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I am working on a team that is doing both driver software and FPGA development. The FPGA simulation is being done in Modelsim and driver software is written in C. Proekt shkola moej mechti na anglijskom prezentaciya. To minimize integration risk, I would love to be able to model the interaction between the two halves of our product before putting it on hardware. I know Modelsim supports a testbench which lets you provide stimulus in the form of a text file with times and values to input. I'm wondering if Modelsim has a mode which allows you to hook up a pipe to an external application (such as our driver), and run a sort of distributed simulation where the software can push values into the testbench, then observe the results later. The trick that I cannot do with a text file input is have the two halves of the product interact. I need to have the software 'write' values into the FPGA simulator, read the results, and then write new values into the FPGA which are dependent on the results it read.

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Text files require the inputs to be independent from the output. I've done searches on both StackExchange and google, but I have not been able to come up with a set of keywords to narrow my search enough to either identify the behavior I am looking for, or determine that it does not exist. Abstract: In this thesis, we present a method of controlling a ModelSim simulation via an external program. Communication between ModelSim and the external program is accomplished by using Named Pipes ('FIFOs'), which appear as normal files to each application. The main difference between using FIFOs versus normal files for Inter-Process Communication (IPC) is that an application attempting to write to a FIFO is paused until another application attempts to read from the FIFO and vice-versa.

This improves reliability of the IPC. You might want to look at. It's a Python based co-simulation library, one of the design goals was to enable the methodology you describe, easily simulating un-modified production software and RTL. There's an example in the repository of running unmodified ping command against a simulation and a walking through the code. For user-space drivers, configuration utilities etc. You have a couple of options to run your software un-modified: • If your accesses to the device boil down to a few functions (e.g.