a) What does the following code do: a>b, a-b or a <-b? asm volatile( X "Idi %B0, 0 \n\t" //set the high byte of the result, always 0 "cp %A2%A1 \n\t" //compare the low byte of b against a "cpc %B2%BI \n\t" //compare the high bytes with the carry "brge then%\n\t" "Idi %A0, 0 \n\t" //pass back true "rimp over%\n\t" //jump over the then "then%: Idi %A0,1 \n\t" //pass back false "over%: Idi %B0, 0 \n\t" "d" (result) //output list : "d" (a), "d" (b) //input list //clobber list b) Complete the code to do ab, but you must use brne branch command! asm volatile( "Idi %B0, 0 \n\t" //set the high byte of the result, always 0 "cp %A2%A1 \n\t" //compare the low byte of b against a "cpc %B2,%B1 \n\t" //compare the high bytes with the carry "brne : "d" (result) //output list : "d" (a), "d" (b) //input list //clobber list

a) What does the following code do: a>b, a-b or a <-b? asm volatile( X "Idi %B0, 0 \n\t" //set the high byte of the result, always 0 "cp %A2%A1 \n\t" //compare the low byte of b against a "cpc %B2%BI \n\t" //compare the high bytes with the carry "brge then%\n\t" "Idi %A0, 0 \n\t" //pass back true "rimp over%\n\t" //jump over the then "then%: Idi %A0,1 \n\t" //pass back false "over%: Idi %B0, 0 \n\t" "d" (result) //output list : "d" (a), "d" (b) //input list //clobber list b) Complete the code to do ab, but you must use brne branch command! asm volatile( "Idi %B0, 0 \n\t" //set the high byte of the result, always 0 "cp %A2%A1 \n\t" //compare the low byte of b against a "cpc %B2,%B1 \n\t" //compare the high bytes with the carry "brne : "d" (result) //output list : "d" (a), "d" (b) //input list //clobber list

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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