![]() Still, between the graphs and Dwedit's observation about polling, there may be some hope here. I still hold out a vague glimmer that sir_cuitous was simply seeing some bad aliasing on account of really really rapid polling, otherwise this thing may be even more of a monster than the Glove was to crack >_< I have hoped perhaps against hope that the serial comm would be as simple as latching and then reading a series of 1 bit per key. I finally got my hands on a Miracle (sans power supply, serial cable, and foot pedal, but all of those are trivially replaced). And the practical upshot is that if I can get this done, then at the very least schematics and firmware and/or code for this bad boy will be available to the NESing community at large before long. If anyone has hints, suggestions, or can point me in a better direction it would be super duper appreciated. It makes zero sense, in every conceivable situation, except the one where I'm trying to provide universal NES interface support. Figures I find literally the sole remaining niche purpose to hook up a really old keyboard using an even older interface when a completely perfect standard interface is literally built-in right next to it. ![]() Yeah, so now that I'm reflecting on what it is that I'm actually attempting here, it's not surprising that there's so little Miracle info around. I just simply don't have the equipment I need to tackle this problem. I assume it transmits and receives standard MIDI messages with the NES, and it's obviously bidirectional, so it remains to be seen what, if anything, this means special for the NES hardware. If nothing else I've confirmed for myself that the bundled DB25 -> NES adapter plug only connects pins to clock, latch, and the D0 line. In a nutshell, I need to figure out how to at least read the MIDI data from the Miracle Piano in the same fashion as a genuine NES. I'm attempting to reverse-engineer the details myself, but it's exceedingly difficult because: a.) my project itself lives on a rickety solderless breadboard, b.) my logic analyzer consists of the very basic 1 MHz 3-channel probe that comes built into the PICkit 2 (which is also extremely difficult to use for this purpose, hooking rigid little wires on small metal contacts inside an open NES chassis), and 3.) I'm starting to run into some time constraints / pressure to focus on other areas. The problem is that I can find very little information on the matter see here and here. The working prototype is sitting right here on a solderless breadboard, happily blinking away right next to my keyboard.Īnyway, I have come to the point where I'm looking at my old (NES-flavored) Miracle Piano Teaching System in an attempt to incorporate support in my code. ![]() It automagically detects what exactly you just plugged in (!), and it shows up on your computer in the appropriate device location, fully named and everything. Basically you plug your joypad / Power Pad / Power Glove / U-Force / Piano / whatever into one of the four ports on this little USB box, then bam, you instantly have a fully functioning and configured HID device available to your OS. (Irrelevant?) background: I'm working on a project that makes NES peripherals and accessories USB plug-and-play capable out-of-the-box.
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