qa.hlp (Table of Contents; Topic list)
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Int 2FH Function 06H
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  Description:  ASSIGN     DOS 3.2 Only
 
  Returns a code indicating whether the resident portion of the ASSIGN
  utility has been loaded.
 
  Input                           Output
  ════════════════════            ════════════════════════════════════════
  AH=06H                          If function successful
  AL=subfunction                  Carry flag=clear
     00H=Get Installed            AL=ASSIGN installed status
      State                          00H  if not installed, ok to install
                                     01H  if not installed, not ok to
                                           install
                                     FFH  if installed
                                  If function unsuccessful
                                  Carry flag=set
                                  AX=error code
                                    -♦-