The console (CON) is supposed to use Int 10H to display
characters, but actually it bypassed for speed. So new Int
10H handler will not take effect on CON while new Int 16H
will. This behavior will prevent applications from using
their new 10H to display far east DBCS characters
I think the compatibility is important than speed. This patch
restored the compatibility by using real INT10 service
instead of INT10 routines for CON outputting.