Offset: $024 Access: write Chipset: OCS/ECS/AGA
Arms disk DMA, selects transfer direction, and sets the word count.
Bitfields¶
Bit 15: DMAEN. Write the enabled value twice to start DMA; clearing this bit disarms it.
Bit 14: WRITE, 1 for disk writes and 0 for reads.
Bits 13-0: Transfer length in 16-bit words.
DMACON must also enable master and disk DMA. ADKCON.WORDSYNC can defer reads until DSKSYNC matches.