115 lines
3.1 KiB
C++
115 lines
3.1 KiB
C++
#include "stdafx.h"
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CEeprom::CEeprom (bool ReadOnly):
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m_ReadOnly(ReadOnly),
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m_hFile(NULL)
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{
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memset(m_EEPROM,0,sizeof(m_EEPROM));
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//LoadEeprom();
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}
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CEeprom::~CEeprom (void) {
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if (m_hFile) {
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CloseHandle(m_hFile);
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m_hFile = NULL;
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}
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}
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void CEeprom::EepromCommand ( BYTE * Command) {
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if (g_SaveUsing == SaveChip_Auto) { g_SaveUsing = SaveChip_Eeprom_4K; }
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switch (Command[2]) {
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case 0: // check
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if (g_SaveUsing != SaveChip_Eeprom_4K && g_SaveUsing != SaveChip_Eeprom_16K) {
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Command[1] |= 0x80;
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break;
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}
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if (Command[1] != 3) {
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Command[1] |= 0x40;
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if ((Command[1] & 3) > 0) { Command[3] = 0x00; }
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if (g_SaveUsing == SaveChip_Eeprom_4K) {
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if ((Command[1] & 3) > 1) { Command[4] = 0x80; }
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} else {
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if ((Command[1] & 3) > 1) { Command[4] = 0xC0; }
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}
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if ((Command[1] & 3) > 2) { Command[5] = 0x00; }
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} else {
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Command[3] = 0x00;
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Command[4] = g_SaveUsing == SaveChip_Eeprom_4K?0x80:0xC0;
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Command[5] = 0x00;
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}
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break;
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case 4: // Read from Eeprom
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#ifndef EXTERNAL_RELEASE
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if (Command[0] != 2) { DisplayError("What am I meant to do with this Eeprom Command"); }
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if (Command[1] != 8) { DisplayError("What am I meant to do with this Eeprom Command"); }
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#endif
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ReadFrom(&Command[4],Command[3]);
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break;
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case 5:
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#ifndef EXTERNAL_RELEASE
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if (Command[0] != 10) { DisplayError("What am I meant to do with this Eeprom Command"); }
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if (Command[1] != 1) { DisplayError("What am I meant to do with this Eeprom Command"); }
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#endif
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WriteTo(&Command[4],Command[3]);
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break;
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default:
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if (_Settings->LoadDword(Debugger_ShowPifErrors)) { DisplayError("Unknown EepromCommand %d",Command[2]); }
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}
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}
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void CEeprom::LoadEeprom (void) {
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CPath FileName;
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DWORD dwRead;
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memset(m_EEPROM,0,sizeof(m_EEPROM));
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FileName.SetDriveDirectory( _Settings->LoadString(Directory_NativeSave).c_str());
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FileName.SetName(_Settings->LoadString(Game_GameName).c_str());
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FileName.SetExtension("eep");
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if (!FileName.DirectoryExists())
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{
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FileName.CreateDirectory();
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}
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m_hFile = CreateFile(FileName,m_ReadOnly ? GENERIC_READ : GENERIC_WRITE | GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE,NULL,OPEN_ALWAYS,
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FILE_ATTRIBUTE_NORMAL | FILE_FLAG_RANDOM_ACCESS, NULL);
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if (m_hFile == INVALID_HANDLE_VALUE)
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{
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WriteTraceF(TraceError,"CEeprom::LoadEeprom: Failed to open (%s), ReadOnly = %d, LastError = %X",(LPCTSTR)FileName, m_ReadOnly, GetLastError());
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DisplayError(GS(MSG_FAIL_OPEN_EEPROM));
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return;
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}
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SetFilePointer(m_hFile,0,NULL,FILE_BEGIN);
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ReadFile(m_hFile,m_EEPROM,sizeof(m_EEPROM),&dwRead,NULL);
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}
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void CEeprom::ReadFrom(BYTE * Buffer, int line) {
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int i;
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if (m_hFile == NULL)
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{
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LoadEeprom();
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}
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for(i=0; i < 8; i++)
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{
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Buffer[i] = m_EEPROM[line*8+i];
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}
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}
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void CEeprom::WriteTo(BYTE * Buffer, int line) {
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DWORD dwWritten;
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int i;
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if (m_hFile == NULL)
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{
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LoadEeprom();
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}
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for(i=0;i<8;i++) { m_EEPROM[line*8+i]=Buffer[i]; }
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SetFilePointer(m_hFile,line*8,NULL,FILE_BEGIN);
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WriteFile( m_hFile,Buffer,8,&dwWritten,NULL );
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FlushFileBuffers(m_hFile);
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}
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