techlibs/ecp5/brams_init.py

   1 #!/usr/bin/env python3
   2 with open("techlibs/ecp5/bram_init_1_2_4.vh", "w") as f:
   3     for i in range(0, 0x40):
   4         init_snippets = []
   5         for j in range(32):
   6             init_snippets.append("INIT[%4d*8 +: 8]" % (32 * i + j))
   7             init_snippets.append("3'b000" if (j % 2 == 1) else "1'b0")
   8         init_snippets = list(reversed(init_snippets))
   9         for k in range(8, 64, 8):
  10             init_snippets[k] = "\n          " + init_snippets[k]
  11         print(".INITVAL_%02X({%s})," % (i, ", ".join(init_snippets)), file=f)
  12
  13 with open("techlibs/ecp5/bram_init_9_18_36.vh", "w") as f:
  14     for i in range(0, 0x40):
  15         init_snippets = []
  16         for j in range(16):
  17             init_snippets.append("INIT[%3d*18 +: 18]" % (16 * i + j))
  18             init_snippets.append("2'b00")
  19         init_snippets = list(reversed(init_snippets))
  20         for k in range(8, 32, 8):
  21             init_snippets[k] = "\n          " + init_snippets[k]
  22         print(".INITVAL_%02X({%s})," % (i, ", ".join(init_snippets)), file=f)