Hello!

I am sh4.

I love computers, math, and music. My work and side projects revolve around improving performance (storage systems, AI inference, GPU compute, etc.), low-level system emulation and programming, and hardware design. I'm also a terrible indoor boulder-er, runner (maybe?), and hiker.

Blog

• 2026-01-01 — 2025 Reflections
• 2025-08-18 — On Running

Zoo

Zoo is a multi-system emulator for playing and studying Sega Dreamcast, the Sony Playstation, and a custom "fantasy console" called Dragon (see below). Zoo is a long-running project and was the first project to teach me how hardware really works.

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Project Page

Dragon

Dragon is an experiment to create a "fantasy console". Basically I played a bunch of PS1 and N64 when I was a kid, and now that I know enough about how programming and hardware work, I'm in the midst of designing my own console, including CPU/GPU hardware as well as all the associated software, simulators, etc.

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Dragon System Architecture
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Dragon Compute Language (DCL)
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Dragon Compute Language (DCL) - Compiler Overview (Part 1)