Trouble with my IPAC, little advice?

[releasedtruth]

Well, I'd made sure that all my controls were wired up correctly, but 1sw7 and 1sw8 on the IPAC won't register a key press no matter what's connected. That I certainly blame on the hardware. Secondarily, I'm noticing that not all my key presses are being registered and sometimes they're delayed. This is pretty much in any game. I checked all the wiring and things are tight so... Computer runs sliky smooth, etc. I'm perplexed, anyone else been here? Thanks

GT

[leapinlew]

I would figure in the year 2176 we wouldn't be using Ipacs. 

Have you done any troubleshooting?

Such as - have you tried to run any cables specifically on a known good switch on a dedicated ground to sw7 and sw8 on the ipac?

Looking at your picture, your wiring looks nice and clean:



The grounds are soldered and the rest were quick connects? My previous issues that were similar to yours involved a faulty ground. It would sometimes register and any buttons after the ground in the daisy chain wouldn't work at all. Tracing the problem I was able to determine my ground didn't have a proper connect and the ipac was fine.

[releasedtruth]

Haha, you're right! I think in 2176 we use IPAC 5000s, but I didn't bring one back from the future sadly. That's a good point with the ground. I did the single wire for cleanness sake, but I never thought it would cause me problems. I'm gonna try that passmark program next. Andy at Ultimarc is seriously quick to respond, great service thus far. I'll update as I figure this out. Other than the overrunning targets and some delayed presses, things are good!

GT

[AMDman13]

Correct me if I'm wrong but aren't sw7 and sw8 the inputs that aren't implemented in Mame by default? I know I had to set these up in (tab) settings?
Of coarse this doesn't account for your delayed button presses.

[Mark70]

I had ipac troubles.  It wouldn't shift.  And some button press issues.  Turned out I had a short.  I bent one of the quick connects installing the CP.  If I remember it was shorted to the common on another button or something, so it was basically registering a held down key all of the time.  It was on one of the higher numbered buttons on the 2up side, so it was little used and I didn't notice it.

[AndyWarne]

Yes those controls which are un-assigned to any keystroke in MAME (P2 buttons 5 upwards) are a constant source of confusion! I wish the MAME devs would assign them by default!
Andy

[releasedtruth]

When it worked, I used 1SW7 as 'shift' and 2SW7 as shift-escape. It was real nice. Then I used  other buttons shifted as tab, ~, etc.  Dedicated shift buttons keep me out of trouble. Don't want to escape in the middle of a Streets of Rage battle. I'm going to figure this out with Andy's help, no doubt.

GT