ALIEN VS PREDATOR - Arcade PCB - Jamma - CPS2 A+B Board
PHOENIX EDITION.
Working / Tested - See Pictures.
What is an A Board:
The A Board, is the Motherboard, it has the JAMMA edge, the Kick Harness port, Volume Controls, and TEST/SERVICE Menu. It has (4) female pin inputs to accept (4) male inputs. There are (2) optional security clips, one on each side, that help to ensure a solid connection. There are (4) metal brackets on the back for mounting your board to an internal wood-board in your cab.
What is a B Board:
The B Board is the colored game board. It often has a label and serial number. In most cases, if you are buying a CPS2 game, you are buying the B board only.
Inside this plastic shell is typically 2-tiered PCB that is rather heavy and takes up about 70% of the interior space of the plastic shell.
What is the Capcom suicide code:
All B boards have memory that is backed up by battery. This memory contains decryption keys that are necessary for the games to load and play. In most cases, if the battery does not last, these batteries will lose their charge and the the board will die, because the CPU can't execute code without the aforementioned keys.
What is "Phoenixing" a board:
Initially as boards died, it was assumed private owners could not play these boards again. There was an option to send the board to Capcom and they would revive it for a cost (having access to the code, of course). A group, known as the CPS2 shock group, and most famously, a Finnish gentleman (Razoola), were able to able to obtain unencrypted program data by hacking the hardware, this allowed for reburning the roms w/o the suicide code and thus phoenixing, or rising from the ashes and bringing back to life, the board.
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