assembly
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Question
langueage : assembly pic18
Transcribed Image Text:Suppose x is declared as unsigned char. The following code swaps low and high nibbles of PORTD
O a. X = PORTD^OF;
PORTD= PORTD<<4;
PORTD = PORTD|x;
O b. x=PORTD^0XFO;
PORTD = PORTD>>4;
PORTD = x^PORTD;
%3D
O. X = PORTD<<4;
PORTD=PORTD>>4;
PORTD=x|PORTD;
O d. X = PORTD^0XOF;
PORTD = PORTD^0XFO;
PORTD = -(x|PORTD);
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