어셈블리어 과제_ 진종영

 

The formula for converting a Fahrenheit to a Celsius temperature is   C = (5/9) * (F - 32)  Write a complete 80x86 assembly language program to prompt for a Fahrenheit temperature  and display the corresponding Celsius temperature.

.386 .MODEL FLAT   ExitProcess PROTO NEAR32 stdcall, dxExitCode:DWORD   INCLUDE io.h   cr  EQU  0dh Lf  EQU  0ah   .STACK 4096   .DATA Prompt1        BYTE  CR,LF,"This program will convert"                    BYTE  "a Fahrenheit to a Celsius temperature ",cr,Lf,Lf                    BYTE  "Enter Fahrenheit temperature: ", 0 Value           BYTE  10 DUP (?) Answer        BYTE  CR,LF,"C =" Temperature  BYTE  6 DUP (?)                    BYTE  cr,Lf,0          .CODE _start: Prompt:                   ;C = (5/9) * (F - 32)                   output  Prompt1                   input  Value,  10                    atoi  Value                         sub  ax, 32                     ; ax = (F-32)             imul ax, 5                                     cwd                               ;ax 부호확장             mov  bx, 9             idiv  bx                           ;ax =  5*(F-32) /9                         itoa Temperature, ax             output Answer                INVOKE ExitProcess, 0 PUBLIC _start END

.386 .MODEL FLAT   ExitProcess PROTO NEAR32 stdcall, dxExitCode:DWORD   INCLUDE io.h   cr  EQU  0dh Lf  EQU  0ah   .STACK 4096   .DATA Prompt1         BYTE  CR,LF,"This program will convert a Celsius "                     BYTE  "temperature to the Fahrenheit scale",cr,Lf,Lf                     BYTE  "Enter Celsius temperature: ",0 Value            BYTE  10 DUP (?) Answer         BYTE  CR,LF,"The temperature is" Temperature   BYTE  6 DUP (?)                     BYTE  " Fahrenheit",cr,Lf,0          .CODE _start: Prompt:    ;F = (9/5)*C + 32  output  Prompt1  input  Value,  10  atoi  Value    imul  ax,  9                     ; C*9  add  ax, 2  mov  bx, 5  cwd  idiv  bx                         ; C*9/5  add  ax, 32                   ; C*9/5 + 32    itoa Temperature, ax  output Answer     INVOKE ExitProcess, 0 PUBLIC _start END