Microprocessor In 8085 microprocessor system with memory mapped I/O, which of the following is true? Devices have 8-bit address line Devices are accessed using IN and OUT instructions Arithmetic and logic operations can be directly performed with the I/O data There can be maximum of 256 input devices and 256 output devices Devices have 8-bit address line Devices are accessed using IN and OUT instructions Arithmetic and logic operations can be directly performed with the I/O data There can be maximum of 256 input devices and 256 output devices ANSWER DOWNLOAD EXAMIANS APP
Microprocessor How can we make any bit of a register “0”? AND that bit with “1” and remaining bits with “0”. OR that bit with “1” and remaining bits with “0”. OR that bit with “0” and remaining bits with “1”. AND that bit with “0” and remaining bits with “1”. AND that bit with “1” and remaining bits with “0”. OR that bit with “1” and remaining bits with “0”. OR that bit with “0” and remaining bits with “1”. AND that bit with “0” and remaining bits with “1”. ANSWER DOWNLOAD EXAMIANS APP
Microprocessor At the beginning of a fetch cycle, the contents of the program counter are transferred to address bus. transferred to memory data register. incremented by one. transferred to memory address register . transferred to address bus. transferred to memory data register. incremented by one. transferred to memory address register . ANSWER DOWNLOAD EXAMIANS APP
Microprocessor During the execution of the instruction, the ________tests the status and control flags and updates them based on the results of executing the instruction. Both ‘c’ and ‘d’ Execution Unit (EU) None of these Bus Interface Unit (BIU) Both ‘c’ and ‘d’ Execution Unit (EU) None of these Bus Interface Unit (BIU) ANSWER DOWNLOAD EXAMIANS APP
Microprocessor The number of status flags present in 8085 microprocessor are 10 16 5 8 10 16 5 8 ANSWER DOWNLOAD EXAMIANS APP
Microprocessor DS directive in 8085 Forces the assembler to reserve a specified number of bytes in the memory Forces the assembler to reserve a specified number of consecutive bytes in the memory Forces the assembler to reserve one byte of memory None of these Forces the assembler to reserve a specified number of bytes in the memory Forces the assembler to reserve a specified number of consecutive bytes in the memory Forces the assembler to reserve one byte of memory None of these ANSWER DOWNLOAD EXAMIANS APP
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