> > just some comments:
> > - MAME will still support zip even if 7z support is added
> > - if the chd format is put to version 5, you most likely have to run a chdman
> > on all your chds to recompress them to the new format.
> > Regarding cmpro:
> > - of course I will add support for v5 chds but this will not include the actual
> > update step. You should use chdman for this. I will add an option which will show a
> > warning if you did not convert a found chd.
> > - cmpro already works rather fine with 7z, while reading 7z archives is internal,
> > writing is done by calling an external 7z executable. Keep in mind that 7z
> > are slower, especially if we're talking about solid archives. As soon as I find
> > and a better 7z sdk, I may include the writing part as well.
> > Currently I see a new cmpro at end of February, hopefully with the chd update and
> > definetly with the multi softwarelist support.
> I just used clrmame to build a 7z'd set of ROMs. It was quite easy and went without
> problem. All I had to do was point clrmame to my 7 zip exe file. I went from 36.2 GB
> to 29.7 GB. Not bad.
> I checked out the latest MAME source from http://git.redump.net/mame/. It works fine
> with 7z ROMs.
Which is the purpose of gain 5 GB of space when you can buy one or more cheap terabyte HDDs?