How to use DMDX
If you aren't using the Auto mode shortcut
you will have to use TimeDX version 5 to
establish operating parameters and store
them in the registry. Otherwise DMDX can be run immediately. This is what it's main screen
looks like under Windows 8:
DMDX's primary dialog presents you with the name of the
file to be run and a browse button to change it. Usually an item file,
it's resources (graphics and sound files) and the
data files generated are all found in
It also has Diagnostic
check box that enables the standard DMastr debug mode where each item is
displayed and the item number is then recorded for a response time instead of
actually gathering a response from the subject. By default no branches are taken when the Diagnostic button is checked unless the
Diagnostic Branching check box is set. This is because when branching
was first implemented it was for repeating sections of items till some
criteria was met by the subject (ie branches were based on the RT) and in
diagnostic mode like as not the item file would continue looping forever as
the RTs were static (being based on the item number). Nowadays it's used
(by me anyway) as a control structure where branches are made based on the
contents of counters or
macros and diagnostic mode has
no use unless those branches are taken.
Subject ID field is an optional subject ID, if DTP data files are being used
then the first character of this is included in the binary data file, if
AZK or ZIL files are used then the whole string is included in the
file. The subject ID is also available in item files with
The "Ignore unknown RTF" check box is to override error messages resulting
from unusual file formats, see Item Files.
The Unicode check box
turns on the
Unicode code path.
To run the item file click the Run button, press ESC when
the item file is finished to save the data. To exit DMDX click Exit, to use
another dialog just select it from the menu (the current DMDX and TimeDX dialogs
don't need to be exited manually). To perform a syntax check (analogous to
ICHECK) click the Syntax Check button (the screen shot is of a syntax check).
The syntax check will not display items as they are processed, nor will
it perform any branching -- it will parse the entire file and check for the
existence and integrity of any bitmaps or wave files (inc. cursor names)
that are used, it even checks that the destinations of branches exist too.
To access the VOX dialog to set the threshold for the DigitalVOX device
use File / "Test Vox".
Note that the dialog can appear narrower if
your monitor is not wide enough.