公开(公告)号：US20240296269A1

公开(公告)日：2024-09-05

申请号：US18178463

申请日：2023-03-03

Applicant: Cadence Design Systems, Inc.

Inventor： Mitchell G. Poplack ,  Bhoumik Shah ,  Jennifer Lee

IPC: G06F30/3308

CPC classification number: G06F30/3308

Abstract: The systems and methods described herein include emulators that implement wrappers comprising instrumentation logic for the emulator components (e.g., memories) to perform certain memory-related functions. These functions allow the physical binary memories of the emulator to behave as a ternary memory. The memory wrappers include instrumentation logic around logic of the physical binary memories. In some cases, embodiments generate the wrappers for the user memory, rather than performing conventional synthesis functions for user-design memories. The inputs include the user ternary RTL, as well as additional potential inputs for pre-compiler control. The wrappers instantiate the operations, such as MPRs or MPWs, and create the ternary-memory support logic to, for example, prevent unknown-value writes and to output unknown values X for unknown-value reads.

公开(公告)号：US10540466B1

公开(公告)日：2020-01-21

申请号：US15893418

申请日：2018-02-09

Applicant: CADENCE DESIGN SYSTEMS, INC.

Inventor： Alon Kfir ,  Jennifer Lee

IPC: G06F17/50

Abstract: An exemplary emulation computer may allocate a portion of its emulation memory for capturing probe data during a runtime of emulating a device under test (DUT). The emulation computer may instantiate a plurality of streaming probes from dynamic netlists provided by a user. The streaming probes may capture non-transitory internal signals within the DUT and transmit the captured non-transitory internal signals to the allocated portion of the emulation memory, which in turn may store the received signals as waveform data records. During the runtime of emulating the DUT, the emulation computer may receive an upload request for the waveform data records from a workstation computer. In response to the request, the emulation computer may transmit the waveform data records to the workstation computer. The emulation computer does not have to pause or stop the runtime of emulating the DUT while transmitting the data records to the workstation computer.