/* -*- mode: C++; tab-width: 4 -*- */
/* ===================================================================== *\
	Copyright (c) 2000-2001 Palm, Inc. or its subsidiaries.
	All rights reserved.

	This file is part of the Palm OS Emulator.

	This program is free software; you can redistribute it and/or modify
	it under the terms of the GNU General Public License as published by
	the Free Software Foundation; either version 2 of the License, or
	(at your option) any later version.
\* ===================================================================== */

#include "EmCommon.h"
#include "EmRegsVZPalmM505.h"
#include "EmRegsVZPrv.h"

#include "EmBankRegs.h"			// EmBankRegs::DisableSubBank
#include "EmRegsSED1376.h"		// sed1376RegsAddr


// ---------------------------------------------------------------------------
//		¥ EmRegsVZPalmM505::EmRegsVZPalmM505
// ---------------------------------------------------------------------------

EmRegsVZPalmM505::EmRegsVZPalmM505 (void) :
	EmRegsVZPalmM500 ()
{
}


// ---------------------------------------------------------------------------
//		¥ EmRegsVZPalmM505::~EmRegsVZPalmM505
// ---------------------------------------------------------------------------

EmRegsVZPalmM505::~EmRegsVZPalmM505 (void)
{
}


// ---------------------------------------------------------------------------
//		¥ EmRegsVZPalmM505::SetSubBankHandlers
// ---------------------------------------------------------------------------

void EmRegsVZPalmM505::SetSubBankHandlers (void)
{
	// Install base handlers.

	EmRegsVZ::SetSubBankHandlers ();

	// Now add standard/specialized handers for the defined registers.

	this->SetHandler ((ReadFunction) &EmRegsVZPalmM505::StdRead,
		(WriteFunction) &EmRegsVZPalmM505::portFSelectWrite,
		addressof (portFSelect), sizeof (f68VZ328Regs.portFSelect));
}


// ---------------------------------------------------------------------------
//		¥ EmRegsVZ::portFSelectWrite
// ---------------------------------------------------------------------------

void EmRegsVZPalmM505::portFSelectWrite (emuptr address, int size, uint32 value)
{
	uint8	oldPortFSelect = READ_REGISTER (portFSelect);

	// Do a standard update of the register.

	EmRegsVZ::StdWrite (address, size, value);

	uint8	portFSelect = READ_REGISTER (portFSelect);

#define	hwrVZPortFBusClock				0x04		// (P) Bus Clock

	if (((portFSelect ^ oldPortFSelect) & hwrVZPortFBusClock) != 0)
	{
		if ((portFSelect & hwrVZPortFBusClock) != 0)
		{
			EmBankRegs::DisableSubBank (sed1376RegsAddr);
			EmBankRegs::DisableSubBank (sed1376VideoMemStart);
		}
		else
		{
			EmBankRegs::EnableSubBank (sed1376RegsAddr);
			EmBankRegs::EnableSubBank (sed1376VideoMemStart);
		}
	}
}


// ---------------------------------------------------------------------------
//		¥ EmRegsVZPalmM505::GetLCDScreenOn
// ---------------------------------------------------------------------------

Bool EmRegsVZPalmM505::GetLCDScreenOn (void)
{
	// Override the Dragonball version and let the SED 1376 handle it.

	return EmHALHandler::GetLCDScreenOn ();
}


// ---------------------------------------------------------------------------
//		¥ EmRegsVZPalmM505::GetLCDBacklightOn
// ---------------------------------------------------------------------------

Bool EmRegsVZPalmM505::GetLCDBacklightOn (void)
{
	// Override the Dragonball version and let the SED 1376 handle it.

	return EmHALHandler::GetLCDBacklightOn ();
}


// ---------------------------------------------------------------------------
//		¥ EmRegsVZPalmM505::GetLCDHasFrame
// ---------------------------------------------------------------------------

Bool EmRegsVZPalmM505::GetLCDHasFrame (void)
{
	// Override the Dragonball version and let the SED 1376 handle it.

	return EmHALHandler::GetLCDHasFrame ();
}


// ---------------------------------------------------------------------------
//		¥ EmRegsVZPalmM505::GetLCDBeginEnd
// ---------------------------------------------------------------------------

void EmRegsVZPalmM505::GetLCDBeginEnd (emuptr& begin, emuptr& end)
{
	// Override the Dragonball version and let the SED 1376 handle it.

	EmHALHandler::GetLCDBeginEnd (begin, end);
}


// ---------------------------------------------------------------------------
//		¥ EmRegsVZPalmM505::GetLCDScanlines
// ---------------------------------------------------------------------------

void EmRegsVZPalmM505::GetLCDScanlines (EmScreenUpdateInfo& info)
{
	// Override the Dragonball version and let the SED 1376 handle it.

	EmHALHandler::GetLCDScanlines (info);
}