FSPXI:GetLegacyBannerData

Request

Index Word	Description
0	Header code [0x003C0102]
1	u8 media type
2-3	u64 program ID
4	u8 unknown
5	0x23C004 for (banner size<<8) | 4
6	Output buffer ptr

Response

Index Word	Description
0	Header code
1	Resultcode

Parameter 4

Effect is unknown. FS always calls this with either 0 or 1