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https://opencores.org/ocsvn/cpu_lecture/cpu_lecture/trunk
[/] [cpu_lecture/] [trunk/] [src/] [opc_deco.vhd] - Diff between revs 23 and 24
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| Rev 23 |
Rev 24 |
| Line 99... |
Line 99... |
if (I_OPC(5)) = '1' then -- interrupt
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if (I_OPC(5)) = '1' then -- interrupt
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Q_ALU_OP <= ALU_INTR;
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Q_ALU_OP <= ALU_INTR;
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Q_AMOD <= AMOD_SPdd;
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Q_AMOD <= AMOD_SPdd;
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Q_JADR <= "0000000000" & I_OPC(4 downto 0) & "0";
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Q_JADR <= "0000000000" & I_OPC(4 downto 0) & "0";
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Q_PC_OP <= PC_LD_I;
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Q_PC_OP <= PC_LD_I;
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Q_WE_F <= '1';
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Q_WE_F <= '1'; -- clear I-flag
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Q_WE_M <= "11";
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Q_WE_M <= "11"; -- write return address
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Q_WE_XYZS <= '1'; -- write new SP
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end if;
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end if;
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when "01" =>
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when "01" =>
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--
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--
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-- 0000 0001 dddd rrrr - MOVW
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-- 0000 0001 dddd rrrr - MOVW
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