Author Topic: SNK Vs. CAPCOM SVC CHAOS question  (Read 6593 times)

Offline RockmanRotties

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SNK Vs. CAPCOM SVC CHAOS question
« on: February 24, 2005, 11:42:26 PM »
Whats the differences  between:

SNK Vs. CAPCOM SVC CHAOS (MVS)
SNK Vs. CAPCOM SVC CHAOS (PCB)

???

Just wonder...thanks!

Offline iq_132

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SNK Vs. CAPCOM SVC CHAOS question
« Reply #1 on: February 25, 2005, 12:58:33 AM »
Well, here's a quick list.
The PCB has double-encrypted C roms
The PCB's C roms are also already interleaved, the MVS' Cs are not (which is normal)
The PCB has two 32mb C roms, as opposed to the MVS' standard 8.
The PCB *should* have a custom bios included with it.
The PCB's P rom (it only has one) is already interleaved and includes 24mb of junk data
The MVS' P roms (it has two) are not interleaved (take two bytes from C1, two bytes from C2, two bytes from C1 and so on.)
The S data on the PCB (which is contained in the Cs) is encrypted, the S data on the MVS (which is also in the Cs) is not encrypted

That's really all I can think of.

Here's some similarities:
They probably use the Same M1/m1d and V roms.
The Program data, when decrypted, is exactly the same (if you chop 24mb off the PCB version :p)
The P roms are encrypted in the same way
The C roms use the same standard xor key (57)

btw, welcome to my forums Rockman :)


Offline James33

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Offline RockmanRotties

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SNK Vs. CAPCOM SVC CHAOS question
« Reply #3 on: February 25, 2005, 09:55:10 AM »
Quote from: iq_132
Well, here's a quick list.
The PCB has double-encrypted C roms
The PCB's C roms are also already interleaved, the MVS' Cs are not (which is normal)
The PCB has two 32mb C roms, as opposed to the MVS' standard 8.
The PCB *should* have a custom bios included with it.
The PCB's P rom (it only has one) is already interleaved and includes 24mb of junk data
The MVS' P roms (it has two) are not interleaved (take two bytes from C1, two bytes from C2, two bytes from C1 and so on.)
The S data on the PCB (which is contained in the Cs) is encrypted, the S data on the MVS (which is also in the Cs) is not encrypted

That's really all I can think of.

Here's some similarities:
They probably use the Same M1/m1d and V roms.
The Program data, when decrypted, is exactly the same (if you chop 24mb off the PCB version :p)
The P roms are encrypted in the same way
The C roms use the same standard xor key (57)

btw, welcome to my forums Rockman :)


I understand now and thank you so much for welcome me!  :D

James33,

Thanks for the pictures  ;)