With the release of BIOS 1.05, the Harmony cartridge now supports programs with custom bank switch routines. DPC+ is the first to be released.   DPC+ expands upon the capabilities of the DPC chip found in Pitfall II. The original DPC supported two 4K banks and 2K of Display Data (holds graphics and other data). DPC+ expands that to six 4K banks and 4K of Display Data and adds some new features such as "Fast Fetcher" mode. Some DPC features are not supported by the DPC+ (mostly those no