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disc - fix some disc loading bugs

This commit is contained in:
zeromus 2014-12-21 23:32:39 +00:00
parent 78ea103114
commit cad572262a
2 changed files with 15 additions and 4 deletions
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17
BizHawk.Emulation.DiscSystem/Disc.cs
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@ -261,6 +261,10 @@ FILE ""xarp.barp.marp.farp"" BINARY
int aba = 0;
int dpIndex = 0;
//TODO - from mednafen (on PC-FX chip chan kick)
//If we're more than 2 seconds(150 sectors) from the real "start" of the track/INDEX 01, and the track is a data track,
//and the preceding track is an audio track, encode it as audio(by taking the SubQ control field from the preceding
//NOTE: discs may have subcode which is nonsense or possibly not recoverable from a sensible disc structure.
//but this function does what it says.
@ -272,18 +276,23 @@ FILE ""xarp.barp.marp.farp"" BINARY
{
if (dpIndex < Structure.Points.Count - 1)
{
if (aba >= Structure.Points[dpIndex + 1].ABA)
while (aba >= Structure.Points[dpIndex + 1].ABA)
{
dpIndex++;
}
}
var dp = Structure.Points[dpIndex];
if (aba == 4903 + 150)
{
int zzz = 9;
}
var se = Sectors[aba];
EControlQ control = dp.Track.Control;
bool pause = true;
if (dp.Num != 0)
if (dp.Num != 0) //TODO - shouldnt this be IndexNum?
pause = false;
if ((dp.Track.Control & EControlQ.DataUninterrupted)!=0)
pause = false;
@ -294,8 +303,8 @@ FILE ""xarp.barp.marp.farp"" BINARY
SubchannelQ sq = new SubchannelQ();
sq.q_status = SubchannelQ.ComputeStatus(adr, control);
sq.q_tno = (byte)dp.TrackNum;
sq.q_index = (byte)dp.IndexNum;
sq.q_tno = BCD2.FromDecimal(dp.TrackNum).BCDValue;
sq.q_index = BCD2.FromDecimal(dp.IndexNum).BCDValue;
int track_relative_aba = aba - dp.Track.Indexes[1].aba;
track_relative_aba = Math.Abs(track_relative_aba);

2
BizHawk.Emulation.DiscSystem/Subcode.cs
View File

@ -134,12 +134,14 @@ namespace BizHawk.Emulation.DiscSystem
{
/// <summary>
/// ADR and CONTROL
/// TODO - make BCD2?
/// </summary>
public byte q_status;
/// <summary>
/// normal track: BCD indications of the current track number
/// leadin track: should be 0
/// TODO - make BCD2?
/// </summary>
public byte q_tno;