I’ve noticed that most documentation on the MIPS ISA is either hard to navigate or hard to read, and is also often inaccurate (particularly SLTIU, written as having the opcode 001001, which actually belongs to ADDIU). To remedy this, I’m making an interactive MIPS ISA table. I’m hoping to eventually add features like which version of MIPS the instruction was added in, and if deprecated, which version it was deprecated in. Here’s my progress so far.