I've hooked up the controller ports to the Coleco Game Adaptor for the Spectravideo SVI-328 computer, so the games are now playable:

[Linked Image from i.imgur.com]
[Linked Image from i.imgur.com]

Command line used for this was:

Code
mame64 svi328 -exp sv603 -cart2 dkong

There is an MSX Game Adaptor too, but we don't have a ROM dump for it.