techlibs/ice40/brams.txt

   1 bram $__ICE40_RAM4K_M0
   2   init 1
   3   abits 8
   4   dbits 16
   5   groups 2
   6   ports  1  1
   7   wrmode 0  1
   8   enable 1 16
   9   transp 0  0
  10   clocks 2  3
  11   clkpol 2  3
  12 endbram
  13
  14 bram $__ICE40_RAM4K_M123
  15   init 1
  16   abits  9 @M1
  17   dbits  8 @M1
  18   abits 10 @M2
  19   dbits  4 @M2
  20   abits 11 @M3
  21   dbits  2 @M3
  22   groups 2
  23   ports  1 1
  24   wrmode 0 1
  25   enable 1 1
  26   transp 0 0
  27   clocks 2 3
  28   clkpol 2 3
  29 endbram
  30
  31 match $__ICE40_RAM4K_M0
  32   min efficiency 2
  33   make_transp
  34   or_next_if_better
  35 endmatch
  36
  37 match $__ICE40_RAM4K_M123
  38   min efficiency 2
  39   make_transp
  40 endmatch