DiscImageCreator

[F1ReB4LL]

I mean, you can swap the CD with some Audio CD (like in the GD mode), then you read all the sectors and descramble them. This way, many non-d8 NEC, Optiarc, etc. drives could be supported. Could be done as a separate "swapcd" mode

[sarami]

I see, but a problem exists. It is that the swap disc can't use TOC.

_disc.txt of gd command

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========== TOC ==========
     Audio Track  1, LBA        0 -   549150, Length   549151
                                              Total    549151
This is the TOC of audio trap disc

dic can't recognize how many tracks and sectors exist in actual disc. Of course, if uses sub-channel, dic can recognize these and create TOC artificially.
But if random error of track number exists in sub-channel, especially in the boundary of the track, it's difficult to judge which track number is correct.
That is to say, the result of dumping could be instability.

many non-d8 NEC, Optiarc, etc. drives could be supported.

Btw, can other tools (e.g. CDTools) use the swap disc by these drives and dump the scrambled image?
If takes out the swap disc using a pin and inserts the target disc and pushes back the tray, some drives read the target disc, not the swap disc.

[F1ReB4LL]

I see, but a problem exists. It is that the swap disc can't use TOC.

Of course But it's not a problem.

Solution 1: User inserts disc normally, DIC reads the TOC and leadout (to know the image length), then ejects it and asks to do the swapping (like, "insert the trap audio disc and press any key" => "swap the disc and press any key").

Solution 2: User runs DIC after swapping, DIC reads data and subchannel into .scr + .sub, then ejects the tray, then inserts the tray, then reads the TOC and leadout, then cuts the image to tracks and does the descrambling. Or you can ask the leadout value via .exe parameter (to know how many sectors to read into image) and read only TOC after ejecting/inserting the tray.

[F1ReB4LL]

Still no idea why does cherokeelzzS get weird DIC dumps with certain discs? Other tools don't have any problems.

[sarami]

Solution 2

Added this, but still buggy, I think.

How to use

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1. insert the audio trap disc to a supported drive.
2. run (stop spinning disc) -> DiscImageCreator.exe stop [DriveLetter]
3. use a pin to press the escape eject button, so the tray will eject (or remove the drive cover).
4. insert the disc and run -> DiscImageCreator.exe close [DriveLetter] or gently push the tray back (or put the drive cover back on).
5. run (start dumping scrambled img) -> DiscImageCreator.exe swap [DriveLetter] foo.bin [DriveSpeed(0-72)]
6. when dumping finished, the drive tray open automatically.
7. The drive tray close automatically after 10000 msec.
8. Read TOC and img is descrambled automatically.

get weird DIC dumps

Also added this in cd command.
/viewtopic.php?p=24549#p24549

[usurper]

Sarami, how do you have dumped this disc?
Isnt that a disc with those nasty read errors?

[F1ReB4LL]

Added this, but still buggy, I think.

Works almost fine for me. The dump is correct, but the cue is missing the CATALOG entry (the drive itself reads the subchannels correctly).

Also, the image sizes (and the checksums) of the .scm and .img files are incorrect (too small). Split tracks are correct.

And why doesn't it show any progress (which sector is being read) during the dumping process?

https://redump.info/disc/32569/ -- this disc was used.

[sarami]

Some fixed.

Isnt that a disc with those nasty read errors?

There aren't intentional c2 errors and edc/ecc errors.

[user7]

Did proper support ever get added for the GameShark Pro update CDs? https://redump.info/discs/system/psxgs/

Where did we leave off on that? One of our member has a dozen waiting to dump.

[F1ReB4LL]

We need to decide, how to detect the offset on them. But the 'magic' bytes in the first track should be located at the same address for all the dumps.