My DE-115 Borad,download NEXT168 Fireware,install follow software, .MSDOS6.22 .Turbo C 2.0 Use TC20 and load BGIDEMO.c,Compile this file and run it in Graphic mode,first page some text display random code? I check the code when use gprintf(&x,&y,"XXXXXX...",xx,yy) ,appear this issue.
You will need the latest BIOS, as the one you have does not contain the required raster fonts. I will provide it with the next versions. Or you may use TrueType fonts, which do not need BIOS.