Sorry for the delay --- that looks great. Thanks very much.
There is, BTW, a simple DOS emulator which I use in a different project for running MSDOS compiler tests: https://github.com/dmsc/emu2 The ACK test framework is kind of a mess and is focused around testing the code generator rather than the syscall library, so it's probably not worth it here as there are already pc86 tests, but it's an option if there's anything you want to test.
Sorry for the delay --- that looks great. Thanks very much.
There is, BTW, a simple DOS emulator which I use in a different project for running MSDOS compiler tests: https://github.com/dmsc/emu2 The ACK test framework is kind of a mess and is focused around testing the code generator rather than the syscall library, so it's probably not worth it here as there are already pc86 tests, but it's an option if there's anything you want to test.