Hey, i'm working on a hobby operating system called FutureOS. The name is because it'll only get finished in the future, as in, never complete. The goals are to have a FAT12 or FAT32 filesystem, basic sound support, and TCP networking by then end of 2016. The operating system currently runs in 16 bit real mode on the x86 architecture but there will be a way to enter 32 bit protected mode later in development. If you want to contribute to the github repo, you can find it here: https://github.com/Penot1/FutureOS
Right now, there are two commands, "echo" and "loadb". echo prints whatever parameter it is given and loadb loads the second floppy disk into memory. Feel free to submit pull requests, and if you have any questions either send me an email or put them in this thread.