Microprocessor At the beginning of a fetch cycle, the contents of the program counter are transferred to memory data register. transferred to address bus. incremented by one. transferred to memory address register . transferred to memory data register. transferred to address bus. incremented by one. transferred to memory address register . ANSWER DOWNLOAD EXAMIANS APP
Microprocessor The content of the A15-A8 (higher order address lines) while executing “IN 8-bit port address” instruction are all bits set (i.e. FFH) same as the content of A7-A0 all bits reset (i.e. 00H) irrelevant all bits set (i.e. FFH) same as the content of A7-A0 all bits reset (i.e. 00H) irrelevant ANSWER DOWNLOAD EXAMIANS APP
Microprocessor During OPCODE fetch the state of S0 and S1 is 01 10 00 11 01 10 00 11 ANSWER DOWNLOAD EXAMIANS APP
Microprocessor A microprocessor differentiates between op code, data/address at any time by its internal registers the stack pointer the program counter the sequence in which memory contents are fetched by it its internal registers the stack pointer the program counter the sequence in which memory contents are fetched by it ANSWER DOWNLOAD EXAMIANS APP
Microprocessor _____________is used to read the status of the hardware interrupts (RST 7.5, RST 6.5, RST 5.5) by loading into the A register a byte which defines the condition of the mask bits for the interrupts. EI DI RIM SIM EI DI RIM SIM ANSWER DOWNLOAD EXAMIANS APP
Microprocessor Each instruction in an assembly language program has the following fields 1. Label field 2. Mnemonic field 3. Operand field 4. Comment field What are the correct sequence of these fields? 2, 4, 1 and 3 1, 2, 3 and 4 2, 1, 4 and 3 1, 3, 2 and 4 2, 4, 1 and 3 1, 2, 3 and 4 2, 1, 4 and 3 1, 3, 2 and 4 ANSWER DOWNLOAD EXAMIANS APP
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