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 RUNNING DOS COMMANDS

 Pressing Alt-J will let you jump to a DOS shell. You will see
 the DOS prompt and will be able execute any DOS command, for
 example 'dir'. If there is enough memory left, you can even
 run programs. To exit the DOS shell type 'exit' and press Re-
 turn. You will be back in Telix with the screen undisturbed
 from before your jump to the shell. In order to run the DOS
 shell, there must be enough memory left, and Telix must be
 able to find the file called COMMAND.COM. If either of these
 requirements is not met, Telix will tell you so. (The file
 COMMAND.COM is the DOS command interpreter. It is usually
 pointed to by the DOS environment variable COMSPEC. See your
 DOS manual for more information). If you run a serial port re-
 lated program in the shell, there is a good chance that it
 will re-initialize the com port and another piece of informa-
 tion called the com interrupt vector. If this happens, Telix
 will notice and re-initialize the port to the old values when
 you return from the shell.