| CAUSE 1: | You used the Open command (File menu) to open a Block Design File (.bdf) or Graphic Design File (.gdf), but the Quartus II software cannot open the file. This message can occur when the BDF or GDF is in an illegal or older format that cannot be read by the Quartus II software. |
| ACTION: | Click OK to close the message dialog box, and then make sure the BDF or GDF is in a legal format. |
| CAUSE 2: | You used the Open command (File menu) or the Open Symbol File command (right button pop-up menu) to open a Block Symbol File (.bsf), but the Quartus II software cannot open the file. This message can occur when you have edited the BSF outside the Quartus II software. |
| ACTION: | Click OK to close the message dialog box, and then re-create the BSF for the specified symbol. |
| CAUSE 3: | You used the Open Symbol File command (right button pop-up menu) to open a Block Symbol File (.bsf), but the Quartus II software cannot open the file. This message can occur when you have not created the BSF for the open Block Design File (.bdf), Verilog Design File (.v), VHDL Design File (.vhd), or Text Design File (.tdf). |
| ACTION: | Click OK to close the message dialog box, and then create the BSF for the specified symbol. |
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