Roadmap

Roadmap

Completed

Core CPU

• Educational 17-opcode CPU (CpuCore)
• Full MOS 6502 emulation (56 official opcodes)
• Decimal mode (ADC/SDC) — passes Klaus Dormann decimal test
• Interrupt handling (RESET, IRQ, NMI)
• Z80 CPU MVP (NOP, HALT, LD, JP, IN/OUT)

Machine Modules

• Apple-1 machine module (terminal, PIA, boot panels)
• Apple-1 BASIC integration
• KIM-1 machine module (keypad, LED, RIOT/6530)
• Minimal Blink machine (dynamic hardware platform)
• Retro70 computer (educational 6502 system)

Infrastructure

• .NET 10 migration
• Avalonia UI frontend
• Clean architecture with DI
• NLog structured logging
• CI/CD with GitHub Actions
• 400+ unit/integration tests
• Program solution manifests (.solution.json)

In Progress

MOS 6502

• Klaus Dormann full functional test pass (currently times out)
• 65C02 extended opcodes

Z80 CPU

• Arithmetic/logic instructions (ADD, SUB, AND, OR, XOR)
• Jump/call instructions (JP, JR, CALL, RET)
• Stack operations (PUSH, POP)
• Block I/O instructions
• Interrupt modes 0/1/2

UI

• Machine selector polish
• Terminal output performance optimization
• Dark/light theme toggle

Planned

Devices

• Dynamic device loading from solution manifests
• Additional I2C devices (temperature sensor, EEPROM)
• Storage device emulation (SD card via SPI)

Machine Modules

• Commodore 64 (long-term)
• RCA 1802 COSMAC ELF
• Intel 8080/8085

Infrastructure

• WebAssembly build for in-browser emulation
• Snapshot/restore for save states
• Performance profiler integration
• Visual debugger with signal/waveform views

See Also

• GitHub Issues
• Project Board