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原程序如下:
/ O5 j3 u$ X1 v5 C x8 J0 Y' j qlibrary ieee ;% t; @+ n* `4 A7 c7 p; p2 J7 g# @
use ieee.std_logic_1164.all ;$ D! \$ C- g* D& b# U
use ieee.std_logic_arith.all ;6 ?! t" }* [" w1 ^& x5 q' Q
use work.butter_lib.all ;% n9 n% B. A* D0 }
use ieee.std_logic_unsigned.all ;( Q( d- ]* E. Q3 h5 R# x5 Y
use std.textio.all;
0 }- i1 R( W" [9 y9 G$ ?
& o6 w$ g% c# Y7 {& _$ Tentity synth_test is* K7 A& {4 `) J
end synth_test ;
8 r; H {2 g0 z, ^
3 W5 p7 o* Y, F6 Y' `# T3 carchitecture rtl of synth_test is 6 `+ n& h+ N0 ^& W
component synth_main+ B' P$ ]# d$ Z) _* X) Y
port(
, r& i: C1 f9 Q. X1 Y* O+ F# P data_io : in std_logic_vector(31 downto 0);
. f2 y% i, r7 Z/ L3 o) u3 O& z/ I8 ~2 d final_op : out std_logic_vector(31 downto 0) ;
1 F* M2 x) v* V( V clock_main,clock,enbl,reset,init : in std_logic
6 z/ c: s p' p7 `+ T4 T4 |/ a );
. R$ Q2 C; _$ k/ z0 y1 r: u0 bend component;
O$ U4 }* V: U7 k$ r$ y8 X1 A4 ssignal data_io : std_logic_vector(31 downto 0);
' _ f' O# d+ U; M: `9 Ysignal final_op : std_logic_vector(31 downto 0) ;8 f# j; u1 z/ B5 i
signal clock_main,clock,enbl,reset,init :std_logic;
5 m* A! k4 N; ^
3 F( k; G6 H7 cbegin
- n3 _! P1 \2 M* sdut:synth_main port map(data_io=>data_io,final_op=>final_op,clock_main=>clock_main,clock=>clock,enbl=>enbl,reset=>reset,init=>init);7 C* v% [: @! P+ Y' S! R s; U- `3 \
! W0 D! |0 K) h' I. U) Q+ w. Gprocess
; Y& f8 R' w3 |- I0 mvariable i : integer := 0 ;
4 y; [6 ^% l+ U& y' [begin 7 F: q- W/ h9 |
for i in 1 to 1000 loop ( x, t2 {, z& [ }" F
clock <= '1' ;0 X# P1 _) n' n/ h6 w% K
wait for 5 ns ;
$ H! N1 j0 V% m# c; V' ]clock <= '0' ;
) d6 L: e2 c- Z- o. qwait for 5 ns ;1 U& H3 P5 a8 c% k4 F" A
end loop ;. i5 w+ J4 N s% g! D
end process ;
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7 V8 b9 q H! m9 hprocess
* T# p; l$ R, g- D9 P8 @variable j : integer := 0 ;! J& f! z# f: g
begin * K# ^) g/ Z, s% c8 ^
for j in 1 to 1000 loop
% _% g7 _; T5 k3 xclock_main <= '1' ;
* K' b1 p) b; l% m- d$ Ywait for 200 ns ;; L; G4 G3 l: h' l" F
clock_main <= '0' ;
+ }0 i9 \6 z$ W+ C6 fwait for 200 ns ;
: V# C: k+ |/ \1 ?8 E# X( Wend loop ;' k3 O! Y7 B' e6 N+ w. t
end process ;
/ m/ j: F' P1 D9 e6 G% J/ C- j1 H& w v" ~3 h/ K0 Z' i
process8 ?6 [$ F' ` q4 b; d$ H0 E! e+ T
file vector_file : text open read_mode is "C:\modeltech_6.5g\examples\rom_ram.in" ; F; ^; x6 g8 G6 z3 m
--file vector_file : text IS IN "C:\modeltech_6.5g\examples\rom_ram.dat" ;
% E7 e b+ X, Dvariable l , l2 : line ;2 k9 N$ d9 d3 X) i( B
variable q : integer := 31 ;9 i( z! T7 c2 s; _: t3 h
variable count : integer ;
% T/ r5 q1 u+ T" i--variable t_a , t_b : std_logic_vector (31 downto 0) ; ! l7 H2 r0 t1 z- A4 G. @
variable t_a , t_b : std_logic_vector (31 downto 0) ; 5 k" \3 q b* q3 v/ z Y% _" f# q
variable space : character ;' F; O; y2 b* d+ v9 f+ f
begin
4 @3 U6 K7 T W @7 ~/ p: [* A' Q( k: C- _3 ^# n
while not endfile(vector_file) loop; |& C( w3 f, ]5 A& y2 j0 ?* [
--for count in 1 to 16 loop5 i1 k* ]0 s7 y+ @" P2 y
q := 31 ;# j s8 L/ n: i: b' j
readline(vector_file , l2) ;
" ^$ p9 h i/ I9 o1 S# [0 ]" W' M8 F2 x
for p in 0 to 31 loop -- data from RAM; L3 U9 I4 k, t+ g: O" n+ B
read(l2 , t_b(q)) ;
# a9 M' z' [& f0 Y, G+ Nq := q - 1 ;
+ S2 g l2 G: z2 l) j# e4 s. Fend loop ;
! t) H: [! X9 k7 ~# M! T2 x! Uq := 31 ;
) N6 ~+ O& n1 N4 j3 U0 mdata_io <= t_b(31 downto 0) ;' ?/ E1 l# |0 q c7 |
, Y! b' n" Q, p0 y9 w" Y
wait for 400 ns ;
- [. J: e' d9 v# Y2 u) l' y/ b5 Z+ bend loop ;
' o! n2 a" }, C5 {wait for 8 ms ;
. U6 d2 Q2 C. d( x: n--wait for 650 ns ;
9 X/ C& u: r: Tend process;! S* m1 f- u& `! d% @4 s
, d R( Q* a6 @6 D( G
-- process to reset& }7 ~0 o& P$ F) x
process# {! _! B. Q- h, J& s# n
begin
) U; Z7 Z3 B2 k" K4 N) i* Y0 w% ereset <= '1' ;& w$ B& ]. ~* J2 r4 k% t
enbl <= '1' ;: \3 g. P5 u. O. x0 A' s+ f
wait for 10 ns ;
`5 H+ c" k7 v% p( G; R/ ~reset <= '0' ;" P' o3 l% X) v+ h7 I( j+ b
wait ;
* R1 i! H$ @" M$ R. lend process ;
- B0 W) p# j* q- [* ~" ~. u3 I7 M3 ~+ T# W$ P1 Y
process L! x- `0 c: `0 ?# R
begin# [; [1 a. [* X. p0 p
init <= '1' ;* p) O b7 O M4 W- d
wait for 15 ns ;% `. ?, Z/ Q) u% B7 V
init <= '0' ;" C% a' p, l- i
wait ;
: I0 ]9 O5 @" g* n q) S! \end process ;
, A/ `0 e4 w) D7 W: _4 v- d4 z
( [7 m8 s6 Y+ F& Y2 }/ D9 |0 Zend rtl ;
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& G) d) q5 n( {
6 b% N5 n9 m) `8 E用modelsim仿真提示如下错误:No feasible entries for subprogram "read".
% O6 Y' P( v! T: ?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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