Assembly Language Programming Tutorial – 27 – LOOP Instruction

All references in this video came from:
Assembly Language for x86 Processors (6th Edition) http://goo.gl/n3ApG

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Rasim from Rasmurtech.com give us another tutorial on Assembly Language Programming . In this tutorial Rasim talks about the LOOP Instruction and shows us how to use it.

Download:

emu8086: http://goo.gl/AXgw2u

ASCII TABLE: http://goo.gl/qDqYDw

Wiki Answsers: Explain 8086 flag register http://wiki.answers.com/Q/Explain_8086_flag_register

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Comments

Fatin Bahari says:

“error A2075: jump destination too far : by 145 byte(s) ” – Whats does it mean by that? What should i do

Mohan T says:

why should Cx register become 0 to end the loop when you passing the value to dl …how does the loop end without any condition operator 

Andrew Patterson says:

Any chance you could do a loop tutorial without using “.code?” 

Shine Irvin says:

add dl,48
it supposed to do 48 + 5 right ?
can anyone explain ?
newbie here

Bogdan Vidrean says:

Hello,Rasim!

Is there any possibility to have an imbricated loop inside another loop(like a while in while).I have to write a program which builds a third array containing the result of a difference between two sets and I think that the only way to solve it is to search for every element from the first set in the second and set and if it is not there than I’ll add it in the third set.Btw awesome video.I learned more in 4 minutes than 6 hours with my teachers .Thank you!

Wakia says:

Great!
Thanks a lot Rasim….

prettybeast says:

hey this is a bit outdated, but can you can explain how I should print a letter? like five times? I dunoo what to add in dl. vertically

Frozen Flame says:

Why not just use JMP?

Modern Gamer says:

Why add dl , 48 …?

Antonieta.Bonifacio says:

Why Cx and not Ax or Bx ?

Balin 91 says:

these videos are life saving …
thank you so much..

Sam EH says:

Hello. I got a quick question. How do i make my loop look like : 55  55 
so the other will disapper while it keeps running ?

CobraL0rd says:

An important detail to add here is that

the LOOP instruction (and all the similar LOOP instructions you’ll see later in this playlist) FIRST decrements CX by 1
and afterwards checks the value of CX to see if it will loop or not.

Note this!

Stinkyfinger says:

thanks m8

professorlamp says:

So glad I’ve found this channel 😀

Nour says:

another excellent tutorial … thanks a million for your time and effort ^ ^

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