MiSTer FPGA Forum

The files are on the MiSTer harware git https://github.com/MiSTer-devel/Hardware_MiSTer/tree/master/Addons/MT32PiHat_LT Sorry to dig up an old thread, but how did you use the PCB files in the Github repo to produce Gerber files? The files in the repo dont seem recognized by any of the PCB manufacturers. Thanks in advance. I built a mt32pi_lite. I u...

Do you see it in the OSD in the Ao486 core?

In my, limited experience, flux helps solder flow better and stick where I want it to stick. When I'm soldering small contacts that are close together it helps to prevent a solder bridge between them. It may not needed but It has helped me.

Here's an example,
https://www.youtube.com/watch?v=9SboSxxRpfY

Here's the USB board Data coming down from the DE10Nano to the header and power going to the underside of the board to the barrel connector qG45AFA.jpg Then on the DE10 Nano the micro usb port has been de-soldered and the data lines soldered. A new barrel connector installed (you can see it in the upper left) that goes to a push button (its in the ...

I totally did this and took the opportunity to wired in a power button too. Flux is key in my experience. I removed the micro usb port on the DE10 under it the pad are surface mount but they are large enough to do pretty easily. On the USB hub there are through holes you can solder pins into and use a 4 pin connector to make it easier to remove. If...

If you say that this seems to work, do you mean that you are now getting sound from the MT32 pi? Yeah for sure I'm getting sound. And thank you for pointing me in the right direction. I'm just not sure what that fix does. I looked for a reference to IO6 in the documentation for the MT32 or on the schematics for the 5.5 and 5.6 i/o board since its ...

Ok so cutting the trace after C7 and jumping the usb pin that would have connected to that trace with a 100ohm resistor to to pin 10 on the board seems to work.

@d.ti: I did not, I will read up on this. So far the only modification to my I/O board are the six 10K pull-up resistors R39 to R44. For VCC on that I used the 3.3 on VGA pwr. lYeGNAN.png In other news, it did work on my friends 6.1 digital I/O board so I know the MT32pi is built and configured right. I've just got to get my I/O port sorted.

I couldn't test pwm because my Pi doesn't have a headphone jack, but I set output to HDMI, which outputs over the hdmi of the pi and that works. So i know the Pi is working. I don't have any snac stuff, this is my first time using the user port, but that I'm getting audio over HDMI gives me hope.

I could try a different resistor, I have tried no resistor. Every troubleshooting step I have tried yields the same result I get the OSD I see that the bars are moving and the instruments are named, the MiSTer controls it, i just don't get MIDI sound the rest of the effects work. When I turn my audio all the way up I do hear a brief audio pop when ...

Thank you for the suggestion. I did load up the x68000 core and Akumajou Dracula, I experience the same behavior, the MT32Pi is seen, the osd shows the Midi is getting to the MT32 because I can see the bars moving and instrument names. But the audio isn't making it back to the mister or isn't getting mixed into the HDMI.

I built a mt32pi_lite. I used the Gerbers from the release and put it all together and I'm not sure where to go from here. It appears in the ao86 core. the OSD works I see the bars moving. I have the setting for i2s as the output but I'm getting no sound. I am using the 5.5 Analog I/O board, and per the suggestion on the Git I tried added a bank of...

Did some rework on my MiSTer. routed the power cables for the USB hub and DE-10 internally, and added a single connector for power. Connected all that to a button so I can power it on and off. Also added a badge from etsy. Feels a nicer without the cables looping around the case.