From: Luke Kenneth Casson Leighton <lkcl@lkcl.net>
Date: Tue, 23 Jul 2019 14:40:25 +0000 (+0100)
Subject: tidyup
X-Git-Tag: ls180-24jan2020~754
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=0f5a3678b2b5209982c692128bc9cca2df2fd948;p=ieee754fpu.git

tidyup
---

diff --git a/src/ieee754/fpdiv/div0.py b/src/ieee754/fpdiv/div0.py
index 33532732..34d7529f 100644
--- a/src/ieee754/fpdiv/div0.py
+++ b/src/ieee754/fpdiv/div0.py
@@ -74,28 +74,27 @@ class FPDivStage0Mod(Elaboratable):
                     extra = 2
                 else:
                     extra = 3
+
             # the mantissas, having been de-normalised (and containing
             # a "1" in the MSB) represent numbers in the range 0.5 to
             # 0.9999999-recurring.  the min and max range of the
             # result is therefore 0.4999999 (0.5/0.99999) and 1.9999998
             # (0.99999/0.5).
 
-            # zero-extend the mantissas (room for sticky/guard)
-            # plus the extra MSB.  See DivPipeBaseStage.get_core_config
+            # zero-extend the mantissas (room for sticky/round/guard)
+            # plus the extra MSB.
             am0 = Signal(len(self.i.a.m)+3, reset_less=True)
             bm0 = Signal(len(self.i.b.m)+3, reset_less=True)
             m.d.comb += [
                          am0.eq(Cat(0,0,0,self.i.a.m, 0)),
                          bm0.eq(Cat(0,0,0,self.i.b.m, 0)),
-                         #am0.eq(0x392),
-                         #bm0.eq(0x1110),
                         ]
 
             m.d.comb += [self.o.z.e.eq(self.i.a.e - self.i.b.e + 1),
                          self.o.z.s.eq(self.i.a.s ^ self.i.b.s),
-                         self.o.dividend[len(self.i.a.m)+extra:].eq(am0), # TODO: check
-                         self.o.divisor_radicand.eq(bm0), # TODO: check
-                         self.o.operation.eq(Const(0)) # TODO check: DIV
+                         self.o.dividend[len(self.i.a.m)+extra:].eq(am0),
+                         self.o.divisor_radicand.eq(bm0),
+                         self.o.operation.eq(Const(0)) # XXX DIV operation
                 ]
 
         # these are required and must not be touched