;实验11 ;把小写字母换成大写字母 assume cs:code , ds:data data segment db "Beginner‘s All-purpose Symbolic Instruction Code.",0 data ends code segment start: mov ax,data mov ds,ax mov si,0 call letterc mov ax,4c00h int 21h letterc: push ax push si fun: mov al,[si] cmp al,0 je f inc si cmp al,‘a‘ jb fun cmp al,‘z‘ ja fun add al,‘A‘-‘a‘;当然也可以用and al,11011111b mov [si-1],al jmp fun f: POP si POP ax RET CODE ENDS END start
王爽汇编实验十一
时间: 2024-10-16 17:42:28