01_ assembly Language (Basic format _ template)

calculate the 1+2+3+...+100 and

1 ;calculate the 1+2+3+...+100 and2DATA SEGMENT;Data segment Start3 SUM DW?4 DATA ENDS5 6CODE SEGMENT;Code Snippet Start7AssumeCS:CODE,DS:DATA8 START:  MOVAx,data9         MOVDs,axTen         XORAx,ax One         MOVCX, - A NEXT:   ADD, Ax,cx - LOOP NEXT -         MOVSum,ax the         MOVAh,4ch;4C function Call: Terminates the current program and returns the calling program -         INT21H -CODE ENDS;end of code snippet -END;End of Assembler program

Determines whether the unsigned number in the variable num is a prime

Program Requirements:

Write a assembler that determines whether the unsigned number in the variable num is a prime, and if it is a prime, output the character p to the screen, and if it is composite, output c to the screen.

Where num is given in the data segment.

Program Flow:

Code implementation:

1 ;write a assembler to determine if the unsigned number in the variable num is a prime,2 ;If it is a prime number, output the character p to the screen, and if it is composite, output c to the screen. 3 ;where num is given a reference in the data segment4DATA SEGMENT;Data Segment5NUM DW -6 DATA ENDS7CODE SEGMENT;Code Snippet8AssumeCS:CODE,DS:DATA9 START:  MOVAx,dataTen         MOVDs,ax;send a segment base of data segment to DS One         MOVSI,1    ;SI 16-bit source variable address pointer register A          - Back :   INCSI -         XORAx,ax the         XORDX,DX -         MOVAx,num -         CMPAx,si;Compare whether the divisor (NUM) and divisor (SI) are equal -         JZPrint_p;JZ equals then jumps +         DIVSI;a 32-digit number divided by 16-bit SI with DX and ax -         CMPDx0    ;the remainder is inside the DX, judging whether the remainder is 0 +         jnzBack;JNZ does not equal the jump A          at Print_c:XORDX,DX -         MOVClass'C' -         MOVAH,2 -         INT21H -         JMPEXIT;JMP unconditional Jump instruction -          in print_p:XORDX,DX -         MOVClass'P' to         MOVAH,2 +         INT21H -          the EXIT:   MOVah,4ch *         INT21H $ CODE ENDSPanax NotoginsengEND START

01_ assembly Language (Basic format _ template)