Yes it happened, the DreamCast not can be used with anything the Bliss-Box adapters support. Took a bit to make this work and turns out the Bridge is fast enough to do it. Another project in ASM but working. The DC requires a license and device ID both of which I got from an existing controller. After playing with the data in many ways one day it just started working. Afterwords I see the license and ID is not even relevant. Sending null for both worked. Oh well… The DC also uses a device player that is assigned on insert. So first controller plugged in to any port is 1, then 2,3,4.
Left room for mouse and maybe the fishing poll but not sure what controller will for that. maracas requires two motion sticks. So unsure what more to do there. Either way it is a good start!