src/scoreboard/fu_wr_pending.py

   1 from nmigen import Elaboratable, Module, Signal
   2
   3
   4 class FUReadWritePending(Elaboratable):
   5     def __init__(self, reg_count):
   6         self.reg_count = reg_count
   7         self.dest_fwd_i = Signal(fu_count, reset_less=True)
   8         self.src1_fwd_i = Signal(fu_count, reset_less=True)
   9         self.src2_fwd_i = Signal(fu_count, reset_less=True)
  10
  11         self.wr_pend_o = Signal(reset_less=True)
  12         self.rd_pend_o = Signal(reset_less=True)
  13
  14     def elaboratable(self, platform):
  15         m = Module()
  16         srces = Cat(self.src1_fwd_i, self.src2_fwd_i)
  17         m.d.comb += self.wr_pend_o.eq(self.dest_fwd_i.bool())
  18         m.d.comb += self.rd_pend_o.eq(srces.bool()
  19         return m
  20