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C after CMPS/CMPSX/ADDS/ADDSX/SUBS/SUBSX - Page 6 — Parallax Forums

C after CMPS/CMPSX/ADDS/ADDSX/SUBS/SUBSX

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Comments

  • evanhevanh Posts: 11,054
    I'd still be interested in also having test and set versions of all those test and jumps.
  • TonyB_TonyB_ Posts: 1,728
    edited 2017-12-18 23:21
    DJZ/DJNZ and TJZ/TJNZ are complementary and have the same last letter.
    DJU/DJNU and TJF/TJNF are complementary and have different last letters, which makes no sense. U for underflow is plain wrong here anyway as decrementing from $8000_0000 causes an underflow, not from zero. I like F for Full or $FFFF_FFFF or F's and DJU/DJNU should be renamed DJF/DJNF.
  • cgraceycgracey Posts: 13,610
    TonyB_ wrote: »
    DJZ/DJNZ and TJZ/TJNZ are complementary and have the same letter Z.
    DJU/DJNU and TJF/TJNF are complementary and have different letters, which makes no sense. U for underflow is plain wrong here anyway as decrementing from $8000_0000 causes an underflow, not from zero. I like F for Full or $FFFF_FFFF or F's and DJU/DJNU should be renamed DJF/DJNF.

    You're right!

    I'll rename DJU/DJNU to DJF/DJNF.
  • TonyB_TonyB_ Posts: 1,728
    edited 2017-12-18 23:26
    cgracey wrote: »
    TonyB_ wrote: »
    DJZ/DJNZ and TJZ/TJNZ are complementary and have the same letter Z.
    DJU/DJNU and TJF/TJNF are complementary and have different letters, which makes no sense. U for underflow is plain wrong here anyway as decrementing from $8000_0000 causes an underflow, not from zero. I like F for Full or $FFFF_FFFF or F's and DJU/DJNU should be renamed DJF/DJNF.

    You're right!

    I'll rename DJU/DJNU to DJF/DJNF.

    Thanks, Chip. I think that was my final comment on DJx/IJX/TJx.
  • cgraceycgracey Posts: 13,610
    Thanks for pointing that out. I should have realized, myself. That was ugly.
  • Ugly with a capital U! :)
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