src/scoreboard/reg_select.py

   1 from nmigen import Elaboratable, Module, Signal
   2
   3
   4 class Reg_Rsv(Elaboratable):
   5     """ these are allocated per-Register (vertically),
   6         and are each of length fu_count
   7     """
   8     def __init__(self, fu_count):
   9         self.fu_count = fu_count
  10         self.dest_rsel_i = Signal(fu_count, reset_less=True)
  11         self.src1_rsel_i = Signal(fu_count, reset_less=True)
  12         self.src2_rsel_i = Signal(fu_count, reset_less=True)
  13         self.dest_rsel_o = Signal(reset_less=True)
  14         self.src1_rsel_o = Signal(reset_less=True)
  15         self.src2_rsel_o = Signal(reset_less=True)
  16
  17     def elaborate(self, platform):
  18         m = Module()
  19         m.d.comb += self.dest_rsel_o.eq(self.dest_rsel_i.bool())
  20         m.d.comb += self.src1_rsel_o.eq(self.src1_rsel_i.bool())
  21         m.d.comb += self.src2_rsel_o.eq(self.src2_rsel_i.bool())
  22         return m
  23