Here's a link to a demonstration video! GameBoy Color emulation at 60FPS, properly synchronized using the audio. Using a DisplayLink DL-165, a FullHD monitor, a USB audio card and a WiiClassic I²C controller.
Most of the CPU time is taken up by the routine that sends the framebuffer via USB. If that were not there, the CPU load would go down from 60% to about 26%. Which means that there's a lot of things to optimize here yet...
I'll go the 'X11 Xorg server' route for a while and see where that takes me :).
The solution I used was to build a custom firmware with USB support compiled in and with the omega dts file modified such as to enable the u-boot and u-boot-env partitions as read/write.
Then with the O2+ in a mini-dock and dumps of the u-boot and u-boot-env from my kickstarter O2+ on a USB, I flashed the O2+ with the modified firmware and just wrote the kickstarter copies to the relevant partitions.
It was a total hack, so I have no idea whether this worked by design or I was just lucky that it worked.
Note, the officially sanctioned way to replace the bootloader is via an ethernet expansion installed in an expansion dock as documented here Firmware Flashing With Web Recovery Mode and I'd recommend anyone try that first before doing what I did.
Further, note this useful clarification regarding the documented procedure by @Pavel-Metrokhin in Bootloader for Omega2S and Omega2S+
Building the Onion software at the time I did this (Feb 2018) was a hit and miss affair, which is why I did it the way I did.
Apologies for the late reply, somehow I managed to miss your question in the past.
@Yvan-Gagnon I've mentioned this a couple times in response to other posts and do not remember if one of those posts was yours, if so, I apologize for bringing it up again, but, it is possible to gain access to all the pins by using a female header with long pins. just insert the female header into each header of the mini dock and then insert [carefully] the omega2+ into the long pin female headers. this will leave all pins exposed that you can then use various methods to attach wires from your project to the appropriate pins. granted it is a "garage style" method and care must be taken to not damage the long pin headers, however it worked for any project i saw hooked up this way at a local hackerspace.
@David-Duffey Awesome project! Definitely 2-Bullet Tuesday worthy.
For your code, if you add a line with just three backticks ``` before and after your code, it will format it and usually do some syntax highlighting!
I succed to put the exec and read permissions for files and folders with the line option in fstab
"option options 'rw,sync,uid=65534,gid=65534,umask=0000'"
but it's impossible to put write permissions make import the umask.
I use nobody user's and nothing changes.
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