145 lines
3.6 KiB
C
145 lines
3.6 KiB
C
/*****************************************************************************
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** $Source: $
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**
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** $Revision: 1.12 $
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**
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** $Date: 2008-03-30 18:38:44 $
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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, Ricardo Bittencourt
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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 "romMapperArc.h"
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#include "MediaDb.h"
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#include "SlotManager.h"
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#include "DeviceManager.h"
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#include "DebugDeviceManager.h"
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#include "SaveState.h"
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#include "IoPort.h"
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#include "Language.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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int deviceHandle;
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int debugHandle;
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UInt8* romData;
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int slot;
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int sslot;
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int startPage;
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UInt8 offset;
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} Arc;
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static void destroy(Arc* rm)
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{
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ioPortUnregister(0x7f);
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slotUnregister(rm->slot, rm->sslot, rm->startPage);
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deviceManagerUnregister(rm->deviceHandle);
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debugDeviceUnregister(rm->debugHandle);
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free(rm->romData);
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free(rm);
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}
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static void saveState(Arc* rm)
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{
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SaveState* state = saveStateOpenForWrite("mapperArc");
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saveStateSet(state, "offset", rm->offset);
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saveStateClose(state);
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}
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static void loadState(Arc* rm)
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{
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SaveState* state = saveStateOpenForRead("mapperArc");
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rm->offset = (UInt8)saveStateGet(state, "offset", 0);
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saveStateClose(state);
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}
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static UInt8 readIo(Arc* rm, UInt16 ioPort)
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{
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// printf("R: %.2x\n", ((rm->offset & 0x03) == 0x03) ? 0xda : 0xff);
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return ((rm->offset & 0x03) == 0x03) ? 0xda : 0xff;
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}
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static void writeIo(Arc* rm, UInt16 ioPort, UInt8 value)
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{
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// printf("W: %.2x\n", value);
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if (value == 0x35) {
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rm->offset++;
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}
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}
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static void reset(Arc* rm)
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{
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rm->offset = 0;
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}
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static void getDebugInfo(Arc* rm, DbgDevice* dbgDevice)
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{
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DbgIoPorts* ioPorts;
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ioPorts = dbgDeviceAddIoPorts(dbgDevice, "Parallax ARC", 1);
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dbgIoPortsAddPort(ioPorts, 0, 0x7f, DBG_IO_READWRITE, readIo(rm, 0x7f));
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}
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int romMapperArcCreate(const char* filename, UInt8* romData,
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int size, int slot, int sslot, int startPage)
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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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Arc* rm;
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int pages = size / 0x2000;
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int i;
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rm = malloc(sizeof(Arc));
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rm->deviceHandle = deviceManagerRegister(ROM_ARC, &callbacks, rm);
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rm->debugHandle = debugDeviceRegister(DBGTYPE_CART, "Parallax ARC", &dbgCallbacks, rm);
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slotRegister(slot, sslot, startPage, 4, NULL, NULL, NULL, destroy, rm);
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size = (size + 0x3fff) & ~0x3fff;
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rm->romData = malloc(size);
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memcpy(rm->romData, romData, size);
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rm->slot = slot;
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rm->sslot = sslot;
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rm->startPage = startPage;
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for (i = 0; i < pages; i++) {
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slotMapPage(slot, sslot, i + startPage, rm->romData + 0x2000 * i, 1, 0);
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}
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ioPortRegister(0x7f, readIo, writeIo, rm);
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reset(rm);
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return 1;
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}
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