MyHDL: a Python-Based Hardware Description Language
MyHDL supports waveform viewing, a popular way to visualize hardware behavior. In Listing 2, the instantiation of the SPI slave module is wrapped in a call to the function traceSignals. As a side effect, signal changes are dumped to a file during simulation, in a standard format. Figure 1 shows a sample of the waveforms rendered by gtkwave, an open-source waveform viewer.
MyHDL is a practical solution with links to other HDLs. MyHDL supports co-simulation with other HDL simulators that have an interface to the operating system. A bridge must be implemented for each simulator. This has been done for the open-source Verilog simulators Icarus and cver.
In addition, an implementation-oriented subset of MyHDL code can be converted automatically into Verilog. This is done with a function called toVerilog, which is used in the same way as the traceSignals function described earlier. The resulting code can be used in a standard design flow, for example, to synthesize it automatically into an implementation.
Tim Peters, a famous Python guru, explains his love for Python with the paradoxical statement, “Python code is easy to throw away.” In the same spirit, MyHDL aims to be the hardware design tool of choice to experiment with new ideas.
Resources for this article: /article/7749.
Jan Decaluwe has been an ASIC design engineer and entrepreneur for 18 years. Currently, he is an electronic design and automation consultant. He can be reached at firstname.lastname@example.org.
- Readers' Choice Awards 2013
- Mars Needs Women
- RSS Feeds
- Sublime Text: One Editor to Rule Them All?
- Raspberry Pi: the Perfect Home Server
- December 2013 Issue of Linux Journal: Readers' Choice
- IBM Will Minimize Impact of Future Disasters
- Tech Tip: Really Simple HTTP Server with Python
- Linux Systems Administrator
- Senior Perl Developer
37 min 1 sec ago
- This should be very helpful
1 hour 50 min ago
- As much as I share your point
4 hours 10 min ago
- So girls had it better ?
7 hours 42 min ago
- Reply to comment | Linux Journal
8 hours 2 min ago
- why is GNOME 3 in the fifth position at 14.1 %?
13 hours 34 min ago
- Sublime Is Brilliant!
18 hours 37 min ago
18 hours 57 min ago
- Rapid[Disk,Cache] better than native ram caching?
19 hours 21 min ago
- Nothing is perfect
19 hours 35 min ago