var中存储的数据，PROCESSOR_ARCHITECTURE存储的内容
@echo off
for /f "tokens=1* delims=[" %%a in ('ver') do set b=%%b
set b=%b:* =%
goto %b:~0,4%%PROCESSOR_ARCHITECTURE:~-1%
:5.1.6
echo xp_32位
goto:eof
:6.1.6
echo win7_32位
goto:eof
:6.1.4
echo win7_64位
:6.0.6
echo vista_32
exit
:6.0.4
echo vista_64
exit