NOTE: Sorry, I had to correct my previous post, with the rush I did not do the calculations well. Thanks for your quicker response and complete @Kannagi: "SH or MIPS are general processors, the advantage of MIPS is that we could add a coprocessor." So on PS1, the coprocessor is the GTE an...

Thank you, Thank to you, 1) So, yes, the PS1 has an instruction about it, it serves for the "Backface culling" It's true, just discover it a little before you see your answer. The GTE costs this instruction 6 8 cycles. According to my calculations in SS would be 15 cycles. I suppose that ...

Hello @Kannagi, First of all congratulate you for your project and great work. It is immense and at the same time super interesting and useful. I did not want to bother you very much, I just have some questions to ask you first about this: "On Dreamcast, there is no cross product in hardware, I...