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Int 2F Fn B000  - DOS 3.3+ Graftabl.com - Installation Check               [V]

   AX = B000h

Return: AL = status
       00h not installed, OK to install
       01h not installed, not OK to install
       FFh installed

Notes: called by DISPLAY.SYS
   documented for DOS 5.0, but undocumented in prior versions

See Also: AX=B001h
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