Question

assembly language class

I have some confusing can you answer me a couple question?

What are the basic types of data? How many bits does each on us?

Know the basics of moving data from memory to registers?

What happens in the registers when data is moved/added?

thank you

Answer 1

An assembly language is a low level programming language .

The basic data types are

• Integer data types
• Integer data types are very useful in assembly languages.
• BYTE
• SBYTE
• WORD
• SWORD
• FWORD
• QWORD

Bytes are 8 bit un signed number,sbytes are 8 bit signed integer number,word is 16bit unsigned,sword is 16 bit signed integer,and fword is 48 bit integer and Qword is 64 bit integer etc.

We must also understood the basic information about the memory includes as follows,

1. 1000 bytes = 1 Kilobytes(KB)
2. 1000 KB = 1 megabyte (MB)
3. 1000MB = 1 Gigabyte(GB)
4. 1000 GB = 1 Terabyte(TB)
5. 1000 TB = 1 Petabyte(PB

moving data from memory to registers is also important in assembly languages.these are a types of instructions move data from one location to another. Data movement instructions have the greatest options for addressing modes,and addressing modes are also helps in moving data from memory to registers.

• load - instruction loads a register from memory.
• store- instruction stores the contents of a register into memory.
• MOV is useful for transferring data to registers.
• LDA,LDX,STA,STX etc are widely used methods for moving data from memory to register.

when data is moved/added the register must save the value or location of that data.These are usual in assembly process.

By moving or adding data from memory to register there using various addressing modes like

• immediate

• Direct
• Indirect
• Indexed

i hope these informations are helpful for you.God bless you friend...