VT1200 hello-world payload: main-RAM excerpt from the frame-145 dump
(full dump: VT1200_DUMP_RAM=145 VT1200_DUMP_DIR=... -> vt1200-ram-145.bin, 4 MiB)

payload image at byte 0x00300000 (bit 0x01800000), 82 bytes:
  dump == payload.bin: True
  00300000: 60 03 50 05 40 07 e0 09 ad de 00 00 80 05 00 00
  00300010: 81 01 e0 09 ef be 00 00 80 05 10 00 81 01 e2 09
  00300020: 40 90 01 04 e3 09 40 00 00 00 e4 09 10 00 00 00
  00300030: 21 44 e0 09 ff ff 00 00 85 4c 02 90 01 0b 01 00
  00300040: 85 3c 02 0b 00 03 03 3d 81 05 20 00 81 01 00 03
  00300050: fe c0 00 00 00 00 00 00 00 00 00 00 00 00 00 00

markers at byte 0x00302000 (bit 0x01810000):
  00302000: ad de ef be 00 04 00 00 00 00 00 00 00 00 00 00
  00302010: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  00302020: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

  MAGIC1 = word @01810000 = 0xDEAD  -> bytes AD DE
  MAGIC2 = word @01810010 = 0xBEEF  -> bytes EF BE
  COUNT  = word @01810020 = 0x0400  -> bytes 00 04 (64*16 = 1024 stores)
