static branch 1.0

[calu.git] / cpu / src / decoder_b.vhd

diff --git a/cpu/src/decoder_b.vhd b/cpu/src/decoder_b.vhd
index 87fb473a80d4ce750f7e502957cc0cbed81b416d..55358f8e128f211bb189d1704fbafd5027273db7 100644 (file)
--- a/cpu/src/decoder_b.vhd
+++ b/cpu/src/decoder_b.vhd
@@ -292,6 +292,25 @@ begin
                instr_s.bp := instruction(1);
                instr_s.jmptype := instruction(3 downto 2);
                instr_s.signext := instruction(0);
+               instr_s.op_detail(NO_PSW_OPT) := '1';
+               
+
+               if (instr_s.opcode = "10110") then
+                       instr_s.op_detail(IMM_OPT) := '1';      
+               else
+                       instr_s.immediate(31 downto 0) := (others => '0');
+                       instr_s.op_detail(JMP_REG_OPT) := '1';
+                       instr_s.op_detail(IMM_OPT) := '1';      
+               end if;
+
+               if (instr_s.signext = '1' and instr_s.immediate(15) = '1') then
+                       instr_s.immediate(31 downto 16) := (others => '1');
+               end if;
+
+               if (instr_s.jmptype = "00") then
+--                     instr_s.op_detail(SUB_OPT) := not instr_s.opcode(0);
+                       instr_s.op_group := JMP_OP;
+               end if;
        end if;
 
 --     when "10111" =>         --brreg