Macintosh DTE VAX DTE
signal dir- Mini Circular 8 DB-25 signal dir-
ection ection
HSKo out 1 6 DSR in
(DTR) 20 DTR in
HSKi in 2 8 DCD out
(CTS) 5 CTS out
TxD- out 3 3 RxD in
Gnd 4 1 Gnd
8 7
RxD- in 5 2 TxD out
6 no connection
7 no connection
Connect pins:
1. Macintosh side of cable: 4 and 8
2. VAX side of cable:
a. 6 and 20
b. 8 and 5
c. 1 and 7
The pins on the plug of the circular 8 connector are numbered as shown in Figure 1:
Figure 1: DIN-8 pin assignments.