Achronix ACE Version 5.0 - Manual (Page 300)

Running the SnapShot Debugger Chapter 4. Tasks
32 wire arm ; / / / / / S i g n a l i n d i c a t e s SnapShot i s armed ( and has s t a r t e d t e s t i n g p a t t e r n s )
33
34
//////// Now SnapShot macro b l o c k i n s t a n t i a t i o n ///////
35 ACX SNAP SHOT # ( . MNTR WIDTH(MNTR WIDTH) ,
36 .DUTNAME(DUTNAME) ,
37 . OUTPUTPIPELINING ( OUTPUTPIPELINING )
38 )
39 s n a p s h o t i n s t a n c e ( . t c k ( t c k ) ,
40 . tms ( tms ) ,
41 . t r s t n ( t r s t n ) ,
42 . t d i ( t d i ) ,
43 . tdo ( tdo ) ,
44 . u s r c l k ( u s r c l k ) ,
45 . Monitor ch ( monitor ch ) ,
46 . t r i g g e r c h ( monitor ch [ 3 5 : 0 ] ) ,
47 . S t i m u l i ( s t i m u l i ) ,
48 . R s t n o u t ( r s t n o u t ) ,
49 . Arm( arm )
50 ) ;
51
52
u s e r s l o g i c
53 u s e r s l o g i c b l o c k i n s t a n c e ( . c l k ( u s r c l k ) ,
54 . r s t n ( u s r r s t n ) ,
55 . d a t a o u t f r o m b l o c k ( monitor ch ) ,
56 . o p t i o n a l t e s t r s t n i n ( r s t n o u t ) ,
57 . o p t i o n a l t e s t a r m i n ( arm ) ,
58 . o p t i o n a l t e s t s t i m u l i i n ( s t i m u l i )
59 ) ;
60 endmodule
61 ///////////// End o f Sample Example ////////////////////////
VHDL Instantiation:
1 −−VHDL e n t i t y f o r Top−Level Design Example with SnapShot Macro −−
2 −− as well as Users Design block . This example w i l l guide the −−
3 −− user how t o implement SnapShot macro with Users Logic block . −−
4 L i b r a r y IEEE ;
5 Use IEEE . s t d l o g i c 1 1 6 4 . a l l ;
6 Use IEEE . s t d l o g i c u n s i g n e d . a l l ;
7 Use IEEE . n u m e r i c b i t . a l l ;
8
9
e n t i t y u s e r d e s i g n w i t h s n a p s h o t i s
10 g e n e r i c (
11 MNTR WIDTH : n a t u r a l : = 7 2
12 −− This above parameter should be v a r i e d ( 3 6 , 7 2 , 1 0 8 , 1 4 4 )
13 −− depending on t he number o f user s i g n a l s t o be monitored
14 −− i n SnapShot
15 ) ;
16 p o r t ( t c k : i n s t d l o g i c ;
17 t r s t n : i n s t d l o g i c ;
18 tms : i n s t d l o g i c ;
19 t d i : i n s t d l o g i c ;
20 tdo : out s t d l o g i c ;
21 u s r c l k : i n s t d l o g i c ;
22 u s r r s t n : i n s t d l o g i c
23 ) ;
24 end u s e r d e s i g n w i t h s n a p s h o t ;
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26
a r c h i t e c t u r e arch o f u s e r d e s i g n w i t h s n a p s h o t i s
27 component ACX SNAP SHOT i s
28 g e n e r i c (
29 MNTR WIDTH : n a t u r a l ;
30 −− This above parameter should be v a r i e d ( 3 6 , 7 2 , 1 0 8 , 1 4 4 )
31 −− depending on t he number o f user s i g n a l s t o be monitored
32
33
OUTPUTPIPELINING : n a t u r a l ;
34 −− I f we a r e using t he SnapShot outputs S t i m u l i , Arm , and
35 −− R s t n o u t i n u s e r s l o g i c t o d r i v e behavior , we should s e t
36 −− t h i s t o a value g r e a t e r than the d e f a u l t o f 0 .
37 −− S e v e r a l v a l u e s may need t o be t r i e d b e f o r e d i s c o v e r i n g
38 −− the optimal b a l a n c e o f timing c r i t i c a l i t y and SnapShot a r e a .
39
40
DUTNAME: s t r i n g
41 −− This parameter value should match th e user ’ s module name .
42 ) ;
43 p o r t ( t c k : i n s t d l o g i c ;
44 t r s t n : i n s t d l o g i c ;
45 tms : i n s t d l o g i c ;
46 t d i : i n s t d l o g i c ;
47 tdo : out s t d l o g i c ;
48 u s r c l k : i n s t d l o g i c ;
49 Monitor ch : i n s t d l o g i c v e c t o r ( MNTR WIDTH−1 downto 0 ) ;
50 t r i g g e r c h : i n s t d l o g i c v e c t o r ( 3 5 downto 0 ) ;
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