== Protection ==
The EPROMs aren't encrypted, making it very easy to dump their content, or to replace them by other EPROMs. However, all cartridges must contain an '''ACID''' chip, otherwise the CPC+/GX4000 refuses to work, meaning that unlicensed third-party developers couldn't produce cartridges without buying the ACID hardware from Amstrad.
* For details on the chip, see [[ACID]].