This patch should be extremely useful for russian users because there are three different russian charsets: CP866 under DOS, CP1251 under Windows and KOI8-r under Unix.

My patch allows to select font from command line (-font8x16 file.fnt) or from config file ([bios] font8x16=file.fnt).

Contents of font file is directly placed over default font in Video-BIOS image on startup before opening DOS session window.

After applying patch, you should run autogen.sh in dosbox directory for rebuilding Makefile.in, config.h.in and configure.in from patched templates.