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library ieee; use ieee.std_logic_1164.all; entity i486_bus is generic ( --下面的时间特性基于I486DX 50 constant t6_max : time := 12 ns; constant t10_max : time := 1

package bit_pack is --功能是把bit_vector转换成整型 function vec2int(vec1:bit_vector) return integer; --功能是把integer转换为bit_vector类型 function int2vec(int1,Nbits:integer) return bit_vector

-------------------------------------------------------------------------------- -- -- AMD 2910 Benchmark (Functional blocks) (Algorithmic Behaviour of Funct blocks) -- -- Source: AMD data book

-------------------------------------------------------------------------------- -- -- AMD 2910 Benchmark (Functional blocks) (Algorithmic Behaviour of Funct blocks) -- -- Source: AMD data book

-------------------------------------------------------------------------------- -- -- FULL adder Benchmark -- Simulation Vectors -- -- -- Authors : -- Beijing Institute of Technolog

-------------------------------------------------------------------------------- -- -- 4-Bit Full Adder -- -- Benchmark author: Han Shu -- -------------------------------------------------------

--*************************************************************************** -- pack.vhdl * -- VHDL BIT_VECTOR Ope