> What mode are you using talking about please (-s/-m/-n, -d1/-d2/-d3)? MAMEDiff
> works quite differently now so I can't explain the reason without knowing what
> mode your are actually referring to. Resource changes are included in the
> generated data files but games do not refer to parents or resources for the sake
> of it now. This is because the behaviour across modes d1/d2/d3 has been made
> consistent (well, it's one piece of code now rather than two completely
> different algorithms). In all changes/supplements modes, games are essentially
> treated as individual ZIPs and cloneof/romof has basically become irrelevant. I
> don't imagine that you are using rebuildto paths for changes/supplements so I
> guess that you've been comparing the output of two MAMEDiff versions? I'm
> interested to know why this affects you. ;)
>
ok, let me explain axcatly what i did

i had a v0.83 complete Merged set, using Non Separated BIOS ROMs (meaning every zip has the bios roms if needed)

next i built a diff set using your 'MAME v0.84 (Fully-merged Changes).dat' and copied the zips over the v0.83 folder

then i scanned with your 'MAME v0.84.dat' and instead of a clean log i got this:

Dragon World II (ver. 110X, Export) [folder: drgw2]
missing BIOS rom: pgm_m01s.rom [size: 2097152] [CRC32: 0x45ae7159] [SHA1: d3ed3ff3464557fd0df6b069b2e431528b0ebfa8]
missing BIOS rom: pgm_p01s.rom [size: 131072] [CRC32: 0xe42b166e] [SHA1: 2a9df9ec746b14b74fae48b1a438da14973702ea]
missing BIOS rom: pgm_t01s.rom [size: 2097152] [CRC32: 0x1a7123a0] [SHA1: cc567f577bfbf45427b54d6695b11b74f2578af3]

Dragon World 3 [folder: drgw3]
missing BIOS rom: pgm_m01s.rom [size: 2097152] [CRC32: 0x45ae7159] [SHA1: d3ed3ff3464557fd0df6b069b2e431528b0ebfa8]
missing BIOS rom: pgm_p01s.rom [size: 131072] [CRC32: 0xe42b166e] [SHA1: 2a9df9ec746b14b74fae48b1a438da14973702ea]
missing BIOS rom: pgm_t01s.rom [size: 2097152] [CRC32: 0x1a7123a0] [SHA1: cc567f577bfbf45427b54d6695b11b74f2578af3]

The Killing Blade [folder: killbld]
missing BIOS rom: pgm_m01s.rom [size: 2097152] [CRC32: 0x45ae7159] [SHA1: d3ed3ff3464557fd0df6b069b2e431528b0ebfa8]
missing BIOS rom: pgm_p01s.rom [size: 131072] [CRC32: 0xe42b166e] [SHA1: 2a9df9ec746b14b74fae48b1a438da14973702ea]
missing BIOS rom: pgm_t01s.rom [size: 2097152] [CRC32: 0x1a7123a0] [SHA1: cc567f577bfbf45427b54d6695b11b74f2578af3]

Psychic Force (Ver 2.4O) [folder: psyforce]
missing BIOS rom: coh-1000t.353 [size: 524288] [CRC32: 0xe3f23b6e] [SHA1: e18907cf8c6ba54d96edba0a9a00487a90219e0d]

Super Football Champ (Ver 2.5O) [folder: sfchamp]
missing BIOS rom: coh-1000t.353 [size: 524288] [CRC32: 0xe3f23b6e] [SHA1: e18907cf8c6ba54d96edba0a9a00487a90219e0d]