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disc: clarify behaviour of ReadLBA

This commit is contained in:
zeromus 2011-05-14 20:14:21 +00:00
parent 99babf743f
commit 87cd0730e6
1 changed files with 12 additions and 3 deletions
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15
BizHawk.Emulation/Disc/Disc.cs
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@ -283,10 +283,19 @@ namespace BizHawk.Disc
}
}
//main api for reading a 2352-byte LBA from a disc
public void ReadLBA(int fad, byte[] buffer, int offset)
//main api for reading a 2352-byte LBA from a disc.
//this starts at the beginning of the disc (at the lead-in)
//so add 150 to get to a FAD-address in the user data area
public void ReadLBA(int lba, byte[] buffer, int offset)
{
Sectors[fad].Sector.Read(buffer, offset);
if (lba < 150) {
//lead-in area not supported yet
//in the future it will return something to mate with the
//subchannel data which we will load or calculate from the TOC
return;
}
Sectors[lba-150].Sector.Read(buffer, offset);
}
//main api for reading the TOC from a disc