https://dean.sellers.id.au/tags/yosys/ Recent content in Yosys on Ampsand Hugo en-AU Dean Sellers Thu, 29 Oct 2026 12:04:08 +1100 https://dean.sellers.id.au/2026/10/18/sim-03-a-second-opinion/ Sun, 18 Oct 2026 22:00:00 +1100 https://dean.sellers.id.au/2026/10/18/sim-03-a-second-opinion/ <p class="post-subtitle">A second opinion, and a mutation that failed for the wrong reason</p><p><em>Part 3 of the simulator thread. Previously: <a href="https://dean.sellers.id.au/2026/10/18/sim-02-a-simulator-that-lies/">A simulator that lies</a>. The other thread is the <a href="https://dean.sellers.id.au/tags/riscv-cpu/">RISC-V soft core</a> series.</em></p> <p>If the main simulator is a sample and not a verdict, I need a second one. Not a copy of the first, which would share its faults, but a simulator that gets things wrong in different places, or not at all.</p>