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原程序如下:6 M, p/ {9 R" O/ J& V% B
library ieee ;9 Q4 A+ E: u+ q$ H9 w1 ?$ U- w% t
use ieee.std_logic_1164.all ;
) `3 Y1 C) n/ j S. R2 tuse ieee.std_logic_arith.all ;- q' L+ ^$ x7 D6 O* R) J/ ]
use work.butter_lib.all ;
2 S$ c0 @( {3 I: quse ieee.std_logic_unsigned.all ;
, u+ O3 @1 x$ D6 M8 } u4 Huse std.textio.all;" x0 n. g3 Q8 w( k& {
! P+ P6 J. ^6 I s' Uentity synth_test is2 Z& U; ^$ `9 q4 T! n! y
end synth_test ;7 ^6 T9 M# Y( K h" Z) z
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architecture rtl of synth_test is
1 g2 \9 E) p" ]7 Z$ {1 q6 W* Ecomponent synth_main
0 N0 Y8 u6 w) \/ O2 [/ E0 vport(
/ H8 o; ?4 v: s- V$ w3 M data_io : in std_logic_vector(31 downto 0);% d5 P; D) h1 G# s
final_op : out std_logic_vector(31 downto 0) ;, P9 g) y( _: y* G( N4 V4 i
clock_main,clock,enbl,reset,init : in std_logic: w7 a8 U. U) Z" R
);
5 U- f0 J% I5 T! Kend component;: _5 E! s2 d' `" m! C, N
signal data_io : std_logic_vector(31 downto 0);
' y, c. l3 k8 ~5 Tsignal final_op : std_logic_vector(31 downto 0) ;( q, {) j0 ?7 N# }9 q4 H
signal clock_main,clock,enbl,reset,init :std_logic;' @+ \# ]) K+ k* A1 p; A
6 m' _: [, Z5 i3 bbegin
" | j0 q9 y* qdut:synth_main port map(data_io=>data_io,final_op=>final_op,clock_main=>clock_main,clock=>clock,enbl=>enbl,reset=>reset,init=>init); o. t1 s, m B
8 A( O/ [. T5 K, W( wprocess
8 R; [. S+ ~1 b7 \; gvariable i : integer := 0 ; w( ]$ C& d2 ?3 [
begin 3 e, R. P* S2 D9 C6 P
for i in 1 to 1000 loop
# m" S: C, ^6 l2 Y; g3 p, S. Nclock <= '1' ;
% x2 z" w! G& k' p$ lwait for 5 ns ;
- [4 U2 l k6 {- {' J% Tclock <= '0' ;
* Q! i, ?& a2 a. o. k* d, H; }" |wait for 5 ns ;
! w* m7 z& l! Q2 \end loop ;
) O0 g, V8 _, r9 B6 ~6 Y8 Xend process ;0 E$ Q: R; b& J" y6 x- S
6 T x9 w' p y- Y' u* r, ^8 bprocess
( ~% i6 c! z0 z: L& d6 s" Bvariable j : integer := 0 ; [! O1 ]& O+ C
begin
( M, N9 h4 r- }: C; e, T% T$ wfor j in 1 to 1000 loop + h( e$ t3 b4 ?' Y" j- t& Z
clock_main <= '1' ;- I0 U- X3 s6 N% n
wait for 200 ns ;
0 E6 V( R" Z `: p) b- u8 `clock_main <= '0' ;
: b: c: i7 e. P5 [. ` r- `wait for 200 ns ;# u+ K8 p6 c" C) E2 x, c1 Q
end loop ;! E( ~- y0 d: `, r# w
end process ;
0 ]4 R+ Z0 K# {9 ?& R% m2 i$ B) p
process5 {+ |6 l/ K9 [) I. A: J# V
file vector_file : text open read_mode is "C:\modeltech_6.5g\examples\rom_ram.in" ;' A0 C/ v+ j: e/ | {3 }
--file vector_file : text IS IN "C:\modeltech_6.5g\examples\rom_ram.dat" ;
# I8 X }! k* y. wvariable l , l2 : line ;
' P$ [. R* g2 a+ a. Q; yvariable q : integer := 31 ;
) m( H3 {! v: {9 Y! g9 D3 l- Svariable count : integer ;" m1 g# {$ o+ @
--variable t_a , t_b : std_logic_vector (31 downto 0) ; ) M! ~4 J1 u. J& y( t0 X
variable t_a , t_b : std_logic_vector (31 downto 0) ;
, W, e/ D) `) m* b7 P; b" wvariable space : character ;' l! K* B6 m/ c
begin ( g9 I) L7 A5 r# s
$ H! _" t" [# U" e! {4 A$ i2 o/ mwhile not endfile(vector_file) loop' n# r8 h8 |1 N% L$ f
--for count in 1 to 16 loop
; i4 }- h* N$ Y( T! {" _5 [5 z' dq := 31 ; ~; G- Z) P2 }! N F
readline(vector_file , l2) ;
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for p in 0 to 31 loop -- data from RAM
6 E5 O) E; u- d' L& y% L1 F! gread(l2 , t_b(q)) ;2 y' v1 t& Q) {$ x. x Y1 u1 A
q := q - 1 ;
: I5 Y. k) ]6 F6 F8 Qend loop ;: S5 _ o1 Q) J: d; p2 h
q := 31 ;' `! ?1 O9 W% u
data_io <= t_b(31 downto 0) ;
6 ~0 ^, B5 y( Z0 c/ s, e& c. c
1 u8 u* X4 {# }4 `# B0 zwait for 400 ns ;! d6 ^) C+ I9 b5 s, K
end loop ;+ q" F1 C9 u) R+ o! A
wait for 8 ms ;
+ P' ?& a w. e/ @( l( v/ |: J--wait for 650 ns ;
`. j8 U" d& l4 Z) _& {end process;
; e7 Y/ R [6 s
5 ?. T$ W5 l& e9 P- j-- process to reset
& d; M: T9 w8 vprocess
* ^; B6 e7 ~* rbegin' F, }& s" b, i) I' Q P
reset <= '1' ;
3 \& s _# F# W: Q8 X9 q; genbl <= '1' ;9 { i2 O! j* \ Z# p
wait for 10 ns ;/ `- v# u4 X" X9 F3 a
reset <= '0' ;8 d/ J/ U. k' m0 p2 x
wait ;1 u1 ~2 E2 q4 x- H& g. W: p3 r
end process ;
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$ Q8 i* Q; |& k; h& j/ s. {4 N# gprocess0 v. U# p$ A' v) D
begin; g6 M( n% U+ Q6 a7 V! ?8 R" V
init <= '1' ;
8 }1 T( r- D$ p! T8 k2 kwait for 15 ns ;: e2 g% C8 r0 r( \- t, ]
init <= '0' ;" Z' d; z6 j5 u, ~+ _9 K( y4 e
wait ;# o! ?( s6 h/ b% f9 L$ p4 t
end process ;2 G, U& o& \" ?; i6 B* a
* W4 g. S+ d* C% z$ |' p: Aend rtl ;
+ |2 y8 ^) J2 |& W$ |% } T! m8 Y8 u9 v) }
3 i7 b5 C p* u' u4 z2 g s- [4 N5 ~9 N( S
用modelsim仿真提示如下错误:No feasible entries for subprogram "read"./ R+ j# H6 a. x, o) P
如果我屏蔽read一行,则程序编程可以通过,我刚学这个,还望高手指点。 |
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