as: Z80 Options

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1 9.56.1 Options
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1 
1 The Zilog Z80 and Ascii R800 version of 'as' have a few machine
1 dependent options.
1 '-z80'
1      Produce code for the Z80 processor.  There are additional options
1      to request warnings and error messages for undocumented
1      instructions.
1 '-ignore-undocumented-instructions'
1 '-Wnud'
1      Silently assemble undocumented Z80-instructions that have been
1      adopted as documented R800-instructions.
1 '-ignore-unportable-instructions'
1 '-Wnup'
1      Silently assemble all undocumented Z80-instructions.
1 '-warn-undocumented-instructions'
1 '-Wud'
1      Issue warnings for undocumented Z80-instructions that work on R800,
1      do not assemble other undocumented instructions without warning.
1 '-warn-unportable-instructions'
1 '-Wup'
1      Issue warnings for other undocumented Z80-instructions, do not
1      treat any undocumented instructions as errors.
1 '-forbid-undocumented-instructions'
1 '-Fud'
1      Treat all undocumented z80-instructions as errors.
1 '-forbid-unportable-instructions'
1 '-Fup'
1      Treat undocumented z80-instructions that do not work on R800 as
1      errors.
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1 '-r800'
1      Produce code for the R800 processor.  The assembler does not
1      support undocumented instructions for the R800.  In line with
1      common practice, 'as' uses Z80 instruction names for the R800
1      processor, as far as they exist.
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