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基于spartan3火龙刀系列FPGA开发板制作的音乐发生器实验例程

NET "sysclk"  LOC = "P80";

#NET "tonekey1<0>" LOC = "P87";
#NET "tonekey1<1>" LOC = "P90";
#NET "tonekey1<2>" LOC = "P93";
#NET "tonekey1<3>" LOC = "P94";
#NET "tonekey1<4>" LOC = "P95";

#NET "musickey1"   LOC = "P96";

NET "spkout0" LOC = "P162";
NET "spkout1" LOC = "P161";