Vendor Specific InfoFrame (VSIF) for Game-ID

Byte / Bit # 7 6 5 4 3 2 1 0
HB0 Packet Type = 0x81
HB1 Version = 1
HB2 0 0 0 Length = 27
PB0 Checksum
PB1 IEEE OUI Third Octet = 0x49
PB2 IEEE OUI Second Octet = 0x31
PB3 IEEE OUI First Octet = 0xF4
PB4 Vendor Type = 0x01 (Game ID)
PB5
Game-ID System Identifier
PS1 0x01
PS2 0x02
N64 0x03
XBOX 0x04
WII 0x05
GC 0x06
DC 0x07
SNES 0x08
GENESIS 0x09
SATURN 0x0A
3DO 0x0B
PB6 Game-ID Byte0
... ...
PB27 Game-ID Byte22 (unused Bytes should be 0x00)

For more information regarding Game-ID, start here:

Resolve Game-IDs to Game Names