This is QRV, an adaptation (and later re-implementation) of the famous QNX Neutrino 6.4 operating system to modern 64-bit hardware, aimed primarily at keeping the Transparent Distributed Processing in the system.
Key differences from the standard QNX 6.4:
- All code is 64-bit (LP64 model)
- re-organized source tree
- integration of startup into the same source tree
- (planned) configuration system, same as in Linux
- getting rid of callouts/callins/patchers
- simplifications in the scheduler, multicore-only
- Unix filesystem (taken from xv6)
- disk device driver (devb) for QEMU virtio (taken from xv6)
Observations and insights regarding this porting can be read in my blog: https://r-tty.blogspot.com
