The standard approach is to use the select module. However, this doesn’t work on Windows. For that, you can use the msvcrt module’s keyboard polling. Often, this is done with multiple threads — one per device being “watched” plus the background processes that might need to be interrupted by the device.
The code you mention is IMO poorly coded and commented. That code does not conform to POSIX practices for portability as described in Setting Terminal Modes Properly and Serial Programming Guide for POSIX Operating Systems. That code does not mention that it uses non-canonical (aka raw) mode, and reuses the “blocking” and “nonblocking” terminology to … Read more
As already stated, you can use sigaction to trap ctrl-c, or select to trap any standard input. Note however that with the latter method you also need to set the TTY so that it’s in character-at-a-time rather than line-at-a-time mode. The latter is the default – if you type in a line of text it … Read more
fcntl, select, asyncproc won’t help in this case. A reliable way to read a stream without blocking regardless of operating system is to use Queue.get_nowait(): import sys from subprocess import PIPE, Popen from threading import Thread try: from queue import Queue, Empty except ImportError: from Queue import Queue, Empty # python 2.x ON_POSIX = ‘posix’ … Read more
module TB; reg ***[2:0]*** a, b, c; initial begin a = 3; b = 4; $display (“a = %d, b = %d, c=%d\n”, a, b, c); c <= a + b; $display (“a = %d, b = %d, c=%d\n”, a, b, c); a <= 10; b <= 2; c = a + b; $display (“a … Read more