private void Z80OnBeforeInstructionFetch(object sender, BeforeInstructionFetchEventArgs e)
{
if (((IZ80Processor)sender).Registers.PC == BDOS)
{
dosFunctionsExecutor.ExecuteFunctionCall();
((IZ80Processor)sender).ExecuteRet();
}
}
private void Cpu_BeforeInstructionFetch(object sender, BeforeInstructionFetchEventArgs e)
{
if (cpu.Registers.PC == EXTBIO)
{
HandleExtbioCall();
}
if (cpu.Registers.PC == EntryPointAddress && slots.GetCurrentSlot(1) == slotNumber)
{
HandleEntryPointCall();
}
}
private void Cpu_BeforeInstructionFetch(object sender, BeforeInstructionFetchEventArgs eventArgs)
{
var count = Math.Min(PastedText.Count, 8);
if (count > 0 && (processor.Memory[GETPNT] == processor.Memory[PUTPNT]))
{
processor.Memory.SetContents(KEYBUF, PastedText.Take(count).ToArray(), 0, count);
WriteShort(GETPNT, KEYBUF);
WriteShort(PUTPNT, KEYBUF + count);
PastedText.RemoveRange(0, count);
}
}
private void Z80OnBeforeInstructionFetch(object sender, BeforeInstructionFetchEventArgs args)
{
//Absolutely minimum implementation of CP/M for ZEXALL and ZEXDOC to work
var z80 = (IZ80Processor)sender;
if (z80.Registers.PC == 0)
{
args.ExecutionStopper.Stop();
return;
}
else if (z80.Registers.PC != 5)
{
return;
}
var function = z80.Registers.C;
if (function == 9)
{
var messageAddress = z80.Registers.DE;
var bytesToPrint = new List <byte>();
byte byteToPrint;
while ((byteToPrint = z80.Memory[messageAddress]) != DollarCode)
{
bytesToPrint.Add(byteToPrint);
messageAddress++;
}
var stringToPrint = Encoding.ASCII.GetString(bytesToPrint.ToArray());
Console.Write(stringToPrint);
}
else if (function == 2)
{
var byteToPrint = z80.Registers.E;
var charToPrint = Encoding.ASCII.GetString(new[] { byteToPrint })[0];
Console.Write(charToPrint);
}
z80.ExecuteRet();
}
private void Cpu_BeforeInstructionFetch(object sender, BeforeInstructionFetchEventArgs e)
{
var pc = cpu.Registers.PC;
if (addressesToLog.ContainsKey(pc))
{
var symbol = addressesToLog[pc];
Debug.WriteLine($"{indentation}--> {symbol}: HL=0x{cpu.Registers.HL:X4}, DE=0x{cpu.Registers.DE:X4}, BC={cpu.Registers.BC} (0x{cpu.Registers.BC:X4}), A={cpu.Registers.A}, Cy={cpu.Registers.CF}");
var returnAddress = NumberUtils.CreateUshort(cpu.Memory[cpu.Registers.SP], cpu.Memory[cpu.Registers.SP + 1]);
trackedCallsStack.Push(returnAddress);
trackedCallsStackSymbols.Push(symbol);
UdpateIndentation();
}
if (trackedCallsStack.Any() && trackedCallsStack.Peek() == pc)
{
trackedCallsStack.Pop();
var symbol = trackedCallsStackSymbols.Pop();
UdpateIndentation();
Debug.WriteLine($"{indentation}<-- {symbol}: HL=0x{cpu.Registers.HL:X4}, DE=0x{cpu.Registers.DE:X4}, BC={cpu.Registers.BC} (0x{cpu.Registers.BC:X4}), A={cpu.Registers.A}, Cy={cpu.Registers.CF}");
}
}
private void CpuOnBeforeInstructionFetch(object sender, BeforeInstructionFetchEventArgs e)
{
if (!hookedMethods.ContainsKey(regs.PC))
{
return;
}
if (segmentNumber == null &&
(mappedRam = slotsSystem.GetSlotContents(slotsSystem.GetCurrentSlot(1)) as IMappedRam) != null &&
ExtractString(0x4000, 14) == "FileSysDriver")
{
segmentNumber = mappedRam.GetBlockInBank(1);
}
if (segmentNumber != null &&
mappedRam?.GetBlockInBank(1) == segmentNumber.Value &&
slotsSystem.GetSlotContents(slotsSystem.GetCurrentSlot(1)) == mappedRam)
{
hookedMethods[regs.PC]();
cpu.ExecuteRet();
}
}
