Search Articles — Sudonull

https://sudonull.com/cpu-memory-hierarchy-latencies-and-optimization

Analysis of memory hierarchy from registers to DRAM. Cache misses, 64 B lines, locality, prefetcher, MESI. Optimization for RISC-V and desktops. Learn how to speed up code.

https://sudonull.com/sd-card-as-rom-for-risc-v-yrv-fpga

Implementation of SD card as program memory for YRV on Tang Nano 9K: FSM, SPI, tests with HELO. Instructions for FPGA developers. Study the code and optimizations.

https://sudonull.com/risc-v-rva23-in-linux-7-0-spacemit-k3-support

First RVA23 SoC SpacemiT K3 enters mainline Linux 7.0. ISA standardization eliminates fragmentation for embedded. Ubuntu 26.04 LTS with support. Breakdown for developers: trade-offs, benchmarks, toolchain.

https://sudonull.com/launching-risc-v-k1921vg015-toolchain-and-openocd

Setting up riscv-gnu-toolchain, OpenOCD with DirtyJTAG for K1921VG015. Step-by-step build, GCC14 patches, flashing in WSL. Instructions for middle/senior dev.

https://sudonull.com/multithreaded-risc-v-soft-processor-for-fpga

Implementation of hardware multithreading in RISC-V soft-core: shadow registers, hart_table, CSR. Simplification of IRQ and context switching. Verilog sources for FPGA.

https://ymaho.com/amazon-leo-satellites-launched-in-heaviest-atlas-v-mission

Amazon's internet-from-space project takes a leap forward with a record-setting rocket launch. Learn how it could bring broadband to remote areas.

https://ymaho.com/apple-bought-rivos-for-2-9-billion-a-blow-to-nvidia-and-meta

Apple closed the deal to buy AI chip maker Rivos for $2.9 billion. Why this is a strategic blow to Nvidia and Meta — analysis of insights. Read the details.