Int 2F/AX=B000h

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=2300h - AX=2E00h - AX=B001h

Category: Video - Int 2Fh - D