2 - I nstr uction set Summar y I nstr ucti on F or mats...

Info icon This preview shows pages 1–11. Sign up to view the full content.

View Full Document Right Arrow Icon
I nstruction set Summary I nstruction Formats Operations Addressing Modes Programmers Registers
Image of page 1

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

View Full Document Right Arrow Icon
CONTROL LOGI C UNI T - Directs all hardware activity inside - Controls Fetch, Decode, Execute Cycle Macro/Micro I nstructions
Image of page 2
Example Microinstructions : Open/.Close a gate from Reg to a bus Transfer data along a bus Send timing signals Test bits within a register
Image of page 3

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

View Full Document Right Arrow Icon
Instruction Decoder IR PC MAR MDR R0 Rn-1 Y ALU Z Address Bus Data Bus CPU Bus A B Control Lines Clear Y
Image of page 4
CPU Operations Fetch a word from Memory Store a word into memory Reg Transfers Performing an ALU function
Image of page 5

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

View Full Document Right Arrow Icon
Fetching a word from memory : i. MAR (R1) ii. Read Signal iii. Wait for Memory-function- complete (MFC) signal iv. R2 (MDR)
Image of page 6
Storing a word into Memory: i. MAR (R1) ii. MDR (R2) iii. Memory write signal iv. Wait for MFC
Image of page 7

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

View Full Document Right Arrow Icon
Register Transfers: R2 R1 To enable data transfer between various Blocks connected to common bus provide Input output gating.
Image of page 8
R Ri n Rou t ALU Y Z Zout Zin Yin
Image of page 9

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

View Full Document Right Arrow Icon
Performing an Arithmetic or Logic Operation : i. R1 out , Y in ii. R2 out , Add, Z in iii. Z out , R3 in
Image of page 10
Image of page 11
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