OK, you are right, every time you generate a sopc file you get a new timestamp. After your reply I opened with a double click the processor design.
At the same time I opened the processor.ptf file. (PIC_before) I got two timestamps:
1246880377 - SOPC
1246873243 - PTF
I generated a new design, with a click on GENERATE. After then I opened once more with a simple double click the processor design and once more the processor.ptf file. (PIC_after) The two timestamps were:
1246880917 - SOPC
1246880377 - PTF
And that's not enought. One time more generation and compare: (PIC_after_after)
1246881421 - SOPC
1246880917 - PTF
After generation I get from the sopc builder a new timestamp and the old one is in my *.ptf file... :confused: