM BOARD PCD-4LDX

SIEMENS NIXDORF INFORMATIONSSYSTEME AG

SYSTEM BOARD PCD-4LDX

Processor

80486SX/80487SX/80486DX/80486DX2

Processor Speed

25/33/50(internal)/66(internal)MHz

Chip Set

Unidentified

Video Chip Set

Unidentified

Maximum Onboard Memory

32MB

Maximum Video Memory

2MB

Cache

64/128/256KB

BIOS

Unidentified

Dimensions

330mm x 218mm

I/O Options

Ethernet 10Base5 connector, Ethernet 10BaseT connector, floppy drive interface, IDE interface, parallel port, PS/2 mouse port, serial ports (2), VGA feature connector, VGA port, riser slot

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

VGA port

CN1

Floppy drive interface

CN8

Parallel port

CN2

IDE interface

CN9

Serial port 2

CN3

VGA feature connector

CN10

Serial port 1

CN4

External battery

CN11

PS/2 mouse port

CN5

Speaker

J13

Ethernet 10Base5 connector

CN6

Front panel connector

JP30

Ethernet 10BaseT connector

CN7

Riser slot

SL1

USER CONFIGURABLE SETTINGS

Function

Label

Position

?

Factory configured - do not alter

CN12

Unidentified

?

Factory configured - do not alter

CN13

Unidentified

?

Factory configured - do not alter

CN14

Unidentified

?

Internal speaker enabled

J13

Pins 1 & 2 closed

 

Internal speaker disabled

J13

Open

 

External speaker enabled

J13

Closed

?

Monitor type select color

JP10

Closed

 

Monitor type select monochrome

JP10

Open

?

PS/2 mouse IRQ12 enabled

JP11

Closed

 

PS/2 mouse IRQ12 disabled

JP11

Open

?

On board video enabled

JP25

Closed

 

On board video disabled

JP25

Open

?

LAN interface enabled

JP31

Open

 

LAN interface disabled

JP31

Closed

?

System booted from hard drive

JP32

Open

 

System booted from network

JP32

Closed

?

LAN type select 10BaseT

JP37

Pins 1 & 2 closed

 

LAN type select 10Base5

JP37

Pins 2 & 3 closed

DRAM CONFIGURATION

Size

Bank 0

Bank 1

4MB

(4) 1M x 9

None

8MB

(4) 1M x 9

(4) 1M x 9

16MB

(4) 4M x 9

None

20MB

(4) 1M x 9

(4) 4M x 9

20MB

(4) 4M x 9

(4) 1M x 9

32MB

(4) 4M x 9

(4) 4M x 9

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG (U48)

TAG (U49)

TAG (U50)

64KB

(4) 8K x 8

(4) 8K x 8

(1) 8K x 8

None

(1) 16K x 4

128KB

(4) 32K x 8

None

(1) 8K x 8

None

(1) 16K x 4

256KB

(4) 32K x 8

(4) 32K x 8

(1) 8K x 8

(1) 8K x 8

(1) 16K x 4

Note: The location of banks 0 & 1 and the TAG are unidentified.

CACHE JUMPER CONFIGURATION

Size

JP12

JP13

JP14

JP15

JP16

JP17

None

2 & 3

2 & 3

Open

Open

Open

Open

64KB

2 & 3

2 & 3

Open

Open

Open

Open

128KB

1 & 2

1 & 2

Closed

Open

Open

Closed

256KB

2 & 3

2 & 3

Closed

Closed

Closed

Closed

Note: Pins designated should be in the closed position.

VIDEO MEMORY CONFIGURATION

Size

Bank 0

Bank 1

1MB

1MB

None

2MB

1MB

1MB

Note: The size of the video memory chips is unidentified.

CPU SPEED SELECTION

Speed

JP5

JP6

25MHz

Closed

Open

33MHz

Open

Closed

50iMHz

Closed

Open

66iMHz

Open

Closed

CPU TYPE SELECTION

Type

JP1

JP2

JP3

80486SX

Open

Pins 1 & 2 closed

Open

80486DX

Pins 1 & 2 closed

Pins 2 & 3 closed

Closed

80486DX2

Pins 1 & 2 closed

Pins 2 & 3 closed

Closed

LAN DMA CHANNEL SELECTION

Channel

JP35

JP36

5

Pins 1 & 2 closed

Pins 1 & 2 closed

 

6

Pins 3 & 4 closed

Pins 3 & 4 closed

LAN IRQ SELECTION

IRQ

JP34

 

None

Open

IRQ5

Pins 1 & 2 closed

 

IRQ9

Pins 3 & 4 closed

 

IRQ10

Pins 5 & 6 closed

 

IRQ11

Pins 7 & 8 closed

LAN I/O ADDRESS SELECTION

Setting

JP33

300H

Pins 1 & 2, 3 & 4 closed

 

320H

Pins 3 & 4 closed

 

340H

Pins 1 & 2 closed

 

360H

Open