error:A3903U: Argument ARM7TDMI not permitted for option 'cpu'

I  have downloaded MDK534 for ARM procrossor as well as legacy packs and crated new microvision 5 project. Also created .asm file and when build target, that time i am getting error error:A3903U: Argument ARM7TDMI not permitted for option 'cpu'

Please help me how to resole this error

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