as: Z80 Options
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1 9.56.1 Options
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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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