4.14 Assembly Laungage

• Programming language that allows the use of mnemonics in place of binary/hex  machine language
• Assember - program that allows computer to convert assembly language to machine language
• Full blown assembler - take a source code file that produce both object code file and list file
• object code file contains the source code 
• list file is a text file that contain source code instruction and any error messages found
• One-line assembler - convert one line of source code at a time into machine language
• Assembly language requires knowledge of
• registers and instruction set of the MPU
• address modes of the MPU
• Assembly languages are not portable - program written for one type of MPU will generally not run on another MPU