WEBVTT 1 00:01.600 --> 00:03.100 Hello and welcome. 2 00:03.100 --> 00:07.570 In this practical, we are going to take a look at the AND operations. 3 00:07.570 --> 00:12.880 And the AND operations have got this syntax: source, destination. 4 00:13.570 --> 00:17.590 So the result of the AND will be stored in the destination. 5 00:18.130 --> 00:20.110 And there are few variations here. 6 00:20.110 --> 00:24.490 You can AND register immediate and register register. 7 00:24.490 --> 00:26.260 So let's try them one by one. 8 00:26.980 --> 00:36.490 And for the purpose of this exercise, we are going to make use of these values from the slides over here. 9 00:37.210 --> 00:40.000 So the first value will be this, 10 00:40.000 --> 00:41.290 and the second value will be this, 11 00:41.290 --> 00:42.790 and the result should be this. 12 00:43.240 --> 00:49.870 We are going to store the first value here into the register. 13 00:50.590 --> 00:57.400 And then we are going to use the immediate value over here as the second parameter. 14 00:57.970 --> 01:01.750 So now we're going to store this value in the register. 15 01:01.750 --> 01:04.030 So we are going to use - as an example. 16 01:04.300 --> 01:06.310 You could also use other registers. 17 01:06.790 --> 01:09.550 Let's move this value into -. 18 01:10.870 --> 01:18.640 So the value that we are going to move into - is this value: 00100000. 19 01:18.640 --> 01:19.900 So let's do that now. 20 01:23.970 --> 01:26.430 Move -. 21 01:26.580 --> 01:31.230 And then for the prefix, instead of 0x, which means hex, 22 01:31.410 --> 01:33.930 now we put 0b, which means binary. 23 01:34.200 --> 01:36.210 Now we can type our binary number. 24 01:42.590 --> 01:43.550 Okay, okay. 25 01:45.380 --> 01:47.600 So in hex it is 20. 26 01:48.320 --> 01:49.550 So we step over this. 27 01:49.550 --> 01:53.210 Now we run to this breakpoint first. 28 01:53.210 --> 01:55.220 Before that, make sure you put the breakpoint. 29 01:55.970 --> 01:57.650 This is your template 2x. 30 02:00.640 --> 02:04.120 Step over until you come to this line. 31 02:05.530 --> 02:06.400 Step over that, 32 02:06.400 --> 02:08.170 and now you see the value. 33 02:08.200 --> 02:10.450 20 is already in -. 34 02:10.840 --> 02:13.330 Next, we are going to AND with this value here. 35 02:16.010 --> 02:20.030 AND -, 0b 36 02:22.640 --> 02:26.750 01100111. 37 02:35.740 --> 02:38.110 So let's step over and see the result. 38 02:40.320 --> 02:41.910 Right, and you go back to 20. 39 02:42.540 --> 02:48.420 So 20 is the original value that we input here. To confirm this, 40 02:48.450 --> 02:51.570 you can use your programmer's calculator. 41 02:52.020 --> 02:55.950 So let's search for calculator and then... 42 02:59.790 --> 03:01.260 Make sure you use the programmer one. 43 03:01.260 --> 03:03.570 You can change the calculator here. 44 03:04.350 --> 03:09.270 Standard or scientific or programmer. 45 03:10.170 --> 03:12.990 And here, set it to byte. 46 03:13.920 --> 03:16.860 And here, the input, change it to binary. 47 03:17.370 --> 03:19.230 So let's put in the first value. 48 03:20.100 --> 03:21.210 So type it in. 49 03:27.670 --> 03:28.990 This is the first value. 50 03:29.020 --> 03:33.010 Now the second one, we are going to perform a bitwise AND operation. 51 03:33.010 --> 03:39.430 So let's tap on that and AND, enter the second value here. 52 03:47.720 --> 03:54.020 You close, and you get 00100000, which is 0x20, which we are seeing here. 53 03:54.380 --> 03:55.580 So this works. 54 03:55.580 --> 03:57.890 That means this proves that the result is correct. 55 03:57.890 --> 03:58.670 The result. 56 03:59.330 --> 04:07.760 Next, we are going to try the second variation, which is register to register, AND register, 57 04:07.760 --> 04:08.210 register. 58 04:08.210 --> 04:12.080 So we are going to use the - here and - here. 59 04:12.410 --> 04:14.630 So - already got 20. 60 04:14.630 --> 04:18.620 So now we're going to move the second value into -. 61 04:18.620 --> 04:19.760 This value here. 62 04:20.990 --> 04:24.320 So we type: move -. 63 04:34.920 --> 04:35.850 Hit okay. 64 04:36.870 --> 04:37.650 In hex it's 67. 65 04:40.990 --> 04:46.450 And now the 67 is in the, is in, is in -. 66 04:46.510 --> 04:50.890 So let's confirm the 67 is indeed this number, this value here. 67 04:51.040 --> 04:54.340 So we clear all this and we key in this: 68 04:54.340 --> 05:01.960 01100111. 69 05:01.960 --> 05:04.180 And we see, indeed, it is hex 67. 70 05:06.070 --> 05:07.510 So this is this number. 71 05:07.540 --> 05:11.020 So now we are going to AND -, -. 72 05:16.460 --> 05:17.270 Hit okay. 73 05:18.530 --> 05:19.760 And now step over it. 74 05:20.660 --> 05:22.670 And you see the result is still 20. 75 05:22.670 --> 05:23.930 So it is correct. 76 05:26.120 --> 05:26.600 Okay. 77 05:26.600 --> 05:31.130 So this is how we perform AND operations using the AND operator. 78 05:31.160 --> 05:32.720 That's all for this video. 79 05:32.720 --> 05:34.130 Thank you for watching.