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[/] [cpu_lecture/] [trunk/] [src/] [alu.vhd] - Diff between revs 11 and 17
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| Rev 11 |
Rev 17 |
| Line 299... |
Line 299... |
when ALU_PC_2 => -- CALL
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when ALU_PC_2 => -- CALL
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L_DOUT <= I_PC + X"0002";
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L_DOUT <= I_PC + X"0002";
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when ALU_ROR =>
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when ALU_ROR =>
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L_DOUT <= L_ROR_D & L_ROR_D;
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L_DOUT <= L_ROR_D & L_ROR_D;
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Q_FLAGS(0) <= L_D8(0); -- Carry
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Q_FLAGS(1) <= ze(L_ROR_D); -- Zero
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Q_FLAGS(1) <= ze(L_ROR_D); -- Zero
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Q_FLAGS(2) <= I_FLAGS(0); -- Negative
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Q_FLAGS(2) <= I_FLAGS(0); -- Negative
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Q_FLAGS(3) <= I_FLAGS(0) xor L_D8(0); -- Overflow
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Q_FLAGS(3) <= I_FLAGS(0) xor L_D8(0); -- Overflow
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Q_FLAGS(4) <= I_FLAGS(0); -- Signed
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Q_FLAGS(4) <= I_FLAGS(0); -- Signed
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