I would need mango pi mq pros I can buy with a noscript/basic (x)html browsers or a local retail shop, then time, a significant amount. I am currently on a biggy project which will take me months to wrap up (but it starts to get on my nerves... I might send it to hell)
Ofc, this firmware would be bare metal. Not jocking around. For the moment, I am a bit scared at porting to human assembly the SOC and board init code.
The only non-open source programs I know of are elf/linux video games and the steam client.
Very good to hear, especially if it is open source and performs well (low latency and low jitter).