Forum Discussion
Occasional ContributorCyclone 10 GX device issue
Super ContributorWhy do you need to do this? Are you saying you can't go back and alter the design? And why do you think you can't make an ECO change? Cyclone 10 GX doesn't prevent this as far as I know.
Occasional ContributorHi sstrell,
1. I posted one thread for ECO issue of C10GX devices, https://community.intel.com/t5/Intel-Quartus-Prime-Software/Does-QPP-Quartus-Prime-Pro-hide-or-disable-engineering-change/m-p/1593364#M82725
I thought I have got the answer, C10GX doesn't support ECO any more, as follow image shows. The ECO function is disabled for C10GX devcies.
If you have oppsite answer, please let me know and prove it for me. I'll appreciate for this.
2. Why do i need to do this? I just want to use ECO funtion on C10GX deives. It's that simple.
- FvMHi,
I think the thread title is misleading. You are specifically asking about ECO operation in QPP resource property editor. If I understand the ECO chapter in QPP User Guide, Design Optimization correct, ECO is performed through TCL commands, in so far operation is different from QPS. If the specific operation you are trying is feasible or not, I can't say. There might be other limitations.
Generally, it's substantiated to ask what you are trying to achieve. Changing a LUT input can change delay. But I'd expect that Quartus fitter selects the best available connection according to timing constraints in effect.- MinzhiWang
Hi FvM,
Yeah, I want to ask question about ECOs. However, our target chip is Cyclone 10 GX. I alsways use ECOs function thru Chip Planner, which is feasible for me. So as my above image shown that Cyclone 10 GX serial can't support ECOs function any more. I got another information from QPS datasheet: Editing Mode in Chip Planner. The ECO editing mode for Cyclone 10 GX is closed.
According to your words, I went to check QPS datasheet, and found ECOs description about TCL script. But I also got one note message that:
Above "Note" message indicates that QPP only provide ECOs for Stratix 10 and Agilex 7 devices only.
So my question is does Cyclone 10 GX 100% not support ECOs function? Can't users use ECOs even thru TCL script channel?
I also give the "7.1. ECO Compliation Flow" section's detail as following image:
Then I went to my project, and didn't find the item "Perform ECO Compilation" from Start menu as above image. Which shows as following image, this proves again that Cyclone 10 GX doesn't support ECO fucntion.
BTW, my purpose to use ECOs, just as you said, to change LUT connections. We only want to edit several specitial LUTs connection. They are the most important nodes in our design. We want to keep them uniform. That's why we try to edit or change those LUTs connections. You know, the LUTs connections can vary in different compliation. You can't keep them uniform just with different compilations. Only ECOs can approach this object.
