Modelsim se5.5e使用要点 ENTiTY fa Is PORT( a, b, ci: in bits cO,S: OUT bit); END fa: ARChiTECTURE rtl of fa Is BEGIN S<=a xor b xor ci co<=(a and b or(a and ci or(b and ci; end rtl:ENTITY fa IS PORT ( a ,b,ci: IN bit; co,s: OUT bit); END fa; ARCHITECTURE rtl OF fa IS BEGIN s<=a xor b xor ci; co<=(a and b) or (a and ci) or (b and ci); end rtl; Modelsim SE 5.5e使用要点