How to Combine Wires Output of Splitter Bits in Logism

When working with Logism, a popular FPGA development platform, you might find yourself needing to combine the outputs of a splitter bit. This process is essential for various applications, such as signal routing and data processing. In this article, I will guide you through the steps to combine wires output of splitter bits in Logism, ensuring a seamless integration into your project.

Understanding Splitter Bits

Before diving into the combination process, it’s crucial to understand what a splitter bit is. A splitter bit is a digital logic component that takes a single input and produces multiple outputs. In Logism, you can create a splitter bit using the `split` function. This function allows you to specify the number of outputs you want, and it returns an array of wires representing those outputs.

For example, if you want to create a 4-way splitter bit, you can use the following code:

splitter = split(4, input_wire);

In this code, `input_wire` is the wire that will be split into four outputs. The `split` function returns an array of four wires, each representing one of the outputs.

Combining Splitter Bit Outputs

Now that you have a splitter bit with multiple outputs, you might want to combine them for further processing. There are several methods to achieve this, depending on your specific requirements. Let’s explore some of the most common techniques.

Using a Wire

The simplest way to combine the outputs of a splitter bit is to use a single wire. This method is suitable when you want to route the combined signal to another component or for further processing.

To combine the outputs using a wire, you can use the following code:

combined_wire = cat(splitter[0], splitter[1], splitter[2], splitter[3]);

In this code, `cat` is a function that concatenates the wires in the specified order. The `combined_wire` will now hold the combined signal from the four outputs of the splitter bit.

Using a Buffer

In some cases, you might want to buffer the combined signal before using it. This can be useful when dealing with high-frequency signals or when you need to ensure a stable output.

To combine the outputs using a buffer, you can use the following code:

buffered_combined_wire = buffer(combined_wire);

In this code, `buffer` is a function that adds a buffer stage to the wire. The `buffered_combined_wire` will now hold the buffered combined signal from the four outputs of the splitter bit.

Using a Multiplexer

Another method to combine the outputs of a splitter bit is to use a multiplexer. This approach is suitable when you want to select one of the outputs based on a control signal.

To combine the outputs using a multiplexer, you can use the following code:

control_signal = [0, 1, 2, 3]; // Control signal for selecting the outputmultiplexer_output = mux(control_signal, [splitter[0], splitter[1], splitter[2], splitter[3]]);

In this code, `mux` is a function that implements a multiplexer. The `control_signal` determines which output will be selected, and the `multiplexer_output` will hold the selected output.

Conclusion

Combining the outputs of a splitter bit in Logism is a straightforward process that can be achieved using various techniques. By understanding the different methods and their applications, you can choose the most suitable approach for your project. Whether you need to route the combined signal, buffer it, or select a specific output, Logism provides the necessary tools to accomplish your goals.

Remember to experiment with different methods and explore the capabilities of Logism to find the best solution for your specific requirements. Happy designing!