ex6_2.ibm

来自「汇编编程艺术」· IBM 代码 · 共 22 行

#repetitions 1280000
#unravel 16

#code ("shl by 8")
%do
		rept	8
		shl	ax, 1
                endm
#endcode
#code ("shl 8 by mov")
%do
		mov	ah, al
		mov	al, 0
#endcode
#code ("shl 8 by immediate mode")
%init
		.286
%do
		shl	ax, 8
#endcode
#end