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13-post thread, 12 images. THE RDNA2 ASSEMBLER DESIGN DOC, Aug 2023 -
3 years before the Aug 2025 SPIR-V-from-data work. Same idea, more
concrete, GPU-side assembler+editor building RDNA2 binary for Steam
Deck. Custom binary format (no text input); 32-bit words treated
identically so assembly step is massively parallel. 6-arg symbol
joining + 7th arg for signed 16-bit relative branch offset. 5-char
symbol names (6-bit char table, right-angle-only font, upper case,
some glyph aliasing). SMEM 21-bit offset: 20 bits absolute positive
from KART base, 1 MiB easy data. Source = two 128-bit values per
32-bit word: {RULE, SYMBOLS, RELATIVE BRANCH} and {LABEL, COMMENT}.
3-view editor {symbol, rule, source}, 2 copies of everything per
edit, dead parallel. Interface inspired by MOD-like trackers
(Impulse Tracker): simple {instrument, pattern, arrangement} with
spreadsheet feel. Precursor to the 2079746130309415185 micro macro-
forth and the 1951638140600381942 cart file work.