Redump Forum — Questions about PS1 games with 3 second pregaps,and 2 data track games

Re: Questions about PS1 games with 3 second pregaps,and 2 data track games

null@example.com (Rocknroms) — Sat, 07 Mar 2009 15:29:06 +0000

iR0b0t wrote:

Seems, you've right!
That's also the reason why I had sometimes different data in EAC and PR, but I also used always PR results, because they had same data as the original disc !

You have also to check if that is real data of garbage (example the string that was found in some SS/MCD discs).

Re: Questions about PS1 games with 3 second pregaps,and 2 data track games

null@example.com (iR0b0t) — Sat, 07 Mar 2009 15:22:22 +0000

Seems, you've right!

That's also the reason why I had sometimes different data in EAC and PR, but I also used always PR results, because they had same data as the original disc !

Re: Questions about PS1 games with 3 second pregaps,and 2 data track games

null@example.com (iR0b0t) — Sat, 07 Mar 2009 15:06:27 +0000

Rocknroms wrote:

First audio track is always padded, EAC cannot read data.

let me try it now...

Re: Questions about PS1 games with 3 second pregaps,and 2 data track games

null@example.com (Rocknroms) — Sat, 07 Mar 2009 15:05:30 +0000

iR0b0t wrote:

EAC don't pad anything, just try to set the offset wrong and you will have some data from previews track in the pregap

First audio track is always padded, EAC cannot read data.

Re: Questions about PS1 games with 3 second pregaps,and 2 data track games

null@example.com (iR0b0t) — Sat, 07 Mar 2009 15:02:27 +0000

EAC don't pad anything, just try to set the offset wrong and you will have some data from previews track in the pregap

DJoneK wrote:

I've come upon some audio tracks with the Riff header in them

that's ok, and not "a faik" AFIAK

Re: Questions about PS1 games with 3 second pregaps,and 2 data track games

null@example.com (Rocknroms) — Sat, 07 Mar 2009 14:59:33 +0000

iR0b0t wrote:

look at "South Park Rally" http://forum.redump.org/topic/3190/done … sles02690/

This is something most than common for all other systems, I talk about first audio track (only PR reports data if there's something or if you simply dump with wrong offset, EAC pad everything with 0x00) and expecially about discs with only one audio track the ones you normally pad.

EDIT: DJoneK, the same, what you found is normal.

Re: Questions about PS1 games with 3 second pregaps,and 2 data track games

null@example.com (DJoneK) — Sat, 07 Mar 2009 14:57:26 +0000

During my very interesting journey of converting p2p to redump, I've come upon some audio tracks with data in the pregap. Usually the first couple of bytes in a sector that I see so much on the data tracks. I thought they were fine since they matched, so I never said anything. Also, I've come upon some audio tracks with the Riff header in them (which AFAIK means wave format), but they also matched the database so I didn't say anything. I forgot which dumps were those though..

If its not normal, let me know so I could make a note of it from now on.

Re: Questions about PS1 games with 3 second pregaps,and 2 data track games

null@example.com (iR0b0t) — Sat, 07 Mar 2009 14:49:22 +0000

look at "South Park Rally" http://forum.redump.org/topic/3190/done … sles02690/

and also check my BIG QUESTION topic http://forum.redump.org/topic/4142/a-big-question/

Re: Questions about PS1 games with 3 second pregaps,and 2 data track games

null@example.com (Rocknroms) — Sat, 07 Mar 2009 14:42:03 +0000

There's some PSX disc dumped with data in first audio track pregap?

Re: Questions about PS1 games with 3 second pregaps,and 2 data track games

null@example.com (iR0b0t) — Sat, 07 Mar 2009 13:43:57 +0000

hehe
yes, i know, we have just to check before if there is some not 00 data, and i forgot to mention it

Re: Questions about PS1 games with 3 second pregaps,and 2 data track games

null@example.com (F1ReB4LL) — Sat, 07 Mar 2009 13:38:25 +0000

Oh My drive actually refuses to read the audio pregap as a part of the datatrack, so I don't have such a problem and kinda forgot about it Anyway, simply padding everything with zeroes isn't a very good idea, imo.

Re: Questions about PS1 games with 3 second pregaps,and 2 data track games

null@example.com (iR0b0t) — Sat, 07 Mar 2009 13:16:57 +0000

I think you forget the scrambled data, FIRE !

Re: Questions about PS1 games with 3 second pregaps,and 2 data track games

null@example.com (F1ReB4LL) — Sat, 07 Mar 2009 12:51:01 +0000

Rocknroms wrote:

2) 2 consecutive data tracks, you have to calculate real pregap first, then use "remove":
remove -size="bytes_to_move" track01.bin track02.bin
where "bytes_to_move"=bytes of pregap (352800, 529200, etc.).

You can just always use this method, 2nd audio track pregap can also contain non-zero data, I don't think it's correct just to pad it with zeroes.

Re: Questions about PS1 games with 3 second pregaps,and 2 data track games

null@example.com (Balthier) — Sat, 07 Mar 2009 05:29:11 +0000

Cool! Thanks a lot. I wasn't aware of those tools and threads, or that psxtools had other options besides just the FIX option (the readme file doesn't mention any commands other than ones that got removed). I'll have a look at that stuff n maybe I can make that ps1redumper I posted a little better.:)

Re: Questions about PS1 games with 3 second pregaps,and 2 data track games

null@example.com (Rocknroms) — Sat, 07 Mar 2009 05:21:10 +0000

If you have to dump a real disc, do as follow:

1) padding single data track with 0x00, on command promp:

psxt001z ---gen pregap.bin "file_size"

where "file_size"=bytes needed (352800, 529200, etc.), then

copy /b pregap.bin+track02.bin new_track02.bin

2) 2 consecutive data tracks, you have to calculate real pregap first, then use "remove":

remove -size="bytes_to_move" track01.bin track02.bin

where "bytes_to_move"=bytes of pregap (352800, 529200, etc.).

Instead if you have to fix an image, simply take a look at the following thread where there's everything:
http://forum.redump.org/topic/3620/p2pt … -tutorial/
http://forum.redump.org/topic/3959/dc-t … -tutorial/