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plotter simulation with NI4882

Hello,

 

i am trying to simulate a plotter with an c++ application, using the NationalInstruments::NI4882 namespace (Board Class). I want to read the hpgl data and save it to a text file.

With the most devices it works fine, but some HP analyzer are sending the "OS" command before sending the hpgl data. Now my application has to answer on

this command, but i am not sure what i have to answer?!

 

The next problem is, i pass the bus control to the device, after that the device is sending the "OS" comman. But i cannot answer to this command, because the

device is the cic (controller in charge) at this moment. How can i get CIC to answer to the "OS" command?

 

 

 

 

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