Carl, Well, this may be interesting. I edited startup.int for 90 columns, not 100 and 43 lines: BX D ’w=90, sl=43Q2 ;*; With stock DOSBox-X and my own build, if I run config -set cols=90 config -set lins=43 and then start XyWrite, the window is chaotic. BUT if I run the 90x43 command that I’ve added to my build, then XyWrite runs perfectly. My build depends on a custom video mode that I created, and possibly XyWrite is aware of the underlying video mode, and thus gets it right. I can’t figure out why the config -set method works correctly in your setup but not in mine. Possibly our DOSBox-X configurations are different. Could you possibly try running DOSBox-X with no configuration file at all, and then enter config -set output=ttf and the two commands for setting cols and lins, and let me know whether you get the same result I do?