-device usb-braille,chardev=braille -chardev braille,id=braille
-* -virtioconsole becomes
- -device virtio-serial-pci,class=C,vectors=V,ioeventfd=IOEVENTFD,max_ports=N
- -device virtconsole,is_console=NUM,nr=NR,name=NAME
-
LEGACY-CHARDEV translates to -chardev HOST-OPTS... as follows:
* null becomes -chardev null