What are the steps in developing an assembly language program?

Answer 1

Assembly language uses mnemonic code, abbreviations for machine instructions using a human readable and memorable form. This make it much more readable to humans. For example, one instruction may be called Add, another one may be called Move.

These elements are called Machine Code Instruction(s).

Machine instructions and their corresponding mnemonic codes are defined for each processor, and are generally unique for each processor family.

In addition to mnemonic codes for machine instructions, assembly languages also support directives and pseudo instructions.

Directives are used to instruct the assembler how to assemble code. For example, a directive might say "the following code will reside in immutable memory (ROM)," another directive might say "the following code will start at a fixed memory location of address 12345." Examples for directives include common directives such as SEG and ORG. However, the syntax and set of directives are defined by the assembler program and are not standardized.

Pseudo-instructions are used to control conditional assembly (e.g. IF, ELSE, ENDIF), definition and use of macros, and other tools that allow efficient programming in assembly.

Answer 2

The fields of an assembly language line (operation or pseudo-operation) are:

1. label
2. mnemonic for opcode
3. operands
4. comment

Some advanced assembly languages may provide subfields, options, and/or qualifiers on these fields (e.g. .B, .W, .L qualifiers on mnemonic to specify operand size). If these subfields can result in very long lines the assembler will usually provide a mechanism to continue the current line onto the next for readability.

Answer 3

A symbolic instruction followed by any operands required by that instruction. The instruction determines how many operands (if any) are required and the type of the operands that are expected.

Answer 4

Right the same as in any other language:

Specification.

Design.

Implementation.

Testing.

Answer 5

1.Synthesis Phase

2.Analysis Phase

Answer 6

1. Developing the problem

2. Algorithm

3. Flowchart

4. Initialising checklist

5. Choosing instruction

6. Converting algorithm to ALP