chimera-gfx-Public/docs/retroarch/phase-1.0p-terminal-ordering-analysis.md

Phase 1.0P terminal ordering analysis

The Phase-1.0O order D07, D12, D04 is deterministic in the bound source; it is not evidence of network reordering.

1. The early diagnostic detects the nonzero submit result and enters SDL's framebuffer_fail path.
2. chimera_ps5_smoke_video_error(E104) requests failure shutdown.
3. The shutdown request synchronously emits D12, which the current stream helper marks terminal.
4. PS5_VideoInit then returns failure to sdl2_gfx.c.
5. The caller emits D04 with the SDL initialization result -1.

D12 and D04 arrived in the same host receive block. The runner intentionally requires the last parsed frame to be terminal, so D04 correctly prevented a successful terminal classification. The individual CRC-valid frames remain runtime evidence; successful cleanup and safe exit do not.

Accepting any earlier terminal frame would incorrectly promote a shutdown request into lifecycle completion. A future protocol must instead use a new magic and a distinct final stage emitted only after D04 and bounded cleanup or return evidence. D12 may remain failure/shutdown-request evidence, but must not serve as the lifecycle terminal on this error path. This is a design requirement only: Phase 1.0P changes neither target code nor the host parser.