This blog shows how to leverage the PIO found on RP2040 to drive a not-so-common type of display. Combined with the large SRAM found on the RP2040, this is quite usable.
(From: https://www.zephray.me/post/rpi_pico_driving_el/)
I thought this was a really good introduction to using the PIO blocks in the RP2040 to drive a peripheral, rather than bit-banging using the CPU.
Being involved with retro computers, I have a few floppy disks (of the 3.5-inch variety) that I would like to preserve as faithfully as possible. Of course, I know there are dedicated devices for doing that, such as the Kryoflux or the SuperCard Pro. But it occurred to me that I already own the required hardware to capture the low-level data from a floppy disk: my Saleae Logic 8 logic analyzer.
(From: https://www.chzsoft.de/site/hardware/preserving-a-floppy-disk-with-a-logic-analyzer/)
Another semi-automated way to capture raw (magnetic flux) disk images from floppy disks, this one using a drive and a logic analyzer with some post-processing. In addition to the other tools mentioned in the post, AppleSauce is a great option.
I want to talk about first simulating an RTL design that contains of soft CPU, and debugging the firmware that ran on that soft CPU after the simulation has completed.
(From: https://tomverbeure.github.io/2022/02/20/GDBWave-Post-Simulation-RISCV-SW-Debugging.html)
Novel idea of using GDB to debug software running on a soft-core processor in an FPGA simulation, AFTER the simulation is completed!