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📄 freq_change_chk.vhd

📁 频率变化操作IP,希望有人喜欢!自己写的,需要的下把!
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								reg_dec(31 downto 28) <= sourse1(31 downto 28) + "1010" - sourse2(31 downto 28); 
								reg_dec(35 downto 32) <= sourse1(35 downto 32) - '1' - sourse2(35 downto 32); 
							end if;
						else
							reg_dec(27 downto 24) <= sourse1(27 downto 24) - '1' + "1010" - sourse2(27 downto 24); 
							if sourse1(31 downto 28) - '1' >= sourse2(31 downto 28) then
								reg_dec(31 downto 28) <= sourse1(31 downto 28) - '1' - sourse2(31 downto 28); 
								reg_dec(35 downto 32) <= sourse1(35 downto 32) - sourse2(35 downto 32); 
							else
								reg_dec(31 downto 28) <= sourse1(31 downto 28)- '1' + "1010" - sourse2(31 downto 28); 
								reg_dec(35 downto 32) <= sourse1(35 downto 32) - '1' - sourse2(35 downto 32); 
							end if;
						end if;
					end if;
				else
					reg_dec(19 downto 16) <= sourse1(19 downto 16) - '1' + "1010" - sourse2(19 downto 16); 
					if sourse1(23 downto 20) - '1' >= sourse2(23 downto 20) then
						reg_dec(23 downto 20) <= sourse1(23 downto 20) - '1' - sourse2(23 downto 20); 
						if sourse1(27 downto 24) >= sourse2(27 downto 24) then
							reg_dec(27 downto 24) <= sourse1(27 downto 24) - sourse2(27 downto 24); 
							if sourse1(31 downto 28) >= sourse2(31 downto 28) then
								reg_dec(31 downto 28) <= sourse1(31 downto 28) - sourse2(31 downto 28); 
								reg_dec(35 downto 32) <= sourse1(35 downto 32) - sourse2(35 downto 32); 
							else
								reg_dec(31 downto 28) <= sourse1(31 downto 28) + "1010" - sourse2(31 downto 28); 
								reg_dec(35 downto 32) <= sourse1(35 downto 32) - '1' - sourse2(35 downto 32); 
							end if;
						else
							reg_dec(27 downto 24) <= sourse1(27 downto 24) + "1010" - sourse2(27 downto 24); 
							if sourse1(31 downto 28) - '1' >= sourse2(31 downto 28) then
								reg_dec(31 downto 28) <= sourse1(31 downto 28) - '1' - sourse2(31 downto 28); 
								reg_dec(35 downto 32) <= sourse1(35 downto 32) - sourse2(35 downto 32); 
							else
								reg_dec(31 downto 28) <= sourse1(31 downto 28)- '1' + "1010" - sourse2(31 downto 28); 
								reg_dec(35 downto 32) <= sourse1(35 downto 32) - '1' - sourse2(35 downto 32); 
							end if;
						end if;
					else
						reg_dec(23 downto 20) <= sourse1(23 downto 20) - '1' + "1010" - sourse2(23 downto 20); 
						if sourse1(27 downto 24) - '1' >= sourse2(27 downto 24) then
							reg_dec(27 downto 24) <= sourse1(27 downto 24) - '1' - sourse2(27 downto 24); 
							if sourse1(31 downto 28) >= sourse2(31 downto 28) then
								reg_dec(31 downto 28) <= sourse1(31 downto 28) - sourse2(31 downto 28); 
								reg_dec(35 downto 32) <= sourse1(35 downto 32) - sourse2(35 downto 32); 
							else
								reg_dec(31 downto 28) <= sourse1(31 downto 28) + "1010" - sourse2(31 downto 28); 
								reg_dec(35 downto 32) <= sourse1(35 downto 32) - '1' - sourse2(35 downto 32); 
							end if;
						else
							reg_dec(27 downto 24) <= sourse1(27 downto 24) - '1' + "1010" - sourse2(27 downto 24); 
							if sourse1(31 downto 28) - '1' >= sourse2(31 downto 28) then
								reg_dec(31 downto 28) <= sourse1(31 downto 28) - '1' - sourse2(31 downto 28); 
								reg_dec(35 downto 32) <= sourse1(35 downto 32) - sourse2(35 downto 32); 
							else
								reg_dec(31 downto 28) <= sourse1(31 downto 28)- '1' + "1010" - sourse2(31 downto 28); 
								reg_dec(35 downto 32) <= sourse1(35 downto 32) - '1' - sourse2(35 downto 32); 
							end if;
						end if;
					end if;
				end if;
			end if;
		end if;
	else
		reg_dec(7 downto 4) <= sourse1(7 downto 4) + "1010" - sourse2(7 downto 4);
		if sourse1(11 downto 8) - '1' >= sourse2(11 downto 8) then
			reg_dec(11 downto 8) <= sourse1(11 downto 8) - '1' - sourse2(11 downto 8); 
			if sourse1(15 downto 12) >= sourse2(15 downto 12) then
				reg_dec(15 downto 12) <= sourse1(15 downto 12) - sourse2(15 downto 12); 
				if sourse1(19 downto 16) >= sourse2(19 downto 16) then
					reg_dec(19 downto 16) <= sourse1(19 downto 16) - sourse2(19 downto 16); 
					if sourse1(23 downto 20) >= sourse2(23 downto 20) then
						reg_dec(23 downto 20) <= sourse1(23 downto 20) - sourse2(23 downto 20); 
						if sourse1(27 downto 24) >= sourse2(27 downto 24) then
							reg_dec(27 downto 24) <= sourse1(27 downto 24) - sourse2(27 downto 24); 
							if sourse1(31 downto 28) >= sourse2(31 downto 28) then
								reg_dec(31 downto 28) <= sourse1(31 downto 28) - sourse2(31 downto 28); 
								reg_dec(35 downto 32) <= sourse1(35 downto 32) - sourse2(35 downto 32); 
							else
								reg_dec(31 downto 28) <= sourse1(31 downto 28) + "1010" - sourse2(31 downto 28); 
								reg_dec(35 downto 32) <= sourse1(35 downto 32) - '1' - sourse2(35 downto 32); 
							end if;
						else
							reg_dec(27 downto 24) <= sourse1(27 downto 24) + "1010" - sourse2(27 downto 24); 
							if sourse1(31 downto 28) - '1' >= sourse2(31 downto 28) then
								reg_dec(31 downto 28) <= sourse1(31 downto 28) - '1' - sourse2(31 downto 28); 
								reg_dec(35 downto 32) <= sourse1(35 downto 32) - sourse2(35 downto 32); 
							else
								reg_dec(31 downto 28) <= sourse1(31 downto 28)- '1' + "1010" - sourse2(31 downto 28); 
								reg_dec(35 downto 32) <= sourse1(35 downto 32) - '1' - sourse2(35 downto 32); 
							end if;
						end if;
					else
						reg_dec(23 downto 20) <= sourse1(23 downto 20) + "1010" - sourse2(23 downto 20); 
						if sourse1(27 downto 24) - '1' >= sourse2(27 downto 24) then
							reg_dec(27 downto 24) <= sourse1(27 downto 24) - '1' - sourse2(27 downto 24); 
							if sourse1(31 downto 28) >= sourse2(31 downto 28) then
								reg_dec(31 downto 28) <= sourse1(31 downto 28) - sourse2(31 downto 28); 
								reg_dec(35 downto 32) <= sourse1(35 downto 32) - sourse2(35 downto 32); 
							else
								reg_dec(31 downto 28) <= sourse1(31 downto 28) + "1010" - sourse2(31 downto 28); 
								reg_dec(35 downto 32) <= sourse1(35 downto 32) - '1' - sourse2(35 downto 32); 
							end if;
						else
							reg_dec(27 downto 24) <= sourse1(27 downto 24) - '1' + "1010" - sourse2(27 downto 24); 
							if sourse1(31 downto 28) - '1' >= sourse2(31 downto 28) then
								reg_dec(31 downto 28) <= sourse1(31 downto 28) - '1' - sourse2(31 downto 28); 
								reg_dec(35 downto 32) <= sourse1(35 downto 32) - sourse2(35 downto 32); 
							else
								reg_dec(31 downto 28) <= sourse1(31 downto 28)- '1' + "1010" - sourse2(31 downto 28); 
								reg_dec(35 downto 32) <= sourse1(35 downto 32) - '1' - sourse2(35 downto 32); 
							end if;
						end if;
					end if;
				else
					reg_dec(19 downto 16) <= sourse1(19 downto 16) + "1010" - sourse2(19 downto 16); 
					if sourse1(23 downto 20) - '1' >= sourse2(23 downto 20) then
						reg_dec(23 downto 20) <= sourse1(23 downto 20) - '1' - sourse2(23 downto 20); 
						if sourse1(27 downto 24) >= sourse2(27 downto 24) then
							reg_dec(27 downto 24) <= sourse1(27 downto 24) - sourse2(27 downto 24); 
							if sourse1(31 downto 28) >= sourse2(31 downto 28) then
								reg_dec(31 downto 28) <= sourse1(31 downto 28) - sourse2(31 downto 28); 
								reg_dec(35 downto 32) <= sourse1(35 downto 32) - sourse2(35 downto 32); 
							else
								reg_dec(31 downto 28) <= sourse1(31 downto 28) + "1010" - sourse2(31 downto 28); 
								reg_dec(35 downto 32) <= sourse1(35 downto 32) - '1' - sourse2(35 downto 32); 
							end if;
						else
							reg_dec(27 downto 24) <= sourse1(27 downto 24) + "1010" - sourse2(27 downto 24); 
							if sourse1(31 downto 28) - '1' >= sourse2(31 downto 28) then
								reg_dec(31 downto 28) <= sourse1(31 downto 28) - '1' - sourse2(31 downto 28); 
								reg_dec(35 downto 32) <= sourse1(35 downto 32) - sourse2(35 downto 32); 
							else
								reg_dec(31 downto 28) <= sourse1(31 downto 28)- '1' + "1010" - sourse2(31 downto 28); 
								reg_dec(35 downto 32) <= sourse1(35 downto 32) - '1' - sourse2(35 downto 32); 
							end if;
						end if;
					else
						reg_dec(23 downto 20) <= sourse1(23 downto 20) - '1' + "1010" - sourse2(23 downto 20); 
						if sourse1(27 downto 24) - '1' >= sourse2(27 downto 24) then
							reg_dec(27 downto 24) <= sourse1(27 downto 24) - '1' - sourse2(27 downto 24); 
							if sourse1(31 downto 28) >= sourse2(31 downto 28) then
								reg_dec(31 downto 28) <= sourse1(31 downto 28) - sourse2(31 downto 28); 
								reg_dec(35 downto 32) <= sourse1(35 downto 32) - sourse2(35 downto 32); 
							else
								reg_dec(31 downto 28) <= sourse1(31 downto 28) + "1010" - sourse2(31 downto 28); 
								reg_dec(35 downto 32) <= sourse1(35 downto 32) - '1' - sourse2(35 downto 32); 
							end if;
						else
							reg_dec(27 downto 24) <= sourse1(27 downto 24) - '1' + "1010" - sourse2(27 downto 24); 
							if sourse1(31 downto 28) - '1' >= sourse2(31 downto 28) then
								reg_dec(31 downto 28) <= sourse1(31 downto 28) - '1' - sourse2(31 downto 28); 
								reg_dec(35 downto 32) <= sourse1(35 downto 32) - sourse2(35 downto 32); 
							else
								reg_dec(31 downto 28) <= sourse1(31 downto 28)- '1' + "1010" - sourse2(31 downto 28); 
								reg_dec(35 downto 32) <= sourse1(35 downto 32) - '1' - sourse2(35 downto 32); 
							end if;
						end if;
					end if;
				end if;
			else
				reg_dec(15 downto 12) <= sourse1(15 downto 12) + "1010" - sourse2(15 downto 12); 
				if sourse1(19 downto 16) - '1' >= sourse2(19 downto 16) then
					reg_dec(19 downto 16) <= sourse1(19 downto 16) - '1' - sourse2(19 downto 16); 
					if sourse1(23 downto 20) >= sourse2(23 downto 20) then
						reg_dec(23 downto 20) <= sourse1(23 downto 20) - sourse2(23 downto 20); 
						if sourse1(27 downto 24) >= sourse2(27 downto 24) then
							reg_dec(27 downto 24) <= sourse1(27 downto 24) - sourse2(27 downto 24); 
							if sourse1(31 downto 28) >= sourse2(31 downto 28) then
								reg_dec(31 downto 28) <= sourse1(31 downto 28) - sourse2(31 downto 28); 
								reg_dec(35 downto 32) <= sourse1(35 downto 32) - sourse2(35 downto 32); 
							else
								reg_dec(31 downto 28) <= sourse1(31 downto 28) + "1010" - sourse2(31 downto 28); 
								reg_dec(35 downto 32) <= sourse1(35 downto 32) - '1' - sourse2(35 downto 32); 
							end if;
						else
							reg_dec(27 downto 24) <= sourse1(27 downto 24) + "1010" - sourse2(27 downto 24); 
							if sourse1(31 downto 28) - '1' >= sourse2(31 downto 28) then
								reg_dec(31 downto 28) <= sourse1(31 downto 28) - '1' - sourse2(31 downto 28); 
								reg_dec(35 downto 32) <= sourse1(35 downto 32) - sourse2(35 downto 32); 
							else
								reg_dec(31 downto 28) <= sourse1(31 downto 28)- '1' + "1010" - sourse2(31 downto 28); 
								reg_dec(35 downto 32) <= sourse1(35 downto 32) - '1' - sourse2(35 downto 32); 
							end if;
						end if;
					else
						reg_dec(23 downto 20) <= sourse1(23 downto 20) + "1010" - sourse2(23 downto 20); 
						if sourse1(27 downto 24) - '1' >= sourse2(27 downto 24) then
							reg_dec(27 downto 24) <= sourse1(27 downto 24) - '1' - sourse2(27 downto 24); 
							if sourse1(31 downto 28) >= sourse2(31 downto 28) then
								reg_dec(31 downto 28) <= sourse1(31 downto 28) - sourse2(31 downto 28); 
								reg_dec(35 downto 32) <= sourse1(35 downto 32) - sourse2(35 downto 32); 
							else
								reg_dec(31 downto 28) <= sourse1(31 downto 28) + "1010" - sourse2(31 downto 28); 
								reg_dec(35 downto 32) <= sourse1(35 downto 32) - '1' - sourse2(35 downto 32); 
							end if;
						else
							reg_dec(27 downto 24) <= sourse1(27 downto 24) - '1' + "1010" - sourse2(27 downto 24); 
							if sourse1(31 downto 28) - '1' >= sourse2(31 downto 28) then
								reg_dec(31 downto 28) <= sourse1(31 downto 28) - '1' - sourse2(31 downto 28); 
								reg_dec(35 downto 32) <= sourse1(35 downto 32) - sourse2(35 downto 32); 
							else
								reg_dec(31 downto 28) <= sourse1(31 downto 28)- '1' + "1010" - sourse2(31 downto 28); 
								reg_dec(35 downto 32) <= sourse1(35 downto 32) - '1' - sourse2(35 downto 32); 
							end if;
						end if;
					end if;
				else
					reg_dec(19 downto 16) <= sourse1(19 downto 16) - '1' + "1010" - sourse2(19 downto 16); 
					if sourse1(23 downto 20) - '1' >= sourse2(23 downto 20) then
						reg_dec(23 downto 20) <= sourse1(23 downto 20) - '1' - sourse2(23 downto 20); 
						if sourse1(27 downto 24) >= sourse2(27 downto 24) then
							reg_dec(27 downto 24) <= sourse1(27 downto 24) - sourse2(27 downto 24); 
							if sourse1(31 downto 28) >= sourse2(31 downto 28) then
								reg_dec(31 downto 28) <= sourse1(31 downto 28) - sourse2(31 downto 28); 
								reg_dec(35 downto 32) <= sourse1(35 downto 32) - sourse2(35 downto 32); 
							else
								reg_dec(31 downto 28) <= sourse1(31 downto 28) + "1010" - sourse2(31 downto 28); 
								reg_dec(35 downto 32) <= sourse1(35 downto 32) - '1' - sourse2(35 downto 32); 
							end if;
						else
							reg_dec(27 downto 24) <= sourse1(27 downto 24) + "1010" - sourse2(27 downto 24); 
							if sourse1(31 downto 28) - '1' >= sourse2(31 downto 28) then
								reg_dec(31 downto 28) <= sourse1(31 downto 28) - '1' - sourse2(31 downto 28); 
								reg_dec(35 downto 32) <= sourse1(35 downto 32) - sourse2(35 downto 32); 
							else
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