Akop Karapetyan
129 lines
3.4 KiB
C
129 lines
3.4 KiB
C
/*****************************************************************************
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** $Source: /cygdrive/d/Private/_SVNROOT/bluemsx/blueMSX/Src/Memory/romMapperOpcodeSlotManager.c,v $
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**
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** $Revision: 1.1 $
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**
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** $Date: 2008-11-23 20:26:12 $
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**
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** More info: http://www.bluemsx.com
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**
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** Copyright (C) 2003-2006 Daniel Vik
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**
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** This program is free software; you can redistribute it and/or modify
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** it under the terms of the GNU General Public License as published by
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** the Free Software Foundation; either version 2 of the License, or
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** (at your option) any later version.
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**
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** This program is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU General Public License for more details.
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**
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** You should have received a copy of the GNU General Public License
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** along with this program; if not, write to the Free Software
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** Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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**
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******************************************************************************
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*/
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#include "romMapperOpcodeSlotManager.h"
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#include "MediaDb.h"
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#include "DeviceManager.h"
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#include "DebugDeviceManager.h"
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#include "SlotManager.h"
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#include "SaveState.h"
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#include "AY8910.h"
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#include "Board.h"
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#include "IoPort.h"
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#include <stdlib.h>
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#include <string.h>
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#include <stdio.h>
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typedef struct {
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UInt8 slotSelect;
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int deviceHandle;
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int debugHandle;
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} RomMapperOpcodeSlotManager;
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static void slotUpdate(RomMapperOpcodeSlotManager* rm)
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{
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int i;
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for (i = 0; i < 4; i++) {
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slotMapRamPage((rm->slotSelect >> (2 * i)) & 3, 0, 4 + i);
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}
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}
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static void saveState(RomMapperOpcodeSlotManager* rm)
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{
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SaveState* state = saveStateOpenForWrite("mapperOpcodeSlotManager");
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saveStateSet(state, "slotSelect", rm->slotSelect);
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saveStateClose(state);
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}
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static void loadState(RomMapperOpcodeSlotManager* rm)
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{
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SaveState* state = saveStateOpenForRead("mapperOpcodeSlotManager");
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rm->slotSelect = (UInt8)saveStateGet(state, "slotSelect", 0);
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saveStateClose(state);
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}
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static void destroy(RomMapperOpcodeSlotManager* rm)
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{
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deviceManagerUnregister(rm->deviceHandle);
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debugDeviceUnregister(rm->debugHandle);
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ioPortUnregister(0x41);
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free(rm);
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}
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static UInt8 peek(RomMapperOpcodeSlotManager* rm, UInt16 ioPort)
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{
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return rm->slotSelect;
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}
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static UInt8 read(RomMapperOpcodeSlotManager* rm, UInt16 ioPort)
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{
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return rm->slotSelect;
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}
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static void write(RomMapperOpcodeSlotManager* rm, UInt16 ioPort, UInt8 value)
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{
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rm->slotSelect = value;
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slotUpdate(rm);
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}
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static void reset(RomMapperOpcodeSlotManager* rm)
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{
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rm->slotSelect = 0;
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slotUpdate(rm);
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}
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static void getDebugInfo(RomMapperOpcodeSlotManager* rm, DbgDevice* dbgDevice)
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{
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DbgIoPorts* ioPorts;
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ioPorts = dbgDeviceAddIoPorts(dbgDevice, "SLOTSELECT", 1);
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dbgIoPortsAddPort(ioPorts, 0, 0x41, DBG_IO_READWRITE, peek(rm, 0x41));
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}
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int romMapperOpcodeSlotManagerCreate()
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{
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DeviceCallbacks callbacks = { destroy, reset, saveState, loadState };
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DebugCallbacks dbgCallbacks = { getDebugInfo, NULL, NULL, NULL };
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RomMapperOpcodeSlotManager* rm = malloc(sizeof(RomMapperOpcodeSlotManager));
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rm->deviceHandle = deviceManagerRegister(ROM_OPCODESLOT, &callbacks, rm);
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rm->debugHandle = debugDeviceRegister(DBGTYPE_BIOS, "SLOTSELECT", &dbgCallbacks, rm);
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ioPortRegister(0x41, read, write, rm);
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reset(rm);
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return 1;
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}
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