Homework3 - EE 4720 Problem 1 Homework 3 Due 2 October 2000...

Info icon This preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
What changes would have to be made to the pipeline below to add the DLX-BAM indexed addressing instructions (from homework 2). Hint: The load is easy and inexpensive, the store requires a substantial change. Add the changes to the diagram below, but omit the control logic. Do explain how the control logic would have to be changed. ! Indexed addressing. lw r1, (r2+r3) ! r1 = MEM[ r2 + r3 ]; sw (r2+r3), r4 ! MEM[ r2 + r3 ] + r4; sign ext. IR Addr 6..10 11..15 16..20 or 11..15 IR IF ID EX WB MEM IR IR A B IMM NPC ALU =0 Addr Data Data Addr D In +4 PC Mem Port Addr Data Addr In Mem Out B ALU MD For maximum pedagogical benefit solve the problem above before attempting this one. The integer pipeline of the Sun Microsystems microSPARC-IIep implementation of the SPARC V8 ISA is similar to the Chapter-3 implementation of DLX that is being covered in class. What are the stage names and abbreviations used in the microSPARC-IIep? Hint: This is really easy once you’ve found the right page. SPARC V8 includes indexed addressing, for example: ld [%o3+%o0], %o2 ! Load word: %o2 = MEM[ %o3 + %o0 ] st %o0, [%o1+%g1] ! Store word: MEM[ %o1 + %g1 ] = %o0 (Register %o0 is a real register, not a special zero register.) What are the differences between the micro- SPARC-IIep integer pipeline and the Chapter-3 DLX pipeline that allow it to execute an indexed store? Be
Image of page 1

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

View Full Document Right Arrow Icon
Image of page 2
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