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BizHawk/BizHawk.Emulation/CPUs/CP1610/Execute.cs

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Starting IntelliHawk with the CP1610, using the other processors in BizHawk, BlissJ, and this (http://wiki.intellivision.us/index.php?title=CP1610) page as references. -Definitions. --Registers, Flags, TotalExecutedCycles, PendingCycles, ReadMemory, and WriteMemory. -Execute. --Implemented opcodes 0x001-0x027 with the exception of 0x004 and 0x005.
2012-07-08 00:36:16 +00:00
using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace BizHawk.Emulation.CPUs.CP1610
{
public sealed partial class CP1610
{
-Created functions for calculating the flags. -Implemented ADCR. -Decoded all opcodes up to 0x23F. TODO: Try vecna's idea of testing the instructions by running a game and implementing instructions as I need them...but first I'll need to implement loading of an Intellivision game.
2012-07-08 01:58:06 +00:00
private void Calc_FlagC(int result)
{
FlagC = ((result & 0x10000) != 0);
}
private void Calc_FlagO_Add(int op1, int op2)
{
FlagO = (((op1 ^ (op1 + op2)) & 0x8000) != 0);
}
private void Calc_FlagS(int result)
{
FlagS = ((result & 0x8000) != 0);
}
private void Calc_FlagZ(int result)
{
FlagZ = (result == 0);
}
Starting IntelliHawk with the CP1610, using the other processors in BizHawk, BlissJ, and this (http://wiki.intellivision.us/index.php?title=CP1610) page as references. -Definitions. --Registers, Flags, TotalExecutedCycles, PendingCycles, ReadMemory, and WriteMemory. -Execute. --Implemented opcodes 0x001-0x027 with the exception of 0x004 and 0x005.
2012-07-08 00:36:16 +00:00
public void Execute(int cycles)
{
byte target;
-Created functions for calculating the flags. -Implemented ADCR. -Decoded all opcodes up to 0x23F. TODO: Try vecna's idea of testing the instructions by running a game and implementing instructions as I need them...but first I'll need to implement loading of an Intellivision game.
2012-07-08 01:58:06 +00:00
int op1;
int op2;
int temp;
int result;
Starting IntelliHawk with the CP1610, using the other processors in BizHawk, BlissJ, and this (http://wiki.intellivision.us/index.php?title=CP1610) page as references. -Definitions. --Registers, Flags, TotalExecutedCycles, PendingCycles, ReadMemory, and WriteMemory. -Execute. --Implemented opcodes 0x001-0x027 with the exception of 0x004 and 0x005.
2012-07-08 00:36:16 +00:00
PendingCycles += cycles;
while (PendingCycles > 0)
{
int opcode = ReadMemory(RegisterPC++) & 0x3FF;
switch (opcode)
{
case 0x000: // HLT
throw new NotImplementedException();
case 0x001: // SDBD
FlagD = true;
PendingCycles -= 4; TotalExecutedCycles += 4;
break;
case 0x002: // EIS
FlagI = true;
PendingCycles -= 4; TotalExecutedCycles += 4;
break;
case 0x003: // DIS
FlagI = false;
PendingCycles -= 4; TotalExecutedCycles += 4;
break;
case 0x004: // J, JE, JD, JSR, JSRE, JSRD
throw new NotImplementedException();
case 0x005: // TCI
throw new NotImplementedException();
case 0x006: // CLRC
FlagC = false;
PendingCycles -= 4; TotalExecutedCycles += 4;
break;
case 0x007: // SETC
FlagC = true;
PendingCycles -= 4; TotalExecutedCycles += 4;
break;
// INCR
case 0x008:
case 0x009:
case 0x00A:
case 0x00B:
case 0x00C:
case 0x00D:
case 0x00E:
case 0x00F:
target = (byte)(opcode & 0x7);
-Created functions for calculating the flags. -Implemented ADCR. -Decoded all opcodes up to 0x23F. TODO: Try vecna's idea of testing the instructions by running a game and implementing instructions as I need them...but first I'll need to implement loading of an Intellivision game.
2012-07-08 01:58:06 +00:00
result = (Register[target] + 1) & 0xFFFF;
Calc_FlagS(result);
Calc_FlagZ(result);
Register[target] = (ushort)result;
Starting IntelliHawk with the CP1610, using the other processors in BizHawk, BlissJ, and this (http://wiki.intellivision.us/index.php?title=CP1610) page as references. -Definitions. --Registers, Flags, TotalExecutedCycles, PendingCycles, ReadMemory, and WriteMemory. -Execute. --Implemented opcodes 0x001-0x027 with the exception of 0x004 and 0x005.
2012-07-08 00:36:16 +00:00
PendingCycles -= 6; TotalExecutedCycles += 6;
break;
// DECR
case 0x010:
case 0x011:
case 0x012:
case 0x013:
case 0x014:
case 0x015:
case 0x016:
case 0x017:
target = (byte)(opcode & 0x7);
-Created functions for calculating the flags. -Implemented ADCR. -Decoded all opcodes up to 0x23F. TODO: Try vecna's idea of testing the instructions by running a game and implementing instructions as I need them...but first I'll need to implement loading of an Intellivision game.
2012-07-08 01:58:06 +00:00
result = (Register[target] - 1) & 0xFFFF;
Calc_FlagS(result);
Calc_FlagZ(result);
Register[target] = (ushort)result;
Starting IntelliHawk with the CP1610, using the other processors in BizHawk, BlissJ, and this (http://wiki.intellivision.us/index.php?title=CP1610) page as references. -Definitions. --Registers, Flags, TotalExecutedCycles, PendingCycles, ReadMemory, and WriteMemory. -Execute. --Implemented opcodes 0x001-0x027 with the exception of 0x004 and 0x005.
2012-07-08 00:36:16 +00:00
PendingCycles -= 6; TotalExecutedCycles += 6;
break;
// COMR
case 0x018:
case 0x019:
case 0x01A:
case 0x01B:
case 0x01C:
case 0x01D:
case 0x01E:
case 0x01F:
target = (byte)(opcode & 0x7);
-Created functions for calculating the flags. -Implemented ADCR. -Decoded all opcodes up to 0x23F. TODO: Try vecna's idea of testing the instructions by running a game and implementing instructions as I need them...but first I'll need to implement loading of an Intellivision game.
2012-07-08 01:58:06 +00:00
result = Register[target] ^ 0xFFFF;
Calc_FlagS(result);
Calc_FlagZ(result);
Register[target] = (ushort)result;
Starting IntelliHawk with the CP1610, using the other processors in BizHawk, BlissJ, and this (http://wiki.intellivision.us/index.php?title=CP1610) page as references. -Definitions. --Registers, Flags, TotalExecutedCycles, PendingCycles, ReadMemory, and WriteMemory. -Execute. --Implemented opcodes 0x001-0x027 with the exception of 0x004 and 0x005.
2012-07-08 00:36:16 +00:00
PendingCycles -= 6; TotalExecutedCycles += 6;
break;
// NEGR
case 0x020:
case 0x021:
case 0x022:
case 0x023:
case 0x024:
case 0x025:
case 0x026:
case 0x027:
target = (byte)(opcode & 0x7);
-Created functions for calculating the flags. -Implemented ADCR. -Decoded all opcodes up to 0x23F. TODO: Try vecna's idea of testing the instructions by running a game and implementing instructions as I need them...but first I'll need to implement loading of an Intellivision game.
2012-07-08 01:58:06 +00:00
op1 = Register[target];
temp = (op1 ^ 0xFFFF);
result = temp + 1;
Calc_FlagC(result);
Calc_FlagO_Add(temp, 1);
Calc_FlagS(result);
Calc_FlagZ(result);
result &= 0xFFFF;
Register[target] = (ushort)result;
PendingCycles -= 6; TotalExecutedCycles += 6;
break;
// ADCR
case 0x028:
case 0x029:
case 0x02A:
case 0x02B:
case 0x02C:
case 0x02D:
case 0x02E:
case 0x02F:
target = (byte)(opcode & 0x7);
op1 = Register[target];
op2 = FlagC ? 1 : 0;
result = op1 + op2;
Calc_FlagC(result);
Calc_FlagO_Add(op1, op2);
Calc_FlagS(result);
Calc_FlagZ(result);
result &= 0xFFFF;
Register[target] = (ushort)result;
Starting IntelliHawk with the CP1610, using the other processors in BizHawk, BlissJ, and this (http://wiki.intellivision.us/index.php?title=CP1610) page as references. -Definitions. --Registers, Flags, TotalExecutedCycles, PendingCycles, ReadMemory, and WriteMemory. -Execute. --Implemented opcodes 0x001-0x027 with the exception of 0x004 and 0x005.
2012-07-08 00:36:16 +00:00
PendingCycles -= 6; TotalExecutedCycles += 6;
break;
-Created functions for calculating the flags. -Implemented ADCR. -Decoded all opcodes up to 0x23F. TODO: Try vecna's idea of testing the instructions by running a game and implementing instructions as I need them...but first I'll need to implement loading of an Intellivision game.
2012-07-08 01:58:06 +00:00
// GSWD
case 0x030:
case 0x031:
case 0x032:
case 0x033:
throw new NotImplementedException();
// NOP
case 0x034:
case 0x035:
throw new NotImplementedException();
// SIN
case 0x036:
case 0x037:
throw new NotImplementedException();
// RSWD
case 0x038:
case 0x039:
case 0x03A:
case 0x03B:
case 0x03C:
case 0x03D:
case 0x03E:
case 0x03F:
throw new NotImplementedException();
// SWAP
case 0x040:
case 0x041:
case 0x042:
case 0x043:
case 0x044:
case 0x045:
case 0x046:
case 0x047:
throw new NotImplementedException();
// SLL
case 0x048:
case 0x049:
case 0x04A:
case 0x04B:
case 0x04C:
case 0x04D:
case 0x04E:
case 0x04F:
throw new NotImplementedException();
// RLC
case 0x050:
case 0x051:
case 0x052:
case 0x053:
case 0x054:
case 0x055:
case 0x056:
case 0x057:
throw new NotImplementedException();
// SLLC
case 0x058:
case 0x059:
case 0x05A:
case 0x05B:
case 0x05C:
case 0x05D:
case 0x05E:
case 0x05F:
throw new NotImplementedException();
// SLR
case 0x060:
case 0x061:
case 0x062:
case 0x063:
case 0x064:
case 0x065:
case 0x066:
case 0x067:
throw new NotImplementedException();
// SAR
case 0x068:
case 0x069:
case 0x06A:
case 0x06B:
case 0x06C:
case 0x06D:
case 0x06E:
case 0x06F:
throw new NotImplementedException();
// RRC
case 0x070:
case 0x071:
case 0x072:
case 0x073:
case 0x074:
case 0x075:
case 0x076:
case 0x077:
throw new NotImplementedException();
// SARC
case 0x078:
case 0x079:
case 0x07A:
case 0x07B:
case 0x07C:
case 0x07D:
case 0x07E:
case 0x07F:
throw new NotImplementedException();
// MOVR
case 0x080:
case 0x081:
case 0x082:
case 0x083:
case 0x084:
case 0x085:
case 0x086:
case 0x087:
case 0x088:
case 0x089:
case 0x08A:
case 0x08B:
case 0x08C:
case 0x08D:
case 0x08E:
case 0x08F:
case 0x090:
case 0x091:
case 0x092:
case 0x093:
case 0x094:
case 0x095:
case 0x096:
case 0x097:
case 0x098:
case 0x099:
case 0x09A:
case 0x09B:
case 0x09C:
case 0x09D:
case 0x09E:
case 0x09F:
case 0x0A0:
case 0x0A1:
case 0x0A2:
case 0x0A3:
case 0x0A4:
case 0x0A5:
case 0x0A6:
case 0x0A7:
case 0x0A8:
case 0x0A9:
case 0x0AA:
case 0x0AB:
case 0x0AC:
case 0x0AD:
case 0x0AE:
case 0x0AF:
case 0x0B0:
case 0x0B1:
case 0x0B2:
case 0x0B3:
case 0x0B4:
case 0x0B5:
case 0x0B6:
case 0x0B7:
case 0x0B8:
case 0x0B9:
case 0x0BA:
case 0x0BB:
case 0x0BC:
case 0x0BD:
case 0x0BE:
case 0x0BF:
throw new NotImplementedException();
// ADDR
case 0x0C0:
case 0x0C1:
case 0x0C2:
case 0x0C3:
case 0x0C4:
case 0x0C5:
case 0x0C6:
case 0x0C7:
case 0x0C8:
case 0x0C9:
case 0x0CA:
case 0x0CB:
case 0x0CC:
case 0x0CD:
case 0x0CE:
case 0x0CF:
case 0x0D0:
case 0x0D1:
case 0x0D2:
case 0x0D3:
case 0x0D4:
case 0x0D5:
case 0x0D6:
case 0x0D7:
case 0x0D8:
case 0x0D9:
case 0x0DA:
case 0x0DB:
case 0x0DC:
case 0x0DD:
case 0x0DE:
case 0x0DF:
case 0x0E0:
case 0x0E1:
case 0x0E2:
case 0x0E3:
case 0x0E4:
case 0x0E5:
case 0x0E6:
case 0x0E7:
case 0x0E8:
case 0x0E9:
case 0x0EA:
case 0x0EB:
case 0x0EC:
case 0x0ED:
case 0x0EE:
case 0x0EF:
case 0x0F0:
case 0x0F1:
case 0x0F2:
case 0x0F3:
case 0x0F4:
case 0x0F5:
case 0x0F6:
case 0x0F7:
case 0x0F8:
case 0x0F9:
case 0x0FA:
case 0x0FB:
case 0x0FC:
case 0x0FD:
case 0x0FE:
case 0x0FF:
throw new NotImplementedException();
// SUBR
case 0x100:
case 0x101:
case 0x102:
case 0x103:
case 0x104:
case 0x105:
case 0x106:
case 0x107:
case 0x108:
case 0x109:
case 0x10A:
case 0x10B:
case 0x10C:
case 0x10D:
case 0x10E:
case 0x10F:
case 0x110:
case 0x111:
case 0x112:
case 0x113:
case 0x114:
case 0x115:
case 0x116:
case 0x117:
case 0x118:
case 0x119:
case 0x11A:
case 0x11B:
case 0x11C:
case 0x11D:
case 0x11E:
case 0x11F:
case 0x120:
case 0x121:
case 0x122:
case 0x123:
case 0x124:
case 0x125:
case 0x126:
case 0x127:
case 0x128:
case 0x129:
case 0x12A:
case 0x12B:
case 0x12C:
case 0x12D:
case 0x12E:
case 0x12F:
case 0x130:
case 0x131:
case 0x132:
case 0x133:
case 0x134:
case 0x135:
case 0x136:
case 0x137:
case 0x138:
case 0x139:
case 0x13A:
case 0x13B:
case 0x13C:
case 0x13D:
case 0x13E:
case 0x13F:
throw new NotImplementedException();
// CMPR
case 0x140:
case 0x141:
case 0x142:
case 0x143:
case 0x144:
case 0x145:
case 0x146:
case 0x147:
case 0x148:
case 0x149:
case 0x14A:
case 0x14B:
case 0x14C:
case 0x14D:
case 0x14E:
case 0x14F:
case 0x150:
case 0x151:
case 0x152:
case 0x153:
case 0x154:
case 0x155:
case 0x156:
case 0x157:
case 0x158:
case 0x159:
case 0x15A:
case 0x15B:
case 0x15C:
case 0x15D:
case 0x15E:
case 0x15F:
case 0x160:
case 0x161:
case 0x162:
case 0x163:
case 0x164:
case 0x165:
case 0x166:
case 0x167:
case 0x168:
case 0x169:
case 0x16A:
case 0x16B:
case 0x16C:
case 0x16D:
case 0x16E:
case 0x16F:
case 0x170:
case 0x171:
case 0x172:
case 0x173:
case 0x174:
case 0x175:
case 0x176:
case 0x177:
case 0x178:
case 0x179:
case 0x17A:
case 0x17B:
case 0x17C:
case 0x17D:
case 0x17E:
case 0x17F:
throw new NotImplementedException();
// ANDR
case 0x180:
case 0x181:
case 0x182:
case 0x183:
case 0x184:
case 0x185:
case 0x186:
case 0x187:
case 0x188:
case 0x189:
case 0x18A:
case 0x18B:
case 0x18C:
case 0x18D:
case 0x18E:
case 0x18F:
case 0x190:
case 0x191:
case 0x192:
case 0x193:
case 0x194:
case 0x195:
case 0x196:
case 0x197:
case 0x198:
case 0x199:
case 0x19A:
case 0x19B:
case 0x19C:
case 0x19D:
case 0x19E:
case 0x19F:
case 0x1A0:
case 0x1A1:
case 0x1A2:
case 0x1A3:
case 0x1A4:
case 0x1A5:
case 0x1A6:
case 0x1A7:
case 0x1A8:
case 0x1A9:
case 0x1AA:
case 0x1AB:
case 0x1AC:
case 0x1AD:
case 0x1AE:
case 0x1AF:
case 0x1B0:
case 0x1B1:
case 0x1B2:
case 0x1B3:
case 0x1B4:
case 0x1B5:
case 0x1B6:
case 0x1B7:
case 0x1B8:
case 0x1B9:
case 0x1BA:
case 0x1BB:
case 0x1BC:
case 0x1BD:
case 0x1BE:
case 0x1BF:
throw new NotImplementedException();
// XORR
case 0x1C0:
case 0x1C1:
case 0x1C2:
case 0x1C3:
case 0x1C4:
case 0x1C5:
case 0x1C6:
case 0x1C7:
case 0x1C8:
case 0x1C9:
case 0x1CA:
case 0x1CB:
case 0x1CC:
case 0x1CD:
case 0x1CE:
case 0x1CF:
case 0x1D0:
case 0x1D1:
case 0x1D2:
case 0x1D3:
case 0x1D4:
case 0x1D5:
case 0x1D6:
case 0x1D7:
case 0x1D8:
case 0x1D9:
case 0x1DA:
case 0x1DB:
case 0x1DC:
case 0x1DD:
case 0x1DE:
case 0x1DF:
case 0x1E0:
case 0x1E1:
case 0x1E2:
case 0x1E3:
case 0x1E4:
case 0x1E5:
case 0x1E6:
case 0x1E7:
case 0x1E8:
case 0x1E9:
case 0x1EA:
case 0x1EB:
case 0x1EC:
case 0x1ED:
case 0x1EE:
case 0x1EF:
case 0x1F0:
case 0x1F1:
case 0x1F2:
case 0x1F3:
case 0x1F4:
case 0x1F5:
case 0x1F6:
case 0x1F7:
case 0x1F8:
case 0x1F9:
case 0x1FA:
case 0x1FB:
case 0x1FC:
case 0x1FD:
case 0x1FE:
case 0x1FF:
throw new NotImplementedException();
// Branch Forward, no External Condition
case 0x200: // B
case 0x201: // BC
case 0x202: // BOV
case 0x203: // BPL
case 0x204: // BEQ
case 0x205: // BLT
case 0x206: // BLE
case 0x207: // BUSC
case 0x208: // NOPP
case 0x209: // BNC
case 0x20A: // BNOV
case 0x20B: // BMI
case 0x20C: // BNEQ
case 0x20D: // BGE
case 0x20E: // BGT
case 0x20F: // BESC
// Branch Forward, Exteranl Condition (BEXT)
case 0x210:
case 0x211:
case 0x212:
case 0x213:
case 0x214:
case 0x215:
case 0x216:
case 0x217:
case 0x218:
case 0x219:
case 0x21A:
case 0x21B:
case 0x21C:
case 0x21D:
case 0x21E:
case 0x21F:
// Branch Reverse, no External Condition
case 0x220: // B
case 0x221: // BC
case 0x222: // BOV
case 0x223: // BPL
case 0x224: // BEQ
case 0x225: // BLT
case 0x226: // BLE
case 0x227: // BUSC
case 0x228: // NOPP
case 0x229: // BNC
case 0x22A: // BNOV
case 0x22B: // BMI
case 0x22C: // BNEQ
case 0x22D: // BGE
case 0x22E: // BGT
case 0x22F: // BESC
// Branch Reverse, Exteranl Condition (BEXT)
case 0x230:
case 0x231:
case 0x232:
case 0x233:
case 0x234:
case 0x235:
case 0x236:
case 0x237:
case 0x238:
case 0x239:
case 0x23A:
case 0x23B:
case 0x23C:
case 0x23D:
case 0x23E:
case 0x23F:
throw new NotImplementedException();
Starting IntelliHawk with the CP1610, using the other processors in BizHawk, BlissJ, and this (http://wiki.intellivision.us/index.php?title=CP1610) page as references. -Definitions. --Registers, Flags, TotalExecutedCycles, PendingCycles, ReadMemory, and WriteMemory. -Execute. --Implemented opcodes 0x001-0x027 with the exception of 0x004 and 0x005.
2012-07-08 00:36:16 +00:00
default:
throw new NotImplementedException();
}
}
}
}
}