1
James Letwin: Method and operating system for executing programs in a multi-mode microprocessor. Microsoft Corporation, Seed and Berry, October 18, 1988: US04779187 (104 worldwide citation)

Improved methods and operating systems for use with a multi-mode microprocessor enable efficient operation in a multi-mode environment. Preferred embodiments for use with microprocessors which were not designed to switch from each mode to another mode enable multi-tasking of a mixture of programs wr ...


2
James Letwin: Method and operating system for executing programs in a multi-mode microprocessor. Microsoft Corporation, Seed and Berry, April 25, 1989: US04825358 (78 worldwide citation)

Improved methods and operating systems for use with a multi-mode microprocessor enable efficient operation in a multi-mode environment. Preferred embodiments for use with microprocessors which were not designed to switch from each mode to another mode enable multi-tasking of a mixture of programs wr ...


3
James Letwin: Method and operating system for executing programs in a multi-mode microprocessor. Microsoft Corporation, Seed and Berry, June 25, 1991: US05027273 (71 worldwide citation)

Improved methods and operating systems for use with a multi-mode microprocessor enable efficient operation in a multi-mode environment. Preferred embodiments for use with microprocessors which were not designed to switch from each mode to another mode enable multi-tasking of a mixture of programs wr ...


4
James Letwin: Method and system for executing programs using memory wrap in a multi-mode microprocessor. Microsoft Corporation, Seed and Berry, October 1, 1996: US05561788 (25 worldwide citation)

Improved methods and operating systems for use with a multi-mode microprocessor enable efficient operation in a multi-mode environment. Preferred embodiments for use with microprocessors which were not designed to switch from each mode to another mode enable multi-tasking of a mixture of programs wr ...