Box64 and RISC-V – Box86

DRANK

Box64 on RISC-VThe current development cycle of box64 (v0.3.1) has, amongst its objectives, to add Dynarec support for the RISC-V architecture. Using VisionFive2 as my dev. board (thanks StarFive!), I added some infrastructure and split some of the ARM64 Dynarec to create a common ground, and started added some opcode to the newly created Dynarec. I have then be quickly helped by two external contributers on github: ksco and xctan, who since then have pushed hundreds of opcode and helped debugging and finetunned the RISC-V Dynarec!At this point, the Dynarec is already quite complete (not as much as the ARM64 one, but largely usable), and things are now mostly running on it.The end result is games are now playable on the VF2, as I have show in a couple of videos already.Stardew Valley running on a VisionFive2 with Box64 and GL4ESCISC vs RISCBut before getting into the details of the Dynarec, let’s start by introducing x86_64 and RISC-V (and ARM64) ISA (Instruction Set Architecture).x8…