techlibs/ecp5/dram.txt

   1 bram $__TRELLIS_DPR16X4
   2   init 1
   3   abits 4
   4   dbits 4
   5   groups 2
   6   ports  1 1
   7   wrmode 0 1
   8   enable 0 1
   9   transp 0 0
  10   clocks 0 1
  11   clkpol 0 2
  12 endbram
  13
  14 match $__TRELLIS_DPR16X4
  15   make_outreg
  16   min wports 1
  17 endmatch