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====== Int 2FH, AX=4A05H, SI=02H ======

===== Version =====

?

===== Brief =====

Switch to previous task in Z order list

===== Input =====

	None
  
===== Return =====

    CF is reset - ok
    CF is set - error. Only one task in list

===== Notes =====

  Function switches Z order list so previus task in list become first, current become become second and so on.
  
===== See also =====