TeeEmCee - 2023-10-08

Sorry for the slow reply.

I looked around and apparently the last time the xbox port was working was 2005. It's been broken since 2007 at least. Note that port is for the original Xbox! If you want to compile for a modern Xbox I think that would be a new port of FB to UWP with nothing in common with the old one. I'd like to do such a port but don't have time and have never owned an XBox anyway.

To answer your question (not that it helps at all unless you switch to a FB version from 2005), bin\xbox\as.exe is apparently part of the OpenXDK toolchain which you have to install separately. See https://www.freebasic.net/forum/viewtopic.php?p=118742#p118742