Description

How do I lock four SRL16 components into one CLB?

Solution

You can do this by instantiating four SRL16 components in the ".ucf" file, as these components are primitives.

For example:

#### UCF file created by Project Navigator

INST "I7" HU_SET= GROUP1;

INST "I8" HU_SET= GROUP1;

INST "I7" RLOC=R0C0.S0;

INST "I8" RLOC=R0C0.S0;

INST "I11" HU_SET= GROUP1;

INST "I12" HU_SET= GROUP1;

INST "I11" RLOC=R0C0.S1;

INST "I12" RLOC=R0C0.S1;

INST "I11" RLOC_ORIGIN=R10C4;

In the above example:

- The last line is optional

- I7, I8, I11, and I12 are the four SRL16 components