4 bytes vendor id at 0x0
4 bytes vendor class id at 0x4
4 bytes device id at 0x8
1 byte class at 0xb
1 byte subclass 0xf
1 byte prog if 0x10 
1 byte bar enable at 0x11
8 byte BAR0 at 0x12
8 byte BAR1 at 0x1A
8 byte BAR2 at 0x22
8 byte BAR3 at 0x2A
8 byte BAR4 at 0x32
8 byte BAR5 at 0x3A
8 byte BAR6 at 0x42
8 byte BAR7 at 0x4A
173 bytes unused at 0x52 (free for use by devices)