static void RunFile(string path)
{
var i8080 = new Intel8080(new MemoryBus(), new InputOutputBus());
var bytes = File.ReadAllBytes(path);
Console.WriteLine(string.Format("{0}: size {1}", path.Split('/').Last(), bytes.Length));
Console.WriteLine("--------------------");
// Copy the program to memory
i8080.Memory.copy_to(bytes.Select((b) => (int)b).ToArray(), 0x0100);
// The first 256 bytes if the 8080 usually contains
// The first 256 bytes if the 8080 usually contain the interrupt table (RST 0 - 7)
// and system functions for CP/M or some other BDOS. The interface into BDOS involves
// setting the 'C' register to a software interrupt, then unconditionally CALL
// memory location 5 (the CP/M entrypoint). The test scripts make use of interrupt
// 0x02, which takes the value of E as a char code and prints it to the screen.
//
// As asm:
//
// MOV E, A ; Move the value of A (a char code) into E
// MVI C, 2 ; Set the value of C to 2 (CP/M software interrupt for print)
// CALL 5 ; Return to the CP/M BDOS
//
//
i8080.Memory.write(5, 0xC9); // Inject RET at 0x0005 to handle "CALL 5".
// First 256 bytes of memory are reserved for system
// use, so classic 8080 programs usually start at 0x100
i8080.ProgramCounter = (0x100); // Jump to entrypoint
File.Delete(path + ".LOG");
var writer = File.CreateText(path + ".LOG");
writer.AutoFlush = true;
while(true)
{
var pc = i8080.ProgramCounter;
if(i8080.Memory.read((UInt16)pc) == 0x76)
{
writer.Write("HLT at " + pc);
Console.Write("HLT at " + pc);
break;
}
if(pc == 0x0005)
{
if(i8080.REG_C == 9)
for(UInt16 i = (UInt16)i8080.REG16_DE; i8080.Memory.read(i) != 0x24; i++)
{
writer.Write((char)i8080.Memory.read(i));
var mem = i8080.Memory.read(i);
if (supress_bell)
{
if (mem != 7)
Console.Write(String.Format("{0}", (char) mem));
}
else
{
Console.Write(String.Format("{0}", (char)mem));
}
}
if(i8080.REG_C == 2)
{
writer.Write((char)i8080.REG_E);
var mem = i8080.REG_E;
if (supress_bell)
{
if (mem != 7)
Console.Write(String.Format("{0}", (char) mem));
}
else
{
Console.Write(String.Format("{0}", (char)mem));
}
}
}
i8080.StepInstruction();
if(i8080.ProgramCounter == 0)
{
writer.WriteLine();
writer.WriteLine("[Jump to 0000 from " + pc.ToString("X4") + "]");
Console.WriteLine();
Console.WriteLine("[Jump to 0000 from " + pc.ToString("X4") + "]");
break;
}
}
Console.WriteLine();
GC.Collect();
}
static void Watch(string path)
{
var intel8080 = new Intel8080(new MemoryBus(), new InputOutputBus());
var bytes = System.IO.File.ReadAllBytes(path);
Console.WriteLine(string.Format("{0}: size {1}", path.Split('/').Last(), bytes.Length));
intel8080.Memory.copy_to(bytes.Select((b) => (int)b).ToArray(), 0x0100);
intel8080.Memory.write(5, 0xC9);
intel8080.ProgramCounter = (0x100);
File.Delete(path + ".LOG");
var writer = File.CreateText(path + ".LOG");
writer.AutoFlush = true;
Stopwatch masterSW = new Stopwatch();
masterSW.Start();
int clockCycles = 0;
int totalTicks = 0;
while (true)
{
clockCycles++;
var pc = intel8080.ProgramCounter;
if (intel8080.Memory.read((UInt16)pc) == 0x76)
{
writer.Write("HLT at " + pc.ToString());
Console.Write("HLT at " + pc.ToString());
break;
}
/*if (pc == 0x0005)
{
if (i8080.REG_C == 9)
for (UInt16 i = (UInt16)i8080.REG16_DE; i8080.memory.read(i) != 0x24; i++)
{
writer.Write((char)i8080.memory.read(i));
Console.Write((char)i8080.memory.read(i));
}
if (i8080.REG_C == 2)
{
writer.Write((char)i8080.REG_E);
Console.Write((char)i8080.REG_E);
}
}*/
totalTicks += intel8080.StepInstruction();
Console.Clear();
Console.WriteLine(string.Format(
"PC {0,5} {0:X4}\tSP {1,5} {1:X4}",
(UInt16)intel8080.ProgramCounter,
(UInt16)intel8080.StackPointer));
Console.WriteLine(string.Format(
"A {0,4} {0:X2} | B {1,4} {1:X2} | D {2,4} {2:X2} | H {3,4} {3:X2}",
intel8080.REG_A,
intel8080.REG_B,
intel8080.REG_D,
intel8080.REG_H));
Console.WriteLine(string.Format(
" | C {0,4} {0:X2} | E {1,4} {1:X2} | L {2,4} {2:X2}",
intel8080.REG_C,
intel8080.REG_E,
intel8080.REG_L));
Console.WriteLine(string.Format(
" | BC {0,6} {0:X4} | DE {1,6} {1:X4} | HL {2,6} {2:X4}",
intel8080.REG16_BC,
intel8080.REG16_DE,
intel8080.REG16_HL));
if (intel8080.ProgramCounter == 0)
{
writer.WriteLine();
writer.WriteLine("[!] Jump to 0000 from " + pc.ToString("X4"));
Console.WriteLine();
Console.WriteLine("[!] Jump to 0000 from " + pc.ToString("X4"));
break;
}
}
Console.WriteLine(string.Format("Instruction Cycles: {0}", clockCycles));
Console.WriteLine(string.Format("Clock Cycles: {0}", totalTicks));
masterSW.Stop();
Console.WriteLine(string.Format("Stopwatch: {0} ms / {1} ticks", masterSW.ElapsedMilliseconds, masterSW.ElapsedTicks));
GC.Collect();
}