Bart Oldeman writes: > But DOS programs just write into the video ram directly, there is no > DOSEMU routine involved there, it's just a chunk of memory that DOSEMU > reads at intervals to update the screen. I see. Now I understand why I couldn't find a routine to hook in. > Perhaps you are looking for > src/env/video/text.c > static void draw_string(int x, int y, char *text, int len, Bit8u attr) This is exactly what I was looking for! Thank you so very much for your kind help. I could now make the desired screen output manipulation making my old dos editor to run with dosemu under Linux as if it were written for Linux. Again, thanks a lot. Ingo -- To unsubscribe from this list: send the line "unsubscribe linux-msdos" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html