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authoroharboe <oharboe>2008-08-15 10:53:01 +0000
committeroharboe <oharboe>2008-08-15 10:53:01 +0000
commiteab67ae1b5d86c9c294ef057631d04a448e1727f (patch)
tree752a2782f9eb0f660ef97f0d912c6c570f6c5f1a
parent7aa2c04c916aae945be76e687c13cb40d4679788 (diff)
downloadzpu-eab67ae1b5d86c9c294ef057631d04a448e1727f.zip
zpu-eab67ae1b5d86c9c294ef057631d04a448e1727f.tar.gz
marked unused instruction opcodes as OpCode_NAx
-rw-r--r--zpu/hdl/zpu4/core/zpupkg.vhd8
1 files changed, 4 insertions, 4 deletions
diff --git a/zpu/hdl/zpu4/core/zpupkg.vhd b/zpu/hdl/zpu4/core/zpupkg.vhd
index f3800b0..e8d54a3 100644
--- a/zpu/hdl/zpu4/core/zpupkg.vhd
+++ b/zpu/hdl/zpu4/core/zpupkg.vhd
@@ -114,9 +114,9 @@ package zpupkg is
constant OpCode_Short : std_logic_vector(7 downto 4) := "0000";
constant OpCode_Break : std_logic_vector(3 downto 0) := "0000";
- constant OpCode_Shiftleft: std_logic_vector(3 downto 0) := "0001";
+ constant OpCode_NA4 : std_logic_vector(3 downto 0) := "0001";
constant OpCode_PushSP : std_logic_vector(3 downto 0) := "0010";
- constant OpCode_PushInt : std_logic_vector(3 downto 0) := "0011";
+ constant OpCode_NA3 : std_logic_vector(3 downto 0) := "0011";
constant OpCode_PopPC : std_logic_vector(3 downto 0) := "0100";
constant OpCode_Add : std_logic_vector(3 downto 0) := "0101";
@@ -130,8 +130,8 @@ package zpupkg is
constant OpCode_Store : std_logic_vector(3 downto 0) := "1100";
constant OpCode_PopSP : std_logic_vector(3 downto 0) := "1101";
- constant OpCode_Compare : std_logic_vector(3 downto 0) := "1110";
- constant OpCode_PopInt : std_logic_vector(3 downto 0) := "1111";
+ constant OpCode_NA2 : std_logic_vector(3 downto 0) := "1110";
+ constant OpCode_NA : std_logic_vector(3 downto 0) := "1111";
constant OpCode_Lessthan : std_logic_vector(5 downto 0) := std_logic_vector(to_unsigned(36, 6));
constant OpCode_Lessthanorequal : std_logic_vector(5 downto 0) := std_logic_vector(to_unsigned(37, 6));
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