hib1 Posted September 25, 2014 Report Share Posted September 25, 2014 I raised this question earlier but received no replies re: "Introducing the Spartan 3E FPGA andVHDL." Please tell me what is the difference is between the UCF notation with < > symbols vs. the notation with " " symbols? notation 1 is in book, but notation 2 is in some other sample code I received. Also, it appears that "IOSTANDARD=LVTTL" is not required. notation 1 from the book:NET LED_1 LOC = "Pxx" | IOSTANDARD=LVTTL;NET LED_0 LOC = "Pyy" | IOSTANDARD=LVTTL; notation 2:NET "LED<1>" LOC="Pxx" NET "LED<0>" LOC="Pyy" Quote Link to comment Share on other sites More sharing options...
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