Computer Organization
Q122.
A hard disk with a transfer rate of 10 Mbytes/second is constantly transferring data to memory using DMA. The processor runs at 600 MHz, and takes 300 and 900 clock cycles to initiate and complete DMA transfer respectively. If the size of the transfer is 20 Kbytes, what is the percentage of processor time consumed for the transfer operation?Q123.
A CPU has two modes-privileged and non-privileged. In order to change the mode from privileged to non-privilegedQ124.
A device employing INTR line for device interrupt puts the CALL instruction on the data bus whileQ125.
An interrupt in which the external device supplies its address as well as the interrupt requests is known asQ127.
Which of the following devices should get higher priority in assigning interrupts?Q128.
The TRAP is one of the interrupts available in INTEL 8085. Which one of the following statements is true of TRAP ?Q129.
Which of the following statements about synchronous and asynchronous I/O is NOT true?Q130.
RST 7.5 interrupt in 8085 microprocessor executes the interrupt service routing from interrupt vector location