Design no longer compiles. IEEE-1532 error

Thanks, my search found that. I fixed one of the warnings.

For the other warnings I tried using a DFF with enable but it made the design blow up. Negative set up times everywhere, simulation waveforms were buzzing.

http://www.alteraforum.com/forum/showthread.php?t=754 (http://www.alteraforum.com/forum/showthread.php?t=754)

Pasted by brad, it is about ripple clock.

May help.

I used the tutorial, and did Processing->Start->Start Analysis and Synthesis. then Start Fitter.

View->Timing Closure Floorplan shows pins assigned.

Design has ripple clock warnings. Keep working. 60/64 cells used, might have to use bigger device.

See new thread.

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How to make it automatically assign pins? Then go back and change them so the layout is easy?

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If the target device you select is"Specific device selected in'Avaliable devices' list then

you shoule assign pins

else

no need;

end if;

A Quartus_hand book may help, try it.

Good luck.

Ha! Changed some settings in the Device and Pin options, compile failed again. It gives the IEEE 1532 error if I select "In System Configuration File", but no error if I select "Serial Vector Format".

Isn't it fun watching a newbie stumble in the dark?

ok, copied my schematic to clipboard, then opened a new project and pasted the schematic into a new schematic file.

Compiles, running simulator. ok, design works, but click "View" then "Show Pin and Location Assignments", nothing happens, no pins are assigned.

How to make it automatically assign pins? Then go back and change them so the layout is easy? I think that's how I got messed up before.

I don't know if this is the cause, but I was trying to assign the clock.

When it was working, the assignment editor said I used 24 pins, now it says 25 pins are used, and two of them are clocks.