What are Hi and Lo in MIPS?
The multiply unit of MIPS contains two 32-bit registers called hi and lo. These are not general purpose registers. When two 32-bit operands are multiplied, hi and lo hold the 64 bits of the result. Bits 32 through 63 are in hi and bits 0 through 31 are in lo.
How do you do division in MIPS?
To divide, use div for signed division and divu for unsigned division. In this case, the HI special register will hold the remainder and the LO special register will hold the quotient of the division.
What does MFHI mean?
mfhi means “move from HI” to the destination register. mflo means “move from LO” to the destination register.
What does Mflo mean in MIPS?
move from
1. and mfhi and mflo stand for “move from” HI/LO (source: mrc.uidaho.edu/mrc/people/jff/digital/MIPSir.html)
What does SW do in MIPS?
Two of the basic operations available to programmers are the Store Word (SW) and Load Word (LW) commands. These commands are used to retrieve (load) and save (store) values from specified memory locations.
What is Ori in MIPS?
ORI — Bitwise or immediate Description: Bitwise ors a register and an immediate value and stores the result in a register.
What does Ori mean in MIPS?
What is LW and SW in MIPS?
The MIPS instruction that loads a word into a register is the lw instruction. The store word instruction is sw . Each must specify a register and a memory address.
What does .word mean in MIPS?
A word generally means the number of bits that can be transferred at one time on the data bus, and stored in a register. In the case of MIPS, a word is 32 bits, that is, 4 bytes. Words are always stored in consecutive bytes, starting with an address that is divisible by 4.
Where can I find information about MIPS Hi and LO registers?
The incomplete integer instruction-set reference (linked in the question) for early MIPS also has some details, http://www.mrc.uidaho.edu/mrc/people/jff/digital/MIPSir.html, or see MIPS’s official PDF manuals, or PDFs of manuals for classic MIPS CPUs. HI and LO are not numbered registers, IIRC.
How does the MIPS R4000 perform multiplication and Division?
The MIPS R4000 can perform multiplication and division in hardware, but it does so in an unusual way, and this is where the temperamental HI and LO registers enter the picture. The HI and LO registers are 32-bit registers which hold or accumulate the results of a multiplication or addition. You cannot operate on them directly.
What is integer division in MIPS?
Integer Division in the MIPS Assembly Language. The generic form of the div (signed integer division) and divu (unsigned integer division) instructions is: div and divu belong to the Arithmetic Core Instruction Set and are R-type instructions where $Rd, the destination register, does not appear.
What are participation options in MIPS?
“Participation options” refers to the levels at which data can be collected and submitted, or “reported”, to CMS for MIPS. There are 4 participation options–MIPS eligible clinicians can participate in MIPS as an individual, group, virtual group, or as an APM Entity.