C64net

On the record

Audio limit

SID chip emulation is not implemented.github.com · read 8 Oct 2026

Compatibility limits

Only documented CPU opcodes are implemented, and executing an undocumented opcode causes the emulator to crash.github.com · read 8 Oct 2026

Disk images

D64 is the only disk-image format implemented, and D64 extensions for bad-sector emulation are unsupported.github.com · read 8 Oct 2026

Drive emulation

It emulates a 1541-II disk drive at the hardware level, which uses more resources but improves compatibility.github.com · read 8 Oct 2026

Emulation timing

The emulator uses cycle-based emulation to synchronize chips and emulate their timing.github.com · read 8 Oct 2026

Graphics

It emulates the VIC-II graphics chip, including graphic modes, sprites, and collision detection.github.com · read 8 Oct 2026

Hardware coverage

The implementation covers much of the hardware needed to run games, including the VIC-II graphics chip and keyboard and joystick input.github.com · read 8 Oct 2026

Input

The implementation includes keyboard and joystick emulation.github.com · read 8 Oct 2026

License

The repository identifies its license as GPL-3.0.github.com · read 8 Oct 2026

Missing features

SID sound-chip emulation, REU emulation, and tape emulation are unavailable.github.com · read 8 Oct 2026

Other limits

REU and tape emulation are unavailable, and only documented CPU opcodes are implemented.github.com · read 8 Oct 2026

Product

C64net is a Commodore 64 emulator written in C#.github.com · read 8 Oct 2026

Project status

The maker says this C# implementation was abandoned after a C++ reimplementation and describes it as a base for explaining emulation.github.com · read 8 Oct 2026

Purpose

C64net is a Commodore 64 emulator written in C#.github.com · read 8 Oct 2026

ROM files

ROM files are excluded for legal reasons and must be obtained separately and placed in the project ROM folder or beside the executable.github.com · read 8 Oct 2026

ROM requirement

ROM files are excluded for legal reasons and must be obtained separately and copied into the project ROM folder or alongside the executables.github.com · read 8 Oct 2026

Save states

Emulator state can be saved or loaded, with saves written only at the end of a frame.github.com · read 8 Oct 2026

Timing

The emulator uses cycle-based timing to synchronize chips and implements real-drive emulation of a 1541-II disk drive.github.com · read 8 Oct 2026

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