If the instruction used is LDUR, how is its opcode stored in binary? (LEGv8)
Added by Michael R.
Step 1
The LDUR instruction is an immediate load instruction that uses a specific encoding format. Show more…
Show all steps
Your feedback will help us improve your experience
Akash M and 97 other AP CS educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
Task 2: Translate the following machine code instructions to LEGv8 Assembly code: 11010010100000000001000000000010 11010010100000000001110011100100 11001011000000100000000010000101 D360 0CA5
Akash M.
Question 1: Consider an LEGv8 processor with a pipelined implementation consisting of five stages: 1. IF: Instruction Fetch 2. ID: Instruction Decode 3. EXE: Execution 4. MEM: Memory Access 5. WB: Write Back Write operations occur in the first half of the clock cycle, and reads occur in the second half of the clock cycle. The table below shows the pipelining diagram for three instructions: Inst/CC 1 2 3 4 5 6 7 8 Inst. 1 IF ID EXE MEM WB Stall Inst. 2 IF ID EXE MEM WB Inst. 3 IF ID EXE MEM WB Where CC stands for clock cycle, stalls are shown as empty rows, and forwarding is indicated between associated stages using an arrow. LDUR X0,[X0, #0] ADD X1,X0,X0 SUB X2,X1,X2 ADD X3,X2,X3 SUB X4,X1,X3 a. First, assume forwarding is not available. Show a similar table for the above sequence of instructions and indicate stalls with empty rows. How many cycles are needed to execute the above sequence of instructions? b. This time, assume that forwarding is available. Show a similar table for the above sequence of instructions and indicate stalls with empty rows and forwarding with arrows. How many cycles are needed to execute the above sequence of instructions?
What value is in register 2 after instruction 2 executes? (Refer to the textbook discussion on machine language and Vole instruction formats. Also refer to the Brookshear Machine PowerPoint in the Weekly Modules for help on interpreting the instructions). Instruction Number Instruction 0 0x2102 1 0x2205 2 0x3203 3 0x1103
Recommended Textbooks
Computer Science and Information Technology
Introduction to Programming Using Python
Computer Science - An Overview
Transcript
18,000,000+
Students on Numerade
Trusted by students at 8,000+ universities
Watch the video solution with this free unlock.
EMAIL
PASSWORD