CS-224 Computer Organization Lecture 07

[@Hancok66]

I'm doing Computer Organization in UFSC - Brazil and my teacher doesn't have any recording of his classes, but this channel right here have everything I see on my classes but RECORDED! You explain almost the same way as my teacher, i'm happy to finally find a recorded class of this patterson book, I was needing a lot to understand some things and couldn't do it just by myself because I can't review my own classes, you are a hero

[@ISLAMguidanceful]

i love this professor already, mind you iam watching this because i hated my comp arch professor from the second lecture and never went back

[@sgermain06]

"Linked lists: don't worry, we'll save you that pain until a little later." Lol!

[@aquaizzy]

He does NOT care! breaking all the limits. He will write wherever!! WHENEVER!!

[@follklor9976]

great lecture

[@vincecs]

This is so good

[@Karim-ud9kl]

You're the best

[@wristocrat]

boss mode activated at 2:50

[@studentcommenter5858]

NORing with 0 inverts. That is cool. But what about NORing with 1 always leads to 0. What should one do to invert only a specific set of bits?

[@nutellarutsche6971]

i know your comment is a couple months old, but im still doing this because its a kind of training fo me. imagine you want to invert first byte of t0: andi $t1, $t0, 0xff //mask first byte out nor $t1, $zero //invert the masked out stuff lui $t2, 0xffff ori $t2, 0xff00 //create mask to clear old stuff in t0 first byte and $t0, $t0, $t2 //apply it or $t0, $t0, $t1 //puit inverted byte back

[@ahmedakef]

do AND mask to get only the bits you want: y = x AND 0x00001100 invert it: y = ^y do reverse AND mask to clear the bits you reverted: x = x AND 0x11110011 or the two variables : x = x OR y

[@mustafaturgut9930]

​​@@ahmedakefCORRECTING YOUR SOLUTION : y = x or 0x11110011 , y = y' , x = x and 0x11110011 , x = x or y

[@xx03_p19]

8:50 He's starting to get annoyed as the students seem to struggle a little bit. lol I think that many of these students aren't native english speaker they will be ok after review the notes but he's actually a very good teacher!

[@ganpangyen4444]

super super super ..... bleeeeeeeeerrrrrrr...beer beer super super..... I found it so fun not understanding Turkish while learning with the video hahaha

[@mohitdaga2356]

The guy is a gem,knows Hindi as well,I am very sure of it,at 7:12 he said "BARBAAD" which roughly translates to "In vain/Futile" and in of the previous lectures he used "YANI",which translates to "that is/i.e.". Prof. is one of a kind.

[@y09i_]

And "berbat" is of Persian origin, another influential language.

[@studentcommenter5858]

Holy shit! This comment thread must be used for linguistic research. LOL jk.

[@AAZinvicto]

to add more to this thread, he's also using "siffer" for 0 which is also used in Urdu

[@abdelrahmanyasser5720]

siffer is arabic lang

[@kevivarma2759]

You think he switched from English/Turkish to Hindi randomly? Wtf lmao

[@MohamedLamineDiakhate-w9i]

for anybody who did the exercise please can you show answer?

[@sgermain06]

I'm curious to see if anyone has the answer to the homework he posted. I came up with 8 operations to get to the result he asked, but I wonder if there's a more efficient way to do it.

[@emreduman225]

How did you do it with 8 operations? I did it with 9 operations even without doing operations in first byte. You sure that you loaded to registers and stored back to the memory? (3 load , 3(nor,and,or), 3 store )

[@KevinIrungu23]

Original 32-bit piece of data in $t1: 0110 0011 1111 0000 0101 0110 0101 0001 Desired 32 bits: 0110 0011 0000 1111 0000 0000 1111 1111 Operations: andi $t0, $t1, OxFF000000 ori $t0, $t0, Ox000F00FF @@emreduman225

[@mustafaturgut9930]

sample solution to the given exercise : y = x or 0x1111000011111111, y = y', x = x and 0x1111000000001111, y = y or 0x0000000000001111, x = x or y