------- My recent posting of LPTx, a PC-DOS program which showed examples of how to call DOS from within an interrupt handler failed to mention that you must run exe2bin on the .exe file to make it a .com file before you try to load it. -- Mark C. DiVecchio K3FWT [ihnp4|akgua|decvax|dcdwest|ucbvax]sdcsvax!sdencore!mark