diff --git a/lib/CPUs/MIPS/src/core/mips_instr.vhd b/lib/CPUs/MIPS/src/core/mips_instr.vhd
index 3db27b9..b187444 100644
--- a/lib/CPUs/MIPS/src/core/mips_instr.vhd
+++ b/lib/CPUs/MIPS/src/core/mips_instr.vhd
@@ -932,6 +932,13 @@ package body mips_instr is
 			result.reg_write		:= '1';
 			result.except_en		:= '1';
 			
+--		when op_lwcz =>
+		when 48 | 49 | 50 | 51 =>
+--			result.imm_src			:= src_imm32;
+			result.dmem_en			:= '1';
+			result.except_en		:= '1';
+			result.cop_instr_en		:= '1';
+			
 --		when op_lwl =>
 		when 34 =>
 --			result.imm_src			:= src_imm32;
@@ -1004,6 +1011,15 @@ package body mips_instr is
 --			result.imm_src			:= src_imm32;
 			result.except_en		:= '1';
 			
+--		when op_swcz =>
+		when 56 | 57 | 58 | 59 =>
+			result.dmem_en			:= '1';
+			result.dmem_we			:= '1';
+--			result.imm_src			:= src_imm32;
+			result.except_en		:= '1';
+			result.cop_instr_en		:= '1';
+			result.cop_read			:= '1';
+
 --		when op_swl =>
 		when 42 =>
 			result.dmem_en			:= '1';