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Update sub/add/normalize/int conversion and adjacent functions from Microsoft BASIC#112

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rikardn wants to merge 24 commits intoMEGA65:masterfrom
rikardn:sgn_FAC1
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Update sub/add/normalize/int conversion and adjacent functions from Microsoft BASIC#112
rikardn wants to merge 24 commits intoMEGA65:masterfrom
rikardn:sgn_FAC1

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@rikardn
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@rikardn rikardn commented Feb 4, 2026

  • Update add_FAC2_FAC1
  • Add add_mantissas_FAC2_FAC1
  • Add overflow_error
  • Add shift_carry_into_FAC1
  • Add NORM2
  • Update normal_FAC1
  • Add zero_FAC1
  • Update add_MEM_FAC1
  • Update add_align_exponents
  • Update sub_FAC2_FAC1
  • Update sub_MEM_FAC1
  • Update mov_MEM_FAC2 and get_FAC2_via_INDEX
  • Update GIVAYF
  • Update convert_Y_to_FAC1
  • Update FCOMP
  • Update convert_i16_to_FAC1
  • Update convert_A_to_FAC1
  • Update sgn_FAC1
  • Update sgn_FAC1_A

@rikardn
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rikardn commented Feb 4, 2026

I think it is easiest to review this file by file rather than commit by commit.

With this PR we are 20% through the Microsoft BASIC (counting code lines)

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