精华区代码Revision-C版本[系列四]

;九九乘法口诀表
;作者：神vLinux飘飘


;Revision Declare Modified by zaixuexi
;*/ --------------------------------------------------------------------------------------
;*/ source:https://www.bc-cn.net
;*/ author:zaixuexi
;*/ date:  2011-11-28
;*/ email: asmedu@
;*/ revision declare:
;*/ 1.add self-estimated c source code.
;*/ 2.adjust all asm source code lower-case style.
;*/ 3.keep all original code designment.
;*/ 4.using tab alignment source code text.
;*/ --------------------------------------------------------------------------------------

;typedef unsigned char        uint8_t;
;typedef unsigned short int   uint16_t;
;typedef unsigned int         uint32_t;


stack segment stack
stack ends

data segment
    author db "Write by vlinux$"    ;const char *author = "Write by vlinux";
data ends

code segment
    assume cs:code,ds:data,ss:stack
_main:
    mov ch,1d               ;uint8_t op2 = 1;
_main_next_1:
    call _print_crlf        ;printf("\n");
    mov cl,1d               ;uint8_t op1 = 1;
_main_next_2:
    mov ah,0d
    mov al,cl               ;uint16_t operand = MAKEWORD(op1, 0);
    call _print_int         ;_print_int(operand);
    mov dl,42
    mov ah,2
    int 21h                 ;putchar('*');
    mov ah,0d
    mov al,ch               ;operand = MAKEWORD(op2, 0);
    call _print_int         ;_print_int(operand);
    mov dl,61
    mov ah,2
    int 21h                 ;putchar('=');
    mov ah,0d
    mov al,cl
    mul ch                  ;operand = MAKEWORD(op1 * op2, 0);
    call _print_int         ;_print_int(operand);
    call _print_tab         ;printf("\t");
    mov dl,ch           
    inc dl
    inc cl                  ;op1++;
    cmp cl,dl
    jne _main_next_2        ;if (op1 != (op2 + 1)) goto _main_next_2;
    inc ch                  ;else op1++;
    cmp ch,10d
    jne _main_next_1        ;if (op2 != 10) goto _main_next_1;
    call _print_crlf
    call _print_crlf        ;printf("\n\n");
    mov ax,data
    mov ds,ax
    mov dx,offset author
    mov ah,9
    int 21h                 ;puts(author);
    mov ah,4ch
    int 21h                 ;exit(0);
_print_int:                 ;void _print_int(uint16_t operand);
    push ax
    push bx                 ;static uint8_t;
    push cx
    push dx
    pushf
    mov cx,10000d           ;uint16_t divisor = 10000;
    mov bl,0d               ;flag = 0;
_print_int_next_1:
    cwd                     ;uint32_t dividend = MAKELONG(operand, 0);
    div cx                  ;uint16_t quotient = dividend  / divisor; uint16_t remainder = dividend  % k;
    push ax               
    push dx
    cmp al,0d
    jne _print_int_flag_1   ;if (!LOBYTE(quotient)) goto _print_int_flag_1;
    cmp bl,0d
    je _print_int_flag_2    ;else if (flag == 0) goto _print_int_flag_2;
_print_int_flag_1:
    mov ah,2
    mov dl,al
    add dl,48
    int 21h                 ;else putchar(LOBYTE(quotient) + 0x30);
    mov bl,1d               ;flag = 1;
_print_int_flag_2:
    mov ax,cx
    mov cx,10d
    cwd                     ;dividend = MAKELONG(divisor, 0); divisor = 10;
    div cx               
    mov cx,ax               ;divisor = dividend / divisor;
    pop ax
    pop dx
    cmp cx,1d
    jne _print_int_next_1   ;if (divisor != 1) goto _print_int_next_1;
    mov dl,al
    add dl,48
    mov ah,2
    int 21h                 ;else putchar(LOBYTE(quotient) + 0x30);
    popf
    pop dx
    pop cx
    pop bx
    pop ax
    ret
_print_tab:                 ;printf("\t");
    push ax
    push dx
    mov dl,9
    mov ah,2
    int 21h
    pop dx
    pop ax
    ret
_print_crlf:                ;printf("\n");
    push ax
    push dx
    mov dl,10
    mov ah,2
    int 21h
    pop dx
    pop ax
    ret
code ends
end _main