dwt: full ROM dump over rdebug is byte-identical to vt1200_v22.bin (md5 match)

dwt/notes/REAL_UNIT.md

@@ -304,3 +304,21 @@ Evidence: `dwt/loader/evidence/real-unit-tftp/hostload_tftp_xhello.png`.
 This is the first fully self-contained delivery on the real unit: the terminal
 fetched the COFF over TFTP into `malloc` memory and ran it in a created
 process, with only the rdebug jump used to start the fetch.
+
+### Full ROM dump: byte-identical to the reference image
+
+`dwt/rom_dump.py` read 1,835,008 bytes at bit `0x3F200000` (1792 x 1 KiB
+chunks, 2:06, ~14.6 KB/s) and compared the md5:
+
+```
+b46a3e442ccb86134d2356bd70d22fd2   (real unit)
+b46a3e442ccb86134d2356bd70d22fd2   (vt1200_v22.bin)
+MATCH
+```
+
+So the image the project has analysed and emulated is the ROM on the machine;
+no revision or bank difference. The dump is reproducible with:
+
+```sh
+python3 dwt/rom_dump.py --host 100.103.100.103
+```