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Native Tang Nano 20K runtime and readable dialogue rendering - #8
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eoinjordan wants to merge 7 commits into
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September 30, 2026 23:58
eoinjordan
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Adds a native Tang Nano 20K runtime for Studio scene data, using LLVM RV32IM firmware and memory-mapped GBA-style graphics/input with a hardware renderer. The same projects can still compile to ARM GBA ROMs.
Isometric movement, rendering and direction slots follow the Studio contract. Dialogue glyphs now fill their background pixels, and object priority keeps actors below the text layer, preventing scenery and sprites from obscuring dialogue.
Validation: 90 host unit tests, 23 integration tests, the textbox tile regression test and Tang renderer checks passed. Both showcase games built as ARM ROMs and native firmware. CRC-checked uploads on the real Nano 20K reported no CPU fault and about 28.9 fps. Browser checks confirmed boot, dialogue advance and movement; full quest endings were not replayed.