20 lines
844 B
Markdown
20 lines
844 B
Markdown
---
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categories:
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- Computer Architecture
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- Hardware
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tags: [HDL, nand-to-tetris]
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---
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# Hardware simulation
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In order to test our [HDL](/Computer_Architecture/Hardware_Description_Language.md) files we load them into the hardware simulator program shown below:
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There are several simulation options:
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- interactive
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- script-based (where we load a test script into the simulator along with the HDL file
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- comparative (running the HDL program against our intended output specified in the `.out` file)
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The image below shows a basic interactive usage of the simulator. We have uploaded the `Xor.hdl` file into the simulator and changed the input pins to `a=1, b=0` and clicked the calculator icon. This then shows the output and internal pin values for these inputs.
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<img src="/home/thomas/repos/computer_science/_img/hardware-sim-basic.png" >
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