qu 0x0d status equ 0x03 org 0x00 main movlw 0xff tris portb movlw 0x00 tris porta clrf porta start clrf left clrf right clrw btfss portb,7 goto bit6 movlw 0x08 addwf left,f bit6 btfss portb,6 goto bit5 movlw 0x0

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
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Make a system flowchart of this code. porta equ 0x05 portb equ 0x06 left equ 0x0c right equ 0x0d status equ 0x03 org 0x00 main movlw 0xff tris portb movlw 0x00 tris porta clrf porta start clrf left clrf right clrw btfss portb,7 goto bit6 movlw 0x08 addwf left,f bit6 btfss portb,6 goto bit5 movlw 0x04 addwf left,f bit5 btfss portb,5 goto bit4 movlw 0x02 addwf left,f bit4 btfss portb,4 goto bit3 movlw 0x01 addwf left,f bit3 btfss portb,3 goto bit2 movlw 0x08 addwf right,f bit2 btfss portb,2 goto bit1 movlw 0x04 addwf right,f bit1 btfss portb,1 goto bit0 movlw 0x02 addwf right,f bit0 btfss portb,0 goto check movlw 0x01 addwf right,f check movf left,w xorwf right,w btfss status,2 goto compare movlw 0x02 movwf porta goto start compare movf left,w subwf right,w btfss status,0 goto agreatb bgreatea movlw 0x01 movwf porta goto start agreatb movlw 0x04 movwf porta goto start end
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