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80
Assembly Language Fundamentals
the calling procedure could be changed to -
TMP
iement
and you save a word of code: the effect is otherwise the same. Check the exit conditions for a
utility before using this approach.
Utilities which you use in a module must have their names in an EXT pseudo-instruction for that
module. Otherwise, the assembler is unable to tell that you meant a utility and not one of your
own labels, causing an "undefined reference" assembly error.
Appendix F contains a short description of the utilities and has cross-references to the location
in the manual of the full discussion on each utility.
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