NES 2.0 Mapper 601
NES 2.0 Mapper 601 denotes UM6578-based plug-and-play consoles from dreamGEAR and Scenario that extend the addressable PRG-ROM from 1 to 2 MiB by switching A20 for the entire address range via $4026 bit 7. Used by:
- dreamGEAR Plug ‘N’ Play꞉ 25 Classic & Racing Games (DGUN-806)
- Senario Card & Casino Games 10 Games in 1
- Senario Vs. Maxx꞉ 25 Classic & Racing Games