Abstract: The specification discloses a combination cruising top and storage cover for a boat of the kind having a deck disposed between fore and aft ends of the boat, the deck including a passenger area, the combination cruising top and storage cover comprising at least first and second cover portions selectively pivotally moveable towards each other and into a first, raised configuration, wherein the at least first and second cover portions are arranged vertically adjacent each other in generally lapped relation to define a cruising top for a boat, and selectively pivotally moveable away from each other and into a second, lowered configuration, wherein the at least first and second cover portions are each positioned vertically lower than in the first, raised configuration and arranged generally horizontally in substantially end-to-end relation to thereby define a storage cover for covering at least a portion of a boat's deck.

Abstract: The invention provides a method and apparatus for switching between execution of a plurality of object code types having different conventions for invoking program procedures and performing stack manipulations. The invention may also be used to switch between different calling conventions within a single object code type. Briefly according to the invention, a computer system comprises a routine descriptor, a stack switch frame, a mode switching mechanism for switching from a first processor, code or calling convention type to a second processor, code or calling convention type and means for executing instructions in various code types. A routine descriptor describes a program or code segment and its code type and calling conventions. A routine descriptor contains, among other information, a “mixed mode” field which is set to a specific, predetermined value such as a value indicating an instruction which is not legal in the runtime environment of a first processor, code or calling convention type.

Abstract: The invention provides a method and apparatus for switching between execution of a plurality of object code types having different conventions for invoking program procedures and performing stack manipulations. The invention may also be used to switch between different calling conventions within a single object code type. Briefly according to the invention, a computer system comprises a routine descriptor, a stack switch frame, a mode switching mechanism for switching from a first processor, code or calling convention type to a second processor, code or calling convention type and means for executing instructions in various code type codes. A routine descriptor describes a program or code segment and its code type and calling conventions. A routine descriptor contains, among other information, a "mixed mode" field which is set to a specific, predetermined value such as a value indicating an instruction which is not legal in the runtime environment of a first processor, code or calling convention type.