From: Cesar Strauss <cestrauss@gmail.com>
Date: Wed, 3 Jun 2020 01:16:07 +0000 (-0300)
Subject: Preliminary check of the alu protocol
X-Git-Tag: div_pipeline~637^2~19
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=960f903d59d6a802fe102a65bab517ce68d14cbf;p=soc.git

Preliminary check of the alu protocol

Still need to check that the operand to the alu is held stable.
For now, it's more like a placeholder of what will become the full check.
---

diff --git a/src/soc/experiment/test/test_compalu_multi.py b/src/soc/experiment/test/test_compalu_multi.py
index c92ceb42..8796a610 100644
--- a/src/soc/experiment/test/test_compalu_multi.py
+++ b/src/soc/experiment/test/test_compalu_multi.py
@@ -270,6 +270,11 @@ class CompUnitParallelTest:
         # assert go for one cycle, passing along the operand value
         yield self.dut.rd.go[rd_idx].eq(1)
         yield self.dut.src_i[rd_idx].eq(self.operands[rd_idx])
+        # check that the operand was sent to the alu
+        # TODO: Properly check the alu protocol
+        yield Settle()
+        alu_input = yield self.dut.get_in(rd_idx)
+        assert alu_input == self.operands[rd_idx]
         yield
 
         # rel must keep high, since go was inactive in the last cycle