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Bit vector 宣告也是.
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Signal S1, S2, S3: std_logic_vector (7 downto 0);
' R/ N: v. o) a: U, LSignal B1, B2, B3: bit_vector (7 downto 0);" n. S. ^9 M+ F: X* B
B1<= “11001100”;. A8 }0 z1 ?( P6 R, P# R# Y
B2<= X”FF”;# e6 G: ^, D. W R% i" J; t
B3<= “11” & O”77”;-- Match the length by concatenating 2 bits with two octal digits8 n1 m* Y/ |; H' _
S1<= “11001100”;- |0 B+ x6 R0 E, W
S2<= To_StdLogicVector (X”FF”);# I) \! b# W) R6 h* u
S3<= To_StdLogicVector (O”377”);-- Length taken care by To_StdLogicVector( ) |
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