254 lines
7.2 KiB
C
Executable File
254 lines
7.2 KiB
C
Executable File
/*****************************************************************************
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** $Source: /cygdrive/d/Private/_SVNROOT/bluemsx/blueMSX/Src/Memory/romMapperNoWind.c,v $
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**
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** $Revision: 1.16 $
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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
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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 "romMapperNoWind.h"
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#include "AmdFlash.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 "Board.h"
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#include "SaveState.h"
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#include "sramLoader.h"
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#include <stdlib.h>
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#include <string.h>
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#ifdef USE_NOWIND_DLL
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#include "Disk.h"
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#include "Properties.h"
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#include <windows.h>
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typedef void (*Nowind_DebugCb)(const char*);
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typedef void (__cdecl *NoWind_Init)(void);
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typedef void (__cdecl *NoWind_StartUp)(void);
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typedef void (__cdecl *NoWind_Cleanup)(void);
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typedef void (__cdecl *NoWind_SetImage)(int, const char*);
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typedef void (__cdecl *NoWind_Write)(unsigned char);
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typedef unsigned char (__cdecl *NoWind_Read)(void);
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typedef void (__cdecl *NoWind_SetDebugCb)(Nowind_DebugCb);
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static NoWind_Init nowindusb_init = NULL;
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static NoWind_StartUp nowindusb_startup = NULL;
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static NoWind_Cleanup nowindusb_cleanup = NULL;
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static NoWind_SetImage nowindusb_set_image = NULL;
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static NoWind_Write nowindusb_write = NULL;
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static NoWind_Read nowindusb_read = NULL;
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static NoWind_SetDebugCb nowindusb_set_debug_callback = NULL;
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static HINSTANCE hLib = NULL;
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void nowindLoadDll()
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{
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// Load DLL.
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hLib = LoadLibrary("libnowindusbms.dll");
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if (!hLib) {
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printf("Failed to load: libnowindusbms.dll\n");
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return;
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}
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nowindusb_init = (NoWind_Init) GetProcAddress(hLib, "nowindusb_init");
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nowindusb_startup = (NoWind_StartUp) GetProcAddress(hLib, "nowindusb_startup");
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nowindusb_cleanup = (NoWind_Cleanup) GetProcAddress(hLib, "nowindusb_cleanup");
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nowindusb_set_image = (NoWind_SetImage)GetProcAddress(hLib, "nowindusb_set_image");
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nowindusb_write = (NoWind_Write) GetProcAddress(hLib, "nowindusb_write");
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nowindusb_read = (NoWind_Read) GetProcAddress(hLib, "nowindusb_read");
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nowindusb_set_debug_callback = (NoWind_SetDebugCb) GetProcAddress(hLib, "nowindusb_set_debug_callback");
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}
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void nowindUnloadDll()
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{
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nowindusb_init = NULL;
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nowindusb_startup = NULL;
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nowindusb_cleanup = NULL;
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nowindusb_set_image = NULL;
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nowindusb_write = NULL;
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nowindusb_read = NULL;
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if (hLib != NULL) {
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FreeLibrary(hLib);
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hLib = NULL;
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}
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}
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static void debugCb(const char* message)
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{
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printf(message);
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}
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#endif
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typedef struct {
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int deviceHandle;
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AmdFlash* amdFlash;
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int slot;
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int sslot;
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int startPage;
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UInt8 romMapper;
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UInt8* flashPage;
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} RomMapperNoWind;
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static void updateMapper(RomMapperNoWind* rm, UInt8 page)
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{
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rm->romMapper = page & 0x1f;
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rm->flashPage = amdFlashGetPage(rm->amdFlash, rm->romMapper * 0x4000);
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slotMapPage(rm->slot, rm->sslot, rm->startPage + 0, NULL, 0, 0);
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slotMapPage(rm->slot, rm->sslot, rm->startPage + 1, NULL, 0, 0);
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slotMapPage(rm->slot, rm->sslot, rm->startPage + 2, rm->flashPage, 1, 0);
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slotMapPage(rm->slot, rm->sslot, rm->startPage + 3, rm->flashPage + 0x2000, 1, 0);
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slotMapPage(rm->slot, rm->sslot, rm->startPage + 4, NULL, 0, 0);
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slotMapPage(rm->slot, rm->sslot, rm->startPage + 5, rm->flashPage + 0x2000, 1, 0);
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}
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static void saveState(RomMapperNoWind* rm)
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{
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SaveState* state = saveStateOpenForWrite("mapperDumas");
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saveStateSet(state, "romMapper", rm->romMapper);
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saveStateClose(state);
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amdFlashSaveState(rm->amdFlash);
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}
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static void loadState(RomMapperNoWind* rm)
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{
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SaveState* state = saveStateOpenForRead("mapperDumas");
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rm->romMapper = (UInt8)saveStateGet(state, "romMapper", 0);
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saveStateClose(state);
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amdFlashLoadState(rm->amdFlash);
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updateMapper(rm, rm->romMapper);
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}
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static void destroy(RomMapperNoWind* rm)
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{
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amdFlashDestroy(rm->amdFlash);
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#ifdef USE_NOWIND_DLL
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if (nowindusb_cleanup) nowindusb_cleanup();
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nowindUnloadDll();
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#endif
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slotUnregister(rm->slot, rm->sslot, rm->startPage);
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deviceManagerUnregister(rm->deviceHandle);
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free(rm);
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}
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static void reset(RomMapperNoWind* rm)
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{
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amdFlashReset(rm->amdFlash);
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updateMapper(rm, 0);
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}
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static UInt8 read(RomMapperNoWind* rm, UInt16 address)
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{
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if ((address >= 0x2000 && address < 0x4000) ||
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(address >= 0x8000 && address < 0xa000))
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{
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#ifdef USE_NOWIND_DLL
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if (nowindusb_read) {
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UInt8 value = nowindusb_read();
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return value;
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}
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#endif
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}
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return 0xff;
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}
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static UInt8 peek(RomMapperNoWind* rm, UInt16 address)
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{
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return 0xff;
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}
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static void write(RomMapperNoWind* rm, UInt16 address, UInt8 value)
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{
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if (address < 0x4000) {
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amdFlashWrite(rm->amdFlash, address + 0x4000 * rm->romMapper, value);
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return;
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}
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if ((address >= 0x4000 && address < 0x6000) ||
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(address >= 0x8000 && address < 0xa000))
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{
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#ifdef USE_NOWIND_DLL
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if (nowindusb_write) nowindusb_write(value);
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#endif
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return;
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}
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if ((address >= 0x6000 && address < 0x8000) ||
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(address >= 0xa000 && address < 0xc000))
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{
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// FIXME: Is the page selected based on address or data lines?
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updateMapper(rm, value & 0x1f);
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}
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}
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int romMapperNoWindCreate(int driveId, 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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RomMapperNoWind* rm;
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rm = malloc(sizeof(RomMapperNoWind));
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rm->deviceHandle = deviceManagerRegister(ROM_NOWIND, &callbacks, rm);
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slotRegister(slot, sslot, startPage, 6, read, peek, write, destroy, rm);
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if (filename == NULL) {
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filename = "nowind.rom";
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}
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rm->amdFlash = amdFlashCreate(AMD_TYPE_1, 0x80000, 0x10000, 0, romData, size, sramCreateFilenameWithSuffix(filename, "", ".rom"), 0);
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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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#ifdef USE_NOWIND_DLL
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nowindLoadDll();
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if (nowindusb_init) nowindusb_init();
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if (nowindusb_startup) nowindusb_startup();
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if (nowindusb_set_image) nowindusb_set_image(driveId, propGetGlobalProperties()->media.disks[
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diskGetUsbDriveId(driveId, 0)].fileName);
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if (nowindusb_set_debug_callback) nowindusb_set_debug_callback(debugCb);
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#endif
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reset(rm);
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return 1;
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}
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