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My First Assembly Tutorial on This Forum Posted by ForEverIslam on 2 Mar 2012 at 2:44 PM

+----------------------------------------------+
+ Author : Hamza Qdider +
+ Age : 18 years old +
+ Title of This Tutorial : CPU Architecture +
+----------------------------------------------+

Hi Guys ! I'm a new (beginner) in this forum . I'm from Morocco ,I'm 18 years old .
In this Tutorial ,I want to explain the CPU (Central Processing Unit ) Architecture ...
Firstly, I'm not sure that my English Language is correct ,because I'm a beginner in it too .
When we talk about CPU ,we can define it like a PC Heart . We'd better say : " The PC Brain "
not " The PC Heart ", it does a lot of operations ( addition ,division ,etc ...) . It diagnose many
information with an amazing speed .
All this advances are due to the technology developement over the last decades .
After this introductions ,I will start my explanation now :D

+ -------------------------------- +
1 - CPU Registers
+ ---------------------------------+
The CPU contains four General Purpose Registers ( I talk about 32 Bit Processor not 64 Bit ) .
Their size is 32 bit ( from 0 to 31 bit ) . Each register has divised in two part ( registers) , from 0 to 15 bit
and from 15 to 31 bit ,the part one ( 0 => 15 bit ) is divised in two part too ( from 0 to 7 bit and from 7 to 15 bit ),
look at this :
31 15 7 0
+++++++++++++++++ EAX ++++++++++++++++
+ +
++++++++++++++++++++++++++++++++++++++
+ AX +
++++++++++++++++
+ AH + AL +
++++++++++++++++

+-----------------------------------+
2 - The General Purpose Registers
+-----------------------------------+

EAX = Accumulator register ,It's size is 32 bit . It contains the AX Register ( 16 bit ) and AH (Accumulator High)
and AL (Accumulator Low) .

EBX = Base register ,It's size is 32 bit . It contains the BX Register ( 16 bit ) and BH (high register) & BL ( low register)

ECX = Counter register ,It's size is 32 bit . It contains the CX Register ( 16 bit ) and CH & CL ,we use this register
for making loops and so on ...

EDX = Data register ,It's size is 32 bit . It contains the DX Register ( 16 bit ) and DH & DL , we use this register
for puting our data in it . For example : put a message in DX ( mov dx,offset message).

In brief ,I want to give you this advice :D : " We usually use the EAX (AX) Register ,because it is the principal register hhhhhhhhhhhhhhh"

Eventually ,I want to say " I'm so sorry ,for my bad language ^_^ !!! " .

To Be Continued ...
Hamza Qdider

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Re: My First Assembly Tutorial on This Forum Posted by ForEverIslam on 2 Mar 2012 at 3:13 PM

Download this Tutorial :
http://www.mediafire.com/?z3lh9as8s9w6434

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Re: My First Assembly Tutorial on This Forum Posted by ForEverIslam on 2 Mar 2012 at 3:18 PM

Download this Tutorial :

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