Konami Dark Adventure to Devil World Romswap

[JohnRambo'sKnife]

I have a Dark Adventure board that I want to swap the roms on to "upgrade" to Devil World. I see 12 EEPROMs (11 x 512-20, 1 x 128-20) as well as 6 mask roms (4 x 4M, 2 x 1M). Per the MAME set, it looks like no roms are the same between each game set, so all 18 must be updated.

Questions:
1. Is this just as simple (albeit expensive) as burning the 18 roms and swapping over or is there anything else that needs to be done as well?
2. For the mask roms, what would be the equivalent EEPROM type and speed? There are just marked with a Konami reference so I am unable to tell past the size.

Thanks

 

[Ape Cosplay]

1. It's just a romswap but you don't need to replace all of them, "only" 10 (4 for CPU A, 4 for CPU B, 1 for sound CPU, 1 for title screen tiles)
2. 27C400, 120nS or faster is fine, never tried with anything slower

 

[JohnRambo'sKnife]

Thank you. Doesn't appear I need to touch the mask roms at all if I am looking at it correctly:

9 x 512KB:

• 4N - CPU 1
• 6N - CPU 1
• 4R - CPU 1
• 6R - CPU 1
• 8N - CPU 2
• 10N - CPU 2
• 8S - CPU 2
• 10S - CPU 2
• 10A - Sound

1 x 128KB:

• D8 (this seems to be present at 3F) - Title tiles?

Does this sound right?

 

[Ape Cosplay]

Correct you don't need to touch the mask ROMs for that conversion.

Thank you. Doesn't appear I need to touch the mask roms at all if I am looking at it correctly:

9 x 64KB = 27C512:

• 4N - CPU 1
• 6N - CPU 1
• 4R - CPU 1
• 6R - CPU 1
• 8N - CPU 2
• 10N - CPU 2
• 8S - CPU 2
• 10S - CPU 2
• 10A - Sound => 32KB = 27C256

1 x 16KB = 27C128:

• D8 (this seems to be present at 3F) - Title tiles?

Does this sound right?

KB = Kilo Byte, Kb = Kilo bit
You can OFC use 27C512s everywhere and just double/quadruple files for sound/tiles.

 

[JohnRambo'sKnife]

Thank you very much @Ape Cosplay. Obviously I am somewhat clueless with this stuff.