techlibs/ice40/brams_init.py

   1 #!/usr/bin/python
   2
   3 from __future__ import division
   4 from __future__ import print_function
   5
   6 def write_init_vh(filename, initbits):
   7     with open(filename, "w") as f:
   8         for i in range(16):
   9             print("localparam [255:0] INIT_%X = {" % i, file=f)
  10             for k in range(32):
  11                 print("  %s%s" % (", ".join(["INIT[%4d]" % initbits[i*256 + 255 - k*8 - l] for l in range(8)]), "," if k != 31 else ""), file=f)
  12             print("};", file=f);
  13
  14 write_init_vh("techlibs/ice40/brams_init1.vh", [i//2 + 2048*(i%2) for i in range(4096)])
  15 write_init_vh("techlibs/ice40/brams_init2.vh", [i//4 + 1024*(i%4) for i in range(4096)])
  16 write_init_vh("techlibs/ice40/brams_init3.vh", [i//8 +  512*(i%8) for i in range(4096)])
  17