ET355MicropocessorsTest1 Crossword
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Down:
1) What is the final result of Port 2 after the execution of the following program segment. MOV A, #91H ORL A, #1AH MOV P2, A2) Which of the following instructions is invalid?3) Which RAM memory space is used for the register bank 0?4) What is the final result in Port 1 after the execution of the following program segment? MOV A, #55H XRL A, #AAH MOV P1, A5) The DPTR is a(n) ______ register.6) Which of the following addressing modes describes the instruction MOV A, #95H?7) The DPTR is a(n) ______ register.12) After the following program is run, the carry bit flag is CY=0. Move A, #55H, ADD A, #AAH. T or F13) What is the final result in Port 1 after the execution of the following program segment? MOV A, #55H CPL A, MOV P1, A16) Which register contains the address of the instruction to be executed next? |
Across:
3) Which of the following is the address of the last ROM memory location in an 8051 that has 4K bytes of ROM?8) Upon reset, what is the content of the program counter register?9) LCALL is a _______ instructions.10) Which 8051 instruction is used to jump anywhere in a program?11) The instruction "DJNZ R5, OVER" can be used to repeat an action for a maximum of ______ times.12) The 8051 carry flag is set whenever?14) A microprocessor always has which of the following components on the chip itself?15) What is the final result in Port 1 after the execution of the following program segment? MOV A, #55H XRL A, #AAH MOV P1, A16) Which of the following registers can be used for register indirect addressing mode of "MOV A, @RX"?17) What is the final result in the accumulater following the execution of the following program segment? |
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