Ant64
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A retro-modern computer system — designed for musicians, coders, and creative explorers.
Click here for an overview of the entire architecture
Models
Three models, one machine underneath: the same GoWin GW5AST-138 FPGA, the same FireStorm chipset, and the same Execution Engine (RISC-V, all eight extensions, dual-issue), with the same audio engine and memory architecture. They differ only in shipped DDR3 and whether the Studio I/O audio expansion is fitted — factory on the Ant64C, an optional upgrade on the others.
See Ant64S, Ant64, and Ant64C for detail.
Shared by every model
| Main CPU | Execution Engine (RISC-V) in GoWin GW5AST-138 |
| CPU extensions | RV64GC + Xcrisp / Xstack / Xcond / Xlate / Xctx / Xmath / Xwide / Xez, dual-issue |
| FPGA | GoWin GW5AST-138 (138K LUT4) |
| FireStorm chipset | ✔ — hardware layers (layer-list model), ImGui command layer, DDR3-backed layers & textures |
| Wide-mode SRAM (1M × 36-bit) | ✔ (~4.5 MB) |
| Audio engine | Advanced |
| USB MIDI 2.0 (× 2) | ✔ |
| Wi-Fi | 2.4 + 5 GHz |
| Ethernet | ✔ (on the DeMon CM5) |
| Display outputs | Main HDMI + retro VGA/audio |
| Supervisor | DeMon (Raspberry Pi CM5) — 2 GB, user-upgradable to 8 GB |
| MIDI / control | Pulse (ESP32-P4 + 32 MB PSRAM) |
| Wireless | Phreak (ESP32-C5) |
| Reconfigurable retro hardware | ✔ |
What differs by model
| Ant64S (Starter) | Ant64 (Power) | Ant64C (Creative) | |
|---|---|---|---|
| Target | Entry / education / retro | Power user / coder | Serious creative workstation |
| DDR3 RAM (shipped) | 1.125 GB (→ 4.5 GB) | 2.25 GB (→ 4.5 GB) | 4.5 GB |
| Audio expansion (Studio I/O) | optional | optional | ✔ fitted |
The Studio I/O audio expansion — premium DAC (ES9038Q2M / CS43198) + low-jitter MCLK, ADC, DIN MIDI In/Out/Thru, and optical digital out — is factory-fitted on the Ant64C and an optional daughterboard on the Ant64S and Ant64. Every model ships with a standard DAC and USB MIDI, and is user-upgradable to 4.5 GB DDR3 via the SODIMM slot. A LoRa · Satellite · GPS radio can also be fitted as an optional expansion on any model.
Prototype
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Keyboard
