Testing a compiler that can’t even print

blog.danieljanus.pl

14 pointsnathell2 comments

But there’s another problem: these results are printed within DOSBox. In the emulated DOS machine. I needed a way to transfer them back to the host.

When bootstrapping any reasonably-powerful embedded system, the UART is normally one of the first devices to have a driver written for it. On a PC, emulated or otherwise, it's also pretty trivial to initialise and use one: https://wiki.osdev.org/Serial_Ports

Agreed, but this was surprisingly painful to achieve do on my raspberry 3.

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