Printer Port LPT1 (Parallel Port)

LPT1 Pin Assignments

1

Strobe

10

Acknowledge

2

Data Bit 0

11

Busy

3

Data Bit 1

12

Paper End

4

Data Bit 2

13

Select Out

5

Data Bit 3

14

Auto Feed XT

6

Data Bit 4

15

Error

7

Data Bit 5

16

Initialize Printer

8

Data Bit 6

17

Select In (From Printer)

9

Data Bit 7

18 to 25

Ground

Floppy Disk Drive Interface

The 3.5 inch floppy disk drive interface is factory set to Drive A. Connection is via a 37-pin female D-type connector mounted on the side of the Touch Display unit.

Disk Drive Interface Pin Assignments

1 to 18

Ground

 

 

 

 

19

+5 VDC.

 

 

 

 

20

RWC/RPM

RPM Low

 

 

 

21

No connection

 

 

 

 

22

No connection

 

 

 

 

23

IDX

Index

 

 

 

24

MO1

Motor Enable 1

 

 

 

25

DS0

Drive Select 0

 

 

 

26

DS1

Drive Select 1

 

 

 

27

MO0

Motor Enable 0

 

 

 

28

DIR

Direction

 

 

 

29

STEP

Step Pulse

 

 

 

30

WD

Write Data (to

 

 

floppy)

 

 

 

31

WE

Write Enable

 

 

 

32

TR0

Track 0

 

 

 

33

WRPRT

Write Protected

 

 

 

34

RDD

Read Data (from

 

 

floppy disk)

 

 

 

35

HS

Head Select

 

 

 

36

DCHNG

Disk Change

 

 

 

37

Vcc

+5 V

 

 

 

GFK-1425B

Touch Display Products: IC752CTD400/450

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GE IC752CTD400, 450 manual Printer Port LPT1 Parallel Port, Floppy Disk Drive Interface, LPT1 Pin Assignments