The best replacement for dma is pio.

The best alternatives to dma are rated as following:
★★★★★  pio
★★★★★  msa
★★★  phd
★★  ata
★★  pio mode
★★  udma
★  ultra ata
★  cbsa
★  memory mapped io
★  serial ata
★  interrupt driven i o
★  sponsored access
  market maker
  ecn
  dsa
  d.m.a
  p10
  adi
  dma

Your alternative for dma is not listed? Suggest!
Speaking about dma, one probably shouldn't forget about spi.

Other search terms related to dma and their ratings are:
★★★★★ spi
★★★★ uart
★★★ 8085
You have in mind a companion for dma and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of dma in all years. Click on graph for more.
dma
pio
msa