Wow...security function...lolololol. What a joke...
Okay, here's the sitch. I have a US KOC, several Parallel adapters I've made over the years, and an EMS USB2.
I couldn't figure out why in the hell is was so damn laggy with the EMS, well I recently found out.
Apparently Konami's change in hardware from Japan to the US (whatever it was), is not very stable outside of the standard PS2 controller timings. It jitters. Now if you have a parallel adapter and PSXPAD software, you can go into the timing adjustment program, lower the clock timings, and watch that baby bounce between valid readings and all FF (which is what causes the jitter).
Most USB-based adapters (especially EMS) don't care about jitters and will just ignore those readings (since they know hardware jitters...MadKatz NeGcon racing wheels are notorious for this) and just use the next valid read as an update, since the extreme latency in input.
PSXPAD, a piece of software for 2K/XP/Vista(with a little hack) systems is a bit more cooperative, with timing adjustments, however when setting the KOC into a cooperative clock timing, the turntable no longer responds at all. It's really aqward, but there is a way to use them with Parallel adapters.
PPJoy...yep, you hear me right...PPJoy. This software (long since I'd ever used it until now) will properly accept ANY FORMAT PARALLEL ADAPTER and communicate sucessfully with a BM US KOC
Do you think I'm joking? Go give it a shot...There is not security crap, it's just the good old jitters that need to be intercepted acordingly.
Just FYI I am using PPJoy on a Direct Pad Pro-style interface with a BM US KOC passed-through Joy2Key (go fig) in the piece of software nobody should be talking about, 12th revision, without any lag at all.
No joke.
P.S.: I have dismantled my controller (to loosen the uber-tight picket wheel of doom) and there is one single glop top, and a hex inverter (to turn two picket fences into a schmitt trigger).
P.P.S.: I just checked the chan forum archive, and it looks like they used SmartJoy 3 Plus to get theirs goin'...that is, if you wana do it USB...