Breadbin466 vs jsc64
Breadbin466
github.comjsc64
github.comSide by side
| Figure | Breadbin466 | jsc64 |
|---|---|---|
| Price from | Free | — |
| Free plan | Yes | — |
| Free trial | — | — |
| Open source | — | — |
| Web | — | Yes |
| Windows | Yes | — |
| macOS | Yes | — |
| Linux | Yes | — |
| Plans published | 1 | 0 |
| Spec score · Commodore 64 Emulators | 8.0 (#7) | 6.9 (#22) |
| License | The emulator is licensed under MIT, while the Commodore ROM images distributed with it are explicitly excluded from that license. | The project is free software under GNU General Public License version 2. |
| Project status | Version 0.99.0 is described as feature-complete and ready for community testing, with broader testing remaining before 1.0. | The maker describes the emulator as a proof of concept. |
| Purpose | Breadbin466 is a from-scratch Commodore 64 emulator written in Rust that focuses on accurately modeling one PAL Assy 250466 machine. | jsc64 is a Commodore 64 emulator written in JavaScript by Tim de Koning. |
| Support | Users can send feedback to [email protected] or report reproducible problems through GitHub Issues. | The maker invites users to submit updates, improvements, and bug fixes through GitHub. |
Plans
In their own words
Breadbin466
Breadbin466 is a free Commodore 64 emulator written in Rust, focused on modeling one PAL Assy 250466 machine. Its cycle-driven emulation covers the MOS 6510 CPU and VIC-II video timing and generation, including bus arbitration. The SID sound model draws on a physical datecode 2286 chip and models oscillator, DAC, mixing, and filter behavior. Its Commodore 1541 drive emulation includes a separate CPU, VIAs, mechanics, GCR read channel, IEC communication, fastloaders, and protected-disk behavior. Other modeled hardware includes CIA interfaces, a 1351 proportional mouse, a Datassette with TAP playback and recording, cartridges, and a 512 KB REU. It supports D64, G64, NIB, NBZ, and D7Z disk images, with tools for image creation, conversion, and space reclamation. The integrated debugger provides breakpoints, disassembly, history, and configurable tracing. Native menus and Inspector windows are provided on macOS, Windows, and Linux. Version 0.99.0 is described as feature-complete, with broader testing still remaining before 1.0.