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For completing all the tasks, an assembler needs some hints from the programmer, i.e. the required storage for a particular constant or a variable, logical names of the segments, types of the different routines and modules, end of file, etc. These types of hints are given to the assembler using some predefined alphabetical strings called assembler directives, which help the assembler to correctly understand the assembly language programs to prepare the codes.
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What do you mean by directives?
For completing all the tasks, an assembler needs some hints from the programmer, i.e. the required storage for a particular constant or a variable, logical names of the segments, types of the different routines and modules, end of file, etc. These types of hints are given to the assembler using some predefined alphabetical strings called assembler directives, which help the assembler to correctly understand the assembly language programs to prepare the codes.
What is psuedocode used for?
Assembler directives are also known as pseudocode.It is instruction to assembler regarding the program to be assembled. For example ORG 4000 is an assembler directive which tells the assembler that program is stored from location 4000.
What are the disadvantages of writing programs with 'in-line assembler' directives?
The simple answer is that the resulting program is not portable.
What is the Difference Between Assembler directives and instructions of 8800 microprocessor?
Assembler directives are commands in assembly language that instruct the assembler on how to process the program, such as defining data segments or reserving memory, but they do not translate into machine code or executable instructions. In contrast, instructions of the 8800 microprocessor are actual commands that the processor executes, such as arithmetic operations or data movement. While directives guide the assembly process, instructions perform the operations that the CPU executes. Essentially, directives help in organizing and managing code, while instructions carry out the program's functionality.
Assembler directives in microprocessor?
Manual coding of 8086 is difficult hence we use a assembler or a compiler. Note that the microprocessor should be able to interpret your discussions via the program. Suppose if the instruction corresponds to word(16 bits), we use assembler directive WORD PTR, but when assembler is contacting the processor it sets a bit called 'w' indicating its a byte operation.
What do you mean by directive?
For completing all the tasks, an assembler needs some hints from the programmer, i.e. the required storage for a particular constant or a variable, logical names of the segments, types of the different routines and modules, end of file, etc. These types of hints are given to the assembler using some predefined alphabetical strings called assembler directives, which help the assembler to correctly understand the assembly language programs to prepare the codes.
What does advance directives mean?
what does advance directives mean
What are Different types of assembly language statements?
The three types of assembly language are: 1. Imperative: indicates an action to be performed. 2. Declaration 3. Assembler Directives
Where can you get an assembler?
One well known and good assembler is NASM. (Netwide ASseMbler). This can be found at http://nasm.sf.net
What is the Difference between cross assembler and resident assembler?
An assembler which runs on a computer for which it produces object codes
Could assembler decide for itself which instructions need to be assembled using extended format?
No, an assembler cannot independently decide which instructions to assemble using extended format. The choice of instruction format is typically dictated by the architecture and the specific instruction set being used, which detail when extended formats are necessary. The assembler relies on predefined rules and the input code provided by the programmer to determine how to assemble instructions correctly. Any ambiguity in instruction format must be resolved by the programmer through proper coding practices or directives.
What is an absolute assembler?
An absolute assembler is a computing term for an assembler which generates code which uses only absolute addresses.
