Chapter 24, Zyxel modems and ataris, Cable – ZyXEL Communications 2864 User Manual
Page 231
24–1
Chapter 24
ZyXEL MODEMS AND ATARIS
All external models of the ZyXEL 2864 series may be connected to Atari comput-
ers. The factory settings should work just fine with your Atari computer.
Cable
The standard Atari ST, Mega ST and Falcon 030 models provide just a single serial
port, while the Mega STE and TT are equipped with 3 or 4 serial ports. Not all
ports provide all of the signals which are needed for truely reliable communication.
On the Atari ST, the port is a male 25-pin connector. On the other models, it is a
male 9-pin connector.
To connect an Atari to your modem, you need a 9-wire cable:
Atari
Signal
ZyXEL
ST
TT
STE/TT/
Falcon
STE/TT
STE/TT
25-pin
Serial 1
9-pin
Serial 2
9-pin
Modem1
9-pin
Modem2
9-pin
8
1
1
1
–
CD
8
3
2
2
2
2
RXD
3
2
3
3
3
3
TXD
2
20
4
4
4
4 (on)
DTR
20
7
5
5
5
5
Ground
7
6
6
6
–
–
DSR
6
4
7
7
7
7 (on)
RTS
4
5
8
8
8
–
CTS
5
22
–
9
9
–
RI
22
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
Fig. 24.1: Serial connectors of the Atari computers