public override bool Verify(string[] lines, TheCpu cpu, out string error)
{
if (lines.Length > 0)
{
if (lines[0].ToUpper() != "CONSTANT")
{
error = "Невалидна инструкция";
return(false);
}
}
if (lines.Length > 1)
{
if (!lines[1].EndsWith(","))
{
error = "Липсваща запетайка";
return(true);
}
}
if (lines.Length == 3)
{
if (cpu.ValidLiteral(lines[2]))
{
// CONSTANT literal, kk
var name = lines[1].Remove(lines[1].Length - 1).ToUpper();
if (cpu.Literals.ContainsKey(name))
{
cpu.Literals[name] = cpu.GetLiteral(lines[2]);
}
else
{
cpu.Literals.Add(name, cpu.GetLiteral(lines[2]));
}
error = null;
return(true);
}
else
{
error = "Вторият аргумент на инструкцията трябва да е литерал";
return(true);
}
}
error = "Невалидна инструкция";
return(false);
}
protected override void ExecuteV2(string register, string literal, TheCpu cpu)
{
var sX = cpu.GetRegister(register);
var kk = cpu.GetLiteral(literal);
cpu.WriteRAM(kk, sX);
cpu.PC++;
}
protected override void ExecuteV2(string register, string literal, TheCpu cpu)
{
var kk = cpu.GetLiteral(literal);
cpu.SetRegister(register, kk);
cpu.PC++;
}
protected override void ExecuteV2(string register, string literal, TheCpu cpu)
{
var sX = cpu.GetRegister(register);
var kk = cpu.GetLiteral(literal);
var r = (byte)(sX & kk);
cpu.ZERO = sX == kk;
cpu.CARRY = sX > kk;
cpu.PC++;
}
protected override void ExecuteV2(string register, string literal, TheCpu cpu)
{
var sX = cpu.GetRegister(register);
var kk = cpu.GetLiteral(literal);
var r = (byte)((sX - kk) % 256);
cpu.SetRegister(register, r);
cpu.ZERO = ((sX - kk) == 0);
cpu.CARRY = ((sX - kk) < 0);
cpu.PC++;
}
protected override void ExecuteV2(string register, string literal, TheCpu cpu)
{
var sX = cpu.GetRegister(register);
var kk = cpu.GetLiteral(literal);
var CARRY = (cpu.CARRY ? 1 : 0);
var r = (byte)((sX + kk + CARRY) % 256);
cpu.SetRegister(register, r);
cpu.ZERO = (r == 0);
cpu.CARRY = ((sX + kk + CARRY) > 0xFF);
cpu.PC++;
}
protected override void ExecuteV2(string register, string literal, TheCpu cpu)
{
var sX = cpu.GetRegister(register);
var kk = cpu.GetLiteral(literal);
var r = (byte)(sX & kk);
var bitCount = 0;
if ((r & 1) == 1)
{
bitCount++;
}
if ((r & 2) == 2)
{
bitCount++;
}
if ((r & 4) == 4)
{
bitCount++;
}
if ((r & 8) == 8)
{
bitCount++;
}
if ((r & 16) == 16)
{
bitCount++;
}
if ((r & 32) == 32)
{
bitCount++;
}
if ((r & 64) == 64)
{
bitCount++;
}
if ((r & 128) == 128)
{
bitCount++;
}
cpu.ZERO = (r == 0);
cpu.CARRY = (bitCount % 2) == 1;
cpu.PC++;
}
