Appeal No. 96-1539
Application No. 08/128,456
The invention is directed to an emulator for emulating a
first system on a second system wherein mechanisms on the
second system appear to the programs and tasks of a first
system to be mechanisms of the first system.
Representative independent claim 1 is reproduced as
follows:
1. An emulator for emulating a first data processing
system on a second data processing system, the first data
processing system including a user level, an executive level,
an input/output level and a hardware platform, the user level
including at least one user program and at least one executive
program for managing operations of the first data processing
system and the hardware platform including a plurality of
first system input/output devices, including a first system
memory, the executive level including at least one user task
performing user level program operations and at least one
executive task performing executive program operations, the
user and executive tasks generating requests for first system
input/output operations, the input/output level including a
plurality of input/output tasks, each input/output task
corresponding to a first system input/output device and
performing input/output operations in response to the
input/output requests and each first system input/output
devices performing input/output operations in response to the
corresponding input/output task, the emulator executing on the
second data processing system and comprising:
a second system user level process executing in a user
level of the second data processing system, the second system
user level process including
the first system user level program,
the first system executive program, and
the first system user and executive tasks,
2
Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Next
Last modified: November 3, 2007