Showing posts with label logic. Show all posts
Showing posts with label logic. Show all posts

Wednesday, 16 March 2011

machine cycles of 8085 microprocessor

List the various machine cycles of 8085.

Each time the CPU executes an instruction, it takes a series of steps. The complete series of steps is called a machine cycle. A machine cycle can be divided into two smaller cycles. These are instruction cycle and execution cycle.

7 MACHINE CYCLES

Opcode fetch

Memory read

Memory write

I/O read

I/O write

interrupt acknowledge

sent back