Codex Gamicus
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Hyper Neo Geo 64
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Hyper Neo Geo 64
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===Board Revisions=== The fighting game board has 2 revisions. The first revision looks to be [[JAMMA]] but is not true JAMMA as the sound does not come from the JAMMA edge but from a JST VL connector mounted on the front of the board which is controlled by a [[potentiometer]]. There is a modification available to get mono sound off the JAMMA edge which involves removing a jumper and setting another. There is also a mysterious extra +5v connector that is supposed to be connected to the back of the board to "prolong" the life of the board per SNK. It is still unconfirmed if having the extra +5v connector connected actually does increase the boards life. Some say it is to divert the heat of the high amps going through the JAMMA edge. The 2nd board revision is true JAMMA and also has a switch to select between JAMMA output as well as MVS output which has stereo sound. It is easy to tell each revision apart, Revision 1 has a volume pot and Revision 1 has a volume port and JST YL/VL connectors on the front, while the Revision 2 board has only JST YL and VL connectors (21 pin YL, 4 pin VL, 15 pin YL, 12 pin YL, 9 pin YL) on the front of the board.
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