{
    "structures": {
        "main": {
            "bits": 32,
            "ranges": {
                "31-28": {
                    "name": "cond"
                },
                "27": {
                    "name": "0"
                },
                "26": {
                    "name": "1"
                },
                "25": {
                    "name": "I"
                },
                "24": {
                    "name": "P",
                    "description": "pre / post indexing bit",
                    "values": {
                        "0": "post, add offset after transfer",
                        "1": "pre, add offset before transfer"
                    }
                },
                "23": {
                    "name": "U",
                    "description": "up / down bit",
                    "values": {
                        "0": "down, subtract offset from base",
                        "1": "up, addition offset to base"
                    }
                },
                "22": {
                    "name": "B",
                    "description": "byte / word bit",
                    "values": {
                        "0": "transfer word quantity",
                        "1": "transfer byte quantity"
                    }
                },
                "21": {
                    "name": "W",
                    "description": "write-back bit",
                    "values": {
                        "0": "no write-back",
                        "1": "write address into base"
                    }
                },
                "20": {
                    "name": "L",
                    "description": "load / store bit",
                    "values": {
                        "0": "store to memory",
                        "1": "load from memory"
                    }
                },
                "19-16": {
                    "name": "Rn",
                    "description": "base register"
                },
                "15-12": {
                    "name": "Rd",
                    "description": "source / destination register"
                },
                "11-0": {
                    "name": "offset",
                    "depends-on": "25",
                    "values": {
                        "0": {
                            "description": "offset is an immediate value",
                            "structure": "immediateOffset"
                        },
                        "1": {
                            "description": "offset is a register",
                            "structure": "registerOffset"
                        }
                    }
                }
            }
        },
        "immediateOffset": {
            "bits": 12,
            "ranges": {
                "11-0": {
                    "name": "12-bit immediate offset",
                    "description": "unsigned number"
                }
            }
        },
        "registerOffset": {
            "bits": 12,
            "ranges": {
                "11-4": {
                    "name": "shift",
                    "description": "shift applied to Rm"
                },
                "3-0": {
                    "name": "Rm",
                    "description": "offset register"
                }
            }
        }
    },
    "colors": {
        "main": {
            "31-28": "#FF0000",
            "11-4": [34, 176, 43]
        }
    }
}