Tiger Karnov, Robin Hood, Battletoads, The Shadow are added to MAME.
external artwork for the backgrounds on this page: http://tsk-tsk.net/net/extart/

Robin Hood is the same game as Gauntlet. They reused the ROM and changed the LCD screen.

Karnov buttons are like this:
Code
       K3         K2         K1          K4       Beta       BA
S6  Max Score     --         --          --        --        --
S1     --         --         Up          --        --        --
S2     --        Left       Right        --        --        --
S3     --        Down        --          --        --        --
S4     --      Fireball      --          --        --        --
S5   Shield   Boomerang      --          --        --        --
GND    --         --         --          On        --        --
VDD    --         --         --          --       Off      Sound

And a random high five:
[Linked Image from i.imgur.com]