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1
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Yaesu FTM-400D
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2
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3
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Comparison of memory dumps to SD card, CLN (assumed to be full memory dump),
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4
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MEM (memory/channel settings) and SYS (system settings).
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5
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6
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Johan Adler, 2014-03-10 (March 10, 2014)
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7
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8
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# xxd -g1 CLNFTM400D.dat cln.xxd
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9
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# cut -d ' ' -f 2- cln.xxd >cln.raw
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10
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## compared CLN, SYS and MEM in Meld diff viewer
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11
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12
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0x0000 to 0x007f: Unknown, identical in all dumps
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13
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0x0080 to 0x017f: Settings
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14
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15
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0x0180 to 0x01ff: Present in both settings (same address) and memories (at 0x0080 to 0x00ff).
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16
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17
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0x0200 to 0x027f: Memories (0x0100 to 0x017f)
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18
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0x0280 to 0x02ff: Settings (0x0200 to 0x027f)
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19
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20
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0x0300 to 0x03ff: Unknown, 0xff in my dump.
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21
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22
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0x0400 to 0x047f: Contains data, APRS-related settings?
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23
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24
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0x0480 to 0x04ff: Memories (0x0180 to 0x01ff)
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25
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0x0500 to 0x057f: Settings (0x0280 to 0x02ff)
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26
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27
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0x0580 to 0x05ff: Unknown, 0xca and 0xff in my dump.
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28
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29
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0x0600 to 0x067f: Contains data, likely APRS-related.
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30
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31
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0x0680 to 0x07ff: Unknown, 0xca in my dump.
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32
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33
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0x0800 to 0x69ff: Memories (0x0200 to 0x63ff), I guess the two main banks.
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34
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35
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0x7800 to 0x780f: Unknown, 'ALL' padded with ASCII space in my dump. APRS-related?
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36
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37
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0x7c00 to 0x7dff: Unknown, looks like data, maybe settings.
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38
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39
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0x8000 to 0x????: APRS reports/contacts, full messages received, 0x80 bytes each.
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40
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41
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0xe400 to 0x????: APRS contacts, 0x20 bytes each.
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42
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43
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44
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Summary:
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45
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46
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Settings:
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47
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0x0080 to 0x017f (0x0100 bytes)
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48
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0x0180 to 0x01ff (0x0080 bytes) Not sure if settings or memory
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49
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0x0280 to 0x02ff (0x0080 bytes)
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50
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0x0500 to 0x057f (0x0080 bytes)
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51
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52
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Memory:
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53
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0x0180 to 0x01ff (0x0080 bytes) Not sure if settings or memory
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54
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0x0200 to 0x027f (0x0080 bytes)
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55
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0x0480 to 0x04ff (0x0080 bytes)
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56
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0x0800 to 0x69ff (0x6200 bytes)
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57
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58
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-------------------------------
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59
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60
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2013-03-16
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61
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62
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Comparing an older cln.xxd with a newer, where I know the frequencies and channel names helps.
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63
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64
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65
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Total memory dump size: 0x12c00 bytes
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66
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67
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68
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0x0180: My guess is current VFO settings, shared by memory and settings dumps.
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69
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70
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0x0200: My guess is Home channels for bank A and B.
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71
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72
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0x0480: Likely channel names for Home channels
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73
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74
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0x0800: Memory bank A, 0x10 bytes each, Should be memory 1-500 and
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75
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nine pairs of scan ranges, lower and upper
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76
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0x2860: Memory bank B, 0x10 bytes each, Should be memory 1-500 and
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77
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nine pairs of scan ranges, lower and upper
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78
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79
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0x48c0: Channel names, bank A, 0x8 bytes each
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80
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0x58f0: Channel names, bank B, 0x8 bytes each
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81
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82
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0x7e00: APRS beacon message text #1
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83
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84
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0x8000: Received and interpreted APRS beacons, seem to be 0x80 bytes each,
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85
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could be all 0x3200 bytes up to 0xb1ff giving room for 100 beacons.
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86
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87
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0xb200: Sent and received interpreted APRS messages, also 0x80 bytes each,
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88
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likely 0x3200 bytes up to 0xe3ff with space for 100 messages.
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89
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90
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0xe400: Received raw APRS beacons, 0x20 bytes each, 0xc80 bytes up to 0xf07f
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91
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0xf080: Sent and received APRS messages, raw, 0x20 bytes each, should be
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92
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0xc80 bytes here to up to 0xfcff
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