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Something is there indeed Not quite in yet as it needs to get through code review first, but very likely that MPU1 will appear in this month's MAME

Amazing progress @SomeRandomGuy, some FME firsts happening over there! I've had some other stuff on, but have still been chipping away at the MAME layout builder/config extractor thing... current task is getting the correct number of rows and arranging the MAME text to best make use of the rows, as a lot of existing classic layouts rely on MFME's internal wrapping, along with many different fonts/dimensions, so a slight bugger to figure out: ...where the text has no 'hard return' characters but should be spread across several rows, like the 3 row box above. Have a fuzzy system that pretty much works (apart from a few edge cases to deal with): So I'm on the home stretch with this task I think Need to get string width of a similar font in unity, and then a routine to optimally split up the words and I can switch over to using it.

Sure, i've made a jpg wiring diagram of my system. See attached. The relays I used are HL-52s which are easily available from ebay or amazon etc. They are powered / grounded from the 5v / gnd pins in the centre of the ipac labelled for trackball. You can see the pacdrive will first send the payout signal to the relay (green wire), which will then close the 12v circuit and power the hopper (red / orange wire), which then sends a coin issued signal back to the other relay (blue wire) which closes the circuit and signals the ipac (yellow wire) and that generates the required [ or ] to acknowledge the coin. Hope that helps. Shout me for any questions and If i can help, I will cheers