//---------------------------------------------------------------------------------
void readUserSettings() {
//---------------------------------------------------------------------------------
PERSONAL_DATA slot1;
PERSONAL_DATA slot2;
short slot1count, slot2count;
short slot1CRC, slot2CRC;
uint32 userSettingsBase;
readFirmware( 0x20, &userSettingsBase,2);
uint32 slot1Address = userSettingsBase * 8;
uint32 slot2Address = userSettingsBase * 8 + 0x100;
readFirmware( slot1Address , &slot1, sizeof(PERSONAL_DATA));
readFirmware( slot2Address , &slot2, sizeof(PERSONAL_DATA));
readFirmware( slot1Address + 0x70, &slot1count, 2);
readFirmware( slot2Address + 0x70, &slot2count, 2);
readFirmware( slot1Address + 0x72, &slot1CRC, 2);
readFirmware( slot2Address + 0x72, &slot2CRC, 2);
// default to slot 1 user Settings
void *currentSettings = &slot1;
short calc1CRC = swiCRC16( 0xffff, &slot1, sizeof(PERSONAL_DATA));
short calc2CRC = swiCRC16( 0xffff, &slot2, sizeof(PERSONAL_DATA));
// bail out if neither slot is valid
if ( calc1CRC != slot1CRC && calc2CRC != slot2CRC) return;
// if both slots are valid pick the most recent
if ( calc1CRC == slot1CRC && calc2CRC == slot2CRC ) {
currentSettings = (slot2count == (( slot1count + 1 ) & 0x7f) ? &slot2 : &slot1);
} else {
if ( calc2CRC == slot2CRC )
currentSettings = &slot2;
}
memcpy ( PersonalData, currentSettings, sizeof(PERSONAL_DATA));
}
void NitroFile::fixHeaderChecksum()
{
if(!cached) return;
u16 crc = swiCRC16(0, cachedContents, 0x15E);
setUshortAt(0x15E, crc);
}
