Appeal No. 1997-2212 Page 9
Application No. 08/233,387
architecture-dependent. “As shown in FIG. 1, an application
program 10, written in source code,” col. 5, ll. 43-44, is the
higher-level source code. “As [also] shown in FIG. 1, the
application program 10 can be migrated to the Y executable
code 22 in either an indirect path 24 or a direct path 26.”
Col. 6, ll. 1-3. The examiner has not shown that either of
these techniques teaches or would have suggested decompiling
executable machine code into higher-level source code that is
architecture-independent.
Direct migration comprises compiling and linking the
higher-level source code “with the use of a Y compiler 28 and
a Y linker 30.” Id. at ll. 4-5. The compiling and linking
produce a “resultant Y executable code ... designated by the
reference numeral 22B.” Id. at ll. 5-6. The Y executable
machine code is architecture-dependent. Specifically, the
executable machine code “employ[s] a Y instruction set to
which the hardware architecture of the Y computer system 20 is
adapted.” Col. 5, ll. 53-55. “[A]s specifically indicated
for illustrative purposes in FIG. 1, ... the Y system can
employ a reduced instruction set architecture called the RISC
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