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GitHub Repository
Handling Chinese text on the Commodore 64
8 starsAssembly
Rendering Chinese text on a Commodore 64
by lionello·May 24, 2026·4 points·0 comments
AI Analysis
●●●●GemWizardryNiche GemZero to One
Fits 2,500+ Chinese glyphs on a C64 using dynamic caching and self-modifying 6502 code.
Strengths
- •Rank-based GB2312 lookup compresses mapping tables without runtime bloat.
- •Dynamic charset swapping via raster IRQs doubles available glyph slots.
- •Offline Python tooling generates dense binary tables for efficient 6502 execution.
Weaknesses
- •IME and editing features are future roadmap items, not yet implemented.
- •Limited to GB2312 subset; full Unicode support is impossible on this hardware.
Category
Target Audience
Retro computing enthusiasts, embedded developers, demoscene artists
Post Description
POC to print simplified Chinese hanzi on a Commodore 64 using native text mode. Eventually I want to turn this into a full-fledged reader/editor with Pinyin IME.
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