现有一子程序： SUB1 PROC PLUS：TEST BL，80H TEST AL，80H JE EXITO JE PLUS XCHANGE：XCHG AL，BL TEST BL，80H EXITO：RET JNE EXITO SUB1 ENDP JMP XCHANGE 试回答：（1）子程序的功能是什么？ （2）若调用子程序前AL=9AH，BL=77H，则返回主程序时，AL=______，BL=______。
! ! SYS_SIZE is the number of clicks (16 bytes) to be loaded. ! 0x3000 is 0x30000 bytes = 196kB, more than enough for current ! versions of linux ! SYS_SIZE 是要加载的节数（16 字节为1 节）。0x3000 共为 1 2 3 4 5 6 0x7c00 0x0000 0x90000 0x10000 0xA0000 system 模块 代码执
This is a book for the computationalist, whether a working programmer or anyone interested in methods of computation. The focus is on material that does not usually appear in textbooks on algorithms. Where necessary the underlying ideas are explaine
