From a quick glance that'd require tapping quite many pins. A separate Neo-Geo specific daughterboard which would combine and encode audio into I2S could do the job until/unless someone forks/creates a dedicated Neo-Geo digital AV mod.mikejmoffitt wrote:The main issue is for HDMI audio you have digital audio as well as analogue audio coming from the YM2610. It would maybe be easier to just reimplement the SSG portion of that chip in HDL and tap the bus, to avoid having to do ADC.
Getting a good connection on the bottom pad is hard as its underneath area is part of a big ground plane, but it's crucial as without it the FPGA doesn't work reliably or at all.xterc wrote:I have a question regarding how to hand-solder the ground (41) underneath the FPGA. I placed solder in the hole exposed underneath the board, but I've a feeling this isn't how you are supposed to do it (see picture above).
I've a feeling this board isn't going to work due to my soldering skills, but it has been an education nonetheless.
Schematic was finished a few weeks ago, now I just have to complete the layout. There's also been a different ideas to help installation, one suggested by DewmanSNK on the previous page and one with a helper PCB around M5M RAM chips.cr4zymanz0r wrote:Any update on the revised board?
.No, it's specific for the new board. Some features might be back-portable but considering the limited number of original boards in use, it's probably not worth the effort.xterc wrote:Sounds awesome. Will the new firmware work on the original board?
This board gets installed in the A (system) board. Only the B (game) board has the round hole plugs.The Spaniard wrote:I can see why you made the board stick out to the side for the HDMI port but I would have preferred to have run the HDMI cable out one of the round plug holes rather than having to cut the case up to fit it.
Any chance of a revision where this wont be necessary?
Nonetheless I still think this is great mod, what will the price be on one of these?
Haha ok my bad. Had my mind thinking of the B board and installing the multi so didnt even think about it being installed on the A board.undamned wrote:This board gets installed in the A (system) board. Only the B (game) board has the round hole plugs.The Spaniard wrote:I can see why you made the board stick out to the side for the HDMI port but I would have preferred to have run the HDMI cable out one of the round plug holes rather than having to cut the case up to fit it.
Any chance of a revision where this wont be necessary?
Nonetheless I still think this is great mod, what will the price be on one of these?
-ud
I intend to (targeting late this year/early next year).cr4zymanz0r wrote:Are there any plans for anyone to sell these pre-assembled? I'm awaiting the 'release' of it, but I'm skeptical that I could solder in the FPGA.
Yeah we're working on it at the moment too, just waiting on some quotes.Are there any plans for anyone to sell these pre-assembled? I'm awaiting the 'release' of it, but I'm skeptical that I could solder in the FPGA.
That requires a frame buffer, which the current implementation does not have. If it were implemented, it would add at least 1 frame of lag.shmupsrocks wrote:Would it make sense to include a display rotation feature here?
Yes, adding frame buffer would require a dedicated RAM chip and FPGA with more IO pins (basically a BGA which would be an annoyance for DIY builders).undamned wrote:That requires a frame buffer, which the current implementation does not have. If it were implemented, it would add at least 1 frame of lag.shmupsrocks wrote:Would it make sense to include a display rotation feature here?
-ud
10CL025YE144C8G FPGAs are currently sold out everywhere and new stock is assumed to arrive around Dec/Jan. By that time the HW should be final (is almost already) and then it could be put into manufacturing.KingSopz wrote:Anyone know when this wonderful product will be released?
