pepsidrinker wrote:Hey Vigi, does this work with just audio cds? When I get my plextors I want to retry dumping the Jaguar games and it would also be nice to dump properly video game sound tracks and such.
- Works on all discs with data tracks (no audio tracks needed)
- All data track sectors can be used to detect (in the old method it was only possible to use the first track02 pregap sector for this)
So you can't use it soundtracks if they don't have a data track. There has to be a data track for it to work.
Here the sync header start at row 63
that would be 63*4 = 252
In the sync header (00FFFFFFFFFFFFFFFFFFFF00018202) the data is read from sector 2 , so this would be
252 - (588*2) = -924 and the drive offset is +30, so the disc would be -954??
Use 'View Sectors' to go to the first sector of the data track, then enable the 'Apply YB scrambling' box. This will scramble the header (the sync/header is now the same as the px_d8 output). Then you can determine the offset in sectors by looking for the sector with the same sync/header in cdreader.
I think the write offset is just +222 (and it's a common IBM PC offset)
The sector in CDReader with the same sync/header that in px_d8 is sector 2.. look at this screenshoot, what that means, did I my calculations wrong?
EDIT
I forgot to mention that this game is fact a IBM PC game, mixed disc 1 Data track and 2 audio tracks.. and that using old method ISOBuster doesn't show me garbage data on the beginning of the pregap for the first audio track on any of my drives, just zeros.
Last edited by pnkiller78 on Sat Jan 26, 2008 1:57 pm, edited 1 time in total.
pnkiller78 wrote:The sector in CDReader with the same sync/header that in px_d8 is sector 2.. look at this screenshoot, what that means, did I my calculations wrong?
edit: I just remember something.. older plextor drives have a bug where the normal read mode outputs a different sector offset than d8 mode.. I'm pretty sure that +222 is the correct write offset after all.. but if possible try confirming the offset using the old method..
I hope this doesn't affect any other users and any current dumps in the database..
pepsidrinker wrote:Hey Vigi, does this work with just audio cds? When I get my plextors I want to retry dumping the Jaguar games and it would also be nice to dump properly video game sound tracks and such.
- Works on all discs with data tracks (no audio tracks needed)
- All data track sectors can be used to detect (in the old method it was only possible to use the first track02 pregap sector for this)
So you can't use it soundtracks if they don't have a data track. There has to be a data track for it to work.
Is not being able to find the correct offset for audio only a technical limitation or a software tool limitation? I mean if there is no possible way to find the offset so it can be corrected I won't worry about it but if it's just because we don't have a tool capable to do it, I wouldn't mind taking the time to research and that to find a way.
pepsidrinker wrote:Hey Vigi, does this work with just audio cds? When I get my plextors I want to retry dumping the Jaguar games and it would also be nice to dump properly video game sound tracks and such.
- Works on all discs with data tracks (no audio tracks needed)
- All data track sectors can be used to detect (in the old method it was only possible to use the first track02 pregap sector for this)
So you can't use it soundtracks if they don't have a data track. There has to be a data track for it to work.
Is not being able to find the correct offset for audio only a technical limitation or a software tool limitation? I mean if there is no possible way to find the offset so it can be corrected I won't worry about it but if it's just because we don't have a tool capable to do it, I wouldn't mind taking the time to research and that to find a way.
it's a technical limitation.. it will never be possible
No, they made it all in audio so they can store more on the cd or something.
Jaguar CD games could include as much as 790MB of data, considerably more than conventional CD-ROMs. The designers chose to ignore established CD-ROM formats and instead created their own based on the audio CD format. While allowing for dramatically more storage on the disc and foiling casual piracy, the format only provided limited error correction. --- http://en.wikipedia.org/wiki/Atari_Jaguar_CD
