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feat(cartridge): implement RTC calendar transfers and clock updates

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0xrsydn 2026-10-07 05:55:31 +07:00
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docs/usability-roadmap.md
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@ -41,10 +41,10 @@ This exposed and corrected missing firmware affine-scale initialization, without
Frame-based scenarios and the preparation adapter now make the result repeatable.
A local Emerald run now passes its initial all-device reset, master sound enable, and pulse/noise triggers.
It also passes normal serial transfers and idle multiplayer configuration.
With `--rtc`, it passes Game Pak GPIO setup and stops at the first unsupported RTC calendar-read command.
With `--rtc`, it passes Game Pak GPIO setup and RTC calendar reads, then stops at a Flash unlock write.
The core has tested Direct Sound, both pulse channels, and noise channel 4.
Wave channel 3, a continuous sample stream, and desktop audio output remain missing.
See [the runtime result](research/emerald-reset.md). RTC calendar transfers and an explicit clock-source model are the next startup requirement.
See [the runtime result](research/emerald-reset.md). Flash identification and its save protocol are the next demonstrated startup requirement.
The separate save requirement remains cartridge SRAM, followed by safe host save persistence.
SRAM is byte-addressable battery-backed save memory. Flash and EEPROM remain separate protocols.