Use BIOS ram hacks to make a SSH server out of any INT 10 13h app (MS-DOS is one of those)

You can find a demo Youtube Video here below:

• Get a DOS compatible floppy disk image (e.g. from here: http://www.allbootdisks.com/download/dos.html)
• Install golang and qemu, e.g. sudo apt-get install qemu golang
• Compile dos_ssh: go get; go build
• Start qemu with this image: qemu-system-i386 -fda Dos6.22.img -boot a -vnc :0 -s
• Run dos_ssh: ./dos_ssh
• Connect to ssh server: ssh localhost -p 2222