public static string SUBforDiv(string val1, string val2)
{
if (val1.Length > val2.Length)
{
val2 = "0" + val2;
}
string s = "";
StringBuilder ans = new StringBuilder(new string('0', val1.Length));
int over = 0;
val2 = Checker.NEG(val2);
for (int i = val1.Length - 1; i > -1; i--)
{
if (val1[i] == '1' && val2[i] == '1')
{
if (over == 0)
{
ans[i] = '0';
}
else
{
ans[i] = '1';
}
over = 1;
}
else
if (val1[i] == '0' && val2[i] == '0')
{
if (over == 0)
{
ans[i] = '0';
}
else
{
ans[i] = '1';
}
over = 0;
}
else
{
if (over == 0)
{
ans[i] = '1';
over = 0;
}
else
{
ans[i] = '0';
over = 1;
}
}
}
s = ans.ToString();
s = s.TrimStart('0');
return(s == "" ? "0" : s);
}
public static void VisualCommandMUL(string val)
{
int val1 = (CPU.registors["a"] as Register).ReturnNumber();
int val2 = (CPU.registors[val[0].ToString()] as Register).ReturnNumber(val);
string first = "", second = "";
Checker.ConvertBinaryValueForDIV(val1, val2, ref first, ref second);
//Console.WriteLine(Convert.ToString(val2, 2));
string help = new string('0', first.Length + second.Length);
StringBuilder ans = new StringBuilder(help);
int len = ans.Length;
int step = 0;
bool exit = false;
Console.WriteLine("{0, -7}| {1}", "AX", first.PadLeft(len));
Console.WriteLine("{0, -7}| {1}", val.ToUpper(), second.PadLeft(len));
Console.WriteLine(new string('-', ans.Length + 9));
int i = second.Length;
//int t = second.Length;
while (true)
{
i--;
//t--;
if (i < 0)
{
break;
}
help = "";
for (int j = 0; j < first.Length; j++)
{
if (first[j] == '0' || second[i] == '0')
{
help += '0';
}
else
{
help += '1';
}
}
int k = first.Length - 1;
int over = 0, j1 = 0;
for (int j = len - 1; k > -1; j--, k--)
{
int prval = ((ans[j] - '0') + over + (help[k] - '0'));
ans[j] = (char)(prval % 2 + '0');
over = prval / 2;
j1 = j;
}
if (over > 0)
{
ans[j1 - 1] = '1';
}
if (!exit)
{
if (Console.ReadKey(true).Key == ConsoleKey.Escape)
{
exit = true;
}
}
Console.WriteLine("step {0}| {1}", (++step).ToString("D2"), help.PadLeft(len--));
}
Console.WriteLine(new string('-', ans.Length + 9));
Console.WriteLine("{0, -7}| {1}", "answer", ans);
string Ans = ans.ToString();
if (Ans.Length > 16)
{
Ans = Ans.Substring(Ans.Length - 16);
}
int x;
if (Checker.IsNegativeResultForMUL(val1, val2))
{
x = val1 * val2;
Ans = Checker.NEG(Ans);
Console.WriteLine("Answer: {0} => {1} = {2} ({3})\n", ans, Ans, x, x.ToString("X"));
}
else
{
x = Convert.ToInt32(Ans, 2);
Console.WriteLine("Answer: {0} => {1} = {2} ({3})\n", ans, Ans, x, x.ToString("X"));
}
help = x.ToString("X8");
if (help.Length > 8)
{
help = help.Substring(help.Length - 7);
}
Console.WriteLine("Result: {0} = {1}({4}), DX = {2}, AX = {3}\n", Ans, x, help.Substring(0, 4), help.Substring(4), help);
}
