Question: I want in 8051 microcontroller Assembler Write the instruction/s to perform following operations, Mask bit D7of R2 Set upper three bits at address 30H Exchange

I want in 8051 microcontroller
Assembler I want in 8051 microcontroller Assembler Write the instruction/s to perform

Write the instruction/s to perform following operations, Mask bit D7of R2 Set upper three bits at address 30H Exchange the nibbles of R2

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