US 11,106,846 B1 · Systems and methods for emulation data array compaction

Abstract

A compaction circuit in an emulation system may store in a data array emulation data that may be read in subsequent emulation steps. For each emulation step, the compaction circuit may receive keeptags from a local control store word of the emulation step and store portions of emulation data identified by the keeptags. The keeptags in the control store words may be inserted by a compiler based upon whether a corresponding read port of emulation processor reads the stored data in the subsequent steps. The compaction circuit may also translate the logical read address of the stored data to a physical read address in the shared data array. A dynamic modification engine may enable dynamic modification of netlists while using the compacted data array. In response to a request, the dynamic modification engine may modify one or more keeptags and update read addresses in the control store words.

Claims20

Dependent claims

A method of compacting data in a logic emulator comprising:

generating, by an emulation processor cluster in the logic emulator, a set of data be stored in a shared data array at an emulation step of emulating a device under test;
extracting, by a compaction circuit in the logic emulator, a set of keeptags added to a control store word corresponding to the emulation step and added by a compiler during a compilation of the device under test;
generating, by the compaction circuit, a set of compacted data comprising bits in the set of data as identified by the set of keeptags;
calculating, by the compaction circuit, physical addresses in the shared data array for the set of compacted data;
writing, by the compaction circuit, the set of compacted data at the corresponding physical addresses in a shared memory array;
and
reading, by at least one emulation processor in the emulation processor cluster, at least one bit of the set of compacted data stored in the shared data array in a subsequent emulation step.

4 more elements

A logic emulator comprising:

an emulation processor cluster configured to generate a set of data to be stored in a shared data array at an emulation step of emulating a device under test;
a compaction circuit configured to:
extract a set of keeptags added to a control store word corresponding to the emulation step and added by a compiler during a compilation of the device under test;
generate a set of compacted data comprising bits in the set of data as identified by the set of keeptags;
calculate physical addresses in the shared data array for the set of compacted data;
write the set of compacted data at the corresponding physical addresses in a shared memory array;
and
at least one emulation processor of the emulation processor cluster configured to read at least one bit of the set of compacted data stored in the shared data array in a subsequent emulation step.

5 more elements

Dependencies are inferred from the claim text.

Systems and methods for emulation data array compaction

Life of this patent

Systems and methods for emulation data array compaction

Life of this patent

Abstract

Claims20