MICROPROCESSOR

 256

 512

 65536

 64

 Data transfer takes place between the I/O device and memory during every alternate clock cycle

 While the microprocessor is executing a program an interface circuit takes over control of address, data, control buses when not in use by microprocessor

 The DMA control waiting for the microprocessor to finish execution of the program and then takes over the buses

 DMA controller taking over the address, data and control buses while a block of data is transferred between memory and I/O device

 all interrupts except non-maskable interrupt are disabled

 the microprocessor can be interrupted by a non-mask able interrupt

 the microprocessor cannot be interrupted by any mask able interrupt

 the microprocessor cannot be interrupted by any interrupt

 None

 8085 uses I/O mapped I/O, whereas 6800 uses memory mapped I/O

 8085 has multiplexed bus, whereas 6800 does not have

 8085 has 5 interrupts lines, whereas 6800 has only two

 TRAP

 RST 5.5

 INTR

 RST 7.5