Appeal No. 1999-0133
Application No. 08/459,570 Page 2
BACKGROUND
Appellants’ invention relates to a programmable optimized-
distribution logic allocator for a high-density complex
programmable logic device (PLD). An understanding of the
invention can be derived from a reading of exemplary claim 1,
which is reproduced as follows:
1. A method for distributing product terms from a
programmable array in a very high-density CPLD to logic in said
very high-density CPLD, said method comprising:
coupling each product-term cluster in a plurality of
product-term clusters to a different input line of a programmable
logic allocator;
configuring said logic allocator so that each output line of
said logic allocator has programmable access to a first
predetermined number of product-term clusters in said plurality
of product-term clusters;
wherein said first predetermined number of product-term
clusters includes at least twenty product terms; and
upon programmably connecting a product-term cluster to an
output line of said logic allocator, said connected product-term
cluster is disconnected from all remaining output lines of said
logic allocator.
The prior art reference of record relied upon by the
examiner in rejecting the appealed claims is:
Ha et al. (Ha) 5,136,188 Aug. 4, 1992
Agrawal et al. (Agrawal) 5,225,719 Jul. 6, 1993
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