Action 53

Action 53 is a multicart engine by Damian Yerrick that stuffs dozens of NROM games that use vertical mirroring into one ROM image using mapper 34. It can also be made to work with CNROM multicarts as long as they don't switch CHR banks during play.

A multicart mapper was designed for this project to more easily accommodate games larger than NROM. This multi-discrete mapper (iNES #28) can simulate the behavior of popular discrete boards. In the first volume, the menu and all games except STREEMERZ run in this mapper's BNROM compatibility mode. The second volume still uses BNROM mode for the menu and most games but uses UNROM mode for two games (Super PakPak and Solar Wars) and NROM-128 mode for 16K games so that both games in a bank can have their own NMI vectors.

See also

• Action 53 manual

External links

• Action 53 on author's wiki
• Action 53 multicart engine on NESdev BBS
• STREEMERZ: Action 53 Function 16 Volume One (discussion | download)
• Double Action 53: Volume 2 (discussion | download)