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I need help dumping a psx game
Posted: Sun Jul 19, 2009 6:40 am
by Devcon
Hi, i don't know if i'm doin something wrong or maybe the disc or my cd-drive are damaged.
I purchased the game: "Attack of The Saucerman (E) [SLES-01718]" that it's in the database marked as blue.
I dumped the data track, and the first 20 audio tracks correctly, all have the same CRCs than the database, but the last track give me different checksums each time i dump it.
My drive has a read offset of +667 and can overread into the lead-in, and the game has a write offset of -647 so i assume i can dump it correctly.
Combined read/write offset it's -647+667= +20 so i'm dumping all the audio tracks with that value, but i have no luck.
I think i'm dumping it correctly? +20 is the combined read/write value right?
Re: I need help dumping a psx game
Posted: Sun Jul 19, 2009 6:46 am
by iR0b0t
if it can't overread into lead-out there could be a problem since it has to overread into lead-out +20 with this disc & drive
you can use an over drive with smaller read offset to dump the last track
Re: I need help dumping a psx game
Posted: Sun Jul 19, 2009 7:09 am
by Devcon
Ok will try, thanks.
Re: I need help dumping a psx game
Posted: Sun Jul 19, 2009 7:13 am
by iR0b0t
I've checked this track and it should have a RIFF header in the beginning
Code: Select all
52 49 46 46 C8 4E F1 02 57 41 56 45 66 6D 74 20 RIFFÈNñ.WAVEfmt
10 00 00 00 01 00 02 00 44 AC 00 00 10 B1 02 00 ........D¬...±..
04 00 10 00 64 61 74 61 A4 4E F1 02 00 00 00 00 ....data¤Nñ.....
Re: I need help dumping a psx game
Posted: Tue Jul 21, 2009 1:16 pm
by iR0b0t
It's not a RIFF header problem, all the tracks there have a riff header and since other tracks match it can not be the reason.
And since the last track has many zero'ed data in the end there should be everything okay, dunno what the problem is.
Maybe it is better you upload your track somewhere to check the differences(?)
Re: I need help dumping a psx game
Posted: Tue Jul 21, 2009 3:25 pm
by F1ReB4LL
Even if his drive is unable to overread into leadout and there's data upto the very end, this can only result in some zeroed samples at the very end (the drive can't read them due to positive combined offset), but it shouldn't lead to different checksums every time.
Re: I need help dumping a psx game
Posted: Tue Jul 21, 2009 6:16 pm
by Sotho Tal Ker
Do the red dots in EAC light up when extracting the last track?
Re: I need help dumping a psx game
Posted: Tue Jul 21, 2009 9:27 pm
by themabus
it's a surface defect then, i guess
those might pass as 100% good on EAC,
but tracks will differ among various drives, because of different masking strategies
and in some cases they might vary even on same drive, like in this one
cleaning or polishing surface might help or extraction with IsoBuster @low speed
Re: I need help dumping a psx game
Posted: Fri Jul 24, 2009 9:10 am
by Devcon
Sorry for the delay. Yes, the red dots in EAC light up at 62% to 63% of the last track, so i think the surface is damaged, snif i have bad luck. I also tried to clean the disc, but it don't work.
At least the game don't cost me much, only 3 euros
So can anyone upload the last track somewhere so i can get that game 100% complete please?
