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Altera_Forum's avatar
Altera_Forum
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16 years ago

Controlling the setting of IO pad delays

I have a design which uses a PLL to create an internal copy of an external clock used to interface a processor to a Cyclone II. The aim is to optimise the transfers to and from the processor by ensur...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

Thanks for that, it's a great help. The device is a Cyclone II.

I have attached a graphic of the editor where I tried making the change, you can see it turns blue at the bottom of the table. I had thought that making changes via the various editors stored the info in the QSF but that doesn't seem to be the case here, after making this change, a "save" stores an ECO and causes the fitter to be run but there was no difference in the QSF after I closed Quartus. We have configuration control of the QSF and SDC files but if the ECO data is stored elsewhere, we would need to include the relevant file(s).