135 lines
4.3 KiB
C++
135 lines
4.3 KiB
C++
#include "stdafx.h"
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static BYTE Mempak[4][0x8000];
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static HANDLE hMempakFile = NULL;
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void CloseMempak (void) {
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if (hMempakFile) {
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CloseHandle(hMempakFile);
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hMempakFile = NULL;
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}
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}
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void LoadMempak (void) {
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char File[256], Directory[256];
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DWORD dwRead, count, count2;
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BYTE Initilize[] = {
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0x81,0x01,0x02,0x03, 0x04,0x05,0x06,0x07, 0x08,0x09,0x0a,0x0b, 0x0C,0x0D,0x0E,0x0F,
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0x10,0x11,0x12,0x13, 0x14,0x15,0x16,0x17, 0x18,0x19,0x1A,0x1B, 0x1C,0x1D,0x1E,0x1F,
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0xFF,0xFF,0xFF,0xFF, 0x05,0x1A,0x5F,0x13, 0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,
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0xFF,0xFF,0xFF,0xFF, 0xFF,0xFF,0xFF,0xFF, 0xFF,0xFF,0x01,0xFF, 0x66,0x25,0x99,0xCD,
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0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,
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0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,
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0xFF,0xFF,0xFF,0xFF, 0x05,0x1A,0x5F,0x13, 0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,
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0xFF,0xFF,0xFF,0xFF, 0xFF,0xFF,0xFF,0xFF, 0xFF,0xFF,0x01,0xFF, 0x66,0x25,0x99,0xCD,
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0xFF,0xFF,0xFF,0xFF, 0x05,0x1A,0x5F,0x13, 0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,
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0xFF,0xFF,0xFF,0xFF, 0xFF,0xFF,0xFF,0xFF, 0xFF,0xFF,0x01,0xFF, 0x66,0x25,0x99,0xCD,
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0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,
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0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,
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0xFF,0xFF,0xFF,0xFF, 0x05,0x1A,0x5F,0x13, 0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,
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0xFF,0xFF,0xFF,0xFF, 0xFF,0xFF,0xFF,0xFF, 0xFF,0xFF,0x01,0xFF, 0x66,0x25,0x99,0xCD,
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0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,
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0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,
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0x00,0x71,0x00,0x03, 0x00,0x03,0x00,0x03, 0x00,0x03,0x00,0x03, 0x00,0x03,0x00,0x03,
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};
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for (count = 0; count < 4; count ++) {
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for (count2 = 0; count2 < 0x8000; count2 += 2) {
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Mempak[count][count2] = 0x00;
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Mempak[count][count2 + 1] = 0x03;
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}
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memcpy(&Mempak[count][0],Initilize,sizeof(Initilize));
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}
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GetAutoSaveDir(Directory);
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sprintf(File,"%s%s.mpk",Directory,g_RomName);
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hMempakFile = CreateFile(File,GENERIC_WRITE | GENERIC_READ, FILE_SHARE_READ,NULL,OPEN_ALWAYS,
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FILE_ATTRIBUTE_NORMAL | FILE_FLAG_RANDOM_ACCESS, NULL);
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if (hMempakFile == INVALID_HANDLE_VALUE) {
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switch (GetLastError()) {
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case ERROR_PATH_NOT_FOUND:
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CreateDirectory(Directory,NULL);
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hMempakFile = CreateFile(File,GENERIC_WRITE | GENERIC_READ, FILE_SHARE_READ,
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NULL,OPEN_ALWAYS,FILE_ATTRIBUTE_NORMAL | FILE_FLAG_RANDOM_ACCESS, NULL);
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if (hMempakFile == INVALID_HANDLE_VALUE) {
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DisplayError(GS(MSG_FAIL_OPEN_MEMPAK));
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}
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return;
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break;
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default:
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DisplayError(GS(MSG_FAIL_OPEN_MEMPAK));
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return;
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}
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}
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SetFilePointer(hMempakFile,0,NULL,FILE_BEGIN);
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ReadFile(hMempakFile,Mempak,sizeof(Mempak),&dwRead,NULL);
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WriteFile(hMempakFile,Mempak,sizeof(Mempak),&dwRead,NULL);
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}
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BYTE Mempacks_CalulateCrc(BYTE * DataToCrc) {
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DWORD Count;
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DWORD XorTap;
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int Length;
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BYTE CRC = 0;
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for (Count = 0; Count < 0x21; Count++) {
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for (Length = 0x80; Length >= 1; Length >>= 1) {
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XorTap = (CRC & 0x80) ? 0x85 : 0;
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CRC <<= 1;
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if (Count == 0x20) {
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CRC &= 0xFF;
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} else {
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if ((*DataToCrc & Length) != 0) {
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CRC |= 1;
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}
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}
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CRC ^= XorTap;
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}
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DataToCrc++;
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}
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return CRC;
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}
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void ReadFromMempak(int Control, int Address, BYTE * Buffer) {
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if (Address == 0x8001) {
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memset(Buffer, 0, 0x20);
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Buffer[0x20] = Mempacks_CalulateCrc(Buffer);
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return;
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}
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Address &= 0xFFE0;
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if (Address <= 0x7FE0) {
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if (hMempakFile == NULL) {
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LoadMempak();
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}
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memcpy(Buffer, &Mempak[Control][Address], 0x20);
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} else {
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memset(Buffer, 0, 0x20);
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/* Rumble pack area */
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}
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Buffer[0x20] = Mempacks_CalulateCrc(Buffer);
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}
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void WriteToMempak(int Control, int Address, BYTE * Buffer) {
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DWORD dwWritten;
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if (Address == 0x8001) { Buffer[0x20] = Mempacks_CalulateCrc(Buffer); return; }
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Address &= 0xFFE0;
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if (Address <= 0x7FE0) {
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if (hMempakFile == NULL) {
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LoadMempak();
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}
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memcpy(&Mempak[Control][Address], Buffer, 0x20);
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SetFilePointer(hMempakFile,Control*0x8000,NULL,FILE_BEGIN);
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WriteFile(hMempakFile,&Mempak[Control][0],0x8000,&dwWritten,NULL);
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} else {
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/* Rumble pack area */
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}
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Buffer[0x20] = Mempacks_CalulateCrc(Buffer);
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} |