{
	"$schema": "http://json-schema.org/draft-07/schema#",
	"$id":     "schema/header.json",

	"title": "Flash/RTC game header description",
	"type":  "object",

	"required":             [ "dataFormat", "yearField" ],
	"additionalProperties": false,

	"properties": {
		"dataFormat": {
			"title":       "Data format type",
			"description": "Format of the header. Currently only the 'extended' format is supported.",
			"type":        "string",

			"enum": [ "extended" ]
		},
		"yearField": {
			"title":       "Year field",
			"description": "The value of the 2-byte year field stored in the EEPROM, usually zero or the year the game came out encoded as BCD (either big or little endian).",
			"type":        "string",

			"pattern": "^[0-9a-f]{2}-[0-9a-f]{2}$",
			"default": "20-00"
		},

		"ioBoardIDType": {
			"title":       "I/O board ID type",
			"description": "Format of the I/O board ID stored as part of the header. Omit if no I/O board ID is stored.",
			"type":        "string",

			"enum": [ "checksum", "md5" ]
		},

		"required": {
			"title":       "Header required by game",
			"description": "Whether or not the game requires the header to be present and will refuse to run if missing, rather than initializing it. Only valid for RTC RAM headers.",
			"type":        "boolean"
		},
		"specificationWildcard": {
			"title":       "Use specification wildcard",
			"description": "Whether to set the specification code in the header to 'G*' instead of the game's actual specification.",
			"type":        "boolean"
		},
		"invertChecksum": {
			"title":       "Invert header checksum",
			"description": "Whether to negate all bits of the header's checksum.",
			"type":        "boolean"
		},
		"gx706Workaround": {
			"title":       "GX706 checksum workaround",
			"description": "If true, the specification code will be temporarily set to 'GX' when the checksum is calculated. Required by GX706, which sets the specification to 'GE' due to a bug.",
			"type":        "boolean"
		}
	}
}