Appeal No. 96-1422
Application 08/048,339
We reverse the rejection of claims 6 to 12 under 35
U.S.C.
§ 103.
As the title of the application reflects, the disclosed
and claimed invention relates to a method to reduce control
store space in a VLSI central processor integrated circuit
chip which has been pipelined. There are a plurality of read
only memory (ROM) control stores utilized to implement the
microprogrammed execution unit. The control words of the
control stores have
been subdivided into primary nanocontrol words and secondary
nanocontrol words, where certain ones of the secondary
nanocontrol words have been specified as being in a “guarded”
field or a “don’t care” field. Clause D of each independent
claim 6 and 12 on appeal relates to the combining of first and
second secondary nanocontrol words into a single secondary
nanocontrol word based upon specifically recited conditions or
relationships among these various “guarded” and “don’t care”
control fields.
Essentially, none of these very specific features of the
disclosed and claimed invention are found in either of the
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