Originally Posted by
madman77
The protection was more about preventing users from using copiers back in the heyday. Pirate carts were far less rare than copiers, especially in the Far East. Improper dumping has nothing to do with it, if the games weren't properly dumped, the shops would not be able to sell the resulting ROM on floppies as was extremely common. The main protection scheme was that of SRAM size checking, if a cartridge that didn't use SRAM was able to read/write from the copiers SRAM, it knew it was being run on a copier. Likewise if a cart used a smaller SRAM size than the copier's, it could read/write to the upper address range and determine it wasn't running on an original cart. The powerpak should automatically limit the SRAM properly.