CSE 220 Lecture Notes - Lecture 4: Reduced Instruction Set Computing, Mips Instruction Set, Operand
5 Feb 2017
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Recall that a computer"s architecture is the programmer"s view of a computer. The architecture is defined in part by its instruction set. These instructions are encoded in binary as the architecture"s machine language. Because reading and writing machine language is tedious, instructions are represented using mnemonics as assembly language. There are no such things as variables in assembly. Simple, similar instructions are easier to encode and handle in hardware. In mips, only simple and commonly used instructions are included. Smaller, simpler circuits will execute faster than larger more complicated ones that implement a complex instruction set. Like x86, mips cpus are used in real products, but mostly embedded systems like network routers. The mips architecture is simpler than x86 architecture, which makes the assembly language simpler and easier to learn. B, c: source operands (on which the operation is to be performed) A: destination operand (to which the result is written)
