CEN64 Discussion Forums

How often do you have to sync the cores anyway? That is, how fast can some sync event, or any change of shared state, propagate from say the VR4300 to the RCP? Suppose that takes 10 VR cycles, couldn't you then record every such event in the VR thread for 10 cycles, and if any happened in that batch...

As the excellent description in the title says, I don't get anything rendered in the window. I poked around a little, and it turns out that in vi_cycle in vi/controller.c the variables hres and vres are always 0, which is because vi->regs[VI_H_START_REG] and friends are always 0 because they never g...

Just wondering: which repo is the current one? CEN64 or CEN64-backport? Both got commits recently. And wouldn't it be better to have the backport simply as a branch in the main repo?

Hey, I just wanted to compile the newest version with gcc 4.8. I did > cmake CMakeLists.txt > make clean > make and got a bunch of errors, all seeming to stem from /usr/lib/gcc/x86_64-linux-gnu/4.8/include/tmmintrin.h:31:3: error: #error "SSSE3 instruction set not enabled" Adding -msse4 to the compi...

I'm a bit confused, I thought the SSE instruction set provided exactly the IEEE 754 floats except for a few rounding modes.
So where is the advantage of using the x87?
And where is the difference from e.g. an x87 float add to one on the VR4300?

Does anybody know of more technical documents than those linked to here.

In particular, this seems very useful and to be a part of a larger document which I have however not been able to find online.