The MC6844 Direct Memory Access Controller could transfer data from an I / O controller to RAM without loading down the MC6800 microprocessor.
2.
Integrated analogue functions including 16 channels of 10-bit ADC, 2 channels of 10 bit DAC . Also included are on-chip peripherals of Direct memory access controller ( DMAC ), Data transfer controller ( DTC ), 16-bit timer pulse unit ( TPU ) ?12 channels, 16-bit compare match timer ?4 channels, 8-bit timer ( TMR ) ?4 channels.