• based on opcode (bits 31-26) and function code (bits 5-0) from instruction • ALU doesn’t need to know all opcodes--we will summarize opcode with ALUOp (2 bits): 00 - lw,sw 01 - beq 10 - R-format Main Control op 6 ALU Control func 2 6 ALUop ALUctrl 3 ALU control input Function Operations 000 And and 001 Or or 010 Add add, lw, sw 110 ... References: 1 Pat Anson. Weird Mushroom Could Lead to New Painkillers. Pain News Network. April 23, 2015. 2 Joseph Mercola, "Common Pain Relievers Are Causing Heart Attacks," May 24, 2017 www.mercola.com
Ben Eater is currently creating educational videos for my YouTube channel and exploring ways to maximize human potential through education online. He's recently become well known for creating an 8-bit CPU from scratch as well as a series on building a 6502 computer on a breadboard.