WEBVTT 00:00.060 --> 00:06.660 So when we consider the scenario where we want to verify the Operation Fire design that is designed 00:06.660 --> 00:10.890 and destroyed, so we could have three possible methods to do that right. 00:11.100 --> 00:14.080 First method is where we manually apply a stimulus. 00:14.100 --> 00:16.890 OK, so this we've been doing from the beginning. 00:16.890 --> 00:24.930 So we use the force constant air force to apply the manual stimulus to a duty and then we are analyzing 00:24.930 --> 00:25.650 a response rate. 00:25.660 --> 00:27.060 So this is time consuming. 00:27.270 --> 00:29.010 If you have a complex design, right? 00:29.010 --> 00:32.850 And in that case, we prefer to write the dispatch, right? 00:33.120 --> 00:39.240 So when we consider it has been showcased, we have a set of construct which are specifically there 00:39.240 --> 00:42.180 for performing a verification of our design, right? 00:42.360 --> 00:47.130 So they need not have to be synthesized, but they could be non synthesized. 00:47.280 --> 00:51.270 Right now we have two alternatives, so we could write it test painting. 00:51.300 --> 00:56.070 We used to write or we could write it and very now remember. 00:57.330 --> 01:02.490 It doesn't matter which language you have utilized to develop your duty. 01:03.300 --> 01:10.920 This bench could also be available, so we've been utilizing we still as a for looking our decide. 01:11.460 --> 01:13.710 So if you considered it, do you? 01:14.430 --> 01:15.430 So it is returning. 01:15.780 --> 01:18.450 We we you know, this is completely a different model. 01:18.720 --> 01:22.050 And then we will be writing one more source code, right? 01:22.320 --> 01:24.990 And that will basically behave as a desperate trade. 01:24.990 --> 01:28.830 So this will be generating a random stimulus that will be applying to a duty. 01:29.070 --> 01:31.680 And then we will be analyzing the response rate. 01:31.680 --> 01:37.860 So we will be applying a stimulus and then we'll be analyzing the response of our design, right? 01:37.870 --> 01:43.110 And then we'll be comparing it with the gold and we don't see whether our design is correctly behaving 01:43.110 --> 01:43.590 right now. 01:43.620 --> 01:49.140 Test bench could be of reagent type or it could also be on very long. 01:49.320 --> 01:52.260 Great note here our agenda will be first. 01:52.260 --> 01:57.300 We will be considering how we work around with manual stimulus. 01:57.960 --> 02:01.890 This is the easiest step to start understanding the test bench. 02:02.100 --> 02:06.290 Then we probably consider a few simple example we can you right? 02:06.480 --> 02:12.600 And then we will be focusing more on our very low as the language for her test page now. 02:12.810 --> 02:20.040 A primary reason for choosing a very long war still is it provides us the technical function that could 02:20.040 --> 02:28.230 be used to analyze the value of variable easily as compared to we actually could also be used to generate 02:28.230 --> 02:36.390 the random stimulus for the different set of an input as compared to it, and it could also be utilized 02:36.390 --> 02:40.470 to generate the complex signals which could be applied to what you do. 02:40.500 --> 02:41.580 And that is the reason. 02:41.910 --> 02:46.600 What we're going to do is we will be choosing test language to be very low. 02:46.600 --> 02:53.010 No, you do not need to worry because you are not anyway utilizing very lot for creating a design, 02:53.010 --> 02:53.240 right? 02:53.250 --> 02:58.940 So the way by which we will be creating a design is by utilizing vision, right? 02:58.980 --> 03:04.110 So you are now good at handling how you design your right. 03:04.350 --> 03:10.950 The only thing that we want to do is we will be taking the help of a non synthesize able construct that 03:10.950 --> 03:14.370 we have in a very low rate, so they are anyway not synthesized. 03:14.910 --> 03:20.190 So if you utilize them in an instant, they will be simply ignored, right? 03:20.580 --> 03:23.970 So we will be taking the help of the non synthesize. 03:23.970 --> 03:26.550 It will construct that we have in a very low. 03:26.580 --> 03:29.030 And then we will be building the complex stimulus. 03:29.490 --> 03:34.290 And again, simulator is capable of handling the mixed language, right? 03:34.290 --> 03:40.050 So we could have this bench written in a very low, OK, and we're going to have our duty. 03:40.050 --> 03:41.940 That is our design and innovation. 03:42.060 --> 03:48.840 OK, so the primary reason for choosing very local where version for writing the test benches, it provides 03:48.870 --> 03:53.640 a set of a function which could be used to build up the complex expression, right? 03:53.640 --> 03:59.340 So that is the first advantage that we get where we could easily build up the complex expression. 03:59.400 --> 04:05.040 OK, now this doesn't mean we could not be the complex expression in a version, but the effort and 04:05.040 --> 04:10.320 time that we spend for building a complex expression and vision is far more as compared to very low 04:10.320 --> 04:16.350 rate, and our agenda will be to develop as we are just writing the test cases. 04:16.380 --> 04:16.680 OK. 04:16.890 --> 04:20.280 So the language provides us the easier methods. 04:20.310 --> 04:20.640 OK? 04:20.970 --> 04:22.530 We could actually choose it, right? 04:22.710 --> 04:27.630 So we could write the complex expression OK for a signal. 04:27.840 --> 04:34.290 The second advantages that display functions that we get, OK, that could be used to easily analyze 04:34.890 --> 04:36.810 the values of a variable. 04:36.840 --> 04:37.170 OK. 04:37.350 --> 04:42.090 So these are very, very easy to handle as compared to the display functions that we get with them. 04:42.390 --> 04:48.630 And remember, we usually just strongly type language and that basically restrict us to perform the 04:48.630 --> 04:53.730 strict confusion between the time before we actually use the display function right there as very long 04:53.730 --> 04:55.000 as a weekly type language. 04:55.010 --> 05:01.370 So display function works without a conclusion, and that is the second advantage that we get now. 05:01.380 --> 05:09.420 As we progress further, we'll be understanding that one page is OK as we demonstrate the usage of available 05:09.440 --> 05:10.600 writing letters, right? 05:11.280 --> 05:12.600 And the third one is. 05:13.610 --> 05:18.170 You get in capability where you could use the pseudo. 05:20.170 --> 05:20.800 Random. 05:22.990 --> 05:23.530 No. 05:25.670 --> 05:26.590 Generators. 05:26.750 --> 05:27.050 Right. 05:27.710 --> 05:34.300 So this helps to generate the random stimulus for our duty rate, and this is far more easier to compare 05:34.350 --> 05:38.060 to if you're going to rate the generation offering them no return rate. 05:38.240 --> 05:46.490 So this gives us motivation that we could learn the very lot looking for specifically for writing the 05:46.500 --> 05:46.730 test. 05:46.970 --> 05:53.310 And we will be focusing primarily on understanding of very low to write the test drive. 05:53.330 --> 05:59.870 So we won't be considering how you design the system with a very low that is not at all our agenda in 05:59.870 --> 06:00.980 this specific course. 06:00.980 --> 06:05.630 Our agenda will be simply how you easily read the stimulus.