Function CmdZeroPageAdd

source/Debugger/Debug.cpp:7876–7946

===========================================================================

//===========================================================================
Update_t CmdZeroPageAdd (int nArgs)
{
	// ZP [address]
	// ZP # address [address...]
	if (!nArgs)
	{
		return CmdZeroPageList(0);
	}

	int iArg = 1;
	int iZP = NO_6502_TARGET;

	if (nArgs > 1)
	{
		iZP = g_aArgs[1].nValue;
		if (iZP >= MAX_ZEROPAGE_POINTERS)
		{
			ConsoleDisplayPushFormat("Zero page pointer index too big.  (Max: %d)", MAX_ZEROPAGE_POINTERS - 1);
			return ConsoleUpdate();
		}

		iArg++;
	}
	
	bool bAdded = false;
	for (; iArg <= nArgs; iArg++ )
	{
		WORD nAddress = g_aArgs[iArg].nValue;

		// Make sure address is a ZP address
		if (nAddress > _6502_ZEROPAGE_END)
		{
			ConsoleDisplayPushFormat("Zero page pointer must be in the range: [00..%02X].", _6502_ZEROPAGE_END);
			return ConsoleUpdate();
		}

		if (iZP == NO_6502_TARGET)
		{
			iZP = 0;
			while ((iZP < MAX_ZEROPAGE_POINTERS) && (g_aZeroPagePointers[iZP].bSet))
			{
				iZP++;
			}
		}

		if ((iZP >= MAX_ZEROPAGE_POINTERS) && !bAdded)
		{
			ConsoleDisplayPushFormat("All zero page pointers are currently in use.  (Max: %d)", MAX_ZEROPAGE_POINTERS);
			return ConsoleUpdate();
		}
		
		if ((iZP < MAX_ZEROPAGE_POINTERS) && (g_nZeroPagePointers < MAX_ZEROPAGE_POINTERS))
		{
			g_aZeroPagePointers[iZP].bSet = true;
			g_aZeroPagePointers[iZP].bEnabled = true;
			g_aZeroPagePointers[iZP].nAddress = (BYTE) nAddress;
			bAdded = true;
			g_nZeroPagePointers++;