Akop Karapetyan
147 lines
3.9 KiB
C
Executable File
147 lines
3.9 KiB
C
Executable File
/*****************************************************************************
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** $Source: /cygdrive/d/Private/_SVNROOT/bluemsx/blueMSX/Src/Memory/ramNormal.c,v $
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**
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** $Revision: 1.14 $
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**
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** $Date: 2008-03-30 18:38:42 $
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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 "ramNormal.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 "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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int slot;
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int sslot;
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int startPage;
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int pages;
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UInt8 ramData[0x10000];
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} RamNormal;
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static void saveState(RamNormal* rm)
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{
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SaveState* state = saveStateOpenForWrite("mapperNormalRam");
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saveStateSet(state, "pages", rm->pages);
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saveStateSetBuffer(state, "ramData", rm->ramData, rm->pages * 0x2000);
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saveStateClose(state);
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}
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static void loadState(RamNormal* rm)
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{
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SaveState* state = saveStateOpenForRead("mapperNormalRam");
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int i;
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rm->pages = saveStateGet(state, "pages", 0);
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saveStateGetBuffer(state, "ramData", rm->ramData, rm->pages * 0x2000);
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saveStateClose(state);
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for (i = 0; i < rm->pages; i++) {
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// slotMapPage(rm->slot, rm->sslot, i + rm->startPage, rm->ramData + 0x2000 * i, 1, 1);
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}
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}
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static void destroy(RamNormal* rm)
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{
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debugDeviceUnregister(rm->debugHandle);
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slotUnregister(rm->slot, rm->sslot, 0);
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deviceManagerUnregister(rm->deviceHandle);
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free(rm);
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}
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static void getDebugInfo(RamNormal* rm, DbgDevice* dbgDevice)
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{
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dbgDeviceAddMemoryBlock(dbgDevice, langDbgMemRamNormal(), 0, 0, rm->pages * 0x2000, rm->ramData);
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}
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static int dbgWriteMemory(RamNormal* rm, char* name, void* data, int start, int size)
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{
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if (strcmp(name, "Normal") || start + size > rm->pages * 0x2000) {
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return 0;
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}
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memcpy(rm->ramData + start, data, size);
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return 1;
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}
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int ramNormalCreate(int size, int slot, int sslot, int startPage, UInt8** ramPtr, UInt32* ramSize)
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{
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DeviceCallbacks callbacks = { destroy, NULL, saveState, loadState };
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DebugCallbacks dbgCallbacks = { getDebugInfo, dbgWriteMemory, NULL, NULL };
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RamNormal* rm;
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int pages = size / 0x2000;
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int i;
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if (size > 0x10000 || (size & 0x1fff)) {
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return 0;
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}
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// Start page must be zero (only full slot allowed)
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if (startPage + pages > 8) {
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return 0;
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}
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rm = malloc(sizeof(RamNormal));
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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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rm->pages = pages;
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memset(rm->ramData, 0xff, sizeof(rm->ramData));
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rm->debugHandle = debugDeviceRegister(DBGTYPE_RAM, langDbgDevRam(), &dbgCallbacks, rm);
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for (i = 0; i < pages; i++) {
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slotMapPage(slot, sslot, i + startPage, rm->ramData + 0x2000 * i, 1, 1);
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}
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rm->deviceHandle = deviceManagerRegister(RAM_NORMAL, &callbacks, rm);
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slotRegister(slot, sslot, startPage, pages, NULL, NULL, NULL, destroy, rm);
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if (ramPtr != NULL) {
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*ramPtr = rm->ramData;
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}
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if (ramSize != NULL) {
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*ramSize = pages * 0x2000;
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}
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return 1;
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}
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