Executing programs of a first system on a second system

Details Executing programs of a first system on a second system Executing programs of a first system on a second system

G - Physics

06

F

G06F 9/45 (2006.01) G06F 1/00 (2006.01) G06F 9/455 (2006.01) G06F 13/10 (2006.01) G06F 21/00 (2006.01)

Patent

CA 2132900

An emulator executes on a second data processing system as a second system user level process including a first system user level program, a first system executive program, and first system user and executive tasks. An emulator level is interposed between the second system user level process and a kernel level and contains pseudo device drivers. Each pseudo device driver corresponds to a first system input/output device. The kernel level includes kernel processes, each kernel process corresponding to a pseudo device driver. The second system hardware platform includes a plurality of second system input/output devices, wherein each second system input output device corresponds to a kernel process. Each combination of a pseudo device driver, a corresponding kernel process and a corresponding second system input/output device executes in a second system process and emulates the operations of a corresponding first system input/output task and the corresponding first system input/output device. The pseudo device drivers are constructed of a plurality of pseudo device queues, a return queue and a queue manager.

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