PythOS

2026-08-01 / physical terminal validated 2026-08-08

PythOS Runs Persistent Object Storage Through Physical SDHCI/eMMC Hardware

The Phase 10 storage backend panel was reached across two cold-boot runs on a disposable O2 Micro 1217:8620 laptop target. A later physical evidence-terminal run exposed the full five-page Milestone 1 marker stream on the same target. This page records the public claim, the evidence, and what remains outside the claim.

Release assets Source record 2026-08-08 validation record

Observed Panel

PythOS
sdhci emmc backend
phase10 ok
disk writes
capacity 000000000747C000

The panel is rendered only after the verify-storage path reaches PYTHOS:CORE:PHASE_10_COMPLETE. QEMU remains the automated oracle through COM1 serial and host-image checks; the physical laptop currently has no serial capture path.

Second physical PythOS SDHCI eMMC backend acceptance frame
Second-run committed frame from the physical acceptance video.

2026-08-08 follow-up evidence

Physical Evidence Terminal

Five readable physical terminal pages report count 00000139, drop 00000000, and crc 176F4C6E. The count field is hexadecimal, so 0x139 equals 313 decimal markers. The evidence-terminal implementation, Cargo feature, and QEMU harness are present on main.

Two separate physical boots reproduced the same count, zero-drop state, and CRC. The reconstructed physical stream, including the observed hardware-specific audio path and existing-storage path, contains 313 markers and recomputes to CRC 176F4C6E.

The physical stream is not required to be textually identical to the QEMU stream: hardware discovery and persistent state can truthfully select different marker branches. CRC-32 repeatability is strong reproducibility evidence, not collision-proof identity proof.

PythOS evidence terminal page 1 of 5
Page 1/5 - loader, kernel, controllers, scheduler, shell.
PythOS evidence terminal page 3 of 5
Page 3/5 - storage authorization, journal, recovery, objects.
PythOS evidence terminal page 5 of 5
Page 5/5 - Phase 10, SDHCI/eMMC acceptance, milestone complete.

Open the evidence-terminal gallery, read the physical validation record, or read ADR 0063.

Hardware and Repository

Target

O2 Micro SDHCI/eMMC, vendor/device 1217:8620, BDF 01:00.0, class/subclass/pi 08/05/01.

Evidence terminal

main carries the implementation and scripts/test-evidence-terminal.py QEMU acceptance harness.

QEMU Backing

Automated acceptance remains rooted in COM1 serial ordering and host checks. The evidence-terminal harness additionally validates the framebuffer terminal structure and rejects dropped transcripts. 

cargo fmt --check
cargo clippy -p pythos-core --target x86_64-unknown-none --features verify -- -D warnings
cargo test -p pythos-core
python scripts\test-sdhci-emmc-block-device.py
python scripts\test-object-shell.py --backend sdhci-emmc
python scripts\test-boot.py --slice milestone-1
python scripts\test-evidence-terminal.py

Not Claimed

Storage scope

No generic SDHCI/eMMC compatibility, DMA/ADMA, interrupts, hotplug, partitions, or filesystems are claimed.

Hardware scope

No safe-write claim is made for machines other than the confirmed disposable O2 Micro 1217:8620 target.

Input scope

The physical evidence covers framebuffer output and the evidence terminal, not physical interactive object-shell input.