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剛學FPGA/CPLD 現在學VHDL寫出7段顯示器。
/ d1 r% l) z+ Mentity sedg7 is
5 D- Y, [4 O [/ }7 y Port ( S : in STD_LOGIC_VECTOR (3 downto 0);% l% s7 c7 X& A" v- f8 H2 h
Y : out STD_LOGIC_VECTOR (7 downto 0);. [% d& \+ u' c: l2 }
a,b,c,d,e,f,g,p : out STD_LOGIC);
, a8 N$ p1 F2 P; L& a4 Dend sedg7;
6 N# u E7 g' S% T' b
- n5 p$ E. f9 I; w/ }- Warchitecture Behavioral of sedg7 is
% Z6 D& o& k: w4 m ?
' k) K9 o% C: g- b: tbegin8 I* k1 U4 g5 v8 M
Y<= "00000011" when S= "0000" else : F2 m3 J f/ k/ {4 l9 N
"10011111" when S= "0001" else , e5 q9 @1 Q) l" s! ` O9 D
"00100101" when S= "0010" else # [& H3 `) c i' y B: T
"00001101" when S= "0011" else
0 I( l3 S5 B; @ e6 @9 [$ W "10011001" when S= "0100" else $ r) C6 Y8 ?3 X" w7 W! @3 L; D
"01001001" when S= "0101" else
8 N5 Y1 X" L8 f# ?/ `) ~8 ]) S, l "01000001" when S= "0110" else
8 E7 ]( N+ Q! s- E% m "00011011" when S= "0111" else 6 @) _( u3 i- M4 G, {) D7 N, Q1 T" p
"00000001" when S= "1000" else
! J1 Y9 F6 }% c. y "00001001" when S= "1001" else
% R+ s" I4 R; } Q' l+ u: j "00010001" when S= "1010" else - X' W* X' b2 g0 `: @
"11000001" when S= "1011" else
6 @8 z7 | l6 @7 N "01100011" when S= "1100" else 2 y8 f2 H% [. T% T
"10000101" when S= "1101" else , e: A$ t) S ]+ y1 |
"01100001" when S= "1110" else
. G/ @6 r% i5 r( k, }8 t: v "01110001" when others ;
* j+ ?2 Q# p8 ~( n
" o0 ~4 z8 M4 l a:= Y(7);
6 \' J- a3 k. ]( ~3 _. t b:= Y(6);8 N+ g9 [8 ]( T1 A4 n3 _7 {$ p+ ~5 E
c:= Y(5);
9 t$ W( L/ U- q$ |2 O, I0 X% G3 K d:= Y(4);
8 D! W _2 E! Y1 w$ G" G e:= Y(3);
7 ~, N4 e, ~9 J4 ?( \) @2 v6 U f:= Y(2);; }! u8 y+ L. N9 v( B! Y1 Z
g:= Y(1);2 C' [# ]2 O1 B
p:= Y(0);+ v) B/ {' _, S0 d0 \0 @
SEL0<= '0';- \2 c& Z3 f7 n$ l7 E6 F
end Behavioral;
% h; v5 B: o6 `
; h3 `1 ]/ i& C+ t; ^7 r4 @$ GERROR:HDLParsers:164 - "D:/ypj2008/4e2afpga/sedg7/sedg7.vhd" Line 54. parse error, unexpected OTHERS
2 m' S5 r0 X- M1 H2 l4 H( w2 VERROR:HDLParsers:3312 - "D:/ypj2008/4e2afpga/sedg7/sedg7.vhd" Line 64. Undefined symbol 'SEL0'.) O, ?5 ~+ U$ G( g U, u% I
一直錯誤~"~ 實在搞不懂... 誰可以幫幫我呢? 感謝~ |
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