0003 *KEY 1 NEW | | M AUTO | | M
A similar command is *APPEND, which allows you to add new text onto the
end of an existing file. It is used in precisely the same way as *BUILD, but the
named file must already exist, otherwise a 'Not found' error is generated.
Miscellaneous commands
The MOS provides several further commands which are best described as
'utilities'; they are *DUMP, *CREATE, *CLOSE and *HELP.
*DUMP is followed by a filename and produces a listing of the bytes in the file
displayed in hexadecimal and ASCII. If the file is of any length this information
will roll off the top of the screen unless restrained by pressing + .
You can use to stop the listing altogether, e.g.:
*DUMP Rubbish
*CREATE will create an empty file of specified length. Its uses are rather
limited, but it is employed thus:
*CREATE Mess 1000
creating a file called 'Mess', &1000 bytes in length.
*CLOSE causes the MOS to close all files which have been opened under the
current filing system. The command is usually only used at the end of a
program or programming session, or when the 'Already open' error message is
generated.
Finally, *HELP produces information about the commands implemented by
various pieces of software in your computer. For example:
*HELP ADFS
will generate a list of the commands the ADFS understands and their syntax,
whilst:
*HELP
will generate a similar list for all of the ROM software in the computer. So you
won't need to have this manual in front of you forever.
F 23