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原程序如下:
8 W/ j: }; K$ o" E* a2 llibrary ieee ;
; M& `# H6 B& Q( k* k% D, ?2 Guse ieee.std_logic_1164.all ;
( R1 e4 Z% }$ V+ l9 V) I/ q3 |use ieee.std_logic_arith.all ;
! M0 J3 W( u0 Quse work.butter_lib.all ;! ~1 P9 S' R4 H+ ?; g n
use ieee.std_logic_unsigned.all ;0 L0 C% J/ |) L
use std.textio.all;" r& g6 ^8 f, A
* e- h2 }8 Y7 I( x, X
entity synth_test is& N6 q+ |7 t7 O; W) s
end synth_test ;
8 |* V% e* C. g) D# X
8 R' n D" N" k+ P: Sarchitecture rtl of synth_test is
1 }+ M- X, {; c3 |3 ?component synth_main
) Q$ |( U. {. R7 |) ~7 q! k0 _port(: P" |! |* X5 D5 h
data_io : in std_logic_vector(31 downto 0);/ ^. |/ \4 |' E* a3 Q
final_op : out std_logic_vector(31 downto 0) ;
/ K: ?" S, L N: [- B& r clock_main,clock,enbl,reset,init : in std_logic
6 x8 ^5 d# p6 Z+ F* U );
9 [; q: m5 k2 k+ }end component;
* D. ~7 }' {+ l c8 t3 Zsignal data_io : std_logic_vector(31 downto 0);
. U+ N2 M8 P9 M; P2 x) e* Esignal final_op : std_logic_vector(31 downto 0) ;
) Y# q: X4 K( {. R' o1 N; qsignal clock_main,clock,enbl,reset,init :std_logic;/ H m+ A4 Q1 e3 H) _
. v$ q @$ s9 a
begin3 K) |. W( b! l* O, z8 s& j% s2 f2 ~
dut:synth_main port map(data_io=>data_io,final_op=>final_op,clock_main=>clock_main,clock=>clock,enbl=>enbl,reset=>reset,init=>init);- f! Z7 _; _$ S4 @& E! g1 D9 [& J
9 ~# P1 `8 ?* u$ K; eprocess3 E3 y0 W' s- A/ g2 [
variable i : integer := 0 ;! b$ F5 l. k# H$ d ]$ f/ d) V
begin 8 ?2 E G$ G8 v. {* @' E+ }
for i in 1 to 1000 loop
+ `, D3 @# U( z- Y+ ~# A! Kclock <= '1' ;
* h- G1 R( N) s* mwait for 5 ns ;0 l l! u' H" C! S
clock <= '0' ;
* \, x' O9 _5 w, \wait for 5 ns ; _2 \% X+ V; M9 I2 U3 D9 d: W
end loop ;
! L* {+ \ t3 i( `; e E& zend process ;
7 ~, z/ N: [# d/ v# {
- b( V; k! X) H% y6 v* i& y. Fprocess
$ t1 s% Z. A& m# \variable j : integer := 0 ;( s1 }$ t- \0 X) O) k+ u
begin : G$ i& \# |, J
for j in 1 to 1000 loop
1 g* D8 a" |9 m& T' ]3 W+ sclock_main <= '1' ;6 }' X% }, M1 E7 c7 U$ T9 G/ K
wait for 200 ns ;
6 A# V; X: S' N& @4 Eclock_main <= '0' ;
# ~+ f# E- r0 S, P- x) ]wait for 200 ns ;' ]* \" @% v# t8 [) Q$ Z% u5 E0 Z& T
end loop ;
( \ [* S1 C) ~# `5 iend process ;: R. e) G& \# }4 j
( d$ s: B7 `0 M% L9 U9 A; Z7 Cprocess2 T# \2 j; O$ o7 r' _
file vector_file : text open read_mode is "C:\modeltech_6.5g\examples\rom_ram.in" ;
, z# P1 g% f: t7 k) |/ q5 X: n--file vector_file : text IS IN "C:\modeltech_6.5g\examples\rom_ram.dat" ;+ l6 ^2 J! c+ T% U% O
variable l , l2 : line ;
* \* ?! G7 Z S: U1 @ j& T8 avariable q : integer := 31 ;5 \5 j- S$ n; U3 P: A3 x
variable count : integer ;: U* D( j1 _0 o) j
--variable t_a , t_b : std_logic_vector (31 downto 0) ;
; {& `* A6 _& a; Vvariable t_a , t_b : std_logic_vector (31 downto 0) ; 2 u) G3 }! t- I' m9 A
variable space : character ;$ G# W& x3 u& w4 o! f
begin 1 ]: W e8 n7 \' `( U
8 M7 X* t3 m5 j1 V5 @, g5 lwhile not endfile(vector_file) loop9 t+ C# r5 w5 r$ h5 v+ k5 I
--for count in 1 to 16 loop9 {0 w4 E: H; w5 x) [' r6 o
q := 31 ;
! b, X6 d# p c. o& ereadline(vector_file , l2) ;
. _( r4 Y8 g$ Q3 ?1 f4 ?' }/ A$ x# Q: n7 f( s9 D+ s- f
for p in 0 to 31 loop -- data from RAM! V% p* P2 `# H: v" Z: D+ [! {
read(l2 , t_b(q)) ;
# P8 |3 P! @3 k9 |" t5 A6 sq := q - 1 ;4 o: }) ]* h: o- Q' X
end loop ;2 z0 g1 m! z; V
q := 31 ;
( H, T6 K' a4 {; Q# U& d, y- }data_io <= t_b(31 downto 0) ;
6 {. z, Z5 t7 v" |7 ?$ H- s" j& u N% U5 s. T. z
wait for 400 ns ;
0 r. i) E2 E; _) k% N2 v, s( ^9 X$ }end loop ;
) P- r$ f0 l; n) d( qwait for 8 ms ;/ p; v' n6 r* Q, G' t7 @# T) \+ l
--wait for 650 ns ;; {7 ?; Y. M1 ^% i" z4 f1 L
end process;
, w' B8 ~" Q1 S+ L7 v5 ]! j. N
$ f8 z0 K, V7 {, |" ?( w-- process to reset( D, K7 T# }' w2 ]) `
process+ j$ X7 M+ H b
begin
$ r# u u+ Z+ Preset <= '1' ;: j' a' K) Z7 ]! _ Y+ _
enbl <= '1' ;' k: ]3 W9 f( S& D& ]6 {
wait for 10 ns ;% Z G3 O& B, J
reset <= '0' ;
+ P# g" E9 e$ M4 pwait ;
+ D/ S! x3 U# W3 h* z: u. @ m' wend process ;
8 c" }3 m; j" x$ [3 Z- {
5 X7 f2 }: e, Jprocess C4 r: _9 ~5 A" ?% M, k
begin7 j8 J3 F: \5 u
init <= '1' ;1 J& }% Q6 y( I
wait for 15 ns ;
( d/ F# u7 q7 T# V' S, Q! Ninit <= '0' ;) b* U* ^9 `: H: k7 U/ `2 q. A
wait ;
6 q1 C" B" o- I+ u2 Lend process ;; p0 s: v. K& Y- o
4 q, l+ G. W7 k: q+ I
end rtl ;9 H* _2 k7 N- O7 f( Y- [$ i: b
3 ^/ n) u( u+ B F% Y4 F
* O- h$ \" ~) }: i- u. N$ V
. n* j/ ]5 Z7 G# d& d用modelsim仿真提示如下错误:No feasible entries for subprogram "read".
$ v) s% V( \( d M7 m( ~+ {1 o7 i, L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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