I've been meaning to post this for some time now, but the pandemic and other things in life sidetracked me. But, I made a bit of positive progress getting the controller to work with Spy Hunter and wanted to share some of the info (hopefully I'll remember things correctly!).
I found some info indicating that the lr-mame2003-plus emulator had better support for analog controllers than lr-mame2003, so I switched to use that:
Screenshot from 2021-04-05 12-20-40.png
Once in Emulationstation, I enabled the X-INPUT mode of the steering wheel, and it was detected as a "CHIPUNION USB RACING WHEEL"
Screenshot from 2021-04-05 12-39-15.png
Then, within the Retroarch configuration menus, there were now options for the axis configuration (+ and -) involved with the gas and brake pedals, and steering wheel (paddle):
Screenshot from 2021-04-04 15-38-25.png
I then tried playing a few games, and found the acceleration of Spy Hunter's car was a bit sluggish. I adjusted some of the sensitivity settings for the gas and brake pedals, and the steering wheel (paddle):
Screenshot from 2021-04-04 15-39-42.png
Though not perfect, it made the gameplay good enough that I got through the initial round of cars, got the oil and smoke defenses, and almost made it to what I think would have been the motorboat segment of the game.
If I make any other headway, with either Spy Hunter or other steering wheel games, I'll try to post back here with an update.