Entirely software, far above the Hardy Boys and Microkids in the stack. But the general pace and pressure of the story are still relatable.
I got the same vibes, by the way, from Season One of Halt and Catch Fire (recently and deservedly discussed here https://news.ycombinator.com/item?id=47056314).
I can't confirm it, but I think a few of the scenes from Halt and Catch Fire come from Soul of a New Machine.