Cycle stealing mode of DMA operation involves

• A. DMA-controlled taking on the address, data and control buses, while a block of data is transformed between memory and the I/O device
• B. While the microprocessor is executing a programme, an interface circuit takes control of the address, data and control buses, when not in use by the microprocessor
• C. The data transfer takes place, between I/O device and memory during every alternate clock cycle
• D. The DMA controller working for the microprocessor to finish execution of the programme and then takes over the buses