When I do a rebuild, it matches all CHD files but skips them, even if I am missing the CHD file. If I copy the CHD to the rom directory manually and do a scan, it will validate and report it as not missing.

What am I doing wrong that is causing CLRMAMEPro to skip all CHD files?

Simple answer: The rebuilder doesn't support chd files.

Mainly because the rebuilder is crc32+size (and after that sha1/md5) based and there is no crc32 and size information for chds in the database. The database only holds sha1/md5 values for the decompressed data. It's on my todo list to support chds in the rebuilder, but don't wait for it.


Roman Scherzer

OK, not a big deal. So when I add the CHD's I should just manually add them, and then run the scanner.

Question: Does the scanner verify the CHD or does it just check that it exists?

Thanks for the (fast) support!

> Simple answer: The rebuilder doesn't support chd files.
>
> Mainly because the rebuilder is crc32+size (and after that sha1/md5) based and
> there is no crc32 and size information for chds in the database. The database
> only holds sha1/md5 values for the decompressed data. It's on my todo list to
> support chds in the rebuilder, but don't wait for it.
>
>
> Roman Scherzer
>

> OK, not a big deal. So when I add the CHD's I should just manually add them,
> and then run the scanner.


You only need to copy it (no matter what the name is) to a rompath root folder. Cmpro will do the rest (set correct name and place) for you.



> Question: Does the scanner verify the CHD or does it just check that it exists?

The check/fix options "missing", "name", "case", "unneeded" and "checksums" work with the Scanner "CHD" setting. So it does a lot more than simply checking if it exists. You can even let cmpro decompress and check it (like chdman -verify) (See Checksum options).


Roman Scherzer

> > OK, not a big deal. So when I add the CHD's I should just manually add them,
> > and then run the scanner.
Awesome. Thanks a lot for bearing with me on this one. I hadn't used my mame machine in over a year and I apparently forgot about this stuff!

>
>
> You only need to copy it (no matter what the name is) to a rompath root folder.
> Cmpro will do the rest (set correct name and place) for you.
>
>
>
> > Question: Does the scanner verify the CHD or does it just check that it
> exists?
>
> The check/fix options "missing", "name", "case", "unneeded" and "checksums" work
> with the Scanner "CHD" setting. So it does a lot more than simply checking if it
> exists. You can even let cmpro decompress and check it (like chdman -verify)
> (See Checksum options).
>
>
> Roman Scherzer
>