/**
 * @fileoverview Implements PDP11 opcode handlers.
 * @author <a href="mailto:Jeff@pcjs.org">Jeff Parsons</a>
 * @version 1.0
 * Created 2016-Sep-03
 *
 * This file is part of PCjs, a computer emulation software project at <http://pcjs.org/>.
 *
 * It has been adapted from the JavaScript PDP 11/70 Emulator v1.3 written by Paul Nankervis
 * (paulnank@hotmail.com) as of August 2016 from http://skn.noip.me/pdp11/pdp11.html.  This code
 * may be used freely provided the original author name is acknowledged in any modified source code.
 *
 * PCjs is free software: you can redistribute it and/or modify it under the terms of the
 * GNU General Public License as published by the Free Software Foundation, either version 3
 * of the License, or (at your option) any later version.
 *
 * PCjs is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without
 * even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along with PCjs.  If not,
 * see <http://www.gnu.org/licenses/gpl.html>.
 *
 * You are required to include the above copyright notice in every source code file of every
 * copy or modified version of this work, and to display that copyright notice on every screen
 * that loads or runs any version of this software (see COPYRIGHT in /modules/shared/lib/defines.js).
 *
 * Some PCjs files also attempt to load external resource files, such as character-image files,
 * ROM files, and disk image files. Those external resource files are not considered part of PCjs
 * for purposes of the GNU General Public License, and the author does not claim any copyright
 * as to their contents.
 */

"use strict";

if (NODE) {
    var PDP11         = require("./defines");
}

/**
 * fnADD(dst, src)
 *
 * @this {CPUStatePDP11}
 * @param {number} src
 * @param {number} dst
 * @return {number} (src + dst)
 */
PDP11.fnADD = function(src, dst)
{
    var result = src + dst;
    this.updateAddFlags(result, src, dst);
    return result & 0xffff;
};

/**
 * fnBIC(dst, src)
 *
 * @this {CPUStatePDP11}
 * @param {number} src
 * @param {number} dst
 * @return {number} (~src & dst)
 */
PDP11.fnBIC = function(src, dst)
{
    var result = ~src & dst;
    this.updateNZFlags(result);
    return result;
};

/**
 * fnBICB(dst, src)
 *
 * @this {CPUStatePDP11}
 * @param {number} src
 * @param {number} dst
 * @return {number} (~src & dst)
 */
PDP11.fnBICB = function(src, dst)
{
    var result = ~src & dst;
    this.updateNZFlags(result << 8);
    return result;
};

/**
 * fnBIS(dst, src)
 *
 * @this {CPUStatePDP11}
 * @param {number} src
 * @param {number} dst
 * @return {number} (src | dst)
 */
PDP11.fnBIS = function(src, dst)
{
    var result = src | dst;
    this.updateNZFlags(result);
    return result;
};

/**
 * fnBISB(dst, src)
 *
 * @this {CPUStatePDP11}
 * @param {number} src
 * @param {number} dst
 * @return {number} (src | dst)
 */
PDP11.fnBISB = function(src, dst)
{
    var result = src | dst;
    this.updateNZFlags(result << 8);
    return result;
};

/**
 * fnSUB(dst, src)
 *
 * @this {CPUStatePDP11}
 * @param {number} src
 * @param {number} dst
 * @return {number} (dst - src)
 */
PDP11.fnSUB = function(src, dst)
{
    var result = dst - src;
    this.updateSubFlags(result, src, dst);
    return result & 0xffff;
};

/**
 * opADC(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opADC = function(opCode)
{
    /*
     * TODO: Implement
     */
    this.regOp = -1;
    this.nStepCycles -= 1;
};

/**
 * opADCB(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opADCB = function(opCode)
{
    /*
     * TODO: Implement
     */
    this.regOp = -1;
    this.nStepCycles -= 1;
};

/**
 * opADD(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opADD = function(opCode)
{
    this.updateWordByMode(opCode, this.readWordByMode(opCode >> PDP11.SRCMODE.SHIFT), PDP11.fnADD);
    this.nStepCycles -= 1;
};

/**
 * opASH(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opASH = function(opCode)
{
    /*
     * TODO: Implement
     */
    this.regOp = -1;
    this.nStepCycles -= 1;
};

/**
 * opASHC(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opASHC = function(opCode)
{
    /*
     * TODO: Implement
     */
    this.regOp = -1;
    this.nStepCycles -= 1;
};

/**
 * opASL(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opASL = function(opCode)
{
    /*
     * TODO: Implement
     */
    this.regOp = -1;
    this.nStepCycles -= 1;
};

/**
 * opASLB(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opASLB = function(opCode)
{
    /*
     * TODO: Implement
     */
    this.regOp = -1;
    this.nStepCycles -= 1;
};

/**
 * opASR(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opASR = function(opCode)
{
    /*
     * TODO: Implement
     */
    this.regOp = -1;
    this.nStepCycles -= 1;
};

/**
 * opASRB(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opASRB = function(opCode)
{
    /*
     * TODO: Implement
     */
    this.regOp = -1;
    this.nStepCycles -= 1;
};

/**
 * opBCC(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opBCC = function(opCode)
{
    /*
     * TODO: Implement
     */
    this.regOp = -1;
    this.nStepCycles -= 1;
};

/**
 * opBCS(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opBCS = function(opCode)
{
    /*
     * TODO: Implement
     */
    this.regOp = -1;
    this.nStepCycles -= 1;
};

/**
 * opBIC(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opBIC = function(opCode)
{
    this.updateWordByMode(opCode, this.readWordByMode(opCode >> PDP11.SRCMODE.SHIFT), PDP11.fnBIC);
    this.nStepCycles -= 1;
};

/**
 * opBICB(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opBICB = function(opCode)
{
    this.updateByteByMode(opCode, this.readByteByMode(opCode >> PDP11.SRCMODE.SHIFT), PDP11.fnBICB);
    this.nStepCycles -= 1;
};

/**
 * opBIS(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opBIS = function(opCode)
{
    this.updateWordByMode(opCode, this.readWordByMode(opCode >> PDP11.SRCMODE.SHIFT), PDP11.fnBIS);
    this.nStepCycles -= 1;
};

/**
 * opBISB(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opBISB = function(opCode)
{
    this.updateByteByMode(opCode, this.readByteByMode(opCode >> PDP11.SRCMODE.SHIFT), PDP11.fnBISB);
    this.nStepCycles -= 1;
};

/**
 * opBIT(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opBIT = function(opCode)
{
    this.updateNZFlags(this.readWordByMode(opCode >> PDP11.SRCMODE.SHIFT) & this.readWordByMode(opCode));
    this.nStepCycles -= 1;
};

/**
 * opBITB(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opBITB = function(opCode)
{
    this.updateNZFlags((this.readByteByMode(opCode >> PDP11.SRCMODE.SHIFT) & this.readByteByMode(opCode)) << 8);
    this.nStepCycles -= 1;
};

/**
 * opBEQ(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opBEQ = function(opCode)
{
    /*
     * TODO: Implement
     */
    this.regOp = -1;
    this.nStepCycles -= 1;
};

/**
 * opBGE(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opBGE = function(opCode)
{
    /*
     * TODO: Implement
     */
    this.regOp = -1;
    this.nStepCycles -= 1;
};

/**
 * opBGT(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opBGT = function(opCode)
{
    /*
     * TODO: Implement
     */
    this.regOp = -1;
    this.nStepCycles -= 1;
};

/**
 * opBHI(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opBHI = function(opCode)
{
    /*
     * TODO: Implement
     */
    this.regOp = -1;
    this.nStepCycles -= 1;
};

/**
 * opBLE(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opBLE = function(opCode)
{
    /*
     * TODO: Implement
     */
    this.regOp = -1;
    this.nStepCycles -= 1;
};

/**
 * opBLOS(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opBLOS = function(opCode)
{
    /*
     * TODO: Implement
     */
    this.regOp = -1;
    this.nStepCycles -= 1;
};

/**
 * opBLT(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opBLT = function(opCode)
{
    /*
     * TODO: Implement
     */
    this.regOp = -1;
    this.nStepCycles -= 1;
};

/**
 * opBMI(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opBMI = function(opCode)
{
    /*
     * TODO: Implement
     */
    this.regOp = -1;
    this.nStepCycles -= 1;
};

/**
 * opBNE(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opBNE = function(opCode)
{
    /*
     * TODO: Implement
     */
    this.regOp = -1;
    this.nStepCycles -= 1;
};

/**
 * opBPL(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opBPL = function(opCode)
{
    /*
     * TODO: Implement
     */
    this.regOp = -1;
    this.nStepCycles -= 1;
};

/**
 * opBPT(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opBPT = function(opCode)
{
    /*
     * TODO: Implement
     */
    this.regOp = -1;
    this.nStepCycles -= 1;
};

/**
 * opBR(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opBR = function(opCode)
{
    /*
     * TODO: Implement
     */
    this.regOp = -1;
    this.nStepCycles -= 1;
};

/**
 * opBVC(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opBVC = function(opCode)
{
    /*
     * TODO: Implement
     */
    this.regOp = -1;
    this.nStepCycles -= 1;
};

/**
 * opBVS(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opBVS = function(opCode)
{
    /*
     * TODO: Implement
     */
    this.regOp = -1;
    this.nStepCycles -= 1;
};

/**
 * opCLR(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opCLR = function(opCode)
{
    this.updateNZCFlags(this.writeWordByMode(opCode, 0));
    this.nStepCycles -= 1;
};

/**
 * opCLRB(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opCLRB = function(opCode)
{
    this.updateNZCFlags(this.writeByteByMode(opCode, 0, PDP11.WRITE.ZERO));
    this.nStepCycles -= 1;
};

/**
 * opCLC(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opCLC = function(opCode)
{
    this.clearCF();
    this.nStepCycles -= 1;
};

/**
 * opCLN(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opCLN = function(opCode)
{
    this.clearNF();
    this.nStepCycles -= 1;
};

/**
 * opCLV(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opCLV = function(opCode)
{
    this.clearVF();
    this.nStepCycles -= 1;
};

/**
 * opCLZ(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opCLZ = function(opCode)
{
    this.clearZF();
    this.nStepCycles -= 1;
};

/**
 * opCLx(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opCLx = function(opCode)
{
    if (opCode & 0x1) this.clearCF();
    if (opCode & 0x2) this.clearVF();
    if (opCode & 0x4) this.clearZF();
    if (opCode & 0x8) this.clearNF();
    this.nStepCycles -= 1;
};

/**
 * opCMP(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opCMP = function(opCode)
{
    var src = this.readWordByMode(opCode >> PDP11.SRCMODE.SHIFT);
    var dst = this.readWordByMode(opCode);
    var result = src - dst;
    /*
     * NOTE: CMP calculates (src - dst) rather than (dst - src), so when we call updateSubFlags(),
     * we must reverse the order of the src and dst parameters.
     */
    this.updateSubFlags(result, dst, src);
    this.nStepCycles -= 1;
};

/**
 * opCMPB(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opCMPB = function(opCode)
{
    var src = this.readByteByMode(opCode >> PDP11.SRCMODE.SHIFT) << 8;
    var dst = this.readByteByMode(opCode) << 8;
    var result = src - dst;
    /*
     * NOTE: CMP calculates (src - dst) rather than (dst - src), so when we call updateSubFlags(),
     * we must reverse the order of the src and dst parameters.
     */
    this.updateSubFlags(result, dst, src);
    this.nStepCycles -= 1;
};

/**
 * opCOM(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opCOM = function(opCode)
{
    /*
     * TODO: Implement
     */
    this.regOp = -1;
    this.nStepCycles -= 1;
};

/**
 * opCOMB(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opCOMB = function(opCode)
{
    /*
     * TODO: Implement
     */
    this.regOp = -1;
    this.nStepCycles -= 1;
};

/**
 * opDEC(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opDEC = function(opCode)
{
    /*
     * TODO: Implement
     */
    this.regOp = -1;
    this.nStepCycles -= 1;
};

/**
 * opDECB(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opDECB = function(opCode)
{
    /*
     * TODO: Implement
     */
    this.regOp = -1;
    this.nStepCycles -= 1;
};

/**
 * opDIV(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opDIV = function(opCode)
{
    /*
     * TODO: Implement
     */
    this.regOp = -1;
    this.nStepCycles -= 1;
};

/**
 * opEMT(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opEMT = function(opCode)
{
    /*
     * TODO: Implement
     */
    this.regOp = -1;
    this.nStepCycles -= 1;
};

/**
 * opHALT(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opHALT = function(opCode)
{
    /*
     * TODO: Implement
     */
    this.regOp = -1;
    this.nStepCycles -= 1;
};

/**
 * opINC(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opINC = function(opCode)
{
    /*
     * TODO: Implement
     */
    this.regOp = -1;
    this.nStepCycles -= 1;
};

/**
 * opINCB(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opINCB = function(opCode)
{
    /*
     * TODO: Implement
     */
    this.regOp = -1;
    this.nStepCycles -= 1;
};

/**
 * opIOT(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opIOT = function(opCode)
{
    /*
     * TODO: Implement
     */
    this.regOp = -1;
    this.nStepCycles -= 1;
};

/**
 * opJSR(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opJSR = function(opCode)
{
    /*
     * TODO: Implement
     */
    this.regOp = -1;
    this.nStepCycles -= 1;
};

/**
 * opMARK(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opMARK = function(opCode)
{
    /*
     * TODO: Implement
     */
    this.regOp = -1;
    this.nStepCycles -= 1;
};

/**
 * opMFPD(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opMFPD = function(opCode)
{
    /*
     * TODO: Implement
     */
    this.regOp = -1;
    this.nStepCycles -= 1;
};

/**
 * opMFPI(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opMFPI = function(opCode)
{
    /*
     * TODO: Implement
     */
    this.regOp = -1;
    this.nStepCycles -= 1;
};

/**
 * opMFPS(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opMFPS = function(opCode)
{
    /*
     * TODO: Implement
     */
    this.regOp = -1;
    this.nStepCycles -= 1;
};

/**
 * opMFPT(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opMFPT = function(opCode)
{
    /*
     * TODO: Implement
     */
    this.regOp = -1;
    this.nStepCycles -= 1;
};

/**
 * opMOV(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opMOV = function(opCode)
{
    this.updateNZFlags(this.writeWordByMode(opCode, this.readWordByMode(opCode >> PDP11.SRCMODE.SHIFT)));
    this.nStepCycles -= 1;
};

/**
 * opMOVB(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opMOVB = function(opCode)
{
    var data = this.readByteByMode(opCode >> PDP11.SRCMODE.SHIFT);
    this.updateNZFlags(this.writeByteByMode(opCode, data, PDP11.WRITE.SIGNEXT) << 8);
    this.nStepCycles -= 1;
};

/**
 * opMTPD(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opMTPD = function(opCode)
{
    /*
     * TODO: Implement
     */
    this.regOp = -1;
    this.nStepCycles -= 1;
};

/**
 * opMTPI(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opMTPI = function(opCode)
{
    /*
     * TODO: Implement
     */
    this.regOp = -1;
    this.nStepCycles -= 1;
};

/**
 * opMTPS(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opMTPS = function(opCode)
{
    /*
     * TODO: Implement
     */
    this.regOp = -1;
    this.nStepCycles -= 1;
};

/**
 * opMUL(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opMUL = function(opCode)
{
    /*
     * TODO: Implement
     */
    this.regOp = -1;
    this.nStepCycles -= 1;
};

/**
 * opNEG(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opNEG = function(opCode)
{
    /*
     * TODO: Implement
     */
    this.regOp = -1;
    this.nStepCycles -= 1;
};

/**
 * opNEGB(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opNEGB = function(opCode)
{
    /*
     * TODO: Implement
     */
    this.regOp = -1;
    this.nStepCycles -= 1;
};

/**
 * opNOP(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opNOP = function(opCode)
{
    this.nStepCycles -= 1;
};

/**
 * opRESET(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opRESET = function(opCode)
{
    if (!(this.PSW & PDP11.PSW.CMODE)) {
        this.resetRegs();
        this.bus.reset();
        // display.data = this.regsGen[0];  // TODO: Review
    }
    this.nStepCycles -= 1;
};

/**
 * opROL(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opROL = function(opCode)
{
    /*
     * TODO: Implement
     */
    this.regOp = -1;
    this.nStepCycles -= 1;
};

/**
 * opROLB(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opROLB = function(opCode)
{
    /*
     * TODO: Implement
     */
    this.regOp = -1;
    this.nStepCycles -= 1;
};

/**
 * opROR(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opROR = function(opCode)
{
    /*
     * TODO: Implement
     */
    this.regOp = -1;
    this.nStepCycles -= 1;
};

/**
 * opRORB(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opRORB = function(opCode)
{
    /*
     * TODO: Implement
     */
    this.regOp = -1;
    this.nStepCycles -= 1;
};

/**
 * opRTI(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opRTI = function(opCode)
{
    /*
     * TODO: Implement
     */
    this.regOp = -1;
    this.nStepCycles -= 1;
};

/**
 * opRTT(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opRTT = function(opCode)
{
    /*
     * TODO: Implement
     */
    this.regOp = -1;
    this.nStepCycles -= 1;
};

/**
 * opSBC(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opSBC = function(opCode)
{
    /*
     * TODO: Implement
     */
    this.regOp = -1;
    this.nStepCycles -= 1;
};

/**
 * opSBCB(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opSBCB = function(opCode)
{
    /*
     * TODO: Implement
     */
    this.regOp = -1;
    this.nStepCycles -= 1;
};

/**
 * opSEC(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opSEC = function(opCode)
{
    this.setCF();
    this.nStepCycles -= 1;
};

/**
 * opSEN(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opSEN = function(opCode)
{
    this.setNF();
    this.nStepCycles -= 1;
};

/**
 * opSEV(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opSEV = function(opCode)
{
    this.setVF();
    this.nStepCycles -= 1;
};

/**
 * opSEZ(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opSEZ = function(opCode)
{
    this.setZF();
    this.nStepCycles -= 1;
};

/**
 * opSEx(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opSEx = function(opCode)
{
    if (opCode & 0x1) this.setCF();
    if (opCode & 0x2) this.setVF();
    if (opCode & 0x4) this.setZF();
    if (opCode & 0x8) this.setNF();
    this.nStepCycles -= 1;
};

/**
 * opSOB(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opSOB = function(opCode)
{
    /*
     * TODO: Implement
     */
    this.regOp = -1;
    this.nStepCycles -= 1;
};

/**
 * opSUB(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opSUB = function(opCode)
{
    this.updateWordByMode(opCode, this.readWordByMode(opCode >> PDP11.SRCMODE.SHIFT), PDP11.fnSUB);
    this.nStepCycles -= 1;
};

/**
 * opSXT(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opSXT = function(opCode)
{
    /*
     * TODO: Implement
     */
    this.regOp = -1;
    this.nStepCycles -= 1;
};

/**
 * opTRAP(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opTRAP = function(opCode)
{
    /*
     * TODO: Implement
     */
    this.regOp = -1;
    this.nStepCycles -= 1;
};

/**
 * opTST(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opTST = function(opCode)
{
    /*
     * TODO: Implement
     */
    this.regOp = -1;
    this.nStepCycles -= 1;
};

/**
 * opTSTB(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opTSTB = function(opCode)
{
    /*
     * TODO: Implement
     */
    this.regOp = -1;
    this.nStepCycles -= 1;
};

/**
 * opWAIT(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opWAIT = function(opCode)
{
    /*
     * TODO: Implement
     */
    this.regOp = -1;
    this.nStepCycles -= 1;
};

/**
 * opXOR(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opXOR = function(opCode)
{
    /*
     * TODO: Implement
     */
    this.regOp = -1;
    this.nStepCycles -= 1;
};

/**
 * opUndefined(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.opUndefined = function(opCode)
{
    this.trap(PDP11.TRAP.RESERVED, 48);
};

/**
 * op1170(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.op1170 = function(opCode)
{
    PDP11.aOpsXnnn_1170[opCode >> 12].call(this, opCode);
};

/**
 * op0Xnn_1170(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.op0Xnn_1170 = function(opCode)
{
    PDP11.aOps0Xnn_1170[(opCode >> 8) & 0xf].call(this, opCode);
};

/**
 * op0Ann_1170(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.op0Ann_1170 = function(opCode)
{
    PDP11.aOps0AXn_1170[(opCode >> 6) & 0x3].call(this, opCode);
};

/**
 * op0Bnn_1170(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.op0Bnn_1170 = function(opCode)
{
    PDP11.aOps0BXn_1170[(opCode >> 6) & 0x3].call(this, opCode);
};

/**
 * op0Cnn_1170(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.op0Cnn_1170 = function(opCode)
{
    PDP11.aOps0CXn_1170[(opCode >> 6) & 0x3].call(this, opCode);
};

/**
 * op0Dnn_1170(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.op0Dnn_1170 = function(opCode)
{
    PDP11.aOps0DXn_1170[(opCode >> 6) & 0x3].call(this, opCode);
};

/**
 * op00Xn_1170(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.op00Xn_1170 = function(opCode)
{
    PDP11.aOps00Xn_1170[(opCode >> 4) & 0xf].call(this, opCode);
};

/**
 * op00AX_1170(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.op00AX_1170 = function(opCode)
{
    PDP11.aOps00AX_1170[opCode & 0xf].call(this, opCode);
};

/**
 * op00BX_1170(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.op00BX_1170 = function(opCode)
{
    PDP11.aOps00BX_1170[opCode & 0xf].call(this, opCode);
};

/**
 * op000X_1170(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.op000X_1170 = function(opCode)
{
    PDP11.aOps000X_1170[opCode & 0xf].call(this, opCode);
};

/**
 * op7Xnn_1170(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.op7Xnn_1170 = function(opCode)
{
    PDP11.aOps7Xnn_1170[(opCode >> 8) & 0xf].call(this, opCode);
};

/**
 * op8Xnn_1170(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.op8Xnn_1170 = function(opCode)
{
    PDP11.aOps8Xnn_1170[(opCode >> 8) & 0xf].call(this, opCode);
};

/**
 * op8AXn_1170(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.op8AXn_1170 = function(opCode)
{
    PDP11.aOps8AXn_1170[(opCode >> 6) & 0x3].call(this, opCode);
};

/**
 * op8BXn_1170(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.op8BXn_1170 = function(opCode)
{
    PDP11.aOps8BXn_1170[(opCode >> 6) & 0x3].call(this, opCode);
};

/**
 * op8CXn_1170(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.op8CXn_1170 = function(opCode)
{
    PDP11.aOps8CXn_1170[(opCode >> 6) & 0x3].call(this, opCode);
};

/**
 * op8DXn_1170(opCode)
 *
 * @this {CPUStatePDP11}
 * @param {number} opCode
 */
PDP11.op8DXn_1170 = function(opCode)
{
    PDP11.aOps8DXn_1170[(opCode >> 6) & 0x3].call(this, opCode);
};

PDP11.aOpsXnnn_1170 = [
    PDP11.op0Xnn_1170,          // 0x0nnn
    PDP11.opMOV,                // 0x1nnn   MOV  01SSDD
    PDP11.opCMP,                // 0x2nnn   CMP  02SSDD
    PDP11.opBIT,                // 0x3nnn   BIT  03SSDD
    PDP11.opBIC,                // 0x4nnn   BIC  04SSDD
    PDP11.opBIS,                // 0x5nnn   BIS  05SSDD
    PDP11.opADD,                // 0x6nnn   ADD  06SSDD
    PDP11.op7Xnn_1170,          // 0x7nnn
    PDP11.op8Xnn_1170,          // 0x8nnn
    PDP11.opMOVB,               // 0x9nnn   MOVB 11SSDD
    PDP11.opCMPB,               // 0xAnnn   CMPB 12SSDD
    PDP11.opBITB,               // 0xBnnn   BITB 13SSDD
    PDP11.opBICB,               // 0xCnnn   BICB 14SSDD
    PDP11.opBISB,               // 0xDnnn   BISB 15SSDD
    PDP11.opSUB,                // 0xEnnn   SUB  16SSDD
    PDP11.opUndefined           // 0xFnnn
];

PDP11.aOps0Xnn_1170 = [
    PDP11.op00Xn_1170,          // 0x00nn
    PDP11.opBR,                 // 0x01nn
    PDP11.opBNE,                // 0x02nn
    PDP11.opBEQ,                // 0x03nn
    PDP11.opBGE,                // 0x04nn
    PDP11.opBLT,                // 0x05nn
    PDP11.opBGT,                // 0x06nn
    PDP11.opBLE,                // 0x07nn
    PDP11.opJSR,                // 0x08nn
    PDP11.opJSR,                // 0x09nn
    PDP11.op0Ann_1170,          // 0x0Ann
    PDP11.op0Bnn_1170,          // 0x0Bnn
    PDP11.op0Cnn_1170,          // 0x0Cnn
    PDP11.op0Dnn_1170,          // 0x0Dnn
    PDP11.opUndefined,          // 0x0Enn
    PDP11.opUndefined           // 0x0Fnn
];

PDP11.aOps00Xn_1170 = [
    PDP11.op000X_1170,          // 0x000n
    PDP11.opUndefined,          // 0x001n
    PDP11.opUndefined,          // 0x002n
    PDP11.opUndefined,          // 0x003n
    PDP11.opUndefined,          // 0x004n
    PDP11.opUndefined,          // 0x005n
    PDP11.opUndefined,          // 0x006n
    PDP11.opUndefined,          // 0x007n
    PDP11.opUndefined,          // 0x008n
    PDP11.opUndefined,          // 0x009n
    PDP11.op00AX_1170,          // 0x00An
    PDP11.op00BX_1170,          // 0x00Bn
    PDP11.opUndefined,          // 0x00Cn
    PDP11.opUndefined,          // 0x00Dn
    PDP11.opUndefined,          // 0x00En
    PDP11.opUndefined           // 0x00Fn
];

PDP11.aOps00AX_1170 = [
    PDP11.opNOP,                // 0x00A0
    PDP11.opCLC,                // 0x00A1
    PDP11.opCLV,                // 0x00A2
    PDP11.opCLx,                // 0x00A3
    PDP11.opCLZ,                // 0x00A4
    PDP11.opCLx,                // 0x00A5
    PDP11.opCLx,                // 0x00A6
    PDP11.opCLx,                // 0x00A7
    PDP11.opCLN,                // 0x00A8
    PDP11.opCLx,                // 0x00A9
    PDP11.opCLx,                // 0x00AA
    PDP11.opCLx,                // 0x00AB
    PDP11.opCLx,                // 0x00AC
    PDP11.opCLx,                // 0x00AD
    PDP11.opCLx,                // 0x00AE
    PDP11.opCLx                 // 0x00AF
];

PDP11.aOps00BX_1170 = [
    PDP11.opNOP,                // 0x00B0
    PDP11.opSEC,                // 0x00B1
    PDP11.opSEV,                // 0x00B2
    PDP11.opSEx,                // 0x00B3
    PDP11.opSEZ,                // 0x00B4
    PDP11.opSEx,                // 0x00B5
    PDP11.opSEx,                // 0x00B6
    PDP11.opSEx,                // 0x00B7
    PDP11.opSEN,                // 0x00B8
    PDP11.opSEx,                // 0x00B9
    PDP11.opSEx,                // 0x00BA
    PDP11.opSEx,                // 0x00BB
    PDP11.opSEx,                // 0x00BC
    PDP11.opSEx,                // 0x00BD
    PDP11.opSEx,                // 0x00BE
    PDP11.opSEx                 // 0x00BF
];

PDP11.aOps000X_1170 = [
    PDP11.opHALT,               // 0x0000
    PDP11.opWAIT,               // 0x0001
    PDP11.opRTI,                // 0x0002
    PDP11.opBPT,                // 0x0003
    PDP11.opIOT,                // 0x0004
    PDP11.opRESET,              // 0x0005
    PDP11.opRTT,                // 0x0006
    PDP11.opMFPT,               // 0x0007
    PDP11.opUndefined,          // 0x0008
    PDP11.opUndefined,          // 0x0009
    PDP11.opUndefined,          // 0x000A
    PDP11.opUndefined,          // 0x000B
    PDP11.opUndefined,          // 0x000C
    PDP11.opUndefined,          // 0x000D
    PDP11.opUndefined,          // 0x000E
    PDP11.opUndefined           // 0x000F
];

PDP11.aOps7Xnn_1170 = [
    PDP11.opMUL,                // 0x70nn
    PDP11.opMUL,                // 0x71nn
    PDP11.opDIV,                // 0x72nn
    PDP11.opDIV,                // 0x73nn
    PDP11.opASH,                // 0x74nn
    PDP11.opASH,                // 0x75nn
    PDP11.opASHC,               // 0x76nn
    PDP11.opASHC,               // 0x77nn
    PDP11.opXOR,                // 0x78nn
    PDP11.opXOR,                // 0x79nn
    PDP11.opUndefined,          // 0x7Ann
    PDP11.opUndefined,          // 0x7Bnn
    PDP11.opUndefined,          // 0x7Cnn
    PDP11.opUndefined,          // 0x7Dnn
    PDP11.opSOB,                // 0x7Enn
    PDP11.opSOB                 // 0x7Fnn
];

PDP11.aOps8Xnn_1170 = [
    PDP11.opBPL,                // 0x80nn
    PDP11.opBMI,                // 0x81nn
    PDP11.opBHI,                // 0x82nn
    PDP11.opBLOS,               // 0x83nn
    PDP11.opBVC,                // 0x84nn
    PDP11.opBVS,                // 0x85nn
    PDP11.opBCC,                // 0x86nn
    PDP11.opBCS,                // 0x87nn
    PDP11.opEMT,                // 0x88nn
    PDP11.opTRAP,               // 0x89nn
    PDP11.op8AXn_1170,          // 0x8Ann
    PDP11.op8BXn_1170,          // 0x8Bnn
    PDP11.op8CXn_1170,          // 0x8Cnn
    PDP11.op8DXn_1170,          // 0x8Dnn
    PDP11.opUndefined,          // 0x8Enn
    PDP11.opUndefined           // 0x8Fnn
];

PDP11.aOps0AXn_1170 = [
    PDP11.opCLR,                // 0x0A0n
    PDP11.opCOM,                // 0x0A4n
    PDP11.opINC,                // 0x0A8n
    PDP11.opDEC                 // 0x0ACn
];

PDP11.aOps0BXn_1170 = [
    PDP11.opNEG,                // 0x0B0n
    PDP11.opADC,                // 0x0B4n
    PDP11.opSBC,                // 0x0B8n
    PDP11.opTST                 // 0x0BCn
];

PDP11.aOps0CXn_1170 = [
    PDP11.opROR,                // 0x0C0n
    PDP11.opROL,                // 0x0C4n
    PDP11.opASR,                // 0x0C8n
    PDP11.opASL                 // 0x0CCn
];

PDP11.aOps0DXn_1170 = [
    PDP11.opMARK,               // 0x0D0n
    PDP11.opMFPI,               // 0x0D4n
    PDP11.opMTPI,               // 0x0D8n
    PDP11.opSXT                 // 0x0DCn
];

PDP11.aOps8AXn_1170 = [
    PDP11.opCLRB,               // 0x8A0n
    PDP11.opCOMB,               // 0x8A4n
    PDP11.opINCB,               // 0x8A8n
    PDP11.opDECB                // 0x8ACn
];

PDP11.aOps8BXn_1170 = [
    PDP11.opNEGB,               // 0x8B0n
    PDP11.opADCB,               // 0x8B4n
    PDP11.opSBCB,               // 0x8B8n
    PDP11.opTSTB                // 0x8BCn
];

PDP11.aOps8CXn_1170 = [
    PDP11.opRORB,               // 0x8C0n
    PDP11.opROLB,               // 0x8C4n
    PDP11.opASRB,               // 0x8C8n
    PDP11.opASLB                // 0x8CCn
];

PDP11.aOps8DXn_1170 = [
    PDP11.opMTPS,               // 0x8D0n
    PDP11.opMFPD,               // 0x8D4n
    PDP11.opMTPD,               // 0x8D8n
    PDP11.opMFPS                // 0x8DCn
];