tools/uci: honor U64_HOST env var in boot_check and phase2_check

CLAUDE.md

@@ -163,7 +163,8 @@ to the ip65 layout.
 
 ### UCI test scripts
 
-Scripts under `tools/uci/` require a U64E at 192.168.1.81 and use
+Scripts under `tools/uci/` require a U64E (default 192.168.1.81,
+overridable via the `U64_HOST` environment variable) and use
 `DeviceLock` + `enable_uci`/`disable_uci`:
 
  - `boot_check.py` — verify UCI firmware detection and boot banner

LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2026 JC-000
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

@@ -18,11 +18,11 @@ An HTTPS client for the Commodore 64 in 6502 assembly. Implements TLS 1.3 over T
  │ │ Record Layer │ Handshake Proto │ │ tls_record.asm, tls_handshake.asm
  │ └──────┬───────┴────────┬─────────┘ │
  │ │ │ │
- │ ┌──────┴───────┐ ┌─────┴──────────┐ │
- │ │ AEAD │ │ Key Schedule │ │ (crypto modules)
- │ │ ChaCha20- │ │ HKDF-SHA256 │ │ hkdf.asm
- │ │ Poly1305 │ │ ECDHE P-256 │ │
- │ └──────────────┘ └────────────────┘ │
+ │ ┌──────┴───────┐ ┌─────┴──────────┐ │
+ │ │ AEAD │ │ Key Schedule │ │ (crypto modules)
+ │ │ ChaCha20- │ │ HKDF-SHA256 │ │ hkdf.asm
+ │ │ Poly1305 │ │ ECDHE P-256 │ │
+ │ └──────────────┘ └────────────────┘ │
  ├─────────────────────────────────────────┤
  │ Network ABI (src/net_abi.inc) │ net_init / net_tcp_* / net_dns_*
  ├──────────────────────┬──────────────────┤
@@ -114,7 +114,12 @@ The Makefile automatically builds ip65 from the submodule into a flat binary blo
 
 ## Project Status
 
-Current status (40 KB binary, 537 labels):
+Current status:
+
+- 38 KB binary (ip65 build), 1738 labels
+- 38 KB binary (uci build), 1816 labels
+
+Progress:
 
 - [x] Project structure and build system
 - [x] ip65 submodule integration — 6.8 KB binary blob at $2000 (TCP/UDP/DNS/DHCP/ARP + RR-Net CS8900a)
@@ -205,7 +210,7 @@ The setup script creates `br-c64` with `tap-c64-0`/`tap-c64-1`, assigns `10.0.65
 
 ### Ultimate 64 Elite Hardware Tests (UCI backend)
 
-Scripts under `tools/uci/` drive a real Ultimate 64 Elite over the network (default `192.168.1.81`), exercising the **UCI backend only** (built with `make BACKEND=uci`). They DMA the PRG into RAM, run the boot, and snapshot UCI/TLS state on completion or timeout. These scripts do not run under VICE.
+Scripts under `tools/uci/` drive a real Ultimate 64 Elite over the network (default `192.168.1.81`, overridable via the `U64_HOST` environment variable), exercising the **UCI backend only** (built with `make BACKEND=uci`). They DMA the PRG into RAM, run the boot, and snapshot UCI/TLS state on completion or timeout. These scripts do not run under VICE.
 
 ```bash
 python3 tools/uci/boot_check.py # UCI firmware detection

tools/uci/boot_check.py

@@ -3,27 +3,32 @@
 Phase 1b boot check for the UCI backend.
 
 Uploads build/c64-https.prg (assumed to have been built with
-`make BACKEND=uci`) to the U64E at 192.168.1.81, waits for the PRG
-to boot, reads screen RAM at $0400 (40x25 = 1000 bytes), decodes the
-Commodore screen-code bytes to ASCII, and prints the non-empty lines.
+`make BACKEND=uci`) to the U64E (default 192.168.1.81, overridable via
+U64_HOST), waits for the PRG to boot, reads screen RAM at $0400
+(40x25 = 1000 bytes), decodes the Commodore screen-code bytes to
+ASCII, and prints the non-empty lines.
 
 Pass criterion: screen contains printable text (not a uniform field
 of spaces or garbage). This only verifies the PRG loads and runs on
 real hardware — no UCI commands are exercised.
 
 Usage:
  python3 tools/uci/boot_check.py
+
+Environment:
+ U64_HOST — U64E address (default 192.168.1.81)
 """
 from __future__ import annotations
 
+import os
 import sys
 import time
 from pathlib import Path
 
 from c64_test_harness.backends.device_lock import DeviceLock
 from c64_test_harness.backends.ultimate64_client import Ultimate64Client
 
-HOST = "192.168.1.81"
+HOST = os.environ.get("U64_HOST", "192.168.1.81")
 PRG_PATH = Path(__file__).resolve().parents[2] / "build" / "c64-https.prg"
 
 

tools/uci/phase2_check.py

@@ -20,9 +20,13 @@
 
 Usage:
  python3 tools/uci/phase2_check.py
+
+Environment:
+ U64_HOST — U64E address (default 192.168.1.81)
 """
 from __future__ import annotations
 
+import os
 import sys
 import time
 from pathlib import Path
@@ -32,7 +36,7 @@
 from c64_test_harness.backends.ultimate64_client import Ultimate64Client
 from c64_test_harness.uci_network import enable_uci, disable_uci
 
-HOST = "192.168.1.81"
+HOST = os.environ.get("U64_HOST", "192.168.1.81")
 REPO_ROOT = Path(__file__).resolve().parents[2]
 PRG_PATH = REPO_ROOT / "build" / "c64-https.prg"
 LABELS_PATH = REPO_ROOT / "build" / "labels.txt"