I am running MAME .62 under Windows 98...so am I SOL? Is there a way to make a serial port trackball hack? If you can plug a joystick into it, why not a trackball? Sorry if I sound like a rookie at this...I am!
I understand the USB port scenario, but won't Windows simply recognize both trackballs as the same input device? Thanks for the help!
ps, I need a beer fridge to go along with this hobby...
Check my sig if you need a link to Mame:Analog+. It is limited to USB on win98 or winMe if you want more than one trackball, due to window's and directX's mouse handling (winXP or serial/ps2 wouldn't do two

). So if you have serial trackballs already, you need dmame with the correct drivers (look at mame.net download for a driver that works). Or hack the trackballs to USB, or buy two USB trackballs.
As noted above, if you have four USB trackballs, you can play four player atari football (and atari soccer) with analog+, while dmame is limited to two trackballs (at least one being serial, with a un-normal setup).
If you have any specific questions on analog+, feel free to ask.