if you already have a Midway I-40 adapter do you still need a KeyWiz49 to hook it up to your PC or can it be done with the I-40?
I doubt it uses any standard PC communication (ie, the I-40 by itself won't work), but I have no idea what it actually outputs.
Now, I'm
very interested in what the I-40 outputs, and where it goes. Why?
Currently, mame only emulates the 8-way sticks on the blitz and other midway 49-way games. To have the 49-way part working, mame should emulate the I-40 adapter, and to do that properly we need to find out how it communicates (unless a hack is used, of course). The schematics and other info that comes in the game operating manuals aren't clear on what's going on (to me at least).
Do you have any docs on the I-40, besides the normal blitz arcade manuals?
BTW, the Gauntlet games didn't use the I-40, and thus are much more straight forward on emulating the 49-way sticks. I have no idea why the sport game used the I-40, and the gauntlet games didn't.