To build a .COM file with the C/80 version of the Dr. Dobbs screen editor, first get all the source files (*.C and *.H). ED6.C contains the screen handling functions, and is currently set up for VT52 controls, with VT100 available as a #define option. Modify this for your system. Use the C compiler to create .ASM files for the following: EDSCREEN.C ED2.C ED3.C ED4.C ED5.C ED6.C ED7.C ED8.C ED9.C ED10.C Then use Software Toolworks' AS to assemble EDSCREEN and create a .COM file (the other .ASM files are automatically included).