In a message to All Sylvain Lauzon wrote:
SL> Function AL = 00
SL>          AH = 00  DOS 2.x PRINT.COM (undocumented, see note below)  
SL>             01  PRINT  (undocumented behavior also, see note below) 
SL>         on return:
SL>         AL = 00  not installed, ok to install
SL>            = 01  not installed, do NOT install
SL>            = FF  installed
SL>  I installed PRINT in memory tried AH=00, it returns AL=01
SL>  " "         "     "  "      "     AH=01, it returns AL=FF
SL>  What AL=01 really mean?? If I believe these statements, it says
SL> "not  installed"  but its totaly untrue!
Right -- and it advises you _not_ to try installing it, presumably  because
you're running a verson of DOS Later than 2.x
Use AH=01 for later versions, and as you've found, it returns FF for PRINT
installed.
         Cheers,
           Rich
http://www.netside.net/~rveraa/
---------------