FSPXI:ReadFile

Request

Index Word	Description
0	Header code [0x00090142]
1	File handle lower word
2	File handle upper word
3	Offset lower word
4	Offset upper word
5	Size
6	(size << 8) | 4
7	Output buffer

Response

Index Word	Description
0	Header code
1	Result code
2	Size read
3	4