This LBR has been upgraded from 1.10 to 1.11 -- if you already have MEX11.LBR, the only file you'll need to upgrade is MEX111.COM (and possibly this DOC file). MEX 1.11 fixes the following problems: 1) Baud-rate code is now properly passed to the overlay 2) MEX now agrees with MEXPAT11.ASM 3) A local stack is loaded before any other initialization is performed (some users reported the CCP blew up after exiting MEX; this should no longer happen). 4) I/O vector setup preceeds any initialization. Thus, overlay initialization routines may freely use the MEX I/O routines. Ron Fowler Fort Atkinson, WI August 28, 1984