Compiler, Assembler, Linker, Decoder, Debugger, Librarian, or Maker
DEFAULTDIR=<directory>
<directory>: Directory to be the default current directory
The default directory for all tools may be specified with this environment variable. Each of the tools indicated above will take the directory specified as its current directory instead of the one defined by the operating system or launching tool (e.g., editor).
DEFAULTDIR=C:\INSTALL\PROJECT
"All tools may store some global data into the mcutools.ini file.The tool first searches for this file in the directory of the tool itself (path of the executable tool). If there is no mcutools.ini file in this directory, the tool looks for an mcutools.ini file located in the MS Windows installation directory (e.g., C:\WINDOWS)."