assume cs:code, ds:data
data segment
stra db 'welcome to masm1';16字节
strb db 'welcome to masm2'
strc db 'welcome to masm3',0
data ends
code segment
start:
call show_str ;显示字符串
call delay ;延时
call foregc ;改变前景色为红色
call delay
call roll_one ;屏幕上滚一行
call delay
call ...