MAMEWorld Forums - Programming - Re: Adding new versions of games to drivers

> > I've noticed that in my original hangon.zip, the filenames don't match what's in
> the
> > source, yet the zip still works. I presume the driver reads the CRC/SHA1 code
> rather
> > than the actual filename, or am I way off?
> > Also, is the CRC/SHA1 obtained when the files are zipped or is this calcualated in
> a
> > different way?
>
> Yes, MAME will identify ROMs by their hashes if the names don't match. CRC32 is part
> of the ZIP standard; any program that manipulates ZIP files should be able to tell
> you the CRC32 hash of a file. SHA1 hashes can be calculated using GNU sha1sum--Google
> "sha1sum.exe" and you should find a link to a Windows binary in the first page of
> results.
>
> > Would it just be a matter of dropping in the appropriate rom names and CRC's into
> the
> > driver or could there be more to it than this?
> > The two hex numbers after the rom name in the driver, I know what the second number
> > is (I think it's the same as the number the programmer displayed when it had read
> and
> > written the rom to a file - 32768k (8000 hex))? How is the first number determined,
> > is it a memory region?
>
> To add a new clone set to MAME, you need to do just three things (assuming the clone
> is identical hardware-wise to its parent, which should be the case for your version
> of Hang On)
>
> First, you need to add the ROM definitions. Because your board is a newer ROM
> revision, you're going to make it the parent and make the older set that's already in
> MAME a clone. Copy & paste the entire hangon ROM definition--everything from
> ROM_START( hangon ) to ROM_END. In the first (top) copy, change the appropriate ROM
> names and hashes to those from your board--e.g. replace epr-6918.ic22 with
> epr-6918a.ic22. You don't have to change the two hex numbers that come after the ROM
> name--those are the loading offset and the size of the ROM, and they'll be the same
> for your ROMs as for the originals. In the second (bottom) copy, just change
> ROM_START( hangon ) to ROM_START( hangon1 )--this is the old set that you're
> relegating from parent to clone, so you have to rename it.
>
> Second, you need to add a game definition. At the very bottom of the driver file,
> copy and paste the line beginning with GAME( 1985, hangon,.... Again, the first copy
> is going to be your version--change the description (the part in quote marks) from
> "Hang-On" to something like "Hang-On (Rev A)" The second copy is the older version
> which you've renamed. Change the first hangon to hangon1, and the 0 after it to
> hangon. This makes "hangon1" into a clone of "hangon". Leave the rest of the
> "hangon"'s in the line alone.
>
> Finally, you need to add the game definition to src/mame/mamedriv.c as well. Find the
> line that begins with DRIVER( hangon ), copy and paste it, and replace hangon with
> hangon1 in the second copy.
>
> Once you've done these three things, rebuild MAME completely (make clean and then
> make) and if you've done everything right, your ROM set should be recognized!

Ok that's great! Thanks for the help!
I just have another few questions I forgot to ask:
Firstly, I noticed that my rom filenames breach the 8:3 filename standard, I assume that's fine as you've stated one above anyway, is it just the zipfile name that must conform?
If I do manage to get this working (which hopefully I should, it sounds fairly simple now), when it comes to submitting it, is it best I upload the roms to my webspace (the roms are only 32k each) and put a link in a text file with the submitted diff or do I upload the new roms with the diff to Mamedev?
Lastly, when looking at the zipfiles, do I need to change the zips so the four Rev A. files are in a zip with the rest of the files and the other (original) four files are in a zip of their own (for example, hangon1) or do I leave it for Mamedev to change?

Many thanks again,
Tony