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 1111011w     mod,111,r/m      disp (0, 1, or 2)
──────────────────┬─────────────────────┬───────────────────────────────────
 IDIV  reg        │ idiv  bx            │ 88/86 b=101-112,w=165-184
                  │ div   dl            │   286 b=17,w=25
                  │                     │   386 b=19,w=27,d=43
                  │                     │   486 b=19,w=27,d=43
──────────────────┼─────────────────────┼───────────────────────────────────
 IDIV  mem        │ idiv  itemp         │ 88/86 (b=107-118,w=171-190)+EA*
                  │                     │   286 b=20,w=28
                  │                     │   386 b=22,w=30,d=46
                  │                     │   486 b=20,w=28,d=44
──────────────────┴─────────────────────┴───────────────────────────────────
  * Word memory operands on the 8088 take (175-194)+EA clocks.
                                    -♦-