Situation:

You want to run different task (application install / registry edition / copy to another path / …) depends on processor architecture. You must to determinate that what is the maximum addressable length of target processor so in short: It is 32-bit (x86) or 64-bit (x64) processor?

Solution:

Here you can find a working windows batch which will run your declared command depends on processor architect.

title CH-E-MISTRY

cd /d %~dp0

rem Created by Mikáczó Péter (solve CPU-bit detection task)
rem Theory of operation:
rem IF PROCESSOR_ARCHITECTURE == amd64 OR
rem PROCESSOR_ARCHITEW6432 == amd64 THEN
rem // OS is 64bit
rem ELSE
rem // OS is 32bit
rem END IF - QUIT

if %PROCESSOR_ARCHITECTURE% == x86 (
goto :wow64
) else (
goto :x64
)

:wow64
if %PROCESSOR_ARCHITEW6432% == NOT DEFINED THEN (
goto :x86
) else (
goto :x64
)

:x86
echo The Operating System is 32bit version
setupx86HUN.cmd
goto :exit

:x64
echo The Operating System is 64bit version
setupx64HUN.cmd
goto :exit

:exit
quit

How to use it:

• The name of it is not important, but the extension of it must to be .cmd
• You must to edit two thing for your need: The task what you must to start in x86-case (setupx86HUN.cmd)  & in x64-case (setupx64HUN.cmd).

Of course you can embed more batch, like in our case (the main batch start an another batch as task).