Intel MB820 User Manual

Page 19

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INSTALLATIONS

MB820 User’s Manual

15

CN4: Parallel Port Connector
CN4 is a DB-25 external connector situated on top of the VGA and serial
ports. The following table describes the pin-out assignments of this
connector.

CN4 Parallel Port

Signal Name

Pin #

Pin #

Signal Name

Line printer strobe

1

14

AutoFeed

PD0, parallel data 0

2

15

Error

PD1, parallel data 1

3

16

Initialize

PD2, parallel data 2

4

17

Select

PD3, parallel data 3

5

18

Ground

PD4, parallel data 4

6

19

Ground

PD5, parallel data 5

7

20

Ground

PD6, parallel data 6

8

21

Ground

PD7, parallel data 7

9

22

Ground

ACK, acknowledge

10

23

Ground

Busy

11

24

Ground

Paper empty

12

25

Ground

Select

13

N/A

N/A


CN6: VGA CRT Connector
CN6 is a DB-15 VGA connector located beside the COM1 port. The
following table shows the pin-out assignments of this connector.

Signal Name

Pin #

Pin # Signal Name

Red

1

2

Green

Blue

3

4

N.C.

GND

5

6

GND

GND

7

8

GND

N.C.

9

10

GND

N.C.

11

12

N.C.

HSYNC

13

14

VSYNC



NC

15

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