text: ddmmaacc.hh -- Header File
  
  #iinncclluuddee <ssyyss/ddmmaacc.hh>
  
  The header  file ddmmaacc.hh holds manifest constants that  are used by routines
  that perform direct-memory access (DMA).
  
  _S_e_e _A_l_s_o
  ddeevviiccee ddrriivveerrss, hheeaaddeerr ffiilleess
  