Owner`s manual

Page A-8 Appendix A
Workstation Connection Cables
RS-232 pin assignments for connecting an IBM PC-compatible Workstation to the Alpha
Micro computer are listed below.
Pinouts for Workstation-to-Computer Cable
IBM PC/AT and Compatibles
Workstation
Serial I/O Port
Computer End
DB-9 Connector
SIGNAL PIN# DIRECTION PIN# SIGNAL
TXD 3 -----> 2 RXD
CTS 8 <----- 5 RTS
DSR 6 <--
DCD 1 <--
RXD 2 <----- 3 TXD
RTS 7 -----> 4 CTS
GND 5 <----> 7 GND
NOTE: Pins 1, 6 and 8 on the workstation connector are jumpered together.
IBM PC/XT and Compatibles
Workstation
Serial I/O Port
Computer End
DB-9 Connector
SIGNAL PIN# DIRECTION PIN# SIGNAL
TXD 2 -----> 2 RXD
CTS 5 <----- 5 RTS
DSR 6 <--
DCD 8 <--
RXD 3 <----- 3 TXD
RTS 4 -----> 4 CTS
GND 7 <----> 7 GND
NOTE: Pins 5, 6 and 8 on the workstation connector are jumpered together.
Eagle Series Computer Owner’s Manual, Rev. 03