Get Installed State

Input

Output
AX CBh 00h   Installed State AX
BX         BX
CX         CX
DX         DX 
  Get Installed State (00H) detects whether the Resident Manager is
  currently installed.

Installed State: 00h = Not Installed
                 01h = Not Installed, Not OK to Install
                 FFh = Installed

See Also 0Eh 0Fh 10h 11h 12h 13h 16h Error Codes


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