HP C30 - IBM PC;XT to Printer; IBM PC;AT to Printer

Host Interface Reference
June 1999 Wiring Diagrams and Electrical Data 6-25
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.
IBM PC/AT to Printer
Normally, the IBM AT comes with a 9-pin serial connector.
Table 6-5. IBM PC/XT to Printer Connector Wiring
PC/XT
Signal DTE DTE
Printer
Signal
------- 1 1 FG
TD 2 2 TD
RD 3 3 RD
RTS 4 4 RTS
CTS 5 5 CTS
DSR 6 6 DSR
SG 7 7 SG
DCD 8 8 DCD
DTR 20 20 DTR
Table 6-6. IBM PC/AT to Printer Connector Wiring
PC/AT
Signal DCE DTE
Printer
Signal
DCD 1 1 FG
RD 2 2 TD
TD 3 3 RD
DTR 4 4 RTS
SG 5 5 CTS
DSR 6 6 ------
RTS 7 7 SG
CTS 8 8 DCD
RI 9 20 DTR