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https://opencores.org/ocsvn/nanoblaze/nanoblaze/trunk
[/] [nanoblaze/] [trunk/] [Circuit/] [alu.vhd] - Diff between revs 10 and 11
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| Rev 10 |
Rev 11 |
| Line 70... |
Line 70... |
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------------------------------------------------------------------------------
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------------------------------------------------------------------------------
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-- values for arithmetic operations
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-- values for arithmetic operations
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aArith <= signed(resize(unsigned(opA), aArith'length));
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aArith <= signed(resize(unsigned(opA), aArith'length));
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bArith <= signed(resize(unsigned(opB), bArith'length));
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bArith <= signed(resize(unsigned(opB), bArith'length));
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cInArith(cInArith'high downto 1) <= (others => '0');
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cInArith <= (0 => cIn, others => '0');
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cInArith <= '0' & cIn;
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process(aluCode, cIn, opA)
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process(aluCode, cIn, opA)
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begin
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begin
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case aluCode(2 downto 1) is
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case aluCode(2 downto 1) is
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when "00" => cInShift <= cIn;
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when "00" => cInShift <= cIn;
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| Line 91... |
Line 90... |
aluOperation: process(
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aluOperation: process(
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aluCodeInt,
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aluCodeInt,
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opA, opB,
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opA, opB,
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aArith, bArith, cInArith,
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aArith, bArith, cInArith,
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cInShift,
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cInShift,
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yArith
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yArith, aluOutInt
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)
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)
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variable xorAcc: std_ulogic;
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variable xorAcc: std_ulogic;
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begin
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begin
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yArith <= (others => '-');
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yArith <= (others => '-');
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cOut <= '-';
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cOut <= '-';
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