private async Task ExecuteIO()
{
bool reg2ORAddress = false;
int fourthValue = addr;
//if the address is 0, set the addr
if (addr == 0)
{
reg2ORAddress = true;
fourthValue = reg2;
}
switch (OPCODE)
{
case 0: // 00: RD
// //NOTE: in this snippet, it just reads to acc. additional setup required to send to a different register
Driver._MMULock.Wait();
await DMA.IOExecution(true, this, reg1, fourthValue, reg2ORAddress);
Driver._MMULock.Release();
break;
case 1: // 01: WR
isWaiting = true;
await DMA.IOExecution(false, this, reg1, fourthValue, reg2ORAddress);
Driver._MMULock.Release();
break;
default:
throw new Exception("OPCode invalid, check the hex to dec conversion: " + OPCODE);
}
// Console.WriteLine($"IO: OPCODE {OPCODE} | REG1 : {reg1} | REG2 : {reg2} |ADDR {addr}");
}
private void ExecuteCondi()
{
string second;
int preAddr = addr;
addr /= 4;
if (dReg == 0)
{
second = Utilities.WordFill(Utilities.DecToHex(preAddr));
}
else
{
second = MMU.ReadWord(addr, activeProgram).Value;
}
switch (OPCODE)
{
case 2: // 02: ST
Driver._MMULock.Wait();
DMA.IOExecution(false, this, bReg, addr, false).GetAwaiter().GetResult();
Driver._MMULock.Release();
break;
case 3: // 03: LW
Driver._MMULock.Wait();
DMA.IOExecution(true, this, dReg, addr, false).GetAwaiter().GetResult();
Driver._MMULock.Release();
break;
case 11: // 0B: MOVI
registers[dReg].Value = Utilities.WordFill(second);
break;
case 12: // 0C: ADDI
registers[dReg] = registers[dReg] + MMU.ReadWord(addr, activeProgram);
break;
case 13: // 0D: MULI
registers[dReg] = registers[dReg] * MMU.ReadWord(addr, activeProgram);
break;
case 14: // 0E: DIVI
registers[dReg] = registers[dReg] / MMU.ReadWord(addr, activeProgram);
break;
case 15: // 0F: LDI
registers[dReg] = new Word(second);
break;
case 17: // 11: SLTI
registers[dReg].Value = Utilities.DecToHexFullAddr(registers[sReg0].ValueAsInt < addr ? 1 : 0);
break;
case 21: // 15: BEQ
PC = registers[bReg] == registers[dReg] ? preAddr : PC;
break;
case 22: // 16: BNE
PC = registers[bReg] != registers[dReg] ? preAddr : PC;
break;
case 23: // 17: BEZ
PC = registers[bReg].ValueAsInt == 0 ? preAddr : PC;
break;
case 24: // 18: BNZ
PC = registers[bReg].ValueAsInt != 0 ? preAddr : PC;
break;
case 25: // 19: BGZ
PC = registers[bReg].ValueAsInt > 0 ? preAddr : PC;
break;
case 26: // 1A: BLZ
PC = registers[bReg].ValueAsInt < 0 ? preAddr : PC;
break;
default:
throw new Exception("OPCode invalid, check the hex to dec conversion: " + OPCODE);
}
// Console.WriteLine($"CONDI: OPCODE {OPCODE} | B = {bReg} | D = {dReg} | ADDR = {addr} | SECOND = {second}");
}
