OK some progress
1. do not mess with usbport.sys file! it only leads to disaster I did it 3 times all resulting in me having to pull the harddrive and resetting the file on another machine
2. you do need the hidusbf program (from the link RandyT gave above), but it is a little buggy with XP x64
I finally found some instruction from the author that were translated into English, and a couple little things in there gave me some clues
hereyou don't need to be in safe mode
What I did was install one device at a time, run the setup.exe in the hidusb folder, select a device, set the filter to ON and the rate to 500Hz (or whatever you want) then click the install service button, then click the restart button, then close the window. The next step here I think is the key for XP x64.
Go into the hidusb folder right click the file HIDUSBF.INF and click install, then unplug and replug in the USB device, then restart. Repeat for each device, one other thing I noticed is that for some reason the filter sometimes goes off. if it is off the the device will go back to 125Hz the next time you restart, I had to play around with it to keep all the filters on, kinda weird
I have got this to work on my regular mouse and the TurboTwist Hi-Low spinner
I haven't been able to get it to work with my U-Track ball that is hooked up through a MiniPac, but I haven't had any backspin issues with the Trackball anyway, but I am still curious why it won't work
A note of caution DO NOT right click and install the HIDUSBU.INF file I did that by mistake and none of the mice worked, I had to go into the device manager and revert the drivers back to an earlier version or uninstall the device and then start the whole process over again
FrizzelFried, what track ball/interface combo are you using?
Did you try lowering the analog setting for the games in Mame?
what are the symptoms in Shuffleshot, ect?
Believe it or not If I don't have Tempest set up just right I still get backspin, but with the analog dial sensitivity set to 6 it is perfect, but if I go just up to 10 backspin is back. That is some crazy hi resolution spinner
I know all this is a Little confusing so if anybody need help let me know, I wouldn't want anybody else to have to go through this, It's been driving me bonkers for days