DAP Technology 1394, Operation Manual

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Generator
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data can be specified in the "Streams" generator page, where you can define isochronous sequences.
Sequences are indicated by blue rectangles on the time line of a slot. This can be seen in the picture
above.
An isochronous sequence is specified by a a start cycle number, the length in number of cycles, the
speed and contents of the isochronous packets to be sent during these cycles. During generation each
sequence will result in the generation of an isochronous packet for each isochronous cycle at which the
sequence is defined. The channel, speed and contents will correspond to the values specified for the slot
the sequence is placed in. If more than one slot is defined for some isochronous cycle, then the order of
isochronous cycles will depend on the specified priorities.
An isochronous sequence is placed in a 'slot'. In the example window above, a couple of slots are defined.
The names of the slots are listed on the left side of the window and their 'time' lines are drawn to the right
of their names. Before creating any sequences, at least one slot must be defined. To add a slot, open the
slot definitions by selecting it from the Generator menu or pressing the corresponding toolbutton.
To create an isochronous sequence, click on the 'time' line of the slot you would like to create a sequence
for. Initially, the sequence will occupy the complete slot. However, the left and right edges of the
sequence can be moved by dragging them with the mouse. By doing this, the sequence start and end
cycles can be changed.
Now you have defined the start cycle and length. Both start cycle and length can be changed at any time
as long as they do not overlap another sequence in the same slot.
To change the packet contents for the packets in a specific sequence, click on the sequence rectangle to
select it. The selection is indicated by a red surrounding. If a sequence is selected, the right side of the
generator window will represent the packet contents of the selected sequence. It is now possible to fill the
sequence with data from a template, file or manually.
Note that isochronous data only can be generated if cycle start packets are present on the bus.
10.1.2. Details
10.1.2.1. Menu
File
Open
With this command you can open an existing Analyzer generator file. By default these files have an
extension of .fsg.
Save
With this command you can save the current generator data as a Analyzer generator file. By default these
files have an extension of .fsg.
Generator data saved this way, can later be used again by invoking the 'Open' command of the 'File'
menu. If no file name was given before, a file dialog is displayed to enter the file name and path.
Save As
This commands does the same as the 'Save' command, except that it will always display the file dialog,
so that you can specify a file name and path.
Generator
Start
This command can be used to start the generator. If the Generator data has not yet been uploaded, a
dialog box will popup to confirm Generator data upload. If successful, the generator will start generating
the packets.
Stop
This command can be used to stop the generator. The generator data will remain in the Analyzer for an
optional next run.
Upload
Upload the current Generator definition to the Analyzer.