vtopte|vtopte
vtophys|vtophys
vt100_initchartables|vt100_initchartables
vt100_setnrc|vt100_setnrc
vtruncbuf|vtruncbuf
vtype2dt|vtype2dt
vtw_add|vtw_add
vtw_del|vtw_del
vtw_earlyinit|vtw_earlyinit
vtw_restart|vtw_restart