What do you mean by Arithmetic shift left operation?

Back to the 2017 paper

Module 2: x86 Architecture, CPU Control, I/O, Memory System Design

20172m

What do you mean by Arithmetic shift left operation?

Worked SolutionAI Assisted

Arithmetic Shift Left:

Arithmetic shift left shifts bits left by one position, LSB filled with 0, MSB (sign bit) preserved to maintain sign in 2's complement. Effectively multiplies signed number by 2.

Example: 0101 (5) -> 1010 (10), 1101 (-3) -> 1010 (-6) [MSB kept as sign].

If sign changes after shift (overflow), result is invalid and overflow flag V=1. Same operation as logical shift left except sign handling.

Similar questions

MICROPROCESSORSExplain the data transfer instructions and arithmetic instructions with few examples.20206m COMPUTER ORGANIZATION & ARCHITECTUREWrite short notes on the following: - (a) Shift instructions20167m COMPUTER ORGANIZATION & ARCHITECTUREThe x86 architecture includes an instruction called decimal adjust after addition (DAA). DAA performs the following sequence of instructions: ``plaintext if((AL AND 0FH) > 9) OR (AF = 1) then AL ← AL + 6; AF ← 1; else AF ← 0; endif; if(AL > 9FH) OR (CF = 1) then AL ← AL + 60H; CF ← 1; else CF ← 0; endif. `` "H" indicates hexadecimal. AL is an 8-bit register that holds the result of addition of two unsigned 8-bit integers. AF is a flag set if there is a carry from bit 3 to bit 4 in the result of an addition. CF is a flag set if there is a carry from bit 7 to bit 8. Explain the function performed by the DAA instruction.202214m COMPUTER ORGANIZATION & ARCHITECTUREA computer has 16 registers, an ALU with 32 operations, and a shifter with 8 operations, all connected to a common bus system. (i) Formulate a control word for micro-operation. (ii) Show the bits of the control word that specify the micro-operation R4 \leftarrow R5 + R6.20227m

PreviousJustify the statement “Stack computer consists of an operation code only with no address field”.NextWhat do you mean by locality of reference?

Budget AppAndroid App

Pocketly on Android

Log daily food, travel, and hostel expenses instantly. Set monthly spending limits and see where your money goes without complex spreadsheets.

Install Pocketly