MFP Extended Memory-2048K
This page was last modified 17:38, 26 February 2020 by Mars2000you. Based on work by Gdx.



The MFP Extended Memory-2048K cartridge is a standard Memory Mapper that can be expanded to 3072kB by adding two same Ram chips and one capacitor. This expansion was sold in Japan.


PCB without chip
PCB without chip back

Minimum System Requirements

  • MSX2 computer, one free slot cartridge

Note: As all standard Memory Mapper, this cartridge is not supported by MSX1 computers except with Nextor or a MSX-DOS2 unbridled (like Sunrise CF interface). On MSX1 without Nextor, we need to manually initialize pages order of the mapper from basic before it can be used.


  • CHKMEM.BIN (Utility that displays the slot of RAM, Memory Mapper and MegaRAM by LARK)
  • Mapper Info (by Yukke)
  • MEGA16.COM (loader for megaroms with 16k mapper)
  • MEMTEST.COM (RAM of Memory Mapper tester by Masatoshi Fujimoto)
  • TESTMAP.COM (RAM of Memory Mapper tester by Marteen)
  • SofaRom (MegaRoms and Roms loader by Louthrax)