I recently picked up some DS devkits and I just finished sticking one of Tim's N64RGB pcbs into a Fat IS-Nitro-Emulator. The fat version uses two MAV-NUS video encoders, one for each output. So it's a pretty straight forward install. Just did it to see if it was possible (and so I can do some capture tests vs GBI.) Currently I'm having problems installing a second RGB board to the second MAV-NUS for AV2, I'm not sure if it's a clk problem or interference problem on the data lines. (Mostly dealing with a heavily yellow tinted picture which seems like a clk problem, each MAV-NUS shares the same clk signal) I also have a DS Lite dev kit which uses the AVE N-DOL and I'll try out a gcvideo install sometime in the future. If you want to do this yourself all dev kits are capable of video output, it's purely locked by software, you can use this to enable video. https://nsmbhd.net/thread/4438-nintendo-ds-dev-hardware-is-nitro-emulator-and-co/?from=60 Some pics from the RGB modded DS, in the process of moving so capture will be a bit.
I remember discussing this with members on here in the past but I never thought I'd see someone try it. It looks absolutely gorgeous! I can't wait to hear back about your GCVideo install in the other unit! Good luck to fixing the AV2 part and with the GCVideo install!
how do you get games to run on these? looked up a while back and ppl were saying that they only run games off the dev carts
Nice work! What signals are shared by both MAV chips? Perhaps the two N64RGBs are loading the current output of whatever is providing the clock. i.e. the input impedance is too low. You could try a video bandwidth voltage buffer, or simply removing the MAV chips. Was planning on using the N64RGB on my unit until i realized it had the DOL chips. Can’t seem to find a way to purchase the gcvideo though :/ Anybody got ideas?
GCVideo is open source. You could attempt to build and install the original analog board designed by Unseen or try GCDual without the QSB. Those two along with BAC's GCVideo analog board seem to be the only analog kits on the market so far.
I actually have two IS-Nitro units. One built on N64 Hardware and the other on GC. I plan on making the GC unit first. Will do a custom QSB, I'm sure (I have not opened the units up yet though). I won't have time to mess with it until hopefully first of the year.
I was referring to the analog video board by BadassConsoles. Their site is pretty broken. Not sure what you mean by QSB
Quick Solder Board. In the case of GCDual, it is the board that sits on top of the Analog AV and Digital AV port pins on the underside of the motherboard. I'll be looking forward to seeing how that QSB turns out! Do keep us posted!
I wonder if the Nitro produces the 54MHz signal necessary for the gcvideo. If not, maybe we can double the 27MHz frequency on the DOL chip...
Probably won't need it as GCVideo works fine in 240p and 480i modes where that signal is inactive iirc. That signal is only active in 480p+ modes on a GC AFAIK.
GCVideoDVI (Not sure how different GCVideo Lite is) is setup to use a 54Mhz, the FPGA creates a few clock signals from this. Take a look at ClockGen.vhd. I'd look into building the 54Mhz signal, so line-doubling would still work.
Ah, I thought it wasn't in use during 240p/480i, my apologies. How would one go about building that signal?
If it’s a square wave then we could use a modified version of this circuit. The maxim chip is an ultra-fast comparator, and could be substituted with something that has less or equal propagation delay (5ns) https://www.maximintegrated.com/en/app-notes/index.mvp/id/3327 If it’s a sine wave then maybe something like this: https://sites.google.com/site/inter...circuits/frequency-doubler-oscillator-circuit You mean the nitro firmware or the gcvideo firmware? Also, still can’t figure out how to buy the analog gcvideo board from BAC :/
