Embedded Systems: An Integrated Approach by Pearson

364 EMBEDDED SYSTEMS

10.13.3 | The END Directive

 is directive tells the assembler to stop reading. Anything written after the END

directive will be ignored by the assembler. So every assembly language source module

must fi nish with an END directive, on a line by itself.

10.14 | General Structure of an Assembly Language Line

 e general form of source lines in assembly language is:

{label} {instruction|directive|pseudo-instruction} {;comment}

Some points to keep in mind are listed as follows:

i) Instructions, pseudo-instructions and directives must be preceded by a white space,

such as a space or a tab, even if there is no label.  is means that they should not be

written in the label space (extreme left of the line).

ii) Instruction mnemonics ...