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| Plotting a better "Multi-Jamma" |
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| 2600:
If all you are trying to do is the kick harness then the simplest method for you is diodes. Lots of diodes. |
| Numbski:
Hmm? What, just wire them all together, putting a diode inline on each one? |
| 2600:
Yes. You could also use something like HC4053 or HC245. There's other chips that would work, that's just off the top of my head. You might want to use an IC for the start buttons or coins if you have multiple boards on at the same time. |
| rusolinio:
You could use a 6in1 switch board, wire up the -5v lines to each slot, and use piggyback connectors on your cp buttons/switches to connect each of your kick harness'. http://www.jammaboards.com/store/6-in-1-multijamma-switcher-pcb/prod_250.html I'm doing exactly that with ki and ki2 boards in a ki2 cab. I do have an issue with not being able to power off the -5v line when not used, as ive soldered them to the underside of the 6in1 to each leg that requires it directly from the in cab psu. No issues as yet and the games work well, but the slots that have the -5v soldered to them are now only for games that require -5v. Is this what your after? Or am i way off the mark with what you want? |
| Numbski:
I think maybe you're onto it. The idea is to have one PSU, and multiple systems. I'm trying to be energy efficient (big freaking CRT notwithstanding), and it seems like a waste to have multiple PSU's powered up and boards fired up when not in use. Kick harness buttons are the major hurdle so far as I can tell - I'll spend a bit more time digging into your solution here in a bit when I'm not at work. :) |
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