If a thirty-two bit word can represent a MIPS instruction. How can we tell if that instruction is of type R, J, or I?
I’m having a hard time understanding these concepts, I think the opcodes might be different?
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If a thirty-two bit word can represent a MIPS instruction. How can we tell if that instruction is of type R, J, or I?
I’m having a hard time understanding these concepts, I think the opcodes might be different?
Basically MIPS instructions have an opcode stored in the most significant 6 bits which specify the format of the following bits. In particular, R-type instructions always have an opcode of 000000 (with the instruction functionality then further specified by the 6 least significant bits.
MIPS Instruction Coding