ADF-Workshop (formerly DMS-Workshop)

[Crashdisk]

Hi,
as mentioned in private, ADFW will support raw Warp (not MFM). Decompression is not ensured because like DMS, it exploits several compression algorithms that are not yet implemented. However, ADFW can identify the content.
Other exotic formats are not considered because they are marginal and XAD does the job well.
ADF Workshop is mainly used for the analysis of ADF files. Due to many internal changes, ADFW is still experimental at the moment...

[chip]

What's the difference between RAW Warp and MFM Warp ?

[Crashdisk]

Basically:
Raw = ADF
MFM = extended ADF
MFM files may contain protections or special formats.

[RoC]

Glad to see ADFW development continues behind the scenes.

That tool is great and improvements are just welcome.

[chip]

Thanks for explanation Crashdisk

I will wait for the next release of this useful tool

[ramparts]

Thank You For this wonderfull Tool!

[Pfloyd]

This looks promising.

Is it possible to detect duplicate adfs in collections?

You could check for duplicate CRC32, but it would be helpful if there was an additional CRC32 computed without the first 2 sectors (boot sectors). The boot sectors may have been overwritten by viruses, virus killers and virus protectors... This would result in a different CRC32 even if the rest of the disk image is identical.

[mai]

Originally Posted by Pfloyd

You could check for duplicate CRC32, but it would be helpful if there was an additional CRC32 computed without the first 2 sectors (boot sectors). The boot sectors may have been overwritten by viruses, virus killers and virus protectors... This would result in a different CRC32 even if the rest of the disk image is identical.

Probably you mean this feature:

CRC32 based identification :
Common disk_____*[007B7039] This file
|_Bootblock______[ECCCEC05] Last Ninja Music, The (1989)(RSI)[v Blizzard v1.0][KS1.2]

According to the databases i have loaded an unknown ADF[007B7039]
but there exists a known ADF[ECCCEC05] with different bootblock(virus infected).

[Pfloyd]

Thanks for your answer, I'll try that out.

[sTe]

Just getting my head around this tool... One thing I've noticed, which I don't know how this is best to be answered...

This example :
disk.info | 2.440|039BE706|KO|OK|OK|1993.02.04 20:33|Deleted

I haven't found an option on how to undelete the file ... which would fix my ADF file.
CRC look ok, and is highlighted green. Would there be a byte or something that could mark these sectors as not deleted?

[chip]

Just discovered that standard ADF files can be as maximum size 923648 bytes

These kind of ADFs are 82 tracks

So, the question is simple :

What happens if i "fix" these ADFs to 880 KB with ADF-Workshop ?

[BippyM]

Originally Posted by chip

Just discovered that standard ADF files can be as maximum size 923648 bytes

These kind of ADFs are 82 tracks

So, the question is simple :

What happens if i "fix" these ADFs to 880 KB with ADF-Workshop ?

You'll lose data

[mai]

Originally Posted by chip

What happens if i "fix" these ADFs to 880 KB with ADF-Workshop ?

Just try it out!
Why should there be an option, that creates something non working?

[chip]

Already tried with some ADFs

It "seems" resulting fixed ADF work in the same way

But with the conversion there are bytes missing, so i still have a doubt

[BippyM]

Originally Posted by chip

Already tried with some ADFs

It "seems" resulting fixed ADF work in the same way

But with the conversion there are bytes missing, so i still have a doubt

There's going to be missing data isn't there??

[dlfrsilver]

Originally Posted by chip

Already tried with some ADFs

It "seems" resulting fixed ADF work in the same way

But with the conversion there are bytes missing, so i still have a doubt

ADF max size is $DC000. Beyond it's garbage.

[chip]

Good to know dlfrsilver, thanks !

But then why exist ADFs of size 923648 bytes ?

I have a whole disks collection ripped in this size

[BippyM]

Originally Posted by dlfrsilver

ADF max size is $DC000. Beyond it's garbage.

That isn't true though is it?

Some disks had 82 tracks, although some drives couldn't read beyond track 79!

[mai]

Originally Posted by chip

Already tried with some ADFs

It "seems" resulting fixed ADF work in the same way

But with the conversion there are bytes missing, so i still have a doubt

Ever noticed CRC32 based identification field?

CRC32 based identification :
Special disk_____[9A32F2EA] Rock'n Roll (1991)(Rainbow Arts)[compilation 5th Anniversary]
|_Overdump______*[8BA48829] Rock'n Roll (1991)(Rainbow Arts)[o][compilation 5th Anniversary]

Rock'n Roll (1991)(Rainbow Arts)[o][compilation 5th Anniversary]

If you cut off sectors beyond $DC000
the result is :

Rock'n Roll (1991)(Rainbow Arts)[compilation 5th Anniversary]

[chip]

Interesting mai, thanks

So, the "oversized" ADF is actually the same as the "fixed" 880KB ADF

Those bytes can be cut off without no problems at all then

Perfect