guy@sun.uucp (Guy Harris) (11/18/85)
The S3 and S5 manuals, and the S5 Interface Definition, tell you that the TCXONC terminal "ioctl" call can be used to suspend output and restart it. What they do *not* tell you is that it can also be used to suspend *input* and restart it - i.e., that they can be used to control the blocking and unblocking of input that the IXOFF mode (equivalent of TANDEM mode in V7/4.xBSD) enables. Add the following to the description of TCXONC: If "arg" is 2, suspend input; if 3, restart suspended input. Guy Harris