I could not get any technical information about Atari Lynx games, while working on my own ComLynx implementation. So I started collecting information as I came across it.

Some of this was confirmed in this old document. The rest was read out from SERDAT and SERCTL themselves.

DISCLAIMER: this is by no means complete and there are no guarantees about accuracy. Having said that, you may use this information in any way you please. Though it would be nice of you to mention github.com/superKoder/lynx_game_info/ as a source whenever you do.

Contributions are welcome!

• ID: 8272 (50 20)
• P1 handshake: 05 00 00 03 50 20 87
• P2 handshake: 05 00 01 03 50 20 86
• Parity: enabled (odd)

• ID: 32 (20 00)
• P1 handshake: 05 00 00 01 20 00 D9
• P2 handshake: 05 00 01 03 20 00 D6
• Parity: enabled (odd)

• ID: 28672 00 70
• P1 handshake: 05 00 00 03 00 70 87
• P2 handshake: 05 00 01 03 00 70 86
• Parity: enabled (odd)

Malibu Bikini Volleyball and Battlezone are oddballs. They doesn't do the usual ritual, but rather handshakes on a single byte!

• ID: n/a
• P1 handshake: FF
• P2 handshake: FE
• Parity: enabled (odd)

• ID: explicitly unset (00 00)
• P1 handshake: 05 00 00 01 00 00 F9
• P2 handshake: 05 00 01 03 00 00 F6
• Parity: enabled (odd)

California Games appears to be a little of an odd ball when it comes to ComLynx communication. Not only is its handshake very confusing, compared with most of the others. It is also the only game I can think of, so far, that uses even parity.

• ID: 3 (according to Epix doc)
• P1 handshake: 03 00 80 FE C8 92 DB 02
• P2 handshake: 03 00 01 FC 7C 13 0F 01
• Parity: enabled (even!)

• ID: 200 (C8 00)
• P1 handshake: 05 00 00 01 C8 00 31
• P2 handshake: 05 00 01 03 C8 00 2E
• Parity: enabled (odd)

This ComLynx handshake is exactly the same as Pit-Fighter's.

• ID: 65535 (FF FF), basically -1 and not unique.
• P1 handshake: 05 00 00 01 FF FF FB
• P2 handshake: 05 00 01 03 FF FF F8
• Parity: enabled (odd)

• ID: 1 (01 00)
• P1 handshake: 05 00 00 01 01 00 F8
• P2 handshake: 05 00 01 03 01 00 F5
• Parity: enabled (odd)

Malibu Bikini Volleyball and Battlezone are oddballs. They doesn't do the usual ritual, but rather handshakes on a single byte!

• ID: n/a
• P1 handshake: FF
• P2 handshake: FE
• Parity: enabled (odd)

• ID: 45232 (B0 B0)
• P1 handshake: 05 00 00 03 B0 B0 97
• P2 handshake: 05 00 01 02 B0 B0 97 (or 05 00 01 03 B0 B0 96)
• Parity: enabled (odd)

This ComLynx handshake is exactly the same as Double Dragon's.

• ID: 65535 (FF FF), basically -1 and not unique.
• P1 handshake: 05 00 00 01 FF FF FB
• P2 handshake: 05 00 01 03 FF FF F8
• Parity: enabled (odd)

• ID: 47806 (BE BA), to spell "babe"
• P1 handshake: 05 00 00 03 BE BA 7F
• P2 handshake: 05 00 01 03 BE BA 7E
• Parity: enabled (odd)

• ID: 4949 (55 13)
• P1 handshake: 05 00 00 03 55 13 8F
• P2 handshake: 05 00 01 03 55 13 8E
• Parity: enabled (odd)

• ID: 210 (D2 00)
• P1 handshake: 05 00 00 03 D2 00 25
• P2 handshake: 05 00 01 03 D2 00 24
• Parity: enabled (odd)

• ID: 6 (06 00)
• P1 handshake: 05 00 00 01 06 00 F3
• P2 handshake: 05 00 01 03 06 00 F0
• Parity: enabled (odd)

• ID: 83 (53 00)
• P1 handshake: 05 00 00 01 53 00 A6
• P2 handshake: 05 00 01 02 53 00 A4
• Parity: enabled (odd)

• ID: 5 (05 00)
• P1 handshake: 05 00 00 01 05 00 F4
• P2 handshake: 05 00 01 03 05 00 F1
• Parity: enabled (odd)

• ID: 7 (07 00)
• P1 handshake: 05 00 00 01 07 00 F2 (or 05 00 00 01 07 00 F0)
• P2 handshake: 05 00 01 03 07 00 EF
• Parity: enabled (odd)

• ID: 40 (28 00)
• P1 handshake: 05 00 00 03 28 00 CF
• P2 handshake: 05 00 01 03 28 00 CE
• Parity: enabled (odd)

• ID: 04 00
• P1 handshake: 05 00 00 01 04 00 F5 (or 05 00 00 03 04 00 F3)
• P2 handshake: 05 00 01 03 04 00 F2
• Parity: enabled (odd)

• ID: 255 (FF 00)
• P1 handshake: 05 00 00 01 FF 00 FA
• P2 handshake: 05 00 01 03 FF 00 F7
• Parity: enabled (odd)

• ID: 2 (02 00)
• P1 handshake: 05 00 00 01 02 00 F7
• P2 handshake: 05 00 01 03 02 00 F4
• Parity: enabled (odd)

(To be continued... I hope...)