I was wrong, I looked at the source and forgot all the CP/M-inherited syscalls are supposed to lack an exit code. The MS-DOS 2 exit-with-return-call method work

I was wrong, I looked at the source and forgot all the CP/M-inherited syscalls are supposed to lack an exit code. The MS-DOS 2 exit-with-return-call method works, and it looks like WSL2 can propagate that from its' Linux VM into Win32-land. C:\Users\andrew\emu2>bash -c "ndisasm x.com" 00000000 B8214C mov ax,0x4c21 00000003 CD21 int 0x21 C:\Users\andrew\emu2>bash -c "./emu2 ./x.com" C:\Users\andrew\emu2>echo %ERRORLEVEL% 33