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Re:How a CPU works: Bare metal C on my RISC-V toy CPU by NathanWilliams on Thursday January 26, 2023 @07:27PM (#34540883)
I have been building a CPU using: https://github.com/hneemann/Digital

Much faster than Logisim, UI a little clunky, but my CPU runs around 0.5Mhz and it has very nice peripherals like Telnet, graphics ram, VGA etc

Terrible name that is hard to google, but great tool.

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