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樓主 |
發表於 2008-5-14 22:45:18
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只看該作者
感謝囉!!後來我改成這樣* G& k5 x8 I7 X) R: y& k u0 q
entity sedg7 is
* S b! R+ C( e2 A Port ( Enable : in STD_LOGIC;
: j1 I: w, X7 Q8 F/ E) [ X : in STD_LOGIC_VECTOR (3 downto 0);* m1 D9 @& _. P# G7 Z$ l, J& e
a,b,c,d,e,f,g,p : out STD_LOGIC;. \9 m7 e1 |; c& w6 ]0 G2 `/ J
SEL : OUT STD_LOGIC_VECTOR (5 DOWNTO 0));
+ o9 R4 i8 z0 A; g7 B ; K; k% b: t# Z
: k) b5 w. p; u* Y, X4 Y [
! h% e% u. d- |end sedg7;4 U5 ? u/ B+ ~; B1 K* x5 b
+ e0 x- P- A. barchitecture Behavioral of sedg7 is
' I2 X9 z- C, b, e$ D rSIGNAL Y : STD_LOGIC_VECTOR (7 downto 0);
0 w2 @# @- P$ x$ Q5 gbegin( z# Z" p% c4 b- @9 k+ q: v
Y<= "11111111" WHEN Enable= '1' ELSE, }0 V% C# k- E6 `8 i3 U
"00000011" WHEN X="0000" ELSE8 A+ _% D$ H9 R& P
"10011111" WHEN X="0001" ELSE
& B) ~! u n3 V" a0 k! H "00100101" WHEN X="0010" ELSE- h7 }; O$ M; r% E/ v: r
"00001101" WHEN X="0011" ELSE
6 s, D# T9 ]( r& P$ n "10011001" WHEN X="0100" ELSE1 E0 ~; _+ }( T( w
"01001001" WHEN X="0101" ELSE" X1 A+ K! n% `9 ~4 q) ^3 g
"01000001" WHEN X="0110" ELSE p# C) A, T# n0 {* F
"00011011" WHEN X="0111" ELSE
. ?! t, I4 b" ~, B. g. W "00000001" WHEN X="1000" ELSE* z2 b, Q. D1 t8 H, l L- ~: F; `
"00001001" WHEN X="1001" ELSE1 q/ `, O$ f/ |* A+ @! Z2 O% g$ h
"00010001" WHEN X="1010" ELSE/ N H4 h; A. A3 c
"11000001" WHEN X="1011" ELSE
1 t, I+ I, P% s; J' b& _: b "01100011" WHEN X="1100" ELSE
. t; B8 b7 e" _5 M "10000101" WHEN X="1101" ELSE( J! z) S& h2 _1 k+ Y, N
"01100001" WHEN X="1110" ELSE
3 | ^6 Q' Q) k+ [* K "01110001" ;! n( f2 h/ W, ?+ F8 T3 x
a<= Y(7);7 T% l! q, I$ \* a9 m
b<= Y(6);; |5 \) K! b4 p0 g9 f
c<= Y(5);
7 D' d( ?. [6 F& M0 e5 B5 ~ d<= Y(4);
/ C& t; h' y5 G/ D4 a e<= Y(3);
9 W! y9 v4 W3 K" ^! ?' e f<= Y(2);
7 }4 s& l9 X; t2 [& z; x g<= Y(1);
! V6 P8 f9 I' E8 r1 T p<= Y(0);
" p! G" p4 q" l/ e! A SEL<= "111110" ;6 z5 T) `- v) O5 {, r4 K& ^
end Behavioral; |
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