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Initial commit: retroDE_ps2 — first-of-its-kind PS2 GS FPGA core (DE25-Nano / Agilex 5)

Browse Source 
RTL (GS rasterizer, EE core stub, platform bridge, LPDDR4B path), sim regression
(272 TBs), docs, and tooling. Copyrighted PS2 content (BIOS, game code, GS dumps,
and all dump-derived textures/traces) is excluded via .gitignore and stays local.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
This commit is contained in:
thejayman77
2026-06-29 20:10:50 -04:00
commit ec82764bef
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tools/test_gs.sh
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#!/bin/sh
# retroDE_ps2 — Ch340 host gate. No board, no real dump needed (uses content-clean synthetic
# fixtures). Proves: (1) byte-exact container/GIF parse, (2) census classifies supported vs
# unsupported, (3) the translator emits a ps2_feeder scene for supported input that the Ch339
# encoder accepts, and (4) fail-closed on unsupported input.
set -u
HERE="$(cd "$(dirname "$0")" && pwd)"
fail=0
echo "== 1. byte-exact parser test =="
python3 "$HERE/test_gs_parse.py" >/tmp/_gp.txt 2>&1
grep -q "RESULT: PASS" /tmp/_gp.txt && echo " parser byte-exact PASS" || { echo " parser FAIL"; tail -5 /tmp/_gp.txt; fail=1; }
echo "== 2. translator chain on the SUPPORTED fixture =="
python3 "$HERE/gs_make_synthetic.py" >/dev/null 2>&1
python3 "$HERE/gs_translate.py" "$HERE/../captures/gs/synthetic/mini_supported.gs" --scene /tmp/_sup.scene > /tmp/_sup.txt 2>&1
grep -q "census classes : translated=2" /tmp/_sup.txt && echo " census: translated=2 OK" || { echo " census wrong"; grep -a "census classes" /tmp/_sup.txt; fail=1; }
grep -q "EARLIEST SUPPORTED SEGMENT: 2 triangles" /tmp/_sup.txt && echo " earliest segment: 2 tris OK" || { echo " segment wrong"; fail=1; }
gcc -O2 -o /tmp/_psf "$HERE/ps2_feeder.c" 2>/dev/null
if /tmp/_psf --dry-run -f /tmp/_sup.scene >/tmp/_psf.txt 2>&1 && grep -q "tris=2 rects=0" /tmp/_psf.txt; then
echo " ps2_feeder accepts the emitted scene (2 tris) OK"
else echo " ps2_feeder rejected the scene"; tail -3 /tmp/_psf.txt; fail=1; fi
echo "== 3. fail-closed on UNSUPPORTED fixture (mini.gs: textured triangle) =="
python3 "$HERE/gs_translate.py" "$HERE/../captures/gs/synthetic/mini.gs" --scene /tmp/_uns.scene > /tmp/_uns.txt 2>&1
grep -q "NO SUPPORTED SEGMENT" /tmp/_uns.txt && echo " no segment + fail-closed OK" || { echo " should have been unsupported"; grep -a "SEGMENT" /tmp/_uns.txt; fail=1; }
[ ! -f /tmp/_uns.scene ] && echo " no scene file written (fail-closed) OK" || { echo " scene wrongly emitted"; fail=1; }
echo "RESULT: $([ $fail -eq 0 ] && echo PASS || echo FAIL)"
exit $fail