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Resource Usage Report for tb 

Mapping to part: gw1n_4lqfp144-6
Cell usage:
ALU             123 uses
DFFC            299 uses
DFFCE           81 uses
DFFE            33 uses
DFFP            5 uses
FLASH256K       1 use
GSR             1 use
INV             3 uses
LUT2            82 uses
LUT3            105 uses
LUT4            238 uses

I/O ports: 36
I/O primitives: 36
IBUF           4 uses
OBUF           32 uses

I/O Register bits:                  0
Register bits not including I/Os:   418 of 3456 (12%)

@S |Mapping Summary:
Total  LUTs: 425 (9%)

