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A z80 emulator written in C99.

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I noticed that it does not seem to pass the ZEXALL tests for me, I haven't tried to run the built-in tests because I have my own tests reliant on...

In C, if you do an expression like ``` myvar = myfunc1() + myfunc2(); ``` the order of calling `myfunc1()` and `myfunc2()` is undefined by the standard. There is code...

based on "Compute parity in parallel" example on http://graphics.stanford.edu/~seander/bithacks.html

this was discovered running the core side-by-side with the cycle-stepped emulator of floooh (which is a lot slower). according to a comment here (line 80): https://github.com/anotherlin/z80emu/blob/1c418fa0d719abab9273131113defbe276101d95/README.txt zexall doesn't exercise the...