Honeywell Display Generator DMA 30732254-001 BD01. The Display Generator DMA Card (DG) controls the flow of data between the Display Generator and memory. This card requests from the CPU on the data bs and memory holding data. When CPU gives approval the DG gathers data from memory and sends it over the Display Generator Card. When finished the DG then releases the data bus and memory location. The CPU then takes over. This board has no jumpers of LEDs.