Millisecond Forums

No. A <port> can have multiple /items just like a <text> or <picture>.

The TTL signals will be different for groupings of 2 images in the 10 items.

The trial I have does:

<trial trigg>
/ stimulustimes = [0=trigg]
/ trialduration = 1700
/ validresponse = ("W")
/ correctresponse = ("W")
</trial>

So I would need to associate multiple <port> Since there would be 5 other ports sending different data.

(1) If the TTL signal is *always the same* as in your example, there is no need for any selection stuff at all. Simply have your <trial> "display" it along with the picture.

(2) Have you given http://www.millisecond.com/support/docs/v4/html/howto/howtopairs.htm a look? If so, it should be clear how to define the dependency between elements.

<item trigg>

there are 10 pics here

/1 = "Img/muffins.jpg" <-- example

</item>

<picture trigg>

/ items = trigg

</picture>

<port ptrigg>

/ port = lpt1

/ subport = data

/ items = ("00000001")

/ select = ?????

</port>

What needs to be where?

Unfortunately this example is meaningless without context. In general: Your <picture> elements comprise a number of /items. So do your <port> elements. You'll want to have the "item" (i.e. TTL signal) in the <port> depend on the item of the <picture>. Exactly that you'll find covered in the documentation topic I mentioned, only with <text> elements.

So if I were to do a
/ select = picture.trigg

What would be required for the first image?

Since <port> elements are essentially equivalent to all other stimulus elements such as <text> or <picture>, the "How to present stimulus pairs" topic in the documentation should answer your question.