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LMARV-1: A RISC-V processor you can see. Part 1: 32-bit registers.

Robert Baruch

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Advanced. Deep dive for people who know the field.

112K views8 years ago2 recommendations

HardwareSystems programmingCPUs and computer architectureElectronicsRetro computing

Robert Baruch explains and demonstrates the design of 32-bit registers for a RISC-V processor built using discrete MSI and LSI chips.

The LMARV-1 (Learn Me A Risc-V, version 1) is a RISC-V processor built out of MSI and LSI chips. You can point to pieces of the processor and see the data flow. It should be a nice way of demonstrating how RISC-V works and how simple it is to implement. RISC-V specs: riscv.org/specifications/ Github for KiCAD schematics and gerbers: github.com/RobertBaruch/lmarv RISC-V YouTube channel: youtube.com/channel/UC5gLmcFuvdGbajs4VL-WU3g

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What people say. Recommended for those interested in building homebrew CPUs and understanding modern hardware design through discrete components.

u/combinatorylogicin r/programming • Recommends

On “Ever wonder how computers work? This guy builds one step by step and explains how every part works in a way that anyone can understand. I no longer just say "it's magic."”

Of course - I mean, you can do this for a simple 8-bit breadboard computer too, to get the best of two worlds: get your hands dirty with discrete components, and learn modern hardware design tools at the same time. As for 32bit in discrete components - have a look at this: link to this video
6View on Reddit

u/barsoapin r/compsci • Recommends

On “A community for homebrew CPUs?”

> There’s not a remote chance that you could build a TTL Well not exactly TTL but...
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u/Milumetin r/FPGA • Mentions

On “Has anyone made a microcontroller with discrete components?”

Robert Baruch's series about RISC-V might interest you. First part.
3View on Reddit

u/Mentioned_Videosin r/programming • Mentions

On “Ever wonder how computers work? This guy builds one step by step and explains how every part works in a way that anyone can understand. I no longer just say "it's magic."”

Other videos in this thread: Watch Playlist ▶ VIDEO|COMMENT -|- LMARV-1: A RISC-V processor you can see. Part 1: 32-bit registers.|+6 - Of course - I mean, you can do this for a simple 8-bit breadboard computer too, to get the best of two worlds: get your hands dirty with discrete components, and learn modern hardware design tools at the same time. As for 32bit in discrete component... Red Dwarf Cat - What is it?|+5 - That reminds me of this Red Dwarf clip: Crash Course Computer Science Preview|+1 - Perhaps the Crash Course series is something for you. Making logic gates from transistors|+1 - Go to Ben Eater's YouTube channel. Under videos, start with "Making logic gates from…
2View on Reddit