Preparing/Executing a Program

• mémoire
• mémoire - matière potentielle : model for a program
• mémoire - matière potentielle : models
• exposé
• mémoire - matière potentielle : address
• mémoire - matière potentielle : model
• mémoire - matière potentielle : segments
• mémoire - matière potentielle : data
• mémoire - matière potentielle : masm

1Preparing/Executing a Program Text Editor Source Code File Compiler Assembler (object) File Listing File Assembler Linking Library executable File map File Assembler File Listing File executable File Loader Physical Memory MASM 8086 Instruction - Basic Structure Label Operator Operand[s] ;Comment Label - optional alphanumeric string 1st character must be a-z,A-Z,?,@,_,$ Last character must be : Operator - assembler language instruction mnemonic an instruction format for humans assembler translates mnemonic into hexadecimal opcode example mov is f8h Operand[s] - 0 to 3 pieces of data required by instruction can be several different forms delineated by

• source file defines
• program halt function int
• data segment start address mov
• end of procedure page
• assembler
• data segment register mov
• stack
• memory
• code
• data