Whisper¶
Whisper is a RISCV instruction set simulator (ISS) developed for the verification of the Swerv micro-controller. It allows the user to run RISCV code without RISCV hardware. It has an interactive mode where the user can single step the target RISCV code and inspect/modify the RISCV registers or the simulated system memory. It can also run in lock step with a Verilog simulator serving as a “golden model” against which an implementation is checked after each instruction of a test program. Official reference can be found here.
Contents
Configuration¶
You can configure debugging tool using debug_tool option in “platformio.ini” (Project Configuration File):
[env:myenv]
platform = ...
board = ...
debug_tool = whisper
More options:
Platforms¶
| Name | Description |
|---|---|
| CHIPS Alliance | The CHIPS Alliance develops high-quality, open source hardware designs relevant to silicon devices and FPGAs. |
Frameworks¶
| Name | Description |
|---|---|
| FreeRTOS | FreeRTOS is a real-time operating system kernel for embedded devices that has been ported to 40 microcontroller platforms |
| WD-Firmware | The WD Firmware package contains firmware applications and Processor Support Package (PSP) for various cores, alongside demos which support all features |
| Zephyr RTOS | The Zephyr Project is a scalable real-time operating system (RTOS) supporting multiple hardware architectures, optimized for resource constrained devices, and built with safety and security in mind |
Boards¶
Note
For more detailed board information please scroll tables below by horizontal.
| Name | Platform | Debug | MCU | Frequency | Flash | RAM |
|---|---|---|---|---|---|---|
| RVfpga: Digilent Nexys A7 | CHIPS Alliance | On-board | 320MHz | 16MB | 1.16MB |