[SOLVED] Using SETINDx with REPS, a little gotcha.

Comments

• ozpropdev Posts: 2,791

  2014-02-01 16:50 edited 2014-02-01 16:50

  jmg wrote: »

  Can't they both be right ?
  The 16 bit field has no 0 mapping, so the number is 1..2^16, instead of 0..2^16-1 ?

  
  The old instruction set used the Z effect bit in REPS as the 17th bit.
  Last time I checked 2^16 = 65536 not 131072.
  
  Edit: PNUT only allows 1 to 65536 as values for REPS
• jmg Posts: 15,144

  2014-02-01 19:52 edited 2014-02-01 19:52

  I think your highlights of blue and green text are OK, and the red is a simple cut/paste legacy typo.
  When reading such texts, I tend to ignore the comments above the opcodes, and skip to the opcode encoding, but for accuracy the comments should ideally match the opcode lines they refer to.
  Fix : trim n_ you have in red ?
• potatohead Posts: 10,253

  2014-02-01 22:14 edited 2014-02-01 22:14

  Personally, I tend to read what others contribute, try and understand their intent and work from there, but that's just me.