Microprocessor
The first machine cycle of an instruction is always

 An I/O read cycle
 A fetch cycle
 A memory read cycle
 A memory write cycle

ANSWER DOWNLOAD EXAMIANS APP

Microprocessor
Which of the following is not true during the execution of an interrupt service routine, which does not contain any EI instructions

 the microprocessor cannot be interrupted by any interrupt
 the microprocessor cannot be interrupted by any mask able interrupt
 the microprocessor can be interrupted by a non-mask able interrupt
 all interrupts except non-maskable interrupt are disabled

ANSWER DOWNLOAD EXAMIANS APP