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7. Extended specifications of C Compiler

To conform the program description of built-in equipment, extended language specifications are details below.
When executing programs, extended language specifications need to use effectively.

This content describes the extended language specifications supported by the Softune C Compiler.

• Assembler description of using "_asm" statement
  Example: _asm("MOV A,#00H" )
• Extended type qualifier
  _near
  _far
  _io
  _direct
  _interrupt
  _nosavereg
• Extended functions of using "#pragma" statement
  #pragma asm/endasm
  #pragma inline
  #pragma section
  #pragma segment
  #pragma ilm/noilm
  #pragma register/noregister
  #pragma ssb/nossb
  #pragma except/noexcept
  #pragma intvect
  #pragma defvect
• built-in functions of interrupt control
  _DI()
  _EI()
  _set_il()
• Other built-in functions
  _wait_nop()
  _mul()
  _mulu()
  _div()
  _divu()
  _mod()
  _modu()

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