Appeal No. 2003-1430
Application No. 09/414,458
depends on a condition value. According to Appellant,
performing normal (non-vector) operations requires a simple
access mechanism to the registers which is undesirable to be
modified for vector operations to write back vector components
(specification, page 1). Appellant provides a multiplexer for
each field which is controlled by the condition data for that
field allowing for all fields of the result to be written back
(specification, page 2).
Representative independent claim 1 is reproduced as follows:
1. A data processor which uses storage units that are
subdivisible into predetermined fields for executing instructions
that cause the data processor to handle numbers from respective
ones of the fields separately, an instruction set of the
processor comprising a conditioned assignment instruction with
operand locations for addressing storage locations of a plurality
of address storage units, the data processor being arranged to
respond to the conditioned assignment instruction by executing a
respective operation for each field in parallel, the respective
operation for each particular field being conditioned by
respective condition data for that particular field,
characterized in that the data processor comprises for each
particular field a respective multiplexer, controlled by
condition data for that particular field, the multiplexer for
each particular field having
a first and second input coupled to a respective port for
receiving a content of that particular field in a first and
second storage location addressed by a first and second one of
the operand locations respectively, and
an output for supplying a multiplex output to that
particular field in a result of the conditioned assignment
instruction.
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Last modified: November 3, 2007