RTL Studio Open IDE

1.6 · RV SYS CLASS

Bus MMIO top

Assemble the RV32I core, interconnect, and peripheral island into one subsystem by wiring the AXI bus interfaces in the top-level design.

Video coming soon. This lesson page stays at the same URL when the lecture publishes.

What you practice

Bus MMIO top (1.6). Assemble the RV32I core, interconnect, and peripheral island into one subsystem by wiring the AXI bus interfaces in the top-level design. It is in Bus + MMIO subsystem top — Part 1 · Core on Bus (MMIO) of the RISC-V on SoC & System Masterclass.

The core and the mini-SoC simulate as one workspace in the IDE. Follow MMIO, interrupts, and the program on the Verilator waveform, not only a pass line.

Run it in the Verilog IDE

  1. Open the system lesson in the IDE. The RV32I core and the mini-SoC fabric simulate together.
  2. Run Verilator and trace the program through MMIO: address, load/store data, and the peripheral response.
  3. Interrupts and DMA belong on the waveform next to the instruction stream, not only in a pass/fail line.
  4. Edit the integration RTL, resimulate, and run Yosys on the structural block when you want a netlist.

The lesson is done when the simulation matches Bus MMIO top. Change the source, run the Verilog simulator again, and read the waveform without leaving the IDE. Simulation guide · Yosys guide.