Packet 0x83

The server sends clients Packet 0x83 to communicate the list of default (non-game) lobbies available.

Note that PSO Episode 3 has five more lobbies than other versions, for a total of 20. The last five entries in the lobby list below describe the CARD lobbies (which are placed first in the list presented to the player). Technically, PSOv1 and the Dreamcast Network Trial Edition only have 10 lobbies, but the games are hard-coded to copy the first 10 out of the packet and use them, so it should be safe to still send all 15 normal lobbies to them.

Dreamcast Packet Format

Bytes	Meaning
0x00	Packet Type (0x83)
0x01	Flags (0x0F -- 15 lobbies)
0x02-0x03	Packet Size (0x00C4)
0x04...	Lobby Entries (see below for format)

Lobby Entry Format

Each lobby has one entry, plus one at the end as padding. These entries are as follows (so there's a total of 16 of these in the packet -- the last is all zeroes):

Bytes	Meaning
0x00-0x03	Menu ID
0x04-0x07	Item ID
0x08-0x0B	Padding (all zeroes)