I've cloned my arcade machine to a friend's cabinet and we noticed a problem with a few racing games...
I have my Player One Button 1 wired as Enter, so I can move through Windows Explorer menus and such in a pinch if I need to troubleshoot something. I have no shifted keys set up.
For all other keys, when I hold them down, the IPAC sends a continuous key stream to the computer. However, with P1B1, sending the Enter key seems to stop after a while. Very quickly in Night Driver on MAME, rather quickly on Super Mario Kart on the SNES, and after about 15 seconds in Out Run on MAME.
Now my guess is that Windows is not programmed for situations in which the Enter key is constantly being spammed. I get that. The weird thing is, it worked on my old machine without a problem.
My old machine has an IPAC with a PS/2 plug, while my friend's newer IPAC is the current USB version. I also seem to recall readiing somewhere that using the different connectors is responsible for this phenomenon.
My question is twofold:
a) Can I configure my friend's USB IPAC to send Enter repeatedly like my old PS/2 IPAC did?
b) If that isn't possible, would a USB to PS/2 adapter like the one in the attached picture help?
I'd very much like to avoid having to reconfigure the whole system from the Enter key to something else (especially since a long time ago I configured all roughly 3000 MAME roms on the machine manually for each game...)