Recreating old RGB patch for Vampire Chronicle on DC?

[cr4zymanz0r]

I know this isn't exactly hardware related, but this sub-forum seems to have the most technically inclined people and I didn't get much input in the off-topic section.

The short version is there was a patch years ago for Vampire Chronicle on DC that would make it behave correctly when using RGB video, but I cannot find any details on recreating that patch or the hex to manually modify.

The longer version is the patch was made for some Echelon scene release and it was a .ppf patch. This has made me run into 2 issues:
1.) .ppf patches (as far as I can tell) basically are just a file that tells which hex offsets to overwrite and what data to overwrite with. Since it doesn't tell which data it's replacing, I can't easily reverse-engineer it on a different rip/dump of the game.

2.) I thought maybe I could patch the Echelon release and compare the files before and after to figure out what is being changed, but as far as I can tell the Echelon release has disappeared off the face of the internet. I finally found one place to get it, only to find out one of the many rar files was corrupt.

What it all boils down to is I would like to patch a GDI dump of the game for use in my GDEMU in my Dreamcast. I'm aware there's newer ports of the game, but I have a fondness for DC and would like to have the option of playing it on a CRT in RGB.

I found instructions for which hex values to replace in some other Capcom DC games, but they didn't seem to apply to this. Anybody have some insight?

[Einzelherz]

I had this same problem with GigaWing last month actually. I *was* able to find the original Kalisto release, however. With the good original release I was able to PPF patch it using an old command line patcher in a WinXP virtual machine, then run the old BootDreams (also required 32-bit OS) software to make it bootable. I can tell you that NullDC was immensely helpful, although in the end what NullDC said would work, didn't.

I wish I could be more help.