timer.fit

利用一块芯片完成除时钟源、按键、扬声器和显示器（数码管）之外的所有数字电路功能。所有数字逻辑功能都在CPLD器件上用VHDL语言实现。这样设计具有体积小、设计周期短（设计过程中即可实现时序仿真）、调试

	LC8_B6  : LORAX2 = "LC1_A4, LC1_A1, LC3_A4, LC2_A1";
	LC6_B6  : LORAX2 = "LC8_B6, LC3_B1, LC2_B8, LC7_B6";
	LC3_B12 : LORAX2 = "X, X, LC1_A1, LC2_A1";
	LC7_B6  : LORAX2 = "LC3_B12, LC1_A4, LC3_A4, LC6_B6";
	LC3_B7  : LORAX2 = "LC1_A4, LC1_A1, LC2_A1, LC3_A4";
	LC6_B7  : LORAX2 = "LC3_B7, LC3_B1, LC2_B8, LC6_B7";
	LC7_B1  : LORAX2 = "LC1_A4, LC1_A1, LC2_A1, LC3_A4";
	LC6_B1  : LORAX2 = "LC7_B1, LC2_B1, LC2_B8, LC4_B1";
	LC4_B1  : LORAX2 = "LC3_B12, LC1_A4, LC3_A4, LC6_B1";
	LC5_B6  : LORAX2 = "X, LC1_B2, LC1_B4, LC1_B6";
	LC3_B6  : LORAX2 = "X, LC8_B6, LC3_B1, LC5_B6";
	LC1_B6  : LORAX2 = "LC3_B12, LC1_A4, LC3_A4, LC3_B6";
	LC1_B1  : LORAX2 = "LC1_A4, LC3_A4, LC1_B11, LC1_B12";
	LC5_B1  : LORAX2 = "LC7_B1, LC2_B1, LC1_B2, LC1_B1";
	LC1_B12 : LORAX2 = "LC3_B12, LC1_A4, LC3_A4, LC5_B1";
	LC2_B6  : LORAX2 = "X, LC1_B2, LC1_B4, LC7_A11";
	LC3_B1  : LORAX2 = "X, LC8_B1, LC2_B1, LC3_A4";
	LC4_B6  : LORAX2 = "X, LC8_B6, LC3_B1, LC2_B6";
	LC7_A11 : LORAX2 = "LC3_B12, LC1_A4, LC3_A4, LC4_B6";
	LC1_B7  : LORAX2 = "LC1_A4, LC1_A1, LC2_A1, LC3_A4";
	LC2_B7  : LORAX2 = "LC1_B7, LC1_B4, LC1_B2, LC5_A11";
	LC5_A11 : LORAX2 = "X, LC3_B12, LC1_A4, LC2_B7";
	LC1_A2  : LORAX2 = "OH8R0P16, X, X, X";
	LC1_A20 : LORAX2 = "OH10R0P17, X, X, X";
	LC4_C14 : LORAX2 = "OD0P84, X, X, X";
	LC3_C21 : LORAX2 = "OD1P2, X, X, X";
	LC2_C8  : LORAX2 = "X, X, LC5_C8, LC2_C8";
	LC6_C8  : LORAX2 = "LC6_C8, LC3_C8, LC1_C8, LC4_C8";
	LC1_C8  : LORAX2 = "LC1_C8, LC3_C8, LC5_C8, LC4_C8";
	LC3_C8  : LORAX2 = "X, LC3_C8, LC4_C8, LC5_C8";
	LC4_C8  : LORAX2 = "X, X, LC5_C8, LC4_C8";
	LC5_C8  : LORAX2 = "LC6_C8, LC3_C8, LC1_C8, LC4_C8";
	LC3_C4  : LORAX2 = "X, X, LC7_C4, LC6_C4";
	LC2_C4  : LORAX2 = "LC7_C4, LC5_C4, LC4_C4, LC6_C4";
	LC2_C7  : LORAX2 = "LC5_C7, LC4_C7, LC1_C4, LC2_C7";
	LC5_C7  : LORAX2 = "LC5_C7, LC2_C4, LC4_C7, LC1_C4";
	LC4_C7  : LORAX2 = "LC5_C7, LC2_C4, LC4_C7, LC1_C4";
	LC5_C4  : LORAX2 = "LC3_C4, LC3_C7, LC5_C4, LC4_C4";
	LC4_C4  : LORAX2 = "LC7_C4, LC3_C7, LC4_C4, LC6_C4";
	LC6_C4  : LORAX2 = "X, LC7_C4, LC3_C7, LC6_C4";
	LC7_C4  : LORAX2 = "X, X, LC7_C4, LC3_C7";
	LC3_C7  : LORAX2 = "X, LC5_C7, LC4_C7, LC1_C4";
	LC1_C4  : LORAX2 = "X, LC4_C4, LC6_C4, LC5_C4";
	LC2_C23 : LORAX2 = "X, X, LC6_C23, LC7_C23";
	LC1_C23 : LORAX2 = "LC6_C23, LC4_C23, LC5_C23, LC7_C23";
	LC1_C11 : LORAX2 = "LC2_C11, LC4_C11, LC3_C23, LC1_C11";
	LC2_C11 : LORAX2 = "LC2_C11, LC1_C23, LC4_C11, LC3_C23";
	LC4_C11 : LORAX2 = "LC2_C11, LC1_C23, LC4_C11, LC3_C23";
	LC4_C23 : LORAX2 = "LC2_C23, LC3_C11, LC4_C23, LC5_C23";
	LC5_C23 : LORAX2 = "LC6_C23, LC3_C11, LC5_C23, LC7_C23";
	LC7_C23 : LORAX2 = "X, LC6_C23, LC3_C11, LC7_C23";
	LC6_C23 : LORAX2 = "X, X, LC6_C23, LC3_C11";
	LC3_C11 : LORAX2 = "X, LC2_C11, LC4_C11, LC3_C23";
	LC3_C23 : LORAX2 = "X, LC5_C23, LC7_C23, LC4_C23";
	LC3_A16 : LORAX2 = "X, X, LC2_A19, LC3_A22";
	LC5_A16 : LORAX2 = "X, LC3_A16, LC4_A16, LC2_A16";
	LC2_A21 : LORAX2 = "X, X, LC6_A22, LC4_A14";
	LC3_A21 : LORAX2 = "X, LC6_A22, LC4_A21, LC4_A14";
	LC1_A21 : LORAX2 = "LC6_A23, LC3_A21, LC1_A21, LC5_A21";
	LC4_A21 : LORAX2 = "LC6_A23, LC2_A21, LC4_A21, LC5_A21";
	LC6_A22 : LORAX2 = "X, LC6_A23, LC6_A22, LC7_A22";
	LC4_A14 : LORAX2 = "LC6_A23, LC1_A19, LC4_A14, LC7_A23";
	LC4_A16 : LORAX2 = "LC6_A23, LC5_A16, LC5_A19, LC7_A16";
	LC2_A16 : LORAX2 = "LC5_A19, LC3_A16, LC2_A16, LC1_A16";
	LC2_A19 : LORAX2 = "LC5_A19, LC2_A19, LC3_A22, LC6_A19";
	LC3_A22 : LORAX2 = "LC6_A23, LC3_A22, LC4_A22, LC7_A23";
	LC7_A19 : LORAX2 = "X, LC2_A19, LC6_A22, LC4_A21";
	LC1_A19 : LORAX2 = "X, LC7_A19, LC3_A18, LC3_A22";
	LC3_A18 : LORAX2 = "LC4_A16, LC2_A16, LC1_A21, LC4_A14";
	LC4_A19 : LORAX2 = "LC8_A19, LC3_A18, LC6_A22, LC4_A21";
	LC8_A19 : LORAX2 = "X, X, LC2_A19, LC3_A22";
	LC7_A24 : LORAX2 = "LC6_A22, LC1_A21, LC4_A21, LC4_A14";
	LC5_A21 : LORAX2 = "X, LC7_A24, LC1_A22, LC7_A23";
	LC1_A22 : LORAX2 = "X, X, LC4_A19, LC2_A22";
	LC5_A22 : LORAX2 = "X, LC7_A24, LC6_A22, LC4_A14";
	LC7_A22 : LORAX2 = "LC5_A22, LC4_A19, LC2_A22, LC7_A23";
	LC6_A16 : LORAX2 = "LC3_A16, LC7_A24, LC4_A16, LC2_A16";
	LC7_A16 : LORAX2 = "LC6_A16, LC4_A16, LC1_A22, LC7_A23";
	LC8_A16 : LORAX2 = "LC3_A16, LC7_A24, LC2_A16, LC1_A22";
	LC1_A16 : LORAX2 = "LC6_A23, LC2_A16, LC8_A16, LC7_A23";
	LC3_A19 : LORAX2 = "LC7_A24, LC2_A19, LC3_A22, LC1_A22";
	LC5_A19 : LORAX2 = "LC6_A23, LC8_A19, LC4_A16, LC2_A16";
	LC6_A19 : LORAX2 = "LC6_A23, LC2_A19, LC3_A19, LC7_A23";
	LC2_A22 : LORAX2 = "X, X, LC1_A19, LC7_A23";
	LC4_A22 : LORAX2 = "LC7_A24, LC4_A19, LC3_A22, LC2_A22";
	LC3_C20 : LORAX2 = "X, LC4_C20, LC1_C17, LC1_C13";
	LC4_C22 : LORAX2 = "X, LC2_C22, LC3_C22, LC3_C15";
	LC5_C22 : LORAX2 = "X, X, LC2_C22, LC3_C15";
	LC6_C22 : LORAX2 = "X, LC2_C22, LC3_C22, LC3_C15";
	LC6_C19 : LORAX2 = "LC1_A2, LC8_C17, LC6_C17, LC6_C19";
	LC1_C22 : LORAX2 = "LC4_C22, LC8_C17, LC1_C24, LC1_C22";
	LC3_C22 : LORAX2 = "LC6_C22, LC8_C17, LC6_C17, LC1_C24";
	LC2_C22 : LORAX2 = "LC5_C22, LC8_C17, LC6_C17, LC1_C24";
	LC3_C15 : LORAX2 = "X, X, X, LC3_C15";
	LC2_C20 : LORAX2 = "LC3_C20, LC1_C24, LC1_C20, LC2_C20";
	LC1_C17 : LORAX2 = "X, LC2_C17, LC8_C17, LC6_C17";
	LC4_C20 : LORAX2 = "LC1_C20, LC1_C24, LC4_C20, LC1_C13";
	LC1_C13 : LORAX2 = "LC8_C17, LC6_C17, LC1_C24, LC1_C13";
	LC4_C17 : LORAX2 = "X, X, LC4_C20, LC1_C13";
	LC6_C17 : LORAX2 = "LC4_C17, LC1_C24, LC2_C20, LC1_C17";
	LC3_C17 : LORAX2 = "LC2_C22, LC1_C22, LC2_C20, LC3_C15";
	LC8_C17 : LORAX2 = "LC3_C17, LC4_C17, LC3_C22, LC1_C17";
	LC1_C24 : LORAX2 = "LC2_C22, LC1_C22, LC3_C22, LC3_C15";
	LC2_C17 : LORAX2 = "LC1_C24, LC4_C20, LC1_C17, LC1_C13";
	LC1_C20 : LORAX2 = "X, X, LC8_C17, LC6_C17";
	LC1_B18 : LORAX2 = "X, X, LC3_B15, LC2_B15";
	LC8_B15 : LORAX2 = "X, X, LC3_B15, LC2_B15";
	LC8_B20 : LORAX2 = "X, LC1_B18, LC3_B20, LC2_B20";
	LC3_B24 : LORAX2 = "X, X, LC2_B16, LC1_B21";
	LC6_B24 : LORAX2 = "X, LC2_B16, LC5_B24, LC1_B21";
	LC5_B17 : LORAX2 = "LC1_A2, X, LC5_B17, LC1_B17";
	LC7_B24 : LORAX2 = "LC6_B24, LC2_B24, LC7_B24, LC1_B13";
	LC5_B24 : LORAX2 = "LC3_B24, LC2_B24, LC5_B24, LC1_B13";
	LC2_B16 : LORAX2 = "LC2_B24, LC2_B16, LC1_B21, LC1_B13";
	LC1_B21 : LORAX2 = "X, X, LC1_B21, LC1_B13";
	LC3_B20 : LORAX2 = "LC8_B20, LC4_B20, LC3_B17, LC1_B13";
	LC2_B20 : LORAX2 = "LC1_B18, LC2_B20, LC3_B17, LC7_B20";
	LC3_B15 : LORAX2 = "LC8_B15, LC4_B15, LC3_B17, LC1_B13";
	LC2_B15 : LORAX2 = "LC2_B15, LC7_B15, LC6_B15, LC1_B13";
	LC7_B17 : LORAX2 = "X, X, LC3_B15, LC2_B15";
	LC4_B17 : LORAX2 = "LC7_B17, LC2_B24, LC3_B20, LC2_B20";
	LC6_B17 : LORAX2 = "X, LC2_B24, LC3_B20, LC2_B20";
	LC2_B17 : LORAX2 = "X, LC6_B17, LC3_B15, LC2_B15";
	LC2_B24 : LORAX2 = "LC2_B16, LC7_B24, LC1_B21, LC5_B24";
	LC1_B17 : LORAX2 = "LC4_B17, LC2_B17, LC6_B13, LC1_B13";
	LC1_B20 : LORAX2 = "LC1_B18, LC2_B24, LC3_B20, LC2_B20";
	LC4_B20 : LORAX2 = "LC1_B20, LC3_B20, LC5_B20, LC6_B13";
	LC5_B20 : LORAX2 = "X, LC4_B17, LC2_B17, LC6_B13";
	LC6_B20 : LORAX2 = "LC1_B18, LC2_B24, LC2_B20, LC5_B20";
	LC7_B20 : LORAX2 = "LC2_B20, LC6_B20, LC6_B13, LC1_B13";
	LC1_B15 : LORAX2 = "LC2_B17, LC2_B24, LC3_B15, LC2_B15";
	LC4_B15 : LORAX2 = "LC1_B15, LC4_B17, LC3_B15, LC6_B13";
	LC3_B17 : LORAX2 = "LC7_B17, LC3_B20, LC2_B20, LC1_B13";
	LC5_B15 : LORAX2 = "LC4_B17, LC2_B24, LC2_B15, LC6_B13";
	LC6_B15 : LORAX2 = "LC4_B17, LC2_B17, LC5_B15, LC6_B13";
	LC5_A6  : LORAX2 = "X, X, LC2_A12, LC1_A12";
	LC7_A12 : LORAX2 = "X, X, LC2_A12, LC1_A12";
	LC8_A10 : LORAX2 = "X, LC5_A6, LC2_A10, LC7_A10";
	LC7_B3  : LORAX2 = "X, X, LC2_B3, LC4_B10";
	LC8_B3  : LORAX2 = "X, LC2_B3, LC3_B3, LC4_B10";
	LC5_A8  : LORAX2 = "LC1_A2, X, LC5_A8, LC7_A8";
	LC6_B3  : LORAX2 = "LC8_B3, LC1_B3, LC6_B3, LC2_A15";
	LC3_B3  : LORAX2 = "LC7_B3, LC1_B3, LC3_B3, LC2_A15";
	LC2_B3  : LORAX2 = "LC1_B3, LC2_B3, LC4_B10, LC2_A15";
	LC4_B10 : LORAX2 = "X, X, LC4_B10, LC2_A15";
	LC2_A10 : LORAX2 = "LC8_A10, LC4_A10, LC3_A8, LC2_A15";
	LC7_A10 : LORAX2 = "LC5_A6, LC7_A10, LC3_A8, LC1_A10";
	LC2_A12 : LORAX2 = "LC7_A12, LC4_A12, LC3_A8, LC2_A15";
	LC1_A12 : LORAX2 = "LC1_A12, LC8_A12, LC6_A12, LC2_A15";
	LC4_A8  : LORAX2 = "X, X, LC2_A12, LC1_A12";
	LC1_A8  : LORAX2 = "LC4_A8, LC1_B3, LC2_A10, LC7_A10";
	LC6_A8  : LORAX2 = "X, LC1_B3, LC2_A10, LC7_A10";
	LC2_A8  : LORAX2 = "X, LC6_A8, LC2_A12, LC1_A12";
	LC1_B3  : LORAX2 = "LC2_B3, LC6_B3, LC4_B10, LC3_B3";
	LC7_A8  : LORAX2 = "LC1_A8, LC2_A8, LC3_A15, LC2_A15";
	LC3_A10 : LORAX2 = "LC5_A6, LC1_B3, LC2_A10, LC7_A10";
	LC4_A10 : LORAX2 = "LC3_A10, LC2_A10, LC5_A10, LC3_A15";
	LC5_A10 : LORAX2 = "X, LC1_A8, LC2_A8, LC3_A15";
	LC6_A10 : LORAX2 = "LC5_A6, LC1_B3, LC7_A10, LC5_A10";
	LC1_A10 : LORAX2 = "LC7_A10, LC6_A10, LC3_A15, LC2_A15";
	LC3_A12 : LORAX2 = "LC2_A8, LC1_B3, LC2_A12, LC1_A12";
	LC4_A12 : LORAX2 = "LC3_A12, LC1_A8, LC2_A12, LC3_A15";
	LC3_A8  : LORAX2 = "LC4_A8, LC2_A10, LC7_A10, LC2_A15";
	LC5_A12 : LORAX2 = "LC1_A8, LC1_B3, LC1_A12, LC3_A15";
	LC6_A12 : LORAX2 = "LC1_A8, LC2_A8, LC5_A12, LC3_A15";
END;