Important Notice

The pages on this site contain documentation for very old MS-DOS software, purely for historical purposes. If you're looking for up-to-date documentation, particularly for programming, you should not rely on the information found here, as it will be woefully out of date.

   ◄Key to Timings►  ◄EA Calculation►  ◄Back►  ◄Contents►
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  Timings shown sometimes use the symbols described below:
 
  EA        Effective address calculation time. See EA Calculation screen.
 
  b,w,d     Byte, word, or doubleword operands.
 
  pm        Protected mode.
 
  n         Additional time per each iteration (repeated instructions only).
 
  noj       No jump. Timing of instruction if conditional jump not taken.
 
  m         Time per byte of next instruction. On 80386, data and displace-
            ment each count as one byte for purpose of this calculation.
 
  W88       Time taken by 8088 processor when operand is a word.
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