MiSTer FPGA Forum

for those that want to use the core with a non digital IO board, remove the "MISTER_DUAL_SDRAM" from the "Existing Verilog HDL macro settings" or set it to "0".

edit: never mind, I had not seen the post of Robert in the other thread before I posted this...he already pointed out how to do it.

I also think certain SD cards can cause noise on its own. MDFourier did a paper on the topic http://junkerhq.net/MDFourier/notes/MDF-Note07-SDCard-3.pdf Here a more easier to read breakdown for people https://www.retrorgb.com/mdfourier-sd-card-testing.html If the redbook audio popping by the OP is experienced over HDMI and optical, then this is pr...

the save size of 2 kB is normal for this game, saves do work for me with this game btw. maybe try manual saving to solve the issue?

here: https://github.com/jotego/jtbin/tree/ma ... 1/releases

Good read that paper on SD card noise, but if it would be caused by the SD card one would assume that the problem would also be present with the PC Engine core which for me is not the case during Redbook audio playback. Also the fact that it disappears once you rewind the tracks and isn't audible then kinda confirms that the problem is caused by so...

Try different versions of Main too. Although from the video linked in the original post it predates any of the chd work. I never noticed it in all the testing I did during the chd work, but I wasn't really listening for it either. I wonder if it might be related to SD card speed? One thing to try: does it persist if you convert the bin/cue to CHD?...

tried all 17 releases of the core all with the same result, tried it with some other games (final fight, terminator) and I could hear it there too. Too bad I don't have any verilog experience yet, otherwise i'd start tinkering away on my own. Also it's been almost 20 years ago that I played MegaCD games on real hardware, maybe it's been there all a...

Well that's interesting. I've got two MiSTers one with the USB storage the other just the SD, they both have that exact hitching that you have, which is definitely different to the issue I worked around that I mentioned in my other post. I swear it wasn't there before. Could this be a new issue in the more recent cores, I've ran out of time today ...

I've experienced the same issue with Ecco with the Mega CD core. Like you I tried switching audio output from HDMI, to analog to toslink and it was the same on all three sources. Unfortunately I don't have anything else to add, other than confirm your issue. Hey Fuzzy, thanks for confirming that the issue is not a local issue. I think i'll report ...

Hey all, sorry for the long post but recently i've been playing some games on the MegaCD core and i've experienced some audio issues with Redbook audio playback. For example while playing Ecco the Dolphin (the USA version) i was hearing some noticeable audio popping with the Redbook audio. Below you can listen to a recording of what i was hearing: ...