Appeal No. 96-3494
Application 08/160,299
This is a decision on the appeal under 35 U.S.C. § 134
from the examiner's final rejection of claims 1-34, which
constitute all the claims in the application. Appellants have
indicated that the appeal is withdrawn with respect to claim
34 [brief, page 2]. Accordingly, this appeal now involves
only claims 1-33.
The claimed invention pertains to a data processing
apparatus having an arithmetic logic unit (ALU) with three
separate multibit digital inputs. The ALU performs mixed
arithmetic and Boolean operations on the three inputs. A
barrel rotator is connected to one of the three inputs for
rotating the digital signal received at that input. A
function control input to the ALU determines which operations
will be performed on the three multibit digital inputs
received by the ALU.
Representative claim 1 is reproduced as follows:
1. A data processing apparatus comprising:
an arithmetic logic unit having first, second and
third data inputs for multibit digital signals representing
corresponding first, second and third input signals, and a
function control input signal for receiving a function signal,
said arithmetic logic unit generating at an output a multibit
digital signal representing a mixed arithmetic and Boolean
combination of said first, second and third inputs
2
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