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Exit if we try to write more than one GPR or CR in a cycle

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Signed-off-by: Anton Blanchard <anton@linux.ibm.com>
This commit is contained in:
Anton Blanchard
2019-09-15 09:04:47 +10:00
committed by Anton Blanchard
parent ab34c48392
commit 50a361a5dc
1 changed files with 2 additions and 2 deletions
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4
writeback.vhdl
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@@ -52,12 +52,12 @@ begin
x := "" & e_in.valid;
y := "" & l_in.valid;
z := "" & m_in.valid;
assert (to_integer(unsigned(x)) + to_integer(unsigned(y)) + to_integer(unsigned(z))) <= 1;
assert (to_integer(unsigned(x)) + to_integer(unsigned(y)) + to_integer(unsigned(z))) <= 1 severity failure;
x := "" & e_in.write_enable;
y := "" & l_in.write_enable;
z := "" & m_in.write_reg_enable;
assert (to_integer(unsigned(x)) + to_integer(unsigned(y)) + to_integer(unsigned(z))) <= 1;
assert (to_integer(unsigned(x)) + to_integer(unsigned(y)) + to_integer(unsigned(z))) <= 1 severity failure;
assert not(e_in.write_cr_enable = '1' and m_in.write_cr_enable = '1');