diff --git a/src/386_ops.h b/src/386_ops.h
index f29d52d..e32584d 100644
--- a/src/386_ops.h
+++ b/src/386_ops.h
@@ -283,7 +283,7 @@ OpFn ops_386_0f[1024] =
 /*80*/  opJO_w,         opJNO_w,        opJB_w,         opJNB_w,        opJE_w,         opJNE_w,        opJBE_w,        opJNBE_w,       opJS_w,         opJNS_w,        opJP_w,         opJNP_w,        opJL_w,         opJNL_w,        opJLE_w,        opJNLE_w,
 /*90*/  opSETO_a16,     opSETNO_a16,    opSETB_a16,     opSETNB_a16,    opSETE_a16,     opSETNE_a16,    opSETBE_a16,    opSETNBE_a16,   opSETS_a16,     opSETNS_a16,    opSETP_a16,     opSETNP_a16,    opSETL_a16,     opSETNL_a16,    opSETLE_a16,    opSETNLE_a16,
 /*a0*/  opPUSH_FS_w,    opPOP_FS_w,     opCPUID,        opBT_w_r_a16,   opSHLD_w_i_a16, opSHLD_w_CL_a16,ILLEGAL,        ILLEGAL,        opPUSH_GS_w,    opPOP_GS_w,     ILLEGAL,        opBTS_w_r_a16,  opSHRD_w_i_a16, opSHRD_w_CL_a16,ILLEGAL,        opIMUL_w_w_a16,
-/*b0*/  opCMPXCHG_b_a16,opCMPXCHG_w_a16,opLSS_w_a16,    opBTR_w_r_a16,  opLFS_w_a16,    opLGS_w_a16,    opMOVZX_w_b_a16,ILLEGAL,        ILLEGAL,        ILLEGAL,        opBA_w_a16,     opBTC_w_r_a16,  opBSF_w_a16,    opBSR_w_a16,    opMOVSX_w_b_a16,ILLEGAL,
+/*b0*/  opCMPXCHG_b_a16,opCMPXCHG_w_a16,opLSS_w_a16,    opBTR_w_r_a16,  opLFS_w_a16,    opLGS_w_a16,    opMOVZX_w_b_a16,opMOVZX_w_w_a16,ILLEGAL,        ILLEGAL,        opBA_w_a16,     opBTC_w_r_a16,  opBSF_w_a16,    opBSR_w_a16,    opMOVSX_w_b_a16,ILLEGAL,
 
 /*c0*/  opXADD_b_a16,   opXADD_w_a16,   ILLEGAL,        ILLEGAL,        ILLEGAL,        ILLEGAL,        ILLEGAL,        ILLEGAL,        opBSWAP_EAX,    opBSWAP_ECX,    opBSWAP_EDX,    opBSWAP_EBX,    opBSWAP_ESP,    opBSWAP_EBP,    opBSWAP_ESI,    opBSWAP_EDI,
 /*d0*/  ILLEGAL,        ILLEGAL,        ILLEGAL,        ILLEGAL,        ILLEGAL,        ILLEGAL,        ILLEGAL,        ILLEGAL,        ILLEGAL,        ILLEGAL,        ILLEGAL,        ILLEGAL,        ILLEGAL,        ILLEGAL,        ILLEGAL,        ILLEGAL,
@@ -327,7 +327,7 @@ OpFn ops_386_0f[1024] =
 /*80*/  opJO_w,         opJNO_w,        opJB_w,         opJNB_w,        opJE_w,         opJNE_w,        opJBE_w,        opJNBE_w,       opJS_w,         opJNS_w,        opJP_w,         opJNP_w,        opJL_w,         opJNL_w,        opJLE_w,        opJNLE_w,
 /*90*/  opSETO_a32,     opSETNO_a32,    opSETB_a32,     opSETNB_a32,    opSETE_a32,     opSETNE_a32,    opSETBE_a32,    opSETNBE_a32,   opSETS_a32,     opSETNS_a32,    opSETP_a32,     opSETNP_a32,    opSETL_a32,     opSETNL_a32,    opSETLE_a32,    opSETNLE_a32,
 /*a0*/  opPUSH_FS_w,    opPOP_FS_w,     opCPUID,        opBT_w_r_a32,   opSHLD_w_i_a32, opSHLD_w_CL_a32,ILLEGAL,        ILLEGAL,        opPUSH_GS_w,    opPOP_GS_w,     ILLEGAL,        opBTS_w_r_a32,  opSHRD_w_i_a32, opSHRD_w_CL_a32,ILLEGAL,        opIMUL_w_w_a32,
-/*b0*/  opCMPXCHG_b_a32,opCMPXCHG_w_a32,opLSS_w_a32,    opBTR_w_r_a32,  opLFS_w_a32,    opLGS_w_a32,    opMOVZX_w_b_a32,ILLEGAL,        ILLEGAL,        ILLEGAL,        opBA_w_a32,     opBTC_w_r_a32,  opBSF_w_a32,    opBSR_w_a32,    opMOVSX_w_b_a32,ILLEGAL,
+/*b0*/  opCMPXCHG_b_a32,opCMPXCHG_w_a32,opLSS_w_a32,    opBTR_w_r_a32,  opLFS_w_a32,    opLGS_w_a32,    opMOVZX_w_b_a32,opMOVZX_w_w_a32,ILLEGAL,        ILLEGAL,        opBA_w_a32,     opBTC_w_r_a32,  opBSF_w_a32,    opBSR_w_a32,    opMOVSX_w_b_a32,ILLEGAL,
 
 /*c0*/  opXADD_b_a32,   opXADD_w_a32,   ILLEGAL,        ILLEGAL,        ILLEGAL,        ILLEGAL,        ILLEGAL,        ILLEGAL,        opBSWAP_EAX,    opBSWAP_ECX,    opBSWAP_EDX,    opBSWAP_EBX,    opBSWAP_ESP,    opBSWAP_EBP,    opBSWAP_ESI,    opBSWAP_EDI,
 /*d0*/  ILLEGAL,        ILLEGAL,        ILLEGAL,        ILLEGAL,        ILLEGAL,        ILLEGAL,        ILLEGAL,        ILLEGAL,        ILLEGAL,        ILLEGAL,        ILLEGAL,        ILLEGAL,        ILLEGAL,        ILLEGAL,        ILLEGAL,        ILLEGAL,
@@ -374,7 +374,7 @@ OpFn ops_winchip_0f[1024] =
 /*80*/  opJO_w,         opJNO_w,        opJB_w,         opJNB_w,        opJE_w,         opJNE_w,        opJBE_w,        opJNBE_w,       opJS_w,         opJNS_w,        opJP_w,         opJNP_w,        opJL_w,         opJNL_w,        opJLE_w,        opJNLE_w,
 /*90*/  opSETO_a16,     opSETNO_a16,    opSETB_a16,     opSETNB_a16,    opSETE_a16,     opSETNE_a16,    opSETBE_a16,    opSETNBE_a16,   opSETS_a16,     opSETNS_a16,    opSETP_a16,     opSETNP_a16,    opSETL_a16,     opSETNL_a16,    opSETLE_a16,    opSETNLE_a16,
 /*a0*/  opPUSH_FS_w,    opPOP_FS_w,     opCPUID,        opBT_w_r_a16,   opSHLD_w_i_a16, opSHLD_w_CL_a16,ILLEGAL,        ILLEGAL,        opPUSH_GS_w,    opPOP_GS_w,     ILLEGAL,        opBTS_w_r_a16,  opSHRD_w_i_a16, opSHRD_w_CL_a16,ILLEGAL,        opIMUL_w_w_a16,
-/*b0*/  opCMPXCHG_b_a16,opCMPXCHG_w_a16,opLSS_w_a16,    opBTR_w_r_a16,  opLFS_w_a16,    opLGS_w_a16,    opMOVZX_w_b_a16,ILLEGAL,        ILLEGAL,        ILLEGAL,        opBA_w_a16,     opBTC_w_r_a16,  opBSF_w_a16,    opBSR_w_a16,    opMOVSX_w_b_a16,ILLEGAL,
+/*b0*/  opCMPXCHG_b_a16,opCMPXCHG_w_a16,opLSS_w_a16,    opBTR_w_r_a16,  opLFS_w_a16,    opLGS_w_a16,    opMOVZX_w_b_a16,opMOVZX_w_w_a16,ILLEGAL,        ILLEGAL,        opBA_w_a16,     opBTC_w_r_a16,  opBSF_w_a16,    opBSR_w_a16,    opMOVSX_w_b_a16,ILLEGAL,
 
 /*c0*/  opXADD_b_a16,   opXADD_w_a16,   ILLEGAL,        ILLEGAL,        ILLEGAL,        ILLEGAL,        ILLEGAL,        ILLEGAL,        opBSWAP_EAX,    opBSWAP_ECX,    opBSWAP_EDX,    opBSWAP_EBX,    opBSWAP_ESP,    opBSWAP_EBP,    opBSWAP_ESI,    opBSWAP_EDI,
 /*d0*/  ILLEGAL,        ILLEGAL,        ILLEGAL,        ILLEGAL,        ILLEGAL,        ILLEGAL,        ILLEGAL,        ILLEGAL,        ILLEGAL,        ILLEGAL,        ILLEGAL,        ILLEGAL,        ILLEGAL,        ILLEGAL,        ILLEGAL,        ILLEGAL,
@@ -418,7 +418,7 @@ OpFn ops_winchip_0f[1024] =
 /*80*/  opJO_w,         opJNO_w,        opJB_w,         opJNB_w,        opJE_w,         opJNE_w,        opJBE_w,        opJNBE_w,       opJS_w,         opJNS_w,        opJP_w,         opJNP_w,        opJL_w,         opJNL_w,        opJLE_w,        opJNLE_w,
 /*90*/  opSETO_a32,     opSETNO_a32,    opSETB_a32,     opSETNB_a32,    opSETE_a32,     opSETNE_a32,    opSETBE_a32,    opSETNBE_a32,   opSETS_a32,     opSETNS_a32,    opSETP_a32,     opSETNP_a32,    opSETL_a32,     opSETNL_a32,    opSETLE_a32,    opSETNLE_a32,
 /*a0*/  opPUSH_FS_w,    opPOP_FS_w,     opCPUID,        opBT_w_r_a32,   opSHLD_w_i_a32, opSHLD_w_CL_a32,ILLEGAL,        ILLEGAL,        opPUSH_GS_w,    opPOP_GS_w,     ILLEGAL,        opBTS_w_r_a32,  opSHRD_w_i_a32, opSHRD_w_CL_a32,ILLEGAL,        opIMUL_w_w_a32,
-/*b0*/  opCMPXCHG_b_a32,opCMPXCHG_w_a32,opLSS_w_a32,    opBTR_w_r_a32,  opLFS_w_a32,    opLGS_w_a32,    opMOVZX_w_b_a32,ILLEGAL,        ILLEGAL,        ILLEGAL,        opBA_w_a32,     opBTC_w_r_a32,  opBSF_w_a32,    opBSR_w_a32,    opMOVSX_w_b_a32,ILLEGAL,
+/*b0*/  opCMPXCHG_b_a32,opCMPXCHG_w_a32,opLSS_w_a32,    opBTR_w_r_a32,  opLFS_w_a32,    opLGS_w_a32,    opMOVZX_w_b_a32,opMOVZX_w_w_a32,ILLEGAL,        ILLEGAL,        opBA_w_a32,     opBTC_w_r_a32,  opBSF_w_a32,    opBSR_w_a32,    opMOVSX_w_b_a32,ILLEGAL,
 
 /*c0*/  opXADD_b_a32,   opXADD_w_a32,   ILLEGAL,        ILLEGAL,        ILLEGAL,        ILLEGAL,        ILLEGAL,        ILLEGAL,        opBSWAP_EAX,    opBSWAP_ECX,    opBSWAP_EDX,    opBSWAP_EBX,    opBSWAP_ESP,    opBSWAP_EBP,    opBSWAP_ESI,    opBSWAP_EDI,
 /*d0*/  ILLEGAL,        ILLEGAL,        ILLEGAL,        ILLEGAL,        ILLEGAL,        ILLEGAL,        ILLEGAL,        ILLEGAL,        ILLEGAL,        ILLEGAL,        ILLEGAL,        ILLEGAL,        ILLEGAL,        ILLEGAL,        ILLEGAL,        ILLEGAL,
@@ -467,7 +467,7 @@ OpFn ops_286[1024] =
 /*a0*/  opMOV_AL_a16,   opMOV_AX_a16,   opMOV_a16_AL,   opMOV_a16_AX,   opMOVSB_a16,    opMOVSW_a16,    opCMPSB_a16,    opCMPSW_a16,    opTEST_AL,      opTEST_AX,      opSTOSB_a16,    opSTOSW_a16,    opLODSB_a16,    opLODSW_a16,    opSCASB_a16,    opSCASW_a16,
 /*b0*/  opMOV_AL_imm,   opMOV_CL_imm,   opMOV_DL_imm,   opMOV_BL_imm,   opMOV_AH_imm,   opMOV_CH_imm,   opMOV_DH_imm,   opMOV_BH_imm,   opMOV_AX_imm,   opMOV_CX_imm,   opMOV_DX_imm,   opMOV_BX_imm,   opMOV_SP_imm,   opMOV_BP_imm,   opMOV_SI_imm,   opMOV_DI_imm,
 
-/*c0*/  opC0_a16,       opC1_w_a16,     opRET_w_imm,    opRET_w,        opLES_w_a16,    opLDS_w_a16,    opMOV_b_imm_a16,opMOV_w_imm_a16,opENTER_w,      opLEAVE_w,      opRETF_a16_imm, opRETF_a16,     opINT3,         opINT,          opINTO,         opIRET,
+/*c0*/  opC0_a16,       opC1_w_a16,     opRET_w_imm,    opRET_w,        opLES_w_a16,    opLDS_w_a16,    opMOV_b_imm_a16,opMOV_w_imm_a16,opENTER_w,      opLEAVE_w,      opRETF_a16_imm, opRETF_a16,     opINT3,         opINT,          opINTO,         opIRET_286,
 /*d0*/  opD0_a16,       opD1_w_a16,     opD2_a16,       opD3_w_a16,     opAAM,          opAAD,          opSETALC,       opXLAT_a16,     opESCAPE_d8_a16,opESCAPE_d9_a16,opESCAPE_da_a16,opESCAPE_db_a16,opESCAPE_dc_a16,opESCAPE_dd_a16,opESCAPE_de_a16,opESCAPE_df_a16,
 /*e0*/  opLOOPNE_w,     opLOOPE_w,      opLOOP_w,       opJCXZ,         opIN_AL_imm,    opIN_AX_imm,    opOUT_AL_imm,   opOUT_AX_imm,   opCALL_r16,     opJMP_r16,      opJMP_far_a16,  opJMP_r8,       opIN_AL_DX,     opIN_AX_DX,     opOUT_AL_DX,    opOUT_AX_DX,
 /*f0*/  opLOCK,         ILLEGAL,        opREPNE,        opREPE,         opHLT,          opCMC,          opF6_a16,       opF7_w_a16,     opCLC,          opSTC,          opCLI,          opSTI,          opCLD,          opSTD,          opINCDEC_b_a16, opFF_w_a16,
@@ -489,7 +489,7 @@ OpFn ops_286[1024] =
 /*a0*/  opMOV_AL_a16,   opMOV_AX_a16,   opMOV_a16_AL,   opMOV_a16_AX,   opMOVSB_a16,    opMOVSW_a16,    opCMPSB_a16,    opCMPSW_a16,    opTEST_AL,      opTEST_AX,      opSTOSB_a16,    opSTOSW_a16,    opLODSB_a16,    opLODSW_a16,    opSCASB_a16,    opSCASW_a16,
 /*b0*/  opMOV_AL_imm,   opMOV_CL_imm,   opMOV_DL_imm,   opMOV_BL_imm,   opMOV_AH_imm,   opMOV_CH_imm,   opMOV_DH_imm,   opMOV_BH_imm,   opMOV_AX_imm,   opMOV_CX_imm,   opMOV_DX_imm,   opMOV_BX_imm,   opMOV_SP_imm,   opMOV_BP_imm,   opMOV_SI_imm,   opMOV_DI_imm,
 
-/*c0*/  opC0_a16,       opC1_w_a16,     opRET_w_imm,    opRET_w,        opLES_w_a16,    opLDS_w_a16,    opMOV_b_imm_a16,opMOV_w_imm_a16,opENTER_w,      opLEAVE_w,      opRETF_a16_imm, opRETF_a16,     opINT3,         opINT,          opINTO,         opIRET,
+/*c0*/  opC0_a16,       opC1_w_a16,     opRET_w_imm,    opRET_w,        opLES_w_a16,    opLDS_w_a16,    opMOV_b_imm_a16,opMOV_w_imm_a16,opENTER_w,      opLEAVE_w,      opRETF_a16_imm, opRETF_a16,     opINT3,         opINT,          opINTO,         opIRET_286,
 /*d0*/  opD0_a16,       opD1_w_a16,     opD2_a16,       opD3_w_a16,     opAAM,          opAAD,          opSETALC,       opXLAT_a16,     opESCAPE_d8_a16,opESCAPE_d9_a16,opESCAPE_da_a16,opESCAPE_db_a16,opESCAPE_dc_a16,opESCAPE_dd_a16,opESCAPE_de_a16,opESCAPE_df_a16,
 /*e0*/  opLOOPNE_w,     opLOOPE_w,      opLOOP_w,       opJCXZ,         opIN_AL_imm,    opIN_AX_imm,    opOUT_AL_imm,   opOUT_AX_imm,   opCALL_r16,     opJMP_r16,      opJMP_far_a16,  opJMP_r8,       opIN_AL_DX,     opIN_AX_DX,     opOUT_AL_DX,    opOUT_AX_DX,
 /*f0*/  opLOCK,         ILLEGAL,        opREPNE,        opREPE,         opHLT,          opCMC,          opF6_a16,       opF7_w_a16,     opCLC,          opSTC,          opCLI,          opSTI,          opCLD,          opSTD,          opINCDEC_b_a16, opFF_w_a16,
@@ -511,7 +511,7 @@ OpFn ops_286[1024] =
 /*a0*/  opMOV_AL_a16,   opMOV_AX_a16,   opMOV_a16_AL,   opMOV_a16_AX,   opMOVSB_a16,    opMOVSW_a16,    opCMPSB_a16,    opCMPSW_a16,    opTEST_AL,      opTEST_AX,      opSTOSB_a16,    opSTOSW_a16,    opLODSB_a16,    opLODSW_a16,    opSCASB_a16,    opSCASW_a16,
 /*b0*/  opMOV_AL_imm,   opMOV_CL_imm,   opMOV_DL_imm,   opMOV_BL_imm,   opMOV_AH_imm,   opMOV_CH_imm,   opMOV_DH_imm,   opMOV_BH_imm,   opMOV_AX_imm,   opMOV_CX_imm,   opMOV_DX_imm,   opMOV_BX_imm,   opMOV_SP_imm,   opMOV_BP_imm,   opMOV_SI_imm,   opMOV_DI_imm,
 
-/*c0*/  opC0_a16,       opC1_w_a16,     opRET_w_imm,    opRET_w,        opLES_w_a16,    opLDS_w_a16,    opMOV_b_imm_a16,opMOV_w_imm_a16,opENTER_w,      opLEAVE_w,      opRETF_a16_imm, opRETF_a16,     opINT3,         opINT,          opINTO,         opIRET,
+/*c0*/  opC0_a16,       opC1_w_a16,     opRET_w_imm,    opRET_w,        opLES_w_a16,    opLDS_w_a16,    opMOV_b_imm_a16,opMOV_w_imm_a16,opENTER_w,      opLEAVE_w,      opRETF_a16_imm, opRETF_a16,     opINT3,         opINT,          opINTO,         opIRET_286,
 /*d0*/  opD0_a16,       opD1_w_a16,     opD2_a16,       opD3_w_a16,     opAAM,          opAAD,          opSETALC,       opXLAT_a16,     opESCAPE_d8_a16,opESCAPE_d9_a16,opESCAPE_da_a16,opESCAPE_db_a16,opESCAPE_dc_a16,opESCAPE_dd_a16,opESCAPE_de_a16,opESCAPE_df_a16,
 /*e0*/  opLOOPNE_w,     opLOOPE_w,      opLOOP_w,       opJCXZ,         opIN_AL_imm,    opIN_AX_imm,    opOUT_AL_imm,   opOUT_AX_imm,   opCALL_r16,     opJMP_r16,      opJMP_far_a16,  opJMP_r8,       opIN_AL_DX,     opIN_AX_DX,     opOUT_AL_DX,    opOUT_AX_DX,
 /*f0*/  opLOCK,         ILLEGAL,        opREPNE,        opREPE,         opHLT,          opCMC,          opF6_a16,       opF7_w_a16,     opCLC,          opSTC,          opCLI,          opSTI,          opCLD,          opSTD,          opINCDEC_b_a16, opFF_w_a16,
@@ -533,7 +533,7 @@ OpFn ops_286[1024] =
 /*a0*/  opMOV_AL_a16,   opMOV_AX_a16,   opMOV_a16_AL,   opMOV_a16_AX,   opMOVSB_a16,    opMOVSW_a16,    opCMPSB_a16,    opCMPSW_a16,    opTEST_AL,      opTEST_AX,      opSTOSB_a16,    opSTOSW_a16,    opLODSB_a16,    opLODSW_a16,    opSCASB_a16,    opSCASW_a16,
 /*b0*/  opMOV_AL_imm,   opMOV_CL_imm,   opMOV_DL_imm,   opMOV_BL_imm,   opMOV_AH_imm,   opMOV_CH_imm,   opMOV_DH_imm,   opMOV_BH_imm,   opMOV_AX_imm,   opMOV_CX_imm,   opMOV_DX_imm,   opMOV_BX_imm,   opMOV_SP_imm,   opMOV_BP_imm,   opMOV_SI_imm,   opMOV_DI_imm,
 
-/*c0*/  opC0_a16,       opC1_w_a16,     opRET_w_imm,    opRET_w,        opLES_w_a16,    opLDS_w_a16,    opMOV_b_imm_a16,opMOV_w_imm_a16,opENTER_w,      opLEAVE_w,      opRETF_a16_imm, opRETF_a16,     opINT3,         opINT,          opINTO,         opIRET,
+/*c0*/  opC0_a16,       opC1_w_a16,     opRET_w_imm,    opRET_w,        opLES_w_a16,    opLDS_w_a16,    opMOV_b_imm_a16,opMOV_w_imm_a16,opENTER_w,      opLEAVE_w,      opRETF_a16_imm, opRETF_a16,     opINT3,         opINT,          opINTO,         opIRET_286,
 /*d0*/  opD0_a16,       opD1_w_a16,     opD2_a16,       opD3_w_a16,     opAAM,          opAAD,          opSETALC,       opXLAT_a16,     opESCAPE_d8_a16,opESCAPE_d9_a16,opESCAPE_da_a16,opESCAPE_db_a16,opESCAPE_dc_a16,opESCAPE_dd_a16,opESCAPE_de_a16,opESCAPE_df_a16,
 /*e0*/  opLOOPNE_w,     opLOOPE_w,      opLOOP_w,       opJCXZ,         opIN_AL_imm,    opIN_AX_imm,    opOUT_AL_imm,   opOUT_AX_imm,   opCALL_r16,     opJMP_r16,      opJMP_far_a16,  opJMP_r8,       opIN_AL_DX,     opIN_AX_DX,     opOUT_AL_DX,    opOUT_AX_DX,
 /*f0*/  opLOCK,         ILLEGAL,        opREPNE,        opREPE,         opHLT,          opCMC,          opF6_a16,       opF7_w_a16,     opCLC,          opSTC,          opCLI,          opSTI,          opCLD,          opSTD,          opINCDEC_b_a16, opFF_w_a16,
diff --git a/src/x86_ops_flag.h b/src/x86_ops_flag.h
index b0a44d9..4c64dd8 100644
--- a/src/x86_ops_flag.h
+++ b/src/x86_ops_flag.h
@@ -117,7 +117,6 @@ static int opPOPF_286(uint32_t fetchdat)
         
         tempw = POP_W();                if (abrt) return 0;
 
-        pclog("POPF_286 %04X:%04X %04X\n", CS, pc, tempw);
         if (!(msw & 1))           flags = (flags & 0x7000) | (tempw & 0x0fd5) | 2;
         else if (!(CPL))          flags = (tempw & 0x7fd5) | 2;
         else if (IOPLp)           flags = (flags & 0x3000) | (tempw & 0x4fd5) | 2;
diff --git a/src/x86_ops_movx.h b/src/x86_ops_movx.h
index e41f22e..77226c2 100644
--- a/src/x86_ops_movx.h
+++ b/src/x86_ops_movx.h
@@ -42,6 +42,28 @@ static int opMOVZX_l_b_a32(uint32_t fetchdat)
         cycles -= 3;
         return 0;
 }
+static int opMOVZX_w_w_a16(uint32_t fetchdat)
+{
+        uint16_t temp;
+        
+        fetch_ea_16(fetchdat);
+        temp = geteaw();                        if (abrt) return 0;
+        regs[reg].w = temp;
+        
+        cycles -= 3;
+        return 0;
+}
+static int opMOVZX_w_w_a32(uint32_t fetchdat)
+{
+        uint16_t temp;
+        
+        fetch_ea_32(fetchdat);
+        temp = geteaw();                        if (abrt) return 0;
+        regs[reg].w = temp;
+        
+        cycles -= 3;
+        return 0;
+}
 static int opMOVZX_l_w_a16(uint32_t fetchdat)
 {
         uint16_t temp;
diff --git a/src/x86_ops_ret.h b/src/x86_ops_ret.h
index 21eb3a8..507ea9a 100644
--- a/src/x86_ops_ret.h
+++ b/src/x86_ops_ret.h
@@ -68,6 +68,46 @@ static int opRETF_a32_imm(uint32_t fetchdat)
         return 0;
 }
 
+static int opIRET_286(uint32_t fetchdat)
+{
+        if ((cr0 & 1) && (eflags & VM_FLAG) && (IOPL != 3))
+        {
+                x86gpf(NULL,0);
+                return 0;
+        }
+        if (ssegs) ss = oldss;
+        if (msw&1)
+        {
+                optype = IRET;
+                pmodeiret(0);
+                optype = 0;
+        }
+        else
+        {
+                uint16_t new_cs;
+                oxpc = pc;
+                if (stack32)
+                {
+                        pc = readmemw(ss, ESP);
+                        new_cs = readmemw(ss, ESP + 2);
+                        flags = (flags & 0x7000) | (readmemw(ss, ESP + 4) & 0xffd5) | 2;
+                        ESP += 6;
+                }
+                else
+                {
+                        pc = readmemw(ss, SP);
+                        new_cs = readmemw(ss, ((SP + 2) & 0xffff));
+                        flags = (flags & 0x7000) | (readmemw(ss, ((SP + 4) & 0xffff)) & 0x0fd5) | 2;
+                        SP += 6;
+                }
+                loadcs(new_cs);
+        }
+        flags_extract();
+        cycles -= is486 ? 15 : 22;
+        nmi_enable = 1;
+        return 0;
+}
+
 static int opIRET(uint32_t fetchdat)
 {
         if ((cr0 & 1) && (eflags & VM_FLAG) && (IOPL != 3))