Assembly Language Questions Medium
During assembly, several types of errors can occur. These errors can be categorized into three main types:
1. Syntax Errors: These errors occur when the assembly code does not follow the correct syntax or grammar rules of the assembly language. Syntax errors can include missing or misplaced punctuation, incorrect register or variable names, or incorrect instruction format. These errors are usually detected by the assembler during the assembly process and are displayed as error messages.
2. Semantic Errors: Semantic errors occur when the assembly code is syntactically correct but does not make logical sense. These errors can include using an incorrect opcode or operand, attempting to perform an invalid operation, or referencing an undefined label or variable. Semantic errors are often more difficult to detect as they require a deeper understanding of the assembly language and the intended functionality of the code.
3. Linking Errors: Linking errors occur when multiple assembly modules or object files are combined to create an executable program. These errors can include unresolved external references, duplicate symbols, or incompatible object file formats. Linking errors are typically detected by the linker during the linking phase and are displayed as error messages.
It is important to carefully review and debug the assembly code to identify and correct these errors before attempting to execute the program.