I have no idea if it will work with the PS2. So anyway, this works with all playstations that resemble the original, but may not work with the more recent redesigned PS1. Of course, it is illegal to copy games, so I'm sure you won't use this with games you don't own, right? Right. one made for a playstation in a different country). There is still a method by which, without even modifying your console, one can use a copied psx game, and it will also let you use a foreign game (i.e. This method, discovered by Zima, simply uses a manual override of the PS2 tray motor to prevent the system from reading the first sectors of a burned game. However, a new form of the swaptrick functions for the Playstation 2. A beta-version chip called the Neo 2 functions for some games, but requires 30 wires to connect, and still requires the use of a game cheat device described above. Mod chip development is underway but is advancing slowly. Playstation 2s use a similar method of copy protection. Correct installation allows the gamer to play his burned games. Installation is not easy, and can result in a permanently fried console. Some of the wires connect directly to pins of chips on the playstation board. This chip is connected to the playstation mainboard with no less than seven wires, and the wires go all over the board. The PIC code was altered several times, and ultimately stabilized in the version known as "Stealth Mod 2". This device was a programmed PIC chip that would intercept signals on the mainboard that claimed the CD was a burn, and insert required "this CD is real" signals. The solution to the burned game dilemma came in the form of the mod chip. In any case, this hole was quickly patched by Sony in later series models. Other " swaptricks" required the use of game cheat devices such as the Action Replay or the GameShark. "So how about we start booting a real Playstation game and then swap in the copy after a few seconds?" This strategy actually did work for early series Playstations, but also involved modifying the Playstation's disc reader cover so that it could be open without letting the console know. Also there is no combination of data that will produce the required zero-checksum. One may ask "ok, so why can't we write zero-checksums on a burned disc?" The answer is that on a typical home CD-R burner, the checksum data is determined at write-time by the burner itself, and not by the computer. Authorized Sony disc producers have "special" disc writers that ensure the checksum is correct. Real Playstation discs have a checksum value of zero on the first few blocks. The Playstation copy protection works by reading the checksum values of the first few blocks of the disc. It is this third reason that this entry is concerned with. The third is Sony's ingenious copy protection scheme to differentiate burned discs from "real" ones. The first reason is that this is illegal. An obvious question is why wouldn't someone just burn copies of their favorite games, and avoid paying the high retail price. Playstation games cost upwards of 50$ CDN, while CD-Rs cost less than one dollar each.
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