IBM PC/XT to Printer

Normally, the IBM PC/XT comes with a parallel interface for the printer with a 25-pin female connector. To run RS-232, you must install a serial board, which will have a male connector.

Table 6-5. IBM PC/XT to Printer Connector Wiring

PC/XT

Signal DTE

------- 1

TD 2

RD 3

RTS 4

CTS 5

DSR 6

SG 7

DCD 8

DTR 20

Printer

DTE Signal

1FG

2TD

3RD

4RTS

5CTS

6DSR

7SG

8DCD

20 DTR

IBM PC/AT to Printer

Normally, the IBM AT comes with a 9-pin serial connector.

Table 6-6. IBM PC/AT to Printer Connector Wiring

PC/AT

Signal DCE

DCD 1

RD 2

TD 3

DTR 4

SG 5

DSR 6

RTS 7

CTS 8

RI 9

Printer

DTE Signal

1FG

2TD

3RD

4RTS

5CTS

6------

7SG

8DCD

20 DTR

Wiring Diagrams and Electrical Data

6-25

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HP C30 manual IBM PC/XT to Printer, IBM PC/AT to Printer