Lista_Topico_4 - EA960 Organizao de Computadores Prof Levy...

Info icon This preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
EA960 Organização de Computadores Turma A Prof. Levy Boccato Exercícios Sugeridos 1. (4.2) The basic single-cycle MIPS implementation in Figure 4.2 can only implement some instructions. New instructions can be added to an existing Instruction Set Architecture (ISA), but the decision whether or not to do that depends, among other things, on the cost and complexity the proposed addition introduces into the processor datapath and control. The first three problems in this exercise refer to the new instruction: Instruction: LWI Rt,Rd(Rs) Interpretation: Reg[Rt] = Mem[Reg[Rd]+Reg[Rs]] a) Which existing blocks (if any) can be used for this instruction? b) Which new functional blocks (if any) do we need for this instruction? c) What new signals do we need (if any) from the control unit to support this instruction? Figura 4.2 2. (4.4) Problems in this exercise assume that logic blocks needed to implement a processor’s datapath have the following latencies: a) If the only thing we need to do in a processor is fetch consecutive instructions (Figure 4.6), what would the cycle time be? b) Consider a datapath similar to the one in Figure 4.11, but for a processor that only has one type of instruction: unconditional PC-relative branch. What would the cycle time be for this datapath? c) Repeat b), but this time we need to support only conditional PC-relative branches.
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
EA960 Organização de Computadores Turma A Prof. Levy Boccato DICA:
Image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern